U.S. patent application number 17/407485 was filed with the patent office on 2021-12-09 for optical film.
The applicant listed for this patent is SHINE OPTOELECTRONICS (KUNSHAN) CO., LTD.. Invention is credited to Jian ZHANG.
Application Number | 20210382202 17/407485 |
Document ID | / |
Family ID | 1000005795041 |
Filed Date | 2021-12-09 |
United States Patent
Application |
20210382202 |
Kind Code |
A1 |
ZHANG; Jian |
December 9, 2021 |
Optical Film
Abstract
Disclosed is an optical film of a double-sided structure,
comprising: a body which comprises a polymer, having a first
surface and a second surface opposite to each other; an
accommodation mechanism provided on the first surface and the
second surface; and a filler filled in the accommodation mechanism
for forming a graphic structure, wherein the upper surface of the
filler is just flush with the first surface and the second surface
respectively to form a plane structure; or, the upper surface of
the filler is lower than the first surface and the second surface
respectively to form a sag structure; the body comprising the
accommodation mechanism is an integral structure; the polymer
comprises a thermosetting resin, a photocurable resin or a mixture
of the thermosetting resin and the photocurable resin. The present
application provides the optical film, so as to advantageously
reduce a thickness of a film.
Inventors: |
ZHANG; Jian; (Kunshan,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SHINE OPTOELECTRONICS (KUNSHAN) CO., LTD. |
Kunshan |
|
CN |
|
|
Family ID: |
1000005795041 |
Appl. No.: |
17/407485 |
Filed: |
August 20, 2021 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15865239 |
Jan 8, 2018 |
11131792 |
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17407485 |
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PCT/CN2016/089111 |
Jul 7, 2016 |
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15865239 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G02B 3/005 20130101;
B42D 25/36 20141001; G02B 3/0031 20130101; B42D 25/351 20141001;
G02B 1/10 20130101; H05K 1/0274 20130101; H05K 1/0353 20130101;
G02B 1/041 20130101; B42D 25/324 20141001; H05K 3/1258
20130101 |
International
Class: |
G02B 1/04 20060101
G02B001/04; G02B 3/00 20060101 G02B003/00; B42D 25/324 20060101
B42D025/324; B42D 25/351 20060101 B42D025/351; G02B 1/10 20060101
G02B001/10; H05K 1/02 20060101 H05K001/02; H05K 1/03 20060101
H05K001/03 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 8, 2015 |
CN |
201510397170.2 |
Jul 8, 2015 |
CN |
201510397220.7 |
Jul 8, 2015 |
CN |
201520488395.4 |
Jul 8, 2015 |
CN |
201520488918.5 |
Jul 8, 2015 |
CN |
201520488919.X |
Jul 8, 2015 |
CN |
201520488920.2 |
Claims
1. An optical film of a double-sided structure, comprising: a body
which comprises a polymer, having a first surface and a second
surface opposite to each other; an accommodation mechanism provided
on the first surface and the second surface; and a filler filled in
the accommodation mechanism for forming a graphic structure,
wherein the upper surface of the filler is just flush with the
first surface and the second surface respectively to form a plane
structure; or, the upper surface of the filler is lower than the
first surface and the second surface respectively to form a sag
structure; the body comprising the accommodation mechanism is an
integral structure; the polymer comprises a thermosetting resin, a
photocurable resin or a mixture of the thermosetting resin and the
photocurable resin.
2. The optical film of a double-sided structure according to claim
1, wherein the accommodation mechanism comprises a groove.
3. The optical film of a double-sided structure according to claim
1, wherein the accommodation mechanism accommodates a filler to
form the graphic structure.
4. The optical film of a double-sided structure according to claim
3, wherein the filler comprises one or more of an electrically
conductive material, a coloring material, or a dyeing material.
5. The optical film of a double-sided structure according to claim
1, wherein the body has a transmittance of above 0.7.
6. The optical film of a double-sided structure according to claim
1, wherein the accommodation mechanism accommodates an electrically
conductive material to form a printed circuit film of a
double-sided structure which is used for touch screen.
7. The optical film of a double-sided structure according to claim
6, wherein the electrically conductive material comprises one or
more of an electrically conductive metal, an electrically
conductive carbon tube, a graphene, or an electrically conductive
polymer.
8. The optical film of a double-sided structure according to claim
1, wherein there are only the filler and the polymer between the
first surface and the second surface.
9. A manufacturing method of an optical film of a double-sided
structure, comprising: acquiring a primary body with a material
being a polymer and presenting a colloidal state at a normal
temperature and pressure, wherein the polymer comprises a
thermosetting resin, a photocurable resin or a mixture of the
thermosetting resin and the photocurable resin; forming a primary
accommodation mechanism by using an imprinting device to imprint on
the primary body's two surfaces opposite to each other; curing the
primary body to obtain the optical film of a double-sided structure
which is an integral structure and has an accommodation mechanism;
filling a filler in the accommodation mechanism of the optical film
of a double-sided structure until just flush with the first surface
and the second surface respectively to form a graphic
structure.
10. The manufacturing method of an optical film of a double-sided
structure according to claim 9, wherein the imprint step comprises
the following steps: S21. inputting the primary body between the
first roller and the second roller; S22. forming a primary
accommodation mechanism by using the first roller and the second
roller to imprint on two surfaces opposite to each other of the
primary body.
11. The manufacturing method of an optical film of a double-sided
structure according to claim 9, wherein the imprint step and the
curing step comprise the following steps: S200. imprinting on a
surface of the primary body by using an imprinting device to form a
primary accommodation mechanism; S300. curing the primary body to
obtain the optical film of a double-sided structure which is an
integral structure and has an accommodation mechanism.
12. The manufacturing method of an optical film of a double-sided
structure according to claim 11, wherein the step S200 and the step
S300 are performed simultaneously.
13. A polymer film for imaging, comprising: a polymer having a
first surface and a second surface opposite to each other, wherein
the first surface is formed with a microlens structure; an
accommodation structure provided on the second surface; and a
filler filled in the accommodation mechanism for forming a graphic
structure which images via the microlens structure; wherein the
body comprising the microlens structure and the accommodation
structure is an integral structure; the upper surface of the filler
is just flush with the second surface to form a plane structure;
or, the upper surface of the filler is lower than the second
surface to form a sag structure; the polymer comprises a
thermosetting resin, a photocurable resin or a mixture of the
thermosetting resin and the photocurable resin.
14. The polymer film according to claim 13, wherein the filler and
the polymer have different refractive indexes of light.
15. The polymer film according to claim 13, wherein the
accommodation structure is in a groove shape.
16. The polymer film according to claim 13, wherein a distance
between a top of the microlens structure and a top of the
accommodation structure is 2.about.150 micrometers.
17. The polymer film according to claim 13, wherein the surface of
the microlens structure is provided with a reflection
structure.
18. The polymer film according to claim 17, wherein a thickness of
the reflection structure is 0.02.about.5 micrometers.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 15/865,239, filed on Jan. 8, 2018, which is a
continuation of International Application No. PCT/CN2016/089111,
filed on Jul. 7, 2016, which claims a priority of the Chinese
patent applications with the application No. 2015103971702,
application No. 2015103972207, application No. 2015204883954,
application No. 2015204889185, application No. 201520488919X and
application No. 2015204889202 as submitted on Jul. 8, 2015, and the
entire teachings of the above applications are incorporated herein
by reference.
TECHNICAL FIELD
[0002] The present application relates to a technical field of
optical films, especially relates to an optical film.
BACKGROUND
[0003] An optical film is a modern product combining the imprint
technique, the micro-nano processing technique and the imaging
technique, and has broad market prospects in the fields such as
touch screens, anti-counterfeit labels and packaging, etc. In the
touch screen field, an optical film can be used for manufacturing a
transparent conductive film, such as the invention patent <a
double-sided graphical transparent conductive film and a
preparation method thereof> with the application No.
201210141850.4. In said patent, a groove network on upper and lower
surfaces of an intermediate layer is made by using the imprint
technique, a transparent conductive film made by using such
preparation method has a three-layer structure, the intermediate
layer is a substrate, upper and lower surfaces of the substrate are
coated with a curable resin for imprinting a groove structure.
[0004] In the fields such as anti-counterfeit labels and packaging,
an optical film, under a special structure, can produce a dynamic
stereoscopic effect, for example the invention patent <a
micro-optic security and image presentation system> with the
application No. 200480040733.2, the invention patent <a safety
film with a dynamic three-dimensional effect> with the
application No. 201010180251.4, the invention patent <a
packaging film with an anti-fake function with a three-dimensional
dynamic displaying effect> with the application No.
201110266470.9 and the invention patent <a film of visual
stereoscopic floating images and a manufacturing method thereof>
with the application No. 201310229569.0 relate to an optical film
structure which can produce a dynamic stereoscopic effect. Such
optical film also has a three-layer structure, the intermediate
layer is a substrate (referred to as a multilayer substrate layer
or a film body in the above patents), upper and lower surfaces of
the substrate are coated with a curable resin for imprinting a
microlens array and a micrographic structure.
[0005] No matter in the touch screen field or in the fields such as
anti-counterfeit labels and packaging, an optical film adopts a
three-layer structure, wherein a substrate serves a function of
providing a support platform to a curable resin at an imprint
stage. In order to separate an imprint mold from a curable resin,
thus an adhesive force between the substrate and the curable resin
needs to be greater than an adhesive force between the curable
resin and the imprint mold, which causes the substrate incapable of
being separated from the curable resin, this is a root reason that
at the present stage, an optical film stays at a three-layer
structure.
[0006] Although an optical film has had revolutionary impacts on
our life, since a substrate is retained in each optical film, the
substrate increases the thickness of the optical film, thereby the
transmittance of the optical film is reduced.
SUMMARY
[0007] In view of deficiencies of the prior art, the present
application provides an optical film, so as to advantageously
reduce a thickness of a film.
[0008] In order to reach the above aim, the present application
provides an optical film of a double-sided structure, comprising:
[0009] a body which includes a polymer, having a first surface and
a second surface opposite to each other; [0010] an accommodation
mechanism, provided on the first surface and the second surface,
and used for forming a graphic structure on a surface of the body;
[0011] the body comprising the accommodation mechanism being an
integral structure.
[0012] In order to reach the above aim, the present application
also provides an optical film of a double-sided structure,
comprising: [0013] a body which includes a first polymer and a
second polymer, having a first surface and a second surface
opposite to each other; [0014] an accommodation mechanism, provided
on the first surface and the second surface, and used for forming a
graphic structure on a surface of the body; [0015] adjacent parts
between the first polymer and the second polymer fuse each other
such that the body comprising the accommodation mechanism is an
integral structure.
[0016] In order to reach the above aim, the present application
also provides a manufacturing method of an optical film of a
double-sided structure, comprising: [0017] acquiring a primary body
with a material being a polymer and presenting a colloidal state at
a normal temperature and pressure; [0018] forming a primary
accommodation mechanism by using an imprinting device to imprint on
the primary body's two surfaces opposite to each other; [0019]
curing the primary body to obtain the optical film of a
double-sided structure which is an integral structure and has an
accommodation mechanism.
[0020] In order to reach the above aim, the present application
also provides a polymer film for imaging, comprising: a polymer
having a first surface and a second surface opposite to each other;
[0021] the first surface being formed with a microlens structure;
[0022] the second surface being formed with an accommodation
structure used for forming a graphic structure which images via the
microlens structure; [0023] the microlens structure and the
accommodation structure being an integral structure.
[0024] In order to reach the above aim, the present application
also provides a polymer film for imaging, comprising: a first
polymer having a first surface and a second polymer having a second
surface, the first surface and the second surface being opposite to
each other; [0025] the first surface being formed with a microlens
structure; [0026] the second surface being formed with an
accommodation structure used for forming a graphic structure which
images via the microlens structure; [0027] an adjacent part between
the first polymer and the second polymer is formed with a fusion
portion, such that the microlens structure and the accommodation
structure form an integral structure.
[0028] In order to reach the above aim, the present application
also provides a polymer film for imaging, comprising: a polymer
having a first surface and a second surface opposite to each other;
[0029] the first surface being formed with a microlens structure;
[0030] the second surface being formed with an accommodation
structure used for forming a graphic structure which images via the
microlens structure; [0031] the microlens structure and the
accommodation structure being an integral structure; [0032] a
surface of the microlens structure being provided with a reflection
structure.
[0033] In order to reach the above aim, the present application
also provides a polymer film for imaging, comprising: a first
polymer having a first surface and a second polymer having a second
surface, the first surface and the second surface being opposite to
each other; [0034] the first surface being formed with a microlens
structure; [0035] the second surface being formed with an
accommodation structure used for forming a graphic structure which
images via the microlens structure; [0036] an adjacent part between
the first polymer and the second polymer is formed with a fusion
portion, such that the microlens structure and the accommodation
structure form an integral structure; [0037] a surface of the
microlens structure being provided with a reflection structure.
[0038] In order to reach the above aim, the present application
also provides a preparation method of a polymer film for imaging,
including: [0039] acquiring a polymer which presents a colloidal
state at a normal temperature and pressure; [0040] using a first
mold having a microlens style to extrude a first side of the
polymer, and using a second mold have a predetermined accommodation
structure to extrude a second side of the polymer, to form a
microlens preliminary structure and an accommodation preliminary
structure which are in an integral structure; wherein the first
side and the second side are opposite to each other; [0041] curing
the microlens preliminary structure and the accommodation
preliminary structure, to respectively form a microlens structure
and an accommodation structure, the accommodation structure being
used for forming a graphic structure which images via the microlens
structure so as to obtain the polymer film.
[0042] To sum up, it can be seen that in the technical solution
provided by the present application, since a body of an optical
film is an integral structure, there is no substrate in the body,
meanwhile a manufacturing process does not need a substrate, thus
an optical film of a double-sided structure provided in this
embodiment is beneficial to reduce a thickness of an optical
film.
BRIEF DESCRIPTION OF DRAWINGS
[0043] FIG. 1 is a schematic diagram of an optical film of a
double-sided structure, as provided by an embodiment of the present
application;
[0044] FIG. 2 is a schematic diagram of an optical film of a
double-sided structure filled with a filler, as provided by an
embodiment of the present application;
[0045] FIG. 3 is a schematic diagram of an optical film of a
double-sided structure, as provided by an embodiment of the present
application;
[0046] FIG. 4 is a flowchart of a manufacturing method of an
optical film of a double-sided structure, as provided by the
present application;
[0047] FIG. 5 is a schematic diagram of an imprinting device in the
imprint steps of the manufacturing method as shown in FIG. 4;
[0048] FIG. 6 is a flowchart of the imprint steps of the
manufacturing method as shown in FIG. 4;
[0049] FIG. 7 is a flowchart of the imprint steps and curing steps
of the manufacturing method as shown in FIG. 4;
[0050] FIG. 8 is a flowchart of the imprint steps and curing steps
of the manufacturing method as shown in FIG. 7;
[0051] FIG. 9 is a structural schematic diagram of a polymer film
which does not form a graphic structure, as provided by the
embodiments of the present application;
[0052] FIG. 10 is a structural schematic diagram of a polymer film
which forms a graphic structure, as provided by the embodiments of
the present application;
[0053] FIG. 11 is a structural schematic diagram of another polymer
film, as provided by the embodiments of the present
application;
[0054] FIG. 12 is a structural schematic diagram of another polymer
film, as provided by the embodiments of the present
application;
[0055] FIG. 13 is a structural schematic diagram of another polymer
film which does not form a graphic structure, as provided by the
embodiments of the present application;
[0056] FIG. 14 is a structural schematic diagram of another polymer
film which forms a graphic structure, as provided by the
embodiments of the present application;
[0057] FIG. 15 is a structural schematic diagram of another polymer
film (provided with a reflection structure) which does not form a
graphic structure, as provided by the embodiments of the present
application;
[0058] FIG. 16 is a structural schematic diagram of another polymer
film (provided with a reflection structure) which forms a graphic
structure, as provided by the embodiments of the present
application;
[0059] FIG. 17 is a structural schematic diagram of another polymer
film (provided with a reflection structure) which does not form a
graphic structure, as provided by the embodiments of the present
application;
[0060] FIG. 18 is a structural schematic diagram of another polymer
film (provided with a reflection structure) which forms a graphic
structure, as provided by the embodiments of the present
application;
[0061] FIG. 19 is a flowchart of a manufacturing method of a
polymer film, as provided by the embodiments of the present
application;
[0062] FIG. 20 is a structural schematic diagram of a polymer film
which does not form a graphic structure, as provided by the
embodiments of the present application;
[0063] FIG. 21 is a structural schematic diagram of a polymer film
which forms a graphic structure, as provided by the embodiments of
the present application;
[0064] FIG. 22 is a structural schematic diagram of another polymer
film, as provided by the embodiments of the present
application;
[0065] FIG. 23 is a structural schematic diagram of another polymer
film (provided with a reflection structure), as provided by the
embodiments of the present application.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0066] In order that the persons skilled in the art can better
understand the technical solutions in the present application, the
following is a clear and complete description on the technical
solutions in the embodiments of the present application by
combining with the figures in the embodiments of the present
application, obviously the described embodiments are only a part of
embodiments of the present application, not all the embodiments.
Based on the embodiments in the present application, all the other
embodiments obtained by ordinary persons skilled in the art without
paying creative labor should belong to the protection scope of the
present invention.
[0067] It needs to be stated that when an element is referred to as
"being provided in" another element, it can be directly on another
element or intervening elements may also be present. When an
element is referred to as "being connected to" another element, it
can be directly connected to another element or intervening
elements may be present simultaneously. The terms "vertical",
"horizontal", "left", "right" and similar expressions used herein
are only for the purpose of illustration, and do not represent an
only embodiment.
[0068] Unless otherwise defined, all the technical and scientific
terms used herein have the same meaning normally understood by the
persons skilled in the art of the present invention. The terms used
in the Description of the present invention are only for the
purpose of describing specific embodiments, not for limiting the
present invention. The term "and/or" used herein includes one or
more relevant arbitrary or all the combinations of a listed
item.
[0069] Referring to FIG. 1, it is an optical film of a double-sided
structure as provided by an embodiment of the present application,
comprising: a body 1 which includes a polymer, having a first
surface 11 and a second surface 12 opposite to each other; and an
accommodation mechanism 2, provided on the first surface 11 and the
second surface 12, and used for forming a graphic structure on a
surface of the body 1; the body 1 comprising the accommodation
mechanism 2 is an integral structure.
[0070] When using the above optical film of a double-sided
structure, a material (an object) such as an electrically
conductive material, a color material or other material can be
filled in the accommodation mechanism 2 based on a demand, as shown
in FIG. 2, thereby to obtain a required an electrically conductive
film or a anti-counterfeit label, etc. Of course, when
manufacturing the optical film of a double-sided structure, in
order to make the body 1 be formed as an integral structure and
have the accommodation mechanism 2, imprint and curing can be
performed simultaneously during the manufacturing process, such
that once the curing is completed, a colloidal polymer can be
directly formed as the integrally structured body 1 having the
accommodation mechanism 2.
[0071] It can be seen that in the technical solution provided by
the present embodiment, since the body 1 of the optical film of a
double-sided structure is an integral structure, there is no
substrate in the body 1, meanwhile a manufacturing process does not
need a substrate, thus the optical film of a double-sided structure
provided by this embodiment is beneficial to reduce a thickness of
an optical film.
[0072] Meanwhile, since the optical film of a double-sided
structure provided by this embodiment has no substrate limitation
of the prior art, a thickness of the optical film of a double-sided
structure provided by this embodiment, relative to a thickness of
an optical film of the prior art, can decrease to a greater extent,
even reaching several micrometers.
[0073] Meanwhile, since there is no substrate of the prior art in
the optical film of a double-sided structure provided by this
embodiment, compared with an optical film having a three-layer
structure in the prior art, the weight of the optical film can be
reduced significantly.
[0074] Meanwhile, since there is no substrate of the prior art in
the optical film of a double-sided structure provided by this
embodiment, compared with an optical film having a three-layer
structure in the prior art, the transmittance of the optical film
can be improved significantly.
[0075] In this embodiment, a thickness of an optical film of a
double-sided structure can be 2 to 150 micrometers. When imprinting
the body 1, the thickness of the body 1 can be controlled by
controlling the amount of a raw material and the extrusion force of
the imprinting device 8 as shown in FIG. 5, the greater the
extrusion force is, the smaller the thickness of the body 1 is,
thereby the thinner a manufactured optical film of a double-sided
structure is. Currently, electronic products such as mobile phones
and computers, etc. are used to apply the "ultrathin" concept, the
thickness of these electronic products also tend to be thinner,
while the optical film of a double-sided structure provided by this
embodiment can be used in the screens of these electronic products,
and the extrusion force of the imprinting device 8 is controlled
based on different demands, such that the thickness of the optical
film of a double-sided structure is less than 50 micrometers. On
the other hand, considering that the optical film of a double-sided
structure provided by this embodiment can be also pasted on a
surface of an item for decoration, in order that there is no
obvious steps feeling when touching a pasted surface of an item
after the optical film is pasted, by controlling the amount of a
polymer and the extrusion force of the imprinting device 8, the
thickness of the optical film of a double-sided structure can be
less than 40 micrometers or 30 micrometers.
[0076] (1) The body 1 may include a polymer's structure having any
shape. In order to facilitate practical applications, the body 1 as
a whole can be in a shape of a thin layer. Of course, the shape of
a thin layer can be tabular, wavy, or irregular shaped, etc.,
preferably, the body 1 can be solid-state tabular. Specifically,
the body 1 can be an one-layer solid-state polymer layer, the
one-layer polymer layer is a polymer. Accordingly, a raw material
for manufacturing the body 1 can be a primary body having an
one-layer polymer layer (in a colloidal state), the colloidal
polymer layer can be formed integrally after imprinting and curing,
to form the body 1 having an integral structure. Polymers in the
body 1 can distribute evenly, or can distribute unevenly. When
polymers distribute unevenly, many regions having different
densities will be formed in the body 1, while there is no interface
between adjacent regions, namely there is no interface in the whole
body 1, so as to ensure the transmittance of the body 1.
[0077] (2) It needs to be stated that the polymer can include a
class of polymers and a polymer, or the polymer can also include a
mixed polymer formed by multiclass of polymers or a plurality of
polymers, this embodiment is not limited to that. Of course, the
body 1 is a colloidal primary body before being formed integrally,
the primary body will transform from a colloidal state to a solid
state under heating or irradiation by a heat source or an
irradiation source. Considering that a photocurable resin and a
thermosetting resin have good fidelity when forming a graphic
structure, it is not easy for a pattern to affect a profile of a
graphic structure due to a tension of the photocurable resin and
the thermosetting resin. Preferably, the polymer can include a
thermosetting resin and/or a photocurable resin. Namely, the
polymer can be a thermosetting resin, a photocurable resin or a
mixture of the thermosetting resin and the photocurable resin. For
example, the polymer can be an UV gel (a photosensitive gel),
considering that an UV gel in practice has multiple types and
kinds, the polymer can be also a mixture of multiple UV gels.
[0078] (3) In order to ensure a display effect of a graphic
structure of a whole optical film of a double-sided structure and
to prevent display of the graphic structure from being affected by
the color of the body 1 itself, the transmittance of the body 1 can
be greater than 0.7. The transmittance of the body 1 being greater
than 0.7 can be a transmittance for natural light being greater
than 0.7. Of course, in order to obtain the body 1 having different
colors, the body 1 itself can have a color, for example, the
reflectivity of the body 1 with respect to yellow light can be
controlled higher than 0.9, but the transmittance with respect to
other color light is still greater than 0.7. Where the body 1 is
transparent but have a color, a color of a graphic structure can be
displayed clearly if being different from the color of the body 1.
Of course, in this embodiment, the transmittance of the body 1 with
respect to natural light being greater than 0.7 is a better
embodiment.
[0079] (4) The first surface 11 and the second surface 12 are
opposite to each other, the area of the first surface 11 and of the
second surface 12 can be much larger than the area of other side
surfaces of the body 1. Of course, the area of the first surface 11
and of the second surface 12 can be same, or can be different.
Preferably, in this embodiment, the area of the first surface 11
and of the second surface 12 being same is a preferred embodiment.
The first surface 11 and of the second surface 12 can be a plane
structure. Accordingly, other surfaces of the first surface 11 and
the second surface 12 minus a surface of the area occupied by the
accommodation mechanism 2 can be planes.
[0080] (5) The accommodation mechanism 2 is provided at the first
surface 11 and the second surface 12 of the body 1. Of course, a
shape and/or track of the accommodation mechanism 2 located at the
first surface 11 and a shape and/or track of the accommodation
mechanism 2 located at the second surface 12 can be same, or can be
different. The accommodation mechanism 2 is formed by imprinting on
a surface of a colloidal polymer, and its shape is unchangeable
after curing. Therefore, a shape of the accommodation mechanism 2
correlates with an imprint mold. Thus, different styles of molds
can be manufactured based on needs, thereby an accommodation
mechanism 2 having a required style can be obtained.
[0081] (6) The accommodation mechanism 2 can be a trench, a groove,
a recess or a hole. In this embodiment, the accommodation mechanism
2 being a groove is a preferred solution. A groove can be in a
regular or irregular shape, or can be latticed or curved, the
present application is not limited to these. When an optical film
of a double-sided structure of this embodiment is used for
manufacturing a conductive film, a groove being latticed can be a
preferred solution. Thereby, a groove has mutually vertical
meridian lines and latitude lines to divide the first surface 11
and the second surface 12 into a plurality of square regions. When
an optical film of a double-sided structure of this embodiment is
used for manufacturing an anti-counterfeit label or packaging, a
logo, a mark or a profile or character of a pattern can be
displayed by means of a groove track. Of course, a shape of a
cross-section of the accommodation mechanism 2 can be also
multiple, can be semicircular, semielliptic or irregularly shaped,
and a shape of a cross-section of the accommodation mechanism 2 on
the same one surface can include one or more of an U shape, an arc
shape and an irregular shape.
[0082] (7) The accommodation mechanism 2 is used for forming a
graphic structure on a surface of the body 1, specifically, as
shown in FIG. 2, the accommodation mechanism 2 can accommodate a
filler 3 to form the graphic structure. A graphic structure can be
a pattern, a text message or a track structure. Based on different
accommodation mechanisms 2 on the first surface 11 and the second
surface 12 and different fillers 3, a graphic structure displayed
on the first surface 11 and the second surface 12 can be also
different. On the same one surface, the filler 3 in the
accommodation mechanism 2 can also include multiple kinds, thereby
a displayed pattern can have different colors and styles.
[0083] (8) The filler 3 can comprise one or more of an electrically
conductive material, a coloring material, or a dyeing material. An
electrically conductive material can be silver, copper, ITO (indium
tin oxid), graphene or an electrically conductive polymer, and an
electrically conductive material is filled in the accommodation
mechanism 2 such that the optical film of a double-sided structure
is formed as electrically conductive film, thereby can be used on a
touch screen of an electronic device such as a mobile phone screen
and a computer screen, etc. For example, an electrically conductive
material can be a nano silver ink, the nano silver ink is sintered
after being filled in the accommodation mechanism 2, then filling
of an electrically conductive material can be completed. There are
multiple coloring materials and dyeing materials, such as a
pigment, a coating. The filler 3 can be liquid or solid, for
example an electrically conductive material can be a nano silver
ink, a coloring material can be a nano colored powder. The filler 3
being filled in the accommodation mechanism 2 can make the
accommodation mechanism 2 fail to be filled to the full, just be
filled to the full or be higher than an upper edge of the
accommodation mechanism 2. Taking FIG. 2 as an example, the filler
3 is in a state of just filling to the full in a groove, the upper
end surface of the filler 3 is just flush with the upper edge of
the groove.
[0084] (9) Referring to FIG. 3, another embodiment of the present
application further provides an optical film of a double-sided
structure, comprising: a body 1 including a first polymer 100 and a
second polymer 200, having a first surface 11 and a second surface
12 opposite to each other; and an accommodation mechanism 2,
provided on the first surface 11 and the second surface 12, and
used for forming a graphic structure on a surface of the body 1;
adjacent parts 150 of the first polymer 100 and the second polymer
200 fuse with each other, such that the body 1 comprising the
accommodation mechanism 2 is an integral structure.
[0085] (10) In this embodiment, the body 1 is a cured structure,
thus the first polymer 100 and the second polymer 200 are solid.
The body 1 can be formed by fusing adjacent parts 150 of two-layer
solid polymer layers, the two-layer polymer layers are the first
polymer 100 and the second polymer 200. Accordingly, a raw material
for manufacturing the body 1 can be a primary body having a
two-layer colloidal polymer layer, for example, the first polymer
100 can be formed by curing a first colloidal polymer in a
colloidal state, accordingly, the second polymer 200 can be formed
by curing a second colloidal polymer in a colloidal state. The
first colloidal polymer and the second colloidal polymer can be a
laminated structure before curing, and have a certain fusion
property. Further, during extruding the first colloidal polymer and
the second colloidal polymer, starting from a part where both of
them contact each other, their polymers begin to fuse gradually
from less to more, thereby expand to their adjacent parts 150.
Meanwhile during lamination, curing can be performed
simultaneously, finally causing the adjacent parts 150 of the first
polymer 100 and the second polymer 200 to fuse each other, such
that the body 1 having the accommodation mechanism 2 is an integral
structure, thereby to ensure an optical film of a double-sided
structure of this embodiment also does not need and use a
substrate.
[0086] (11) The adjacent parts 150 of the first polymer 100 and the
second polymer 200 fuse each other, such that a fusion location of
the first polymer 100 and the second polymer 200 will not form an
interface, to ensure the transmittance of the whole body 1 and
improve the display quality of the optical film of a double-sided
structure. As described above, in order to ensure fusion of the
adjacent parts 150 of the first polymer 100 and the second polymer
200, it needs to ensure lamination and curing to be performed
simultaneously during manufacturing, of course, a certain time
interval can exist between them, but it at least needs to ensure
there exists an overlap between the lamination time and the curing
time. Further, in order to reduce an impact of the body 1 formed by
the first polymer 100 and the second polymer 200 on a light path of
a light ray and to ensure a display effect, a difference value of a
refractive index of the first polymer 100 and the second polymer
200 is less than 0.5.
[0087] (12) The first polymer 100 and the second polymer 200 can
include a class of polymers and a polymer, or the polymer can also
include a mixed polymer formed by multiclass of polymers or a
plurality of polymers, this embodiment is not limited to that. Of
course, the body 1 is a colloidal primary body before being formed
integrally, the primary body will transform from a colloidal state
to a solid state under heating or irradiation by a heat source or
an irradiation source. Therefore, preferably, the polymer can
comprise a thermosetting resin and/or photocurable resin. Namely,
the first polymer 100 and the second polymer 200 each can be a
thermosetting resin, a photocurable resin or a mixture of the
thermosetting resin and the photocurable resin. For example, the
first polymer 100 and the second polymer 200 can be an UV gel (a
photosensitive gel), considering that an UV gel in practice has
multiple types and kinds, the first polymer 100 and the second
polymer 200 each can be also a mixture of multiple UV gels.
[0088] (13) Referring to FIG. 4, an embodiment of the present
application further provides a manufacturing method of an optical
film of a double-sided structure, including the following
steps.
[0089] S1. acquiring a primary body with a material being a polymer
and presenting a colloidal state at a normal temperature and
pressure.
[0090] In this step, a primary body as a whole can be layered, can
be a colloidal polymer layer, the colloidal state can mean having a
certain liquidity and having a certain adhesion. The polymer
includes a polymer or multiple polymers, the polymer at this moment
presents a colloidal state at normal temperatures and pressures.
After a polymer is cured, the polymer transforms from a colloidal
state to a solid state. Of course, it still keeps a solid state at
normal temperatures and pressures.
[0091] Polymers in the primary body do not need to distribute
evenly, of course, it is best to distribute evenly. When polymers
distribute unevenly, it is ok to have no interface inside the
formed body 1, thereby to ensure the transmittance of the body 1
and not to affect a pattern display effect. The primary body can
include an one-layer polymer (layer), can also include a two-layer
polymer (layer), of course, can also include multiple layers based
on demands, this embodiment is not limited to these.
[0092] S2. forming a primary accommodation mechanism by using an
imprinting device to imprint on the primary body's two surfaces
opposite to each other.
[0093] The primary body's two surfaces opposite to each other are
the primary body's two sides having the largest area, the area of
the two sides is much larger than the area of other sides of the
primary body. The imprinting device 8 can extrude a primary body,
meanwhile can imprint a surface of a primary body to form a primary
accommodation mechanism. By extruding a primary body, a thickness
of the primary body can be controlled, meanwhile where a primary
body is a multilayer polymer, fusion between polymers at adjacent
layers can be improved. The imprinting device 8 can be a protruding
mold in which an end face has a protrusion with a certain shape
track. When using, the imprinting device 8 is placed at two sides
of a primary body, or a primary body is inputted in the imprinting
device 8.
[0094] A shape track of the primary accommodation mechanism matches
with the above protrusion with a certain shape track. The primary
accommodation mechanism becomes the accommodation mechanism 2 after
curing. In contrast, the primary accommodation mechanism is still
in a colloidal state, and still has a possibility of deformation.
The primary accommodation mechanism can be a trench, a groove, a
recess or a hole. In this embodiment, the primary accommodation
mechanism being a groove is a preferred solution. A groove can be
in a regular or irregular shape, or can be latticed or curved, the
present application is not limited to these. When an optical film
of a double-sided structure manufactured in this embodiment is used
for manufacturing a conductive film, a groove being latticed can be
a preferred solution. Thereby, a groove has mutually vertical
meridian lines and latitude lines to divide the first surface 11
and the second surface 12 into a plurality of square regions. When
an optical film of a double-sided structure manufactured in this
embodiment is used for manufacturing an anti-counterfeit label or
packaging, a logo, a mark or a profile or character of a pattern
can be displayed by means of a groove track. Of course, a shape of
a cross-section of the accommodation mechanism 2 can be also
multiple, can be semicircular, semielliptic or irregularly shaped,
and a shape of a cross-section of a primary accommodation mechanism
on the same one surface can include one or more of an U shape, an
arc shape and an irregular shape.
[0095] (14) Specifically, the imprinting device 8 may comprise a
laminating mold having a predetermined imprint structure or at
least two rollers having a predetermined imprint structure; the
predetermined imprint structure matches with the primary
accommodation mechanism. A predetermined imprint structure is the
above protrusion with a certain shape track. Laminating molds can
be two separated plate-shaped molds, on a surface of which the
predetermined imprint structure is provided. When using, a primary
body is placed on a plate-shaped mold, then the other plate-shaped
mold is placed on the primary body, an acting force is applied on
the plate-shaped molds to extrude the primary body and to form a
primary accommodation mechanism on the primary body's two surfaces
opposite to each other.
[0096] (15) As shown in FIG. 5, at least two rollers having a
predetermined imprint structure can be placed at two sides of a
primary body during imprinting, and produce an extrusion force on
the primary body. The at least rollers are driven by a drive
mechanism and roll. Since a roller can continuously roll and
laminate, compared with a mode of laminating through a plate-shaped
mold, a mode for laminating by using a roller can accelerate to a
greater extent the speed of manufacturing an optical film of a
double-sided structure. A predetermined imprint structure can be
placed on an outer peripheral face of a roller, can be formed
directly by an outer peripheral face of a roller, for example a
predetermined imprint structure is imprinted at an outer peripheral
face of a roller, or a predetermined imprint structure can also be
a cylindrical mold, and is located on an outer peripheral face of
the cylindrical mold. Different cylindrical molds have different
predetermined imprint structures, the cylindrical mold can be
detachably sleeved on a roller. When needing accommodation
mechanisms 2 having different styles, only corresponding
cylindrical molds need to be replaced.
[0097] (16) It needs to be stated that primary accommodation
mechanisms on a primary body's two surfaces opposite to each other
can be formed simultaneously or can be formed not simultaneously.
For example, when using the above two plate-shaped molds for
imprinting, since a primary body is first placed on one
plate-shaped mold, then the other plate-shaped mold is placed. It
can be seen that primary accommodation mechanisms on two surfaces
are not formed simultaneously. Moreover, when imprinting a primary
body by adopting two rollers, since the primary body is located
between two rollers, and at least two rollers roll simultaneously,
it can be seen that primary accommodation mechanisms on two
surfaces are formed simultaneously.
[0098] S3. curing the primary body to obtain the optical film of a
double-sided structure which is an integral structure and has an
accommodation mechanism.
[0099] In this step, whereas a primary body can adopt a colloidal
thermosetting resin and/or photocurable resin, thus an irradiation
source or a heat source can be adopted to irradiate or heat the
primary body, such that the primary body is cured. For example,
when a primary body is a colloidal UV gel, an irradiation source
can be selected as an ultraviolet source.
[0100] (17) Curing a primary body and imprinting a primary body can
be performed simultaneously, or can be performed at a certain time
interval. However, it needs to be pointed out that an optical film
of a double-sided structure can be obtained once curing is
completed, at this moment, imprinting cannot continue. When there
is a certain time interval between the step S3 and the step S2,
partial time of the step S3 and the step S2 can coincide. No matter
that curing a primary body and imprinting a primary body are
performed simultaneously or performed at a certain time interval, a
certain slight deformation of a primary accommodation mechanism
caused due to a primary body not in a solid state can be prevented,
thereby to have an effect on a display effect. Meanwhile, it can be
also ensured that the primary body is formed integrally as an
optical film of a double-sided structure having an integral
structure.
[0101] (18) For example, two plate-shaped molds can be ultraviolet
band transmissive light, namely the ultraviolet light can penetrate
the plate-shaped molds to enter their insides. When imprinting by
adopting two plate-shaped molds, a primary body can be imprinted
first, at this moment, a primary accommodation mechanism has been
generated on a surface of the primary body. Currently, the
ultraviolet light can be adopted directly for irradiation, without
removing the two plate-shaped molds, and the two plate-shaped molds
are removed after the primary body is completely cured. It can be
seen that in this case, although the step S3 is performed after the
step S2 is performed, both of them end simultaneously.
[0102] (19) Therefore, it needs to be pointed out that there is no
obvious start and end sequence for the step S3 and the step S2, the
step S3 and the step S2 can start simultaneously and can end
simultaneously, or the step S3 is performed earlier than the step
S2 but ends later than the step S2, or the step S3 is performed
later than the step S2 and ends later than the step S2, or in other
sequences. Other ways or improvements made by persons skilled in
the art without losing the essence revealed by the present
application should fall into the protection scope of the present
application.
[0103] Continuing to refer to FIG. 4, in a better embodiment, an
optical film of a double-sided structure provided by the present
application further includes the following steps.
[0104] S4. filling a filler in the accommodation mechanism of the
optical film of a double-sided structure to form a graphic
structure.
[0105] (20) In the step S4, the filler 3 can comprise one or more
of an electrically conductive material, a coloring material, or a
dyeing material. An electrically conductive material can be silver,
copper, ITO, graphene or an electrically conductive polymer, and an
electrically conductive material is filled in the accommodation
mechanism 2 such that the optical film of a double-sided structure
is formed as electrically conductive film, thereby can be used on a
touch screen of an electronic device such as a mobile phone screen
and a computer screen, etc. For example, an electrically conductive
material can be a nano silver ink, the nano silver ink is sintered
after being filled in the accommodation mechanism 2, then filling
of an electrically conductive material can be completed. There are
multiple coloring materials and dyeing materials, such as a
pigment, a coating. The filler 3 can be liquid or solid, for
example an electrically conductive material can be a nano silver
ink, a coloring material can be a nano colored powder. The filler 3
being filled in the accommodation mechanism 2 can make the
accommodation mechanism 2 fail to be filled to the full, just be
filled to the full or be higher than an upper edge of the
accommodation mechanism 2.
[0106] (21) Whereas two surfaces of an optical film of a
double-sided structure have same or different accommodation
mechanisms 2, a filler 3 in an accommodation mechanism 2 on the
same one surface can be one or more kind. Accordingly, for
accommodation mechanisms 2 on two surfaces, the filler 3 can be
also same or different, the present application is not limited to
these.
[0107] Continuing to refer to FIG. 4, in another better embodiment,
an optical film of a double-sided structure provided by the present
application further includes the following steps:
[0108] S5. cutting the optical film of a double-sided structure
into film units having a predetermined size.
[0109] (22) In this step, a cutting tool can be adopted to cut the
optical film of a double-sided structure. For example, the optical
film of a double-sided structure can be cut into a rectangular or
square shape, a circular or an irregular shape. Of course, cutting
can be also carried out based on a specific shape, style or scope
of a pattern on the optical film of a double-sided structure. A
predetermined size can be set based on a practical use of the
optical film of a double-sided structure. For example, the optical
film of a double-sided structure is used for a mobile phone screen,
while currently most of mobile phone screens are 4 inches and 5.5
inches, the optical film of a double-sided structure can be cut
into a corresponding size. Whereas the optical film of a
double-sided structure is provided with an accommodation mechanism
2, when cutting, the integrity of the accommodation mechanism 2
needs to be ensured as much as possible. For example, when the
accommodation mechanism 2 is a groove, the situation of dividing
the groove into two segments needs to be avoided as much as
possible.
[0110] (23) It needs to be stated that there is no obvious
sequential order for performing the step S5 and the step S4, the
step S5 can be performed earlier than the step S4, namely a filler
3 is filled after cutting the optical film of a double-sided
structure; or the step S4 can be performed earlier than the step
S5, namely first a filler 3 is filled for the optical film of a
double-sided structure, then cutting is performed, the present
application is not limited to these.
[0111] (24) Continuing to refer to FIG. 5, in a feasible
embodiment, the imprinting device 8 can comprises a first roller 81
and a second roller 82 which are arranged in parallel and are
spaced with a predetermined distance. The predetermined imprint
structure comprises a first predetermined imprint structure and a
second predetermined imprint structure. The first predetermined
imprint structure is provided on an outer peripheral face of the
first roller 81, and the second predetermined imprint structure is
provided on an outer peripheral face of the first roller 82.
[0112] (25) The first predetermined imprint structure and the
second predetermined imprint structure can be same, such that the
first roller 81 and the second roller 82 form the same primary
accommodation mechanism on two surfaces of a primary body. The
first predetermined imprint structure and the second predetermined
imprint structure can be different, such that the first roller 81
and the second roller 82 form different primary accommodation
mechanisms on two surfaces of a primary body. The first
predetermined imprint structure can locate directly on an outer
peripheral face of the first roller 81 by means of engraving or
forming integrally, or can be also a cylindrical mold sleeved on an
outer peripheral face of the first roller 81. The second
predetermined imprint structure can locate directly on an outer
peripheral face of the second roller 82 by means of engraving or
forming integrally, or can be also sleeved on an outer peripheral
face of the second roller 82 for a cylindrical mold.
[0113] (26) The first roller 81 and the second roller 82 are
arranged in parallel and are spaced with a predetermined distance,
an adjustment of a thickness of an optical film of a double-sided
structure can be realized by regulating a predetermined interval
distance between the first roller 81 and the second roller 82. The
first roller 81 and the second roller 82 can be horizontally
arranged opposite to each other, or can be vertically arranged
opposite to each other. Namely, the first roller 81 and the second
roller 82 can be positioned on the same one horizontal plane, or
can be positioned on the same one vertical plane. Of course, the
present application does not define too much a positional
relationship between the first roller 81 and the second roller 82,
the first roller 81 and the second roller 82 only need to be
arranged in parallel and be spaced with a predetermined distance.
But in this embodiment, the first roller 81 and the second roller
82 being horizontally arranged opposite to each other or vertically
arranged opposite to each other can be a preferred solution.
[0114] Accordingly, referring to FIG. 5 and FIG. 6, in this
embodiment, the step S2 (the imprint step) includes the following
steps.
[0115] S21. inputting the primary body between the first roller and
the second roller;
[0116] S22. forming a primary accommodation mechanism by using the
first roller and the second roller to imprint on two surfaces
opposite to each other of the primary body.
[0117] In the step S21, the primary body can be inputted between
the first roller and the second roller at a predetermined speed,
considering that when horizontally arranging the first roller 81
and the roller 82 opposite to each other, it is easy for a speed of
the primary body entering into the imprinting device 8 to be
affected by the gravity, thereby being difficult to be controlled,
thus at this moment, the first roller 81 and the second roller 82
can be vertically arranged opposite to each other, and the primary
body is inputted between the first roller and the second roller via
an input pushing mechanism.
[0118] In the step S22, the first roller and the second roller's
own rolling during imprinting can produce a certain friction on the
primary body, to drive the primary body to move. Relying on the
input pushing mechanism and the friction, the first roller and the
second roller can continuously imprint the primary body, thereby to
improve the production efficiency.
[0119] Referring to FIG. 7, in a specific embodiment, the step S2
(the imprint step) and the step S3 (the curing step) can include
the following steps.
[0120] S200. imprinting on a surface of the primary body by using
an imprinting device to form a primary accommodation mechanism;
[0121] S300. meanwhile, curing the primary body to obtain the
optical film of a double-sided structure which is an integral
structure and has an accommodation mechanism.
[0122] In this embodiment, the step S3 and the step S2 are
performed simultaneously, namely the step S200 and the step S300
are performed simultaneously, such that a certain slight
deformation of a primary accommodation mechanism caused due to a
primary body not in a solid state can be prevented, thereby to have
an effect on a display effect. Meanwhile, it can be also ensured
that the primary body is formed integrally as an optical film of a
double-sided structure having an integral structure.
[0123] (27) Taking the imprinting device 8 being the first roller
81 and the second roller 82 as an example, the first roller 81 and
the second roller 82 can be also ultraviolet band transmissive
light, namely the ultraviolet light can penetrate the plate-shaped
molds to enter between the first roller 81 and the second roller
82, thereby to irradiate the primary body. The first roller 81 and
the second roller 82 extrude a surface of the primary body and
simultaneously imprint to form a primary accommodation mechanism,
meanwhile cure the primary body, curing starts from the primary
body entering into the first roller 81 and the second roller 82 and
ends the primary body leaving the first roller 81 and the second
roller 82. Of course, the moment of starting to cure the body 1 and
the moment of starting to enter between the first roller 81 and the
second roller 82 are not necessarily same, and are deemed to be
performed simultaneously within a time interval having a
controllable range.
[0124] For another example, that the primary body may comprise a
first colloidal polymer and a second colloidal polymer is taken as
an example.
[0125] Accordingly, as shown in FIG. 8, the step S2 (the imprint
step) and the step S3 (the curing step) can include the following
steps.
[0126] S201. using an imprinting device to extrude the first
colloidal polymer and the second colloidal polymer to adjacent
parts for fusion;
[0127] S202. meanwhile, using the imprinting device to imprint on
the first colloidal polymer's surface far away from the second
colloidal polymer to form the primary accommodation mechanism;
[0128] S203. meanwhile, using the imprinting device to imprint on
the second colloidal polymer's surface far away from the first
colloidal polymer to form the primary accommodation mechanism;
[0129] S300. meanwhile, curing the primary body to obtain the
optical film of a double-sided structure which is an integral
structure and has an accommodation mechanism.
[0130] (28) As shown in FIG. 9, the embodiments of the present
application provide a polymer film 20 which may comprise a polymer
having a first surface and a second surface opposite to each other.
A microlens structure 201 is formed on the first surface; an
accommodation structure 202 is formed on the second surface, the
accommodation structure 202 is used for forming a graphic structure
203 which images through the microlens structure 201, as shown in
FIG. 10.
[0131] (29) The polymer can be a single polymer, or can be a mixed
polymer formed by mixing a plurality of single polymers which will
not react. The transmittance of the polymer can be greater than
70%, namely the polymer has a transparent color or is visually
displayed transparent. The polymer may be a thermosetting resin
and/or photocurable resin, such as an UV gel. The microlens
structure 201 and the accommodation structure 202 can be
respectively positioned on a first surface and a second surface
opposite to each other in an one-layer polymer layer which is
composed of such polymer, and at this moment, the polymers in the
polymer layer can distribute evenly, or can distribute unevenly.
Since the microlens structure 201 and the accommodation structure
202 are formed in the same polymer layer, there is no interface
between the microlens structure 201 and the accommodation structure
202, namely the microlens structure 201 and the accommodation
structure 202 are formed as an integral structure.
[0132] (30) The microlens structure 201 may contain a microlens
array which may contain one or more microlenses. There is no gap
among the plurality of microlenses, so as to reduce the overall
volume of the polymer film; there can be a gap among the plurality
of microlenses (as shown in FIG. 11), such that the integrity of a
cut microlens can be ensured when cutting the polymer film, thereby
the subsequent imaging effect of the microlens can be ensured.
[0133] The accommodation structure 202 may contain one or more
grooves, or may contain one or more micro grooves (i.e. grooves in
a micron level). The (micro) grooves are used for being filled with
a filler, so as to form a graphic structure 203.
[0134] (31) The graphic structure 203 contains a pattern formed
after a filler is filled. The filler may be a material for which
there is a refractive index difference between the polymer and the
light, including a coloring material, a dyeing material, a metal
material or an electrically conductive material, etc., such as an
ink. It needs to be stated that the color of the filler can be
different from the color of the polymer, such that when observing
imaging of a graphic structure, people can obviously distinguish a
pattern in the graphic structure.
[0135] (32) The pattern may be a pattern or a micro pattern, or may
be a plurality of same or different patterns or micro patterns
(i.e. patterns in a micron level), such as a pattern for which it
is easy to distinguish its shape, like a graph, a grid, a
character, a number, a symbol, a landscape painting and/or a Logo,
etc. The different (micro) patterns can be different in terms of
size of (micro) patterns; or can be different in terms of shape of
(micro) patterns; or can be different in terms of formation of
(micro) patterns, for example a first (micro) pattern is a company
name, the second (micro) pattern is a company Logo.
[0136] (33) The accommodation structure 202 (or the graphic
structure 203) can be arranged matching with the microlens
structure 201, specifically the accommodation structure 202 (or the
graphic structure 203) can match with the location of the microlens
structure 201. For example, a micro pattern in the accommodation
structure 202 is arranged directly facing a microlens in the
microlens structure 201, so as to improve utilization of a polymer
material. The arrangement of matching the accommodation structure
202 (or the graphic structure 203) with the microlens structure 201
can also include an arrangement of one to one corresponding
microlenses in the microlens structure 201 to micro grooves in the
accommodation structure (or micro patterns in the graphic structure
203), which facilitates to ensure that each cut imaging film unit
contains at least one complete microlens and micro groove (or micro
pattern) when cutting an imaging film.
[0137] (34) The graphic structure 203 can be located near a focal
plane of the microlens structure 201, can image via the microlens
structure 201, and an enlarged image of the graphic structure 203
can be observed at the microlens structure 201's side opposite to
the graphic structure 203. Specifically, each micro pattern in the
graphic structure 203 can be located near a corresponding focal
plane in the microlens structure 201, each micro pattern can image
via a corresponding microlens, and an enlarged image of a
corresponding micro pattern can be observed at another side of each
microlens. The focal plane can be a plane which has represented a
focus of a microlens and is perpendicular to a principal optic axis
of a microlens array.
[0138] (35) A distance between a top of the microlens structure 201
and a top of the accommodation structure 202 (or the graphic
structure 203) can be 2150 micrometers. When a distance between a
microlens structure and a graphic structure is very small, it can
be understood that the graphic structure is embedded in the
microlens structure, as shown in FIG. 12. As can be seen from FIG.
12, the graphic structure 503 is embedded in the microlens
structure 501. The smaller a distance between a microlens structure
and a graphic structure is, the thinner a thickness of a polymer
film is, which can not only save the cost, but also is easier to
cut off when hot stamping.
[0139] (36) In another embodiment, a surface of a graphic structure
can be provided with a protection structure. The protection
structure is used for protecting a graphic structure, so as to
prevent deformation of a (micro) pattern in the graphic structure
or external damages to a (micro) pattern, affecting an image
effect.
[0140] (37) As can be seen from the above description, a polymer
film provided by the embodiments of the present application can be
an one-layer film structure, a microlens structure and an
accommodation structure are formed in the same polymer layer (i.e.
formed as an integral structure), and there is no substrate layer,
which realizes the purpose of reducing a thickness of a polymer
film. In addition, the polymer film has no substrate layer, thus
its mechanical property is very poor, such that the polymer film
can be cut off easily when hot stamping.
[0141] (38) The thickness of the polymer film in the embodiments of
the present application is thin, its thickness can reach less than
dozens of micrometers, even several micrometers, and it is cut off
easily. Therefore, this polymer film is easily transferred, and can
reduce a weight and save the cost.
[0142] (39) The embodiments of the present application also provide
another polymer film 60, as shown in FIG. 13. The polymer film 60
may comprise a first polymer having a first surface and a second
polymer having a second surface, the first surface and the second
surface being opposite to each other; the first surface is provided
with a microlens structure 601; and the second surface is provided
with an accommodation structure 602 which is used for forming a
graphic structure 603 which images through the microlens structure
601, as shown in FIG. 14.
[0143] (40) The first polymer and the second polymer each can be a
single polymer, or can be a mixed polymer formed by a plurality of
single polymers which will not react. The transmittance of the
first polymer and the second polymer each can be greater than 70%,
namely the first polymer and the second polymer have a transparent
color or are visually displayed transparent. The first polymer and
the second polymer each may be a resin material, including a
thermosetting resin and/or photocurable resin, such as an UV gel. A
difference of refractive indexes between the first polymer and the
second polymer can be less than 0.5, so as to ensure that the
effect of an image in an imaging film observed by people is not
influenced.
[0144] (41) An adjacent part between the first polymer and the
second polymer is formed with a fusion portion. The adjacent part
can be a contact part between the first polymer and the second
polymer when using a mold to extrude the first polymer and the
second polymer to form a microlens preliminary structure and an
accommodation preliminary structure. The fusion portion can be a
region formed by fusing the first polymer and the second polymer at
a predetermined proportion. The predetermined proportion can be
N:M, wherein N and M respectively are a content of a first polymer
and a second polymer at a juncture of adjacent parts of the
microlens structure 601 and the accommodation structure 602, its
value can be 0.about.100%, but does not include 0 and 100%. It
needs to be stated that a content of a first polymer in the
microlens structure 601 is 100%; a content of a second polymer in
the accommodation structure 602 is 100%. Therefore, the microlens
structure 601 and the accommodation structure 202 can be deemed as
an integral structure, there is no interface between a microlens
structure and an accommodation structure, or there is no obvious
boundary between a layer and a layer on a section of a polymer
film, or a presented boundary is a regular and tidy boundary.
[0145] (42) A polymer film 60 provided by the embodiments of the
present application differs from the polymer film 20 as shown in
FIG. 1 in that the polymer film 60 is composed of two polymers,
while the polymer film 20 is composed of one polymer. For the
description of the polymer film 60, please refer to the description
of the polymer film 20 in the above embodiments, detailed
description thereof is omitted.
[0146] (43) As can be seen from the above descriptions, although a
polymer film provided by the embodiments of the present application
includes two polymers, it can be deemed as an one-layer film
structure. Although a microlens structure and an accommodation
structure are respectively formed on a first surface of a first
polymer and a second surface of a second polymer, a fusion portion
is formed between these two polymers, thus a microlens structure
and an accommodation structure can be deemed as an integral
structure. And a polymer film provided by the embodiments of the
present application does not have a substrate layer either, thus
can also realize the purpose of reducing the thickness of the
polymer film. In addition, the mechanical property of the polymer
film is very poor since there is no substrate layer, such that the
polymer film can be cut off easily when hot stamping.
[0147] (44) The thickness of the polymer film in the embodiments of
the present application is thin, its thickness can reach less than
dozens of micrometers, even several micrometers, and it is cut off
easily. Therefore, this polymer film is easily transferred, and can
reduce a weight and save the cost.
[0148] (45) As shown in FIG. 15, the embodiments of the present
application further provide another polymer film 80 which may
comprise a polymer having a first surface and a second surface
opposite to each other. A microlens structure 801 is formed on the
first surface; a reflection structure 804 is provided on a surface
of the microlens structure 801; an accommodation structure 802 is
formed on the second surface, the accommodation structure 802 is
used for forming a graphic structure 803 which images through the
microlens structure 801, as shown in FIG. 16.
[0149] (46) The polymer can be a single polymer, or can be a mixed
polymer formed by mixing a plurality of single polymers which will
not react. The transmittance of the polymer can be greater than
70%, namely the polymer has a transparent color or is visually
displayed transparent. The polymer may be a thermosetting resin
and/or photocurable resin, such as an UV gel. The microlens
structure 801 and the accommodation structure 802 can be
respectively positioned on a first surface and a second surface
opposite to each other in an one-layer polymer layer which is
composed of such polymer, and at this moment, the polymers in the
polymer layer can distribute evenly, or can distribute unevenly.
Since the microlens structure 801 and the accommodation structure
802 are formed in the same polymer layer, there is no interface
between the microlens structure 801 and the accommodation structure
802, namely the microlens structure 801 and the accommodation
structure 802 are formed as an integral structure.
[0150] (47) The microlens structure 801 may contain a microlens
array which may contain one or more microlenses. There is no gap
among the plurality of microlenses, so as to reduce the overall
volume of the polymer film; there can be a gap among the plurality
of microlenses, such that the integrity of a cut microlens can be
ensured when cutting the polymer film, thereby the subsequent
imaging effect of the microlens can be ensured.
[0151] The accommodation structure 802 may contain one or more
grooves, or may contain one or more micro grooves (i.e. grooves in
a micron level). The (micro) grooves are used for being filled with
a filler, so as to form a graphic structure 803.
[0152] (48) The graphic structure 803 contains a pattern formed
after a filler is filled. The filler may be a material for which
there is a refractive index difference between the polymer and the
light, including a coloring material, a dyeing material, a metal
material or an electrically conductive material, etc., such as an
ink. It needs to be stated that the color of the filler can be
different from the color of the polymer, such that when observing
imaging of a graphic structure, people can obviously distinguish a
pattern in the graphic structure.
[0153] (49) The pattern may be a pattern or a micro pattern, or may
be a plurality of same or different patterns or micro patterns
(i.e. patterns in a micron level), such as a pattern for which it
is easy to distinguish its shape, like a graph, a grid, a
character, a number, a symbol, a landscape painting and/or a Logo,
etc. The different (micro) patterns can be different in terms of
size of (micro) patterns; or can be different in terms of shape of
(micro) patterns; or can be different in terms of formation of
(micro) patterns, for example a first (micro) pattern is a company
name, the second (micro) pattern is a company Logo.
[0154] (50) The accommodation structure 802 (or the graphic
structure 803) can be arranged matching with the microlens
structure 801, specifically the accommodation structure 802 (or the
graphic structure 803) can match with the location of the microlens
structure 801. For example, a micro pattern in the accommodation
structure 803 is arranged directly facing a microlens in the
microlens structure 801, so as to improve utilization of a polymer
material. The arrangement of matching the accommodation structure
802 (or the graphic structure 803) with the microlens structure 801
can also include an arrangement of one to one corresponding
microlenses in the microlens structure 801 to micro grooves in the
accommodation structure (or micro patterns in the graphic structure
803), which facilitates to ensure that each cut imaging film unit
contains at least one complete microlens and micro groove (or micro
pattern) when cutting an imaging film.
[0155] (51) The graphic structure 803 can be located near a focal
plane of the microlens structure 801, can image via the microlens
structure 801, and under an action of the reflection structure 804,
an enlarged image of the graphic structure 803 can be observed at a
side where the graphic structure 803 is located. Specifically, each
micro pattern in the graphic structure 803 can be located near a
corresponding focal plane in the microlens structure 801, each
micro pattern can image via a corresponding microlens, and an
enlarged image of a corresponding micro pattern can be observed at
a side where the graphic structure 803 is located.
[0156] (52) A distance between a top of the microlens structure 801
and a top of the accommodation structure 802 (or the graphic
structure 803) can be 2.about.150 micrometers. When a distance
between a microlens structure and a graphic structure is very
small, it can be understood that the graphic structure is embedded
in the microlens structure. The smaller a distance between a
microlens structure and a graphic structure is, the thinner a
thickness of a polymer film is, which can not only save the cost,
but also is easier to cut off when hot stamping.
[0157] The reflection structure 804 can be a transparent material,
an opaque material or a semi-transparent material. The thickness of
the reflection structure 804 can be 0.02.about.5 micrometers.
[0158] (53) As can be seen from the above description, a polymer
film provided by the embodiments of the present application can be
an one-layer film structure, a microlens structure and an
accommodation structure are formed in the same polymer layer (i.e.
formed as an integral structure), and there is no substrate layer,
which realizes the purpose of reducing a thickness of a polymer
film. In addition, the polymer film has no substrate layer, thus
its mechanical property is very poor, such that the polymer film
can be cut off easily when hot stamping. In addition, a surface of
a microlens structure is provided with a reflection structure, such
that in an practical application, a side where a graphic structure
is located can be fit with an practical application product, and
imaging of the graphic structure is observed at a side where the
graphic structure is located, which can avoid the problem of
affecting a user experience effect caused by irregularities of a
side where a microlens structure is located, when imaging of the
graphic structure is observed at a side where a microlens structure
is located, thus facilitating to improve a user's experience
feelings.
[0159] The thickness of the polymer film in the embodiments of the
present application is thin, its thickness can reach less than
dozens of micrometers, even several micrometers, and it is cut off
easily. Therefore, this polymer film is easily transferred.
[0160] (54) The embodiments of the present application also provide
another polymer film 100, as shown in FIG. 17. The polymer film 100
may comprise a first polymer having a first surface and a second
polymer having a second surface, the first surface and the second
surface being opposite to each other; a microlens structure 1001 is
formed on the first surface; a reflection structure 1004 is
provided on a surface of an accommodation structure opposite to the
microlens structure 1001; and the second surface is provided with
an accommodation structure 1002 which is used for forming a graphic
structure 1003 which images through the microlens structure 1001,
as shown in FIG. 18.
[0161] (55) The first polymer and the second polymer each can be a
single polymer, or can be a mixed polymer formed by a plurality of
single polymers which will not react. The transmittance of the
first polymer and the second polymer each can be greater than 70%,
namely the first polymer and the second polymer have a transparent
color or are visually displayed transparent. The first polymer and
the second polymer each may be a resin material, including a
thermosetting resin and/or photocurable resin, such as an UV gel. A
difference of refractive indexes between the first polymer and the
second polymer can be less than 0.5, so as to ensure that the
effect of an image in an imaging film observed by people is not
influenced.
[0162] (56) An adjacent part between the first polymer and the
second polymer is formed with a fusion portion. The adjacent part
can be a contact part between the first polymer and the second
polymer when using a mold to extrude the first polymer and the
second polymer to form a microlens preliminary structure and an
accommodation preliminary structure. The fusion portion can be a
region formed by fusing the first polymer and the second polymer at
a predetermined proportion. The predetermined proportion can be
N:M, wherein N and M respectively are a content of a first polymer
and a second polymer at a juncture of adjacent parts of the
microlens structure 601 and the accommodation structure 602, its
value can be 0.about.100%, but does not include 0 and 100%. It
needs to be stated that a content of a first polymer in the
microlens structure 1001 is 100%; a content of a second polymer in
the accommodation structure 1002 is 100%. Therefore, the microlens
structure 1001 and the accommodation structure 1002 can be deemed
as an integral structure, there is no interface between a microlens
structure and an accommodation structure, or there is no obvious
boundary between a layer and a layer on a section of a polymer
film, or a presented boundary is a regular and tidy boundary.
[0163] (57) A polymer film 100 provided by the embodiments of the
present application differs from the polymer film 80 as shown in
FIG. 15 in that the polymer film 100 is composed of two polymers,
while the polymer film 80 is composed of one polymer. For the
detailed description of the polymer film 100, please refer to the
description of the polymer film 80 in the above embodiments,
detailed description thereof is omitted.
[0164] (58) As can be seen from the above descriptions, although a
polymer film provided by the embodiments of the present application
includes two polymers, it can be deemed as an one-layer film
structure. Although a microlens structure and an accommodation
structure are respectively formed on a first surface of a first
polymer and a second surface of a second polymer, a fusion portion
is formed between these two polymers, thus a microlens structure
and an accommodation structure can be deemed as an integral
structure. And a polymer film provided by the embodiments of the
present application does not have a substrate layer either, thus
can also realize the purpose of reducing the thickness of the
polymer film. In addition, the mechanical property of the polymer
film is very poor since there is no substrate layer, such that the
polymer film can be cut off easily when hot stamping. In addition,
a surface of a microlens structure is provided with a reflection
structure, such that in an practical application, a side where a
graphic structure is located can be fit with an practical
application product, and imaging of the graphic structure is
observed at a side where the graphic structure is located, which
can avoid the problem of affecting a user experience effect caused
by irregularities of a side where a microlens structure is located,
when imaging of the graphic structure is observed at a side where a
microlens structure is located, thus facilitating to improve a
user's experience feelings.
[0165] (59) The thickness of the polymer film in the embodiments of
the present application is thin, its thickness can reach less than
dozens of micrometers, even several micrometers, and it is cut off
easily. Therefore, this polymer film is easily transferred.
[0166] The embodiments of the present application also provide a
method for preparing a polymer film 60, as shown in FIG. 19. The
method includes:
[0167] S1: acquiring a polymer which presents a colloidal state at
a normal temperature and pressure.
[0168] The polymer can be a polymer, or can be two polymers. Each
polymer can be a single polymer, such as a curable resin or UV gel,
etc., or can be a mixed polymer of a plurality of polymers which
will not react with each other.
[0169] The polymer can be acquired by using a method in a prior
art, detailed description thereof will be omitted.
[0170] S2: using a first mold having a microlens style to extrude a
first side of the polymer, and using a second mold having a
predetermined accommodation structure to extrude a second side of
the polymer, to form a microlens preliminary structure and an
accommodation preliminary structure which are in an integral
structure; wherein the first side and the second side are opposite
to each other.
[0171] (60) After acquiring the polymer, using a first mold having
a microlens style to extrude a first side of the polymer to form a
microlens preliminary structure, and using a second mold having a
predetermined accommodation structure to extrude a second side of
the polymer to form an accommodation preliminary structure. The
microlens preliminary structure and the accommodation preliminary
structure form an integral structure during extruding. The
microlens structure can be a microlens array having one or more
microlenses. The accommodation preliminary structure can contain
one or more micro grooves.
[0172] 61) Using a first mold having a microlens style to extrude a
first side of the polymer to form a microlens preliminary structure
and using a second mold having a predetermined accommodation
structure to extrude a second side of the polymer to form an
accommodation preliminary structure can be simultaneously using a
first mold having a microlens style and a second mold having a
predetermined accommodation structure to extrude a first side and a
second side of the polymer to form a microlens preliminary
structure and an accommodation preliminary structure; or can be
first using a first mold having a microlens style to extrude a
first side of the polymer to form a microlens preliminary
structure, then within a first predetermined time interval, using a
second mold having a predetermined accommodation structure to
extrude a second side of the polymer to form an accommodation
preliminary structure; can also be first using a second mold having
a predetermined accommodation structure to extrude a second side of
the polymer to form an accommodation preliminary structure, then
within a first predetermined time interval, using a first mold
having a microlens style to extrude a first side of the polymer to
form a microlens preliminary structure. The first predetermined
time interval can be set based on actual operation situations.
[0173] (62) When the polymer is a polymer, the first mold and the
second mold can be used to simultaneously extrude a first side and
a second side of the polymer, or to extrude a first side and a
second side of the polymer within a first predetermined time
interval, to form a microlens preliminary structure and an
accommodation preliminary structure; when the polymer is two
polymers, such as a first polymer and a second polymer, the first
mold can be used to extrude a first side of the first polymer,
meanwhile or within first predetermined time interval, the second
mold can be used to extrude a second side of the second polymer,
and during extruding, adjacent parts of the first polymer and the
second polymer contact to form a fusion portion, and the microlens
preliminary structure and the accommodation preliminary structure
are formed.
[0174] S3. curing the microlens preliminary structure and the
accommodation preliminary structure, to respectively form a
microlens structure and an accommodation structure, so as to obtain
the polymer film.
[0175] (63) After forming the microlens preliminary structure and
the accommodation preliminary structure, the microlens preliminary
structure and the accommodation preliminary structure can be cured,
to respectively form a microlens structure and an accommodation
structure. Curing the microlens preliminary structure and the
accommodation preliminary structure can including simultaneously
curing the microlens preliminary structure and the accommodation
preliminary structure; or first curing the microlens preliminary
structure, then curing the accommodation preliminary structure when
the microlens preliminary structure is cured incompletely; or first
curing the accommodation preliminary structure, then curing the
microlens preliminary structure when the accommodation preliminary
structure is cured incompletely.
[0176] (64) Curing the microlens preliminary structure and the
accommodation preliminary structure can be directly thermocuring or
photocuring the microlens preliminary structure and the
accommodation preliminary structure; or by using an irradiation
source or a heat source on the first mold and/or the second mold to
realize curing of the microlens preliminary structure and the
accommodation preliminary structure. For example, when the polymer
is a UV gel, by using UV-irradiation, the microlens preliminary
structure and the accommodation preliminary structure are cured to
form a microlens structure and an accommodation structure.
[0177] (65) In each of the above embodiments, an adhesive force of
the first mold and the polymer is greater than an adhesive force of
the second mold and the polymer, such that when separating the
second mold, the polymer is not separated from the first mold,
thereby avoiding subsequent influence on a filling material in a
groove structure.
[0178] (66) As can be seen from the above steps, in a method for
preparing a polymer film provided by the embodiments of the present
application, a microlens structure and an accommodation structure
can be formed in one lump and cured simultaneously, there is no
need to prepare a substrate layer, thereby the thickness of the
polymer film can be reduced. In addition, this method is simple in
terms of process, save materials, reduce the cost and is suitable
for industrial production.
[0179] In another embodiment, in order that the polymer film can be
used for imaging, the method can also include:
[0180] S4: filling a filler in an accommodation structure and
forming a graphic structure, the filler and the polymer having
different refractive indexes.
[0181] After obtaining the polymer film, a filler can be filled in
the accommodation structure, curing measures such as drying or
sintering, etc. can be taken for the filler, to form a graphic
structure. The filler can have a refractive index different from
the polymer, its color can also be different from the polymer, to
facilitate observations.
[0182] In another embodiment, in order that pattern imaging can be
observed at a side of a graphic structure to improve a user's
experience effect, the preparation method can also include:
[0183] S5: providing a reflection structure on a surface of the
microlens structure.
[0184] After forming the microlens structure, a reflection
structure can be provided on a surface of the microlens structure,
by adopting a method such as spraying, ink-jet printing, suspending
printing, evaporation, magnetron sputtering or electroplating,
etc.
[0185] In another embodiment, in order that the prepared film is
used easily, the preparation method can also include:
[0186] S6: cutting the polymer film into film units having a
predetermined size.
[0187] The film unit can at least contain a complete microlens and
a groove or a pattern.
[0188] It needs to be stated that there is no limitation on a
sequence for perform this step and the step S4.
[0189] The following is a further description on the above step by
combining with an actual preparation method.
[0190] (67) In a specific process of preparing a film, a press fit
device can be used to extrude the polymer's two sides opposite to
each other. The press fit device may comprises a first roller and a
second roller which are parallel and have a predetermined spacing
distance; the first mold is provided on an outer peripheral face of
the first roller, and the second mold is provided on an outer
peripheral face of the second roller. The first roller and the
second roller can be relatively placed vertically, or can be
relatively placed horizontally. The first roller and the second
roller can be placed facing to each other, or can be placed facing
diagonally to each other. The first mold and the second mold can be
respectively sleeved on the first roller and the second roller, or
can be respectively engraved on the first roller and the second
roller.
[0191] (68) When the first roller and the second roller can be
relatively placed vertically, the polymer is injected between these
two rollers, under actions of gravity and friction between the
rollers, the polymer vertically passes through these two rollers to
form the microlens preliminary structure and the accommodation
preliminary structure. Then, during or after forming the microlens
preliminary structure and the accommodation preliminary structure,
these two rollers can be heated simultaneously, or one of the
rollers is heated, to form a microlens structure and an
accommodation structure by curing. It needs to be stated that a
predetermined spacing distance between these two rollers can be
adjusted based on a predetermined thickness between a microlens
structure and an accommodation structure, to ensure that when the
first surface and the second surface are located in different
polymers, these two polymers form a fusion portion during the
rollers roll and extrude, in such a way there is no interface
between a microlens structure and a graphic structure which are
formed by curing.
[0192] In addition, the press fit device can also contain a cutting
tool, after obtaining a polymer film having a microlens structure
and an accommodation structure, the polymer film is cut to
facilitate subsequent use.
[0193] (69) When the first roller and the second roller can be
relatively placed horizontally, a push force can be applied to
cause the polymer to horizontally pass through these two rollers,
to form a microlens preliminary structure and an accommodation
preliminary structure, these two rollers are heated, the formed
microlens preliminary structure and accommodation preliminary
structure are cured simultaneously, to respectively form a
microlens structure and an accommodation structure. For the
detailed process for performing this mode, please refer to the
detailed execution process for vertically placing a first roller
and a second roller, detailed description thereof will be
omitted.
[0194] (70) As shown in FIG. 20, the embodiments of the present
application provide a polymer film 20. The polymer film is composed
of a first polymer layer 101 and a second polymer layer 102. A
microlens structure 201 is formed on a first surface of the first
polymer layer 101; an accommodation structure 202 is formed on a
second surface of the second polymer layer 102. The accommodation
structure 202 is used for forming a graphic structure 203 which
images through the microlens structure 201, as shown in FIG. 21.
The first surface and the second surface are arranged opposite to
each other. Specifically, the first surface is a surface in the
first polymer layer 101 far away from the second polymer layer 102,
and the second surface is a surface in the second polymer layer 102
far away from the first polymer layer 101.
[0195] (71) The first polymer layer 101 can be formed by a first
polymer; the second polymer layer 102 can be formed by a second
polymer. The first polymer and the second polymer each can be a
single polymer, or can be a mixed polymer formed by a plurality of
single polymers which will not react. The first polymer and the
second polymer can be different, for example the first polymer and
the second polymer each may be different resin materials, including
a thermosetting resin and/or photocurable resin, such as an UV gel.
The first polymer of the first polymer layer 101 can distribute
evenly, or can distribute unevenly; the second polymer of the
second polymer layer 102 can distribute evenly, or can distribute
unevenly. The transmittance of the first polymer and the second
polymer each can be greater than 70%, namely the first polymer and
the second polymer have a transparent color or are visually
displayed transparent. A difference of refractive indexes between
the first polymer and the second polymer can be less than 0.5, so
as to ensure that the effect of an image in an imaging film
observed by people is not influenced.
[0196] (72) Since the materials of forming the first polymer layer
101 and the second polymer layer 102 are different, thus when the
first polymer layer 101 and the second polymer layer 102 are not
cured and formed simultaneously, it is possible to form an
interface between the first polymer layer 101 and the second
polymer layer 102. The interface can be an interface formed by a
surface in the first polymer layer opposite to the first surface
contacting a surface in the second polymer layer opposite to the
second surface.
[0197] (73) The first polymer layer 101 and the second polymer
layer 102 being not cured and formed simultaneously can mean that
first a microlens structure 101 is formed on the first surface of
the first polymer layer 101; then the second polymer layer 102 is
coated on a surface in the first polymer layer 101 opposite to the
first surface, and an accommodation structure 102 is formed on the
second surface of the second polymer layer 102. Specifically, a
microlens preliminary structure can be formed on the first surface
of the first polymer layer 101 by using a first mold having a
microlens style, the microlens preliminary structure is cured to
form a microlens structure 201; then the second polymer layer 102
is coated on a surface in the first polymer layer opposite to the
first surface; then an accommodation preliminary structure is
formed on the second surface of the second polymer layer 102 by
using a second mold having a predetermined pattern style, the
accommodation preliminary structure is cured to form an
accommodation structure 202.
[0198] (74) The first polymer layer 101 and the second polymer
layer 102 being not cured and formed simultaneously can mean that
first an accommodation structure 102 is formed on the second
surface of the second polymer layer 102; then the first polymer
layer 101 is coated on a surface in the second polymer layer
opposite to the second surface, and a microlens structure 101 is
formed on the first surface of the first polymer layer 101. For the
detailed process, please refer to the description in the previous
paragraph, detailed description thereof will be omitted.
[0199] (75) The first polymer layer 101 and the second polymer
layer 102 being not cured and formed simultaneously can also mean
that after forming a microlens preliminary structure on the first
surface of the first polymer layer 101, the microlens preliminary
structure is cured, when the microlens preliminary structure is
cured incompletely to form a microlens structure 201, then the
second polymer layer 102 is coated on a surface in the first
polymer layer opposite to the first surface, and an accommodation
structure 102 is formed on the second surface of the second polymer
layer 102.
[0200] (76) The first polymer layer 101 and the second polymer
layer 102 being not cured and formed simultaneously can also mean
that after forming an accommodation preliminary structure on the
second surface of the second polymer layer 102, the accommodation
preliminary structure is cured; when the accommodation preliminary
structure is cured incompletely to form an accommodation structure
202, the first polymer layer 101 is coated on a surface in the
second polymer layer 102 opposite to the second surface, and a
microlens structure 201 is formed on the first surface of the first
polymer layer 101.
[0201] (77) The microlens structure 201 may contain a microlens
array which may contain one or more microlenses. There is no gap
among the plurality of microlenses, so as to reduce the overall
volume of the polymer film; there can be a gap among the plurality
of microlenses (as shown in FIG. 22), such that the integrity of a
cut microlens can be ensured when cutting the polymer film, thereby
the subsequent imaging effect of the microlens can be ensured.
[0202] The accommodation structure 202 may contain one or more
grooves, or may contain one or more micro grooves (i.e. grooves in
a micron level). The (micro) grooves are used for being filled with
a filler, so as to form a graphic structure 203.
[0203] (78) The graphic structure 203 contains a pattern formed
after a filler is filled. The filler may be a material for which
there is a refractive index difference between the first and second
polymers and the light, including a coloring material, a dyeing
material, a metal material or an electrically conductive material,
etc., such as an ink. It needs to be stated that the color of the
filler can be different from the color of the first and second
polymers, such that when observing imaging of a graphic structure,
people can obviously distinguish a pattern in the graphic
structure.
[0204] (79) The pattern may be a pattern or a micro pattern, or may
be a plurality of same or different patterns or micro patterns
(i.e. patterns in a micron level), such as a pattern for which it
is easy to distinguish its shape, like a graph, a grid, a
character, a number, a symbol, a landscape painting and/or a Logo,
etc. The different (micro) patterns can be different in terms of
size of (micro) patterns; or can be different in terms of shape of
(micro) patterns; or can be different in terms of formation of
(micro) patterns, for example a first (micro) pattern is a company
name, the second (micro) pattern is a company Logo.
[0205] (80) The accommodation structure 202 (or the graphic
structure 203) can be arranged matching with the microlens
structure 201, specifically the accommodation structure 202 (or the
graphic structure 203) can match with the location of the microlens
structure 201. For example, a micro pattern in the accommodation
structure 203 is arranged directly facing a microlens in the
microlens structure 201, so as to improve utilization of a polymer
material. The arrangement of matching the accommodation structure
202 (or the graphic structure 203) with the microlens structure 201
can also include an arrangement of one to one corresponding
microlenses in the microlens structure 201 to micro grooves in the
accommodation structure 202 (or micro patterns in the graphic
structure 203), which facilitates to ensure that each cut film unit
contains at least one complete microlens and micro groove (or micro
pattern) when cutting a polymer film.
[0206] (81) The graphic structure 203 can be located near a focal
plane of the microlens structure 201, can image via the microlens
structure 201, and an enlarged image of the graphic structure 203
can be observed at the microlens structure 201's side opposite to
the graphic structure 203. Specifically, each micro pattern in the
graphic structure 203 can be located near a corresponding focal
plane in the microlens structure 201, each micro pattern can image
via a corresponding microlens, and an enlarged image of a
corresponding micro pattern can be observed at another side of each
microlens. The focal plane can be a plane which has represented a
focus of a microlens and is perpendicular to a principal optic axis
of a microlens array.
[0207] (82) A distance between a top of the microlens structure 201
and a top of the accommodation structure 202 (or the graphic
structure 203) can be 2.about.150 micrometers. The smaller a
distance between a microlens structure and a graphic structure is,
the thinner a thickness of a polymer film is, which can not only
save the cost, but also is easier to cut off when hot stamping.
[0208] (83) In an embodiment, a surface of a microlens structure is
provided with a reflection structure, as shown in FIG. 23. The
reflection structure 504 is located on the microlens structure
501's surface far away from the graphic structure 503. Under an
action of the reflection structure 504, an enlarged image of the
graphic structure 503 can be observed at a side where the graphic
structure 503 is located. Specifically, each micro pattern in the
graphic structure 503 can be located near a corresponding focal
plane in the microlens structure 501, each micro pattern can image
via a corresponding microlens, and an enlarged image of a
corresponding micro pattern can be observed at a side where the
graphic structure 503 is located, such that in an practical
application, a side where a graphic structure is located can be fit
with an practical application product, and imaging of the graphic
structure is observed at a side where the graphic structure is
located, which can avoid the problem of affecting a user experience
effect caused by irregularities of a side where a microlens
structure is located, when imaging of the graphic structure is
observed at a side where a microlens structure is located, thus
facilitating to improve a user's experience feelings.
[0209] In an embodiment, a surface of a graphic structure can be
provided with a protection structure. The protection structure is
used for protecting a graphic structure, so as to prevent
deformation of a (micro) pattern in the graphic structure,
affecting an image effect.
[0210] (84) As can be seen from the above description, a polymer
film provided by the embodiments of the present application can be
a two-layer film structure, a microlens structure and an
accommodation structure are formed in different polymer layers,
there is an interface between the two-layer polymer layers, however
the polymer film has no substrate layer, which realizes the purpose
of reducing the thickness of the polymer film. In addition, the
polymer film has no substrate layer, thus its mechanical property
is poor, such that the polymer film can be cut off easily when hot
stamping.
[0211] The thickness of the polymer film in the embodiments of the
present application is thin, its thickness can reach less than
dozens of micrometers, even several micrometers, and it is cut off
easily. Therefore, this polymer film is easily transferred.
[0212] (85) Any numerical value referred in the present application
includes all the values of a lower value and an upper value
increasing by one unit between a lower limiting value and an upper
limiting value, there is an interval with at least two units
between any lower value and any higher value. For example, if
elaborating a value of a quantity or a process variable (such as
temperature, pressure, time, etc.) of a component is from 1 to 90,
preferably from 20 to 80, more preferably from 30 to 70, the
purpose is to explain the Description also clearly lists the values
such as 15 to 85, 22 to 68, 43 to 51 and 30 to 31, etc. For a value
less than 1, it is appropriately considered that one unit is
0.0001, 0.001, 0.01, 0.1. These are only examples to be clearly
expressed, it can be considered that all possible combinations of
the listed values between the lowest value and the highest value
are clearly elaborated in the present Description in similar
ways.
[0213] Unless otherwise stated, all the ranges include endpoints
and all the numbers among the endpoints. "About" or "approximate"
used together with a range are suitable for two endpoints of the
range. Thus, "about 20 to 30" aims to cover "about 20 to about 30",
at least including specified endpoints.
[0214] (86) For various purposes, all the disclosed articles and
reference materials, including patent applications and
publications, are hereby incorporated by reference. The term
"basically composed of . . . " for describing a combination should
include a determined element, an ingredient, a component or a step
and other elements, ingredient, components or steps which do not
substantially affect a basic novelty feature of the combination.
When using the term "contain" or "include" to describe a
combination of an element, an ingredient, a component or a step
here, it is also conceivable of an embodiment basically formed by
such element, an ingredient, a component or a step. The term
"may/can" is used to explain that any described property included
by "may/can" is optional.
[0215] A plurality of elements, ingredient, components or steps can
be provided by a single integrated element, an ingredient, a
component or a step. Alternatively, a single integrated element, an
ingredient, a component or a step can be divided into a plurality
of separated elements, ingredient, components or steps. "A" or
"one" for describing an element, an ingredient, a component or a
step is not for excluding other elements, ingredient, components or
steps.
[0216] It should be understood that the above description is for
graphic illustration, not for limiting. By reading the above
description, many embodiments and many applications besides the
provided examples are obvious for persons skilled in the art.
Therefore, the scope of the present teaching should not be
determined according to the above description, but should be
determined according to the attached claims and all the scopes of
equivalents owned by these claims. For all purposes, the
disclosures of all articles and references, including patent
applications and announcements, are incorporated herein by
reference. The omission of the subject matter in any aspect
disclosed herein in the preceding claims is not intended to
disclaim the subject matter, nor should it be considered that the
inventor does not consider the subject matter as a portion of the
disclosed subject matter of the invention.
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