U.S. patent application number 16/038194 was filed with the patent office on 2019-11-14 for display panel and electronic device comprising thereof.
This patent application is currently assigned to Au Optronics Corporation. The applicant listed for this patent is Au Optronics Corporation. Invention is credited to Chia-Tien Chou, Yu-Chin Wu.
Application Number | 20190348480 16/038194 |
Document ID | / |
Family ID | 64482673 |
Filed Date | 2019-11-14 |
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United States Patent
Application |
20190348480 |
Kind Code |
A1 |
Wu; Yu-Chin ; et
al. |
November 14, 2019 |
DISPLAY PANEL AND ELECTRONIC DEVICE COMPRISING THEREOF
Abstract
A display panel comprising a first substrate, a second
substrate, a color conversion layer, and an image sensing layer. A
plurality of display units are between the first substrate and the
second substrate. At least one of the plurality of display units
has at least three sub-pixels. Each of the sub-pixels at least has
one display region and a light shielding region disposed on at
least one side of the display region. The color conversion layer is
disposed in the display unit. Each of the color conversion elements
is disposed in at least one portion of the light shielding region
of each of the sub-pixels. The image sensing layer is disposed on
the display unit and at least partially overlaps the color
conversion layer. Each of the image sensing elements is disposed in
at least one portion of the light shielding region of each of the
sub-pixels to serve as an image sensing region.
Inventors: |
Wu; Yu-Chin; (Hsinchu,
TW) ; Chou; Chia-Tien; (Hsinchu, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Au Optronics Corporation |
Hsinchu |
|
TW |
|
|
Assignee: |
Au Optronics Corporation
Hsinchu
TW
|
Family ID: |
64482673 |
Appl. No.: |
16/038194 |
Filed: |
July 18, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L 27/3246 20130101;
H01L 33/62 20130101; H01L 27/3276 20130101; H01L 27/323 20130101;
H01L 27/3262 20130101; H01L 31/022466 20130101; H01L 27/156
20130101; H01L 27/3244 20130101; H01L 33/58 20130101; H01L 33/505
20130101; H01L 27/3234 20130101; H01L 27/3272 20130101; H01L
27/3211 20130101; H01L 27/322 20130101 |
International
Class: |
H01L 27/32 20060101
H01L027/32; H01L 31/0224 20060101 H01L031/0224; H01L 27/15 20060101
H01L027/15; H01L 33/58 20060101 H01L033/58; H01L 33/62 20060101
H01L033/62; H01L 33/50 20060101 H01L033/50 |
Foreign Application Data
Date |
Code |
Application Number |
May 9, 2018 |
TW |
107115689 |
Claims
1. A display panel, comprising: a first substrate; and a second
substrate, corresponding to the first substrate, wherein a
plurality of display units are provided between the first substrate
and the second substrate, at least one of the display units
respectively comprises three sub-pixels configured to display
different colors respectively, the sub-pixels respectively have at
least one switch element electrically connected to a signal line,
wherein the sub-pixels respectively at least have a display region
and a light shielding region disposed on at least one side of the
display region, and at least one display element is disposed in the
display region; a color conversion layer, disposed on the display
units, wherein the color conversion layer comprises three color
conversion elements respectively corresponding to the sub-pixels,
and the color conversion elements respectively convert a light into
different colors, wherein each of the color conversion elements is
disposed in at least one portion of the light shielding region of
each of the sub-pixels; and an image sensing layer, disposed on the
display units and at least partially overlapping the color
conversion layer, wherein the image sensing layer comprises three
image sensing elements respectively corresponding to the
sub-pixels, and each of the image sensing elements is electrically
connected to a reading line through at least one reading element,
wherein each of the image sensing elements is disposed in at least
one portion of the light shielding region of each of the sub-pixels
to serve as an image sensing region.
2. The display panel according to claim 1, further comprising a
dielectric layer, wherein an outer surface of the first substrate
serves as a viewing surface, the sub-pixels, the color conversion
layer, the image sensing layer and the dielectric layer are
disposed on an inner surface of the first substrate, wherein the
dielectric layer covers the image sensing element, a portion of the
first substrate and a portion of the color conversion layer, the
dielectric layer is disposed between the color conversion layer and
the switch elements and between the first substrate and the switch
elements.
3. The display panel according to claim 2, wherein each of the
image sensing elements comprises a first electrode, a second
electrode corresponding to the first electrode and a photoelectric
conversion layer disposed between the first electrode and the
second electrode, wherein the first electrode is closer to the
first substrate than the second electrode is.
4. The display panel according to claim 3, wherein the first
electrode of each of the image sensing elements has a transparency
greater than the second electrode, and the second electrode serves
as a light shielding element.
5. The display panel according to claim 1, further comprising a
dielectric layer, wherein an outer surface of the second substrate
serves as a viewing surface, the sub-pixels are disposed on an
inner surface of the first substrate, and the color conversion
layer, the image sensing layer and the dielectric layer are
disposed on an inner surface of the second substrate, wherein the
dielectric layer covers the image sensing elements and a portion of
the second substrate.
6. The display panel according to claim 5, wherein each of the
image sensing elements comprises a first electrode, a second
electrode corresponding to the first electrode and a photoelectric
conversion layer disposed between the first electrode and the
second electrode, wherein the first electrode is closer to the
second substrate than the second electrode is.
7. The display panel according to claim 6, wherein the first
electrode of each of the image sensing elements has a transparency
greater than the second electrode, and the second electrode serves
as a light shielding element.
8. The display panel according to claim 1, wherein each of the
color conversion elements comprises at least two layers, and
refractive indexes of the layers are different.
9. The display panel according to claim 1, wherein each of the
color conversion elements comprises a plurality of first wire grids
substantially parallel with each other, and any two adjacent first
wire grids has a gap therebetween.
10. The display panel according to claim 9, wherein the first wire
grids of the color conversion elements have various cycles.
11. The display panel according to claim 9, wherein the color
conversion elements have three sets of the first wire grids
respectively corresponding to the image sensing elements of the
sub-pixels, the three sets of wire grids respectively have a cycle,
and the cycles are different from each other.
12. The display panel according to claim 9, further comprising a
plurality of second wire grids respectively corresponding to the
display region of each of the sub-pixels, a cycle of the first wire
grids corresponding to each of the sub-pixels is larger than a
cycle of the second wire grids, and the second wire grids serve as
a polarizer.
13. The display panel according to claim 1, wherein each of the
sub-pixels further has a display electrode disposed in the display
region, and the display element is disposed on the display
electrode.
14. The display panel according to claim 1, wherein each of the
sub-pixels further has a display defining pattern, the display
defining pattern has at least one opening, and the display element
is disposed in the opening.
15. The display panel according to claim 1, further comprising a
touch element, the touch element overlapping at least a portion of
the display units.
16. An electronic device, comprising the display panel according to
claim 1.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the priority benefit of Taiwan
application serial no. 107115689, filed on May 9, 2018. The
entirety of the above-mentioned patent application is hereby
incorporated by reference herein and made a part of this
specification.
BACKGROUND
Field of the Disclosure
[0002] The disclosure is related to a semiconductor device, and
particularly to a display panel and an electronic device comprising
thereof
Description of Related Art
[0003] With the advantages of being compact, small and
power-saving, display panel has been commonly applied in various
electronic products such as smart phone, notebook computer, tablet
PC and TV. Typically, electronic products having high
"screen-to-body ratio" provide user with larger field of view and
greater sense of immersion. Take smart phone as an example,
"screen-to-body ratio" generally refers to a ratio of the area of a
pixel region of displayable image of a display screen to an
orthogonal projection area are of the body of smart phone. In view
of the above, it is an important issue to find out how to increase
screen-to-body ratio.
SUMMARY OF THE DISCLOSURE
[0004] The disclosure provides a display panel embedded with an
image sensing element and an electronic device including the
display panel. A valid display region of the display panel may be
less affected and may even be improved, and the image sensing
capability of the display panel may be less affected and may even
be enhanced. The display panel embedded with image sensing element,
the weight of the display panel may be lighter and/or the thickness
thereof may be thinner. The electronic device includes the display
panel and thus having high screen-to-body ratio and/or image
sensing capability, and the weight of the electronic device may be
lighter and/or the thickness thereof may be thinner.
[0005] A display panel of the disclosure includes a first
substrate, a second substrate, a color conversion layer and an
image sensing layer. The second substrate and the first substrate
correspond to each other. A plurality of display units are provided
between the first substrate and the second substrate. At least one
of the plurality of display units has at least three sub-pixels,
and each of the sub-pixels displays different colors. Each of the
sub-pixels has at least one switch element. The switch element and
a signal line are electrically connected. Each of the sub-pixels at
least has one display region and a light-shielding region disposed
on at least one side of the display region. The display region at
least has one display element. The color conversion layer is
disposed in the display unit. The color conversion layer has at
least three color conversion elements. The color conversion
elements respectively correspond to the sub-pixels, and convert
into different colors. Each of the color conversion elements is
disposed in at least one portion of the light shielding region of
each of the sub-pixels. The image sensing layer is disposed on the
display unit and at least partially overlaps the color conversion
layer. The image sensing layer has at least three image sensing
elements. The image sensing elements respectively correspond to the
sub-pixels. Each of the image sensing elements is electrically
connected to a reading line through at least one reading element.
Each of the image sensing elements is disposed in at least one
portion of the light shielding region of each of the sub-pixels to
serve as an image sensing region.
[0006] In order to make the aforementioned features and advantages
of the disclosure more comprehensible, embodiments accompanying
figures are described in detail below.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 is a top view of a display panel according to an
embodiment of the disclosure.
[0008] FIG. 2 is a top view of a sub-pixel of a display panel
according to an embodiment of the disclosure.
[0009] FIG. 3 is a schematic cross-sectional view of a sub-pixel in
an embodiment of a display panel in a first embodiment of FIG. 2
taken along line A-A'.
[0010] FIG. 4 is a schematic cross-sectional view of a sub-pixel in
an embodiment of the display panel in the first embodiment of FIG.
2 taken along line B-B'.
[0011] FIG. 5 is a top view of a sub-pixel of a display panel
according to another embodiment of the disclosure.
[0012] FIG. 6 is a schematic cross-sectional view of a sub-pixel in
another embodiment of the display panel in the first embodiment of
FIG. 2 taken along line B-B'.
[0013] FIG. 7 is a schematic cross-sectional view of a sub-pixel in
yet another embodiment of the display panel in the first embodiment
of FIG. 2 taken along line B-B'.
[0014] FIG. 8 is a schematic cross-sectional view of a sub-pixel in
one embodiment of a display panel in a second embodiment of FIG. 2
taken along line A-A'.
[0015] FIG. 9 is a schematic cross-sectional view of a sub-pixel in
one embodiment of the display panel in the second embodiment of
FIG. 2 taken along line B-B'.
[0016] FIG. 10 is a schematic cross-sectional view of a sub-pixel
in another embodiment of the display panel in the second embodiment
of FIG. 2 taken along line B-B'.
[0017] FIG. 11 is a schematic cross-sectional view of a sub-pixel
in yet another embodiment of the display panel in the second
embodiment of FIG. 2 taken along line B-B'.
[0018] FIG. 12 is a schematic cross-sectional view of a display
panel integrated with a touch element according to an embodiment of
the disclosure.
[0019] FIG. 13 is a schematic top view of an electronic device
including a display panel according to an embodiment of the
disclosure.
DESCRIPTION OF EMBODIMENTS
[0020] In the drawings, the thickness of layers, films, panels,
regions, etc., are exaggerated for clarity. Like reference numerals
designate like elements throughout the specification. It will be
understood that when an element such as a layer, film, region, or
substrate is referred to as being "on" or "connected to" another
element, it can be directly on or connected to the other element or
intervening elements may also be present. In contrast, when an
element is referred to as being "directly on" or "directly
connected to" another element, there are no intervening elements
present. As used herein, "connected" may refer to a physical and/or
electrical connection. Furthermore, "electrically connected" or
"coupled" may be other elements between two elements.
[0021] The term "about," "roughly," "approximately" or
"substantially" as used herein is inclusive of the stated value and
means within an acceptable range of deviation for the particular
value as determined by persons of ordinary skill in the art,
considering the measurement in question and the error associated
with measurement of the particular quantity (i.e., the limitations
of the measurement system). For example, "about" may mean within
one or more standard deviations, or within .+-.30%, .+-.20%,
.+-.10%, .+-.5% of the stated value. Moreover, a relatively
acceptable range of deviation or standard deviation may be chosen
for the term "about," "approximately" or "substantially" as used
herein based on optical properties, etching properties or other
properties, instead of applying one standard deviation across all
the properties.
[0022] Unless otherwise defined, all terms (including technical and
scientific terms) used herein have the same meaning as commonly
understood by persons of ordinary skill in the art. It will be
further understood that terms, such as those defined in commonly
used dictionaries, should be interpreted as having a meaning that
is consistent with their meaning in the context of the relevant art
and the invention and will not be interpreted in an idealized or
overly formal sense unless expressly so defined herein.
[0023] The schematic views are only meant to illustrate some
embodiments of the disclosure. Thus, the shape, number and
proportional size of each of the elements illustrated in the
schematic views should not be considered limitations on the
disclosure. For instance, the actual number, size and shape of
components such as sub-pixels in FIG. 1 are only illustrated for
the purpose of exemplification, and it is not necessary that the
actual number, size and shape of the components such as sub-pixels
of the disclosure must be shown as in the drawings.
[0024] FIG. 1 is a top view of a display panel according to an
embodiment of the disclosure. Referring to FIG. 1, in the
embodiment, a display panel 10 includes, for example, a plurality
of display units AU. In an embodiment, a region of the display
panel 10 where the plurality of display units AU are disposed may
be referred to as a display pixel region. At least one of the
plurality of display units AU, for example, has three sub-pixels
PX. The sub-pixels PX each may display different colors. In an
embodiment, the different colors displayed by the sub-pixels PX are
three primary colors such as red color, green color and blue color,
but the disclosure is not limited thereto. In other embodiments, at
least one of the plurality of display units AU may have four, five
or six sub-pixels PX and so on depending on the design, and three
sub-pixels PX may display different colors which are three primary
colors. Other sub-pixels of the sub-pixels PX may display white
color, yellow color, at least one of the three primary colors, or
other suitable color.
[0025] FIG. 2 is a top view of a sub-pixel of a display panel
according to an embodiment of the disclosure. Referring to FIG. 2,
the range of a single sub-pixel PX of the display panel 10 in the
embodiment is, for example, defined by a reading line R and a
selecting line S, which should not be construed as a limitation to
the disclosure. The single sub-pixel PX may be provided with a
plurality of signal lines (not shown). The signal line may be, for
example, at least one of the at least one scan line (not shown), at
least one data line (not shown), at least one common electrode line
(not shown), at least one power supply line (not shown) or other
suitable line. In other embodiments, the range of the single
sub-pixel PX may be defined by two adjacent signal lines having the
same function (e.g., two data lines or two high-level power supply
lines, the disclosure is not limited thereto) and other two
adjacent signal lines having the same function (e.g., two scan
lines, two common electrode lines or two low-level power supply
lines, the disclosure is not limited thereto) configured in an
interlaced manner (vertically, for example), but the disclosure is
not limited thereto. In other embodiments, the range of the single
sub-pixel PX is defined by, for example, two adjacent signal lines
having the same function (e.g., two data lines or two high-level
power supply lines, the disclosure is not limited thereto) and two
adjacent signal lines having different functions (e.g., one scan
line and one common electrode line or one scan line and one
low-level power supply line, the disclosure is not limited thereto)
configured in an interlaced manner (vertically, for example). In
other embodiments, the range of the single sub-pixel PX may be
defined by two adjacent signal lines having different functions
(e.g., one data line and one high-level power supply line, the
disclosure is not limited thereto) and two adjacent signal lines
having the same function (e.g., two scan lines, two common
electrode lines, or two low-level power supply lines, the
disclosure is not limited thereto) configured in an interlaced
manner (vertically, for example). In other embodiments, the range
of the single sub-pixel PX may be defined by two adjacent signal
lines having different functions (e.g., one data line and one
high-level power supply line, the disclosure is not limited
thereto) and other two adjacent signal lines having different
functions (e.g., one scan line and one common electrode line or one
scan line and one low-level power supply line, the disclosure is
not limited thereto) configured in an interlaced manner
(vertically, for example).
[0026] Further referring to FIG. 2, the single sub-pixel PX, for
example, has a light shielding region NR and a display region AR.
Since the light shielding region NR of the single sub-pixel PX is a
region that does not display the frame (or namely the image) and
thus may be referred to as a non-display region. In an embodiment,
the light shielding region NR is disposed on at least one side of
the display region AR or surrounds the display region AR. In the
embodiment, the light shielding region NR, for example, surrounds
the display region AR, but the disclosure is not limited
thereto.
[0027] FIG. 3 is a schematic cross-sectional view of a sub-pixel in
an embodiment of a display panel in a first embodiment of FIG. 2
taken along line A-A'. FIG. 4 is a schematic cross-sectional view
of a sub-pixel in an embodiment of the display panel in the first
embodiment of FIG. 2 taken along line B-B'. Referring to FIG. 2,
FIG. 3 and FIG. 4, the display panel 10 in the embodiment may
include a first substrate 100, a second substrate 200, a color
conversion layer 300 and an image sensing layer 400.
[0028] The first substrate 100 and the second substrate 200 are
disposed correspondingly. The first substrate 100 and the second
substrate 200 may include a rigid substrate or a flexible
substrate, and the material thereof is, for example, a glass
substrate, a plastic substrate, or other suitable material, or a
combination thereof The plurality of display units AU are, for
example, disposed between the first substrate 100 and the second
substrate 200. In the embodiment, an outer surface 100a of the
first substrate 100 may serve as a viewing surface as shown in FIG.
4, for example. From another perspective, the display surface of
the display panel 10 may be the outer surface 100a of the first
substrate 100, which may provide a display image for user to
watch.
[0029] The color conversion layer 300 is disposed on the display
units AU. From another perspective, the color conversion layer 300
and the display units AU are partially overlapped. The color
conversion layer 300 may have at least three color conversion
elements such as color conversion elements 300r, 300g and 300b, and
each of the color conversion elements 300r, 300g and 300b may
respectively convert into different colors and correspond to the
sub-pixels PX (e.g., sub-pixels of different colors). From another
perspective, each of the color conversion elements 300r, 300g and
300b may be, for example, disposed in at least one portion of the
light shielding region NR of each of the sub-pixels PX. In an
embodiment, the different colors converted by the color conversion
elements 300r, 300g and 300b may be, for example, three primary
colors such as red color, green color and blue color, but the
discourse is not limited thereto. In an embodiment, the material of
the color conversion elements 300r, 300g and 300b may be an organic
material or an inorganic material, and may be a structure having
single layer or at least two layers. That is, the color conversion
elements 300r, 300g and 300b may be, for example, a single layer or
at least two layers respectively. When the color conversion
elements 300r, 300g and 300b are at least two layers, the
refractive index of the layers may be different from each other,
such that the light is refracted into different colors such as red
color, blue color or green color, but the disclosure is not limited
thereto. Preferably, the material of the color conversion elements
is, for example, an inorganic material, but the disclosure is not
limited thereto. In some embodiments, the material of the color
conversion elements may be an insulating material, a metal material
or a metal material and an insulating material or other suitable
material. In other embodiments, the color conversion elements 300r,
300g and 300b may include color resist, quantum dot (rod) or other
suitable color conversion material, or a combination or a stack of
at least two of the above materials. The color conversion elements
300r, 300g and 300b of the color conversion layer 300 may also be
referred to as a wavelength conversion element of a wavelength
conversion layer.
[0030] The image sensing layer 400 is disposed on the display unit
AU and at least partially overlaps the color conversion layer 300.
From another perspective, the image sensing layer 400 may be, for
example, disposed in at least one portion of the light shielding
region NR of the sub-pixel PX to serve as an image sensing region
NR-1. In the embodiment, the light shielding region NR surrounding
two sides of the display region AR may be the image sensing region
NR-1 as shown in FIG. 2, for example, but the disclosure is not
limited thereto. In other embodiments, the light shielding region
NR surrounding three sides or four sides of the display region AR
may be the image sensing region NR-1, and the elements (e.g.,
corresponding color conversion elements 300r, 300g, 300b and
corresponding image sensing elements 400r, 400g and 400b described
below) corresponding to the image sensing region NR-1 may be
disposed here. The image sensing layer 400 has at least three image
sensing elements, for example, the image sensing elements 400r,
400g and 400b may respectively correspond to different color
conversion elements 300r, 300g and 300b to sense a corresponding
color. For example, the image sensing element 400r (e.g., red color
image sensing element 400r) of a first color corresponds to and
senses the first color conversion element 300r (e.g., red color
conversion element 300r); the image sensing element 400 (e.g.,
green color image sensing element 400g) of a second color
corresponds to and senses the second color conversion element 300g
(e.g., green color conversion element 300g); the image sensing
element 400b (e.g., blue color image sensing element 400b) of a
third color corresponds to and senses the third color conversion
element 300b (e.g., blue color conversion element 300b), but the
disclosure is not limited thereto. Additionally, the image sensing
elements 400r, 400g and 400b may be electrically connected to a
corresponding reading circuit RC, respectively. Preferably, the
reading circuit RC includes at least one reading element READ and a
reading line R, thereby reading the signal converted by one of the
corresponding image sensing elements 400r, 400g and 400b more
accurately, but the disclosure is not limited thereto. In other
embodiment, the reading circuit RC may be only include the reading
line R, but the disclosure is not limited thereto. The reading
element READ may be disposed on the first substrate 100 and
electrically connected to the reading line R. Preferably, the
reading element READ may be further selectively electrically
connected to the selecting line S, thereby reading the signal
converted by the corresponding image sensing element (e.g., one of
the image sensing elements 400r, 400g, 400b) more accurately, but
the disclosure is not limited thereto. In the embodiment,
preferably the image sensing region NR-1 is provided with the
reading element READ. In some embodiments, the reading element READ
may be disposed in the display region AR or a portion of the image
sensing region NR-1 and a portion of the display region AR.
[0031] The reading element READ may be, for example, a thin film
transistor element which includes a gate electrode, a gate
insulating layer, a semiconductor channel layer, a source electrode
and a drain electrode. For example, the reading element READ may be
a bottom gate thin film transistor element; for example, the gate
electrode is located under the semiconductor channel layer, but the
disclosure is not limited thereto. The reading element READ may
also be a top gate thin film transistor element; for example, the
gate electrode is located above the semiconductor channel layer or
other type of switch element. The semiconductor channel layer may
be a single-layer structure or a multi-layer structure, and the
material thereof may be amorphous silicon, mono-crystalline,
nano-crystalline silicon, microcrystalline silicon, polysilicon,
organic semiconductor material, oxide semiconductor material,
nano-carbon tube/rod, perovskite, or other suitable material.
[0032] The image sensing elements 400r, 400g and 400b of the image
sensing layer 400, for example, each includes a sensing electrode
(e.g., first electrode 410), another sensing electrode (e.g.,
second electrode 420) and a photoelectric conversion layer 430. The
sensing electrode (e.g., first electrode 410) and another sensing
electrode (e.g., second electrode 420) correspond to each other,
and the photoelectric conversion layer 430 is disposed between the
sensing electrode (e.g., first electrode 410) and another sensing
electrode (e.g., second electrode 420). The photoelectric
conversion layer 430 may be configured to convert light (e.g.,
colored light) into a corresponding electrical signal. The
structure of the photoelectric layer 430 may be a single layer or
multiple layers, and the material thereof may include an organic
semiconductor material, an inorganic semiconductor material,
graphene, nano-carbon tube (rod), perovskite, or other suitable
material. In an embodiment, the photoelectric conversion layer 430
may be in the form of a stack of P-N semiconductor material, a
stack of P-I-N semiconductor material or other types of
semiconductor material stack. The structure of at least one of the
image sensing elements 400r, 400g and 400b may be a P-N diode, a
P-I-N diode, or other suitable structure. The material of one of
the first electrode 410 and the second electrode 420 may be, for
example, a transparent or a semi-transparent conductive material
such as zinc-oxide (ZnO), indium-tin-oxide (ITO), indium-zinc-oxide
(IZO), indium-gallium-zinc-oxygen (IGZO), indium-gallium-oxide
(IGO), zinc-gallium-oxide (ZGO), graphene, nano-carbon tube/rod,
metal or alloy smaller than 60A, or other suitable material; and
the material of other one of the first electrode 410 and the second
electrode 420 may be a reflective conductive material (or referred
to as a non-transparent conductive material), or a stack layer
selected from a reflective conductive material and a transparent
conductive material such as metal, alloy, nitride of metal
material, oxide of metal material, oxynitride of metal material or
other suitable material, or a stack layer of at least two of the
above materials, but the disclosure is not limited thereto.
[0033] Referring to FIG. 3 and FIG. 4, the display region AR of
each sub-pixels PX of the display panel 10 may be, for example,
provided with a display medium layer 120 (or referred to as display
element). For example, the display medium layer 120 may be disposed
between the first substrate 100 and the second substrate 200. In
the embodiment, the display medium layer 120 includes a non-self
illuminating material such as a liquid crystal molecule, an
electrophoretic display medium, or other applicable medium, but the
disclosure is not limited thereto. In other embodiments, the
display medium layer 120 may include a self-illuminating material
such as inorganic material, an organic material, or other suitable
material, or a combination thereof, or a combination of the above
and the non-self illuminating material. When the display medium
layer 120 is formed of a non-self illuminating material, the
display panel 10 may include other backlight source (not
shown).
[0034] To control the switch of the display medium layer 120, the
element in the display region AR may, for example, selectively
further include a display electrode 110, a plurality of signal
lines (not shown), a light shielding pattern (not shown) and a
switch element T, or other suitable element, or at least one of the
above elements. The signal line (not shown) may be, for example, at
least one of the at least one scan line (not shown), at least one
data line (not shown), at least one common electrode line (not
shown) and at least one power supply line (not shown).
[0035] When the element in the display region AR further
selectively includes the display electrode 110, the display
electrode 110 may be disposed between the first substrate 100 and
the second substrate 200. The display electrode 110 may be, for
example, a transmissive pixel electrode, a reflective pixel
electrode, or a transflective pixel electrode. The transmissive
pixel electrode may be a single-layer structure or a multi-layer
structure, and the material thereof includes indium-tin-oxide,
indium-zinc-oxide, aluminum-tin-oxide, aluminum-zinc-oxide,
indium-geinianium-zinc oxide, nano-carbon tube (rod), metal or
alloy smaller than 60A or other suitable material. The reflective
pixel electrode may be a single-layer structure or a multi-layer
structure, and the material thereof includes metal, alloy or other
suitable material.
[0036] When the element in the display region AR further
selectively includes a switch element T, the switch element T may
be disposed between the first substrate 100 and the second
substrate 200. The switch element T may be, for example,
electrically connected to the display electrode 110. The switch
element T may be, for example, a thin film transistor element which
includes a gate electrode, a gate insulating layer, a semiconductor
channel layer, a source electrode and a drain electrode. For
example, the switch element T may be a bottom gate thin film
transistor element; for example, the gate electrode is located
under the semiconductor channel layer, but the disclosure is not
limited thereto. The switch element T may be a top gate thin film
transistor element; for example, the gate electrode is located
above the semiconductor channel layer, or other type of switch
element. Specifically, the semiconductor channel layer may be a
single-layer structure or a multi-layer structure, and the material
thereof may be amorphous silicon, mono-crystalline,
nano-crystalline silicon, microcrystalline silicon, polysilicon,
organic semiconductor material, oxide semiconductor material,
nano-carbon tube/rod, perovskite or other suitable material.
[0037] Further referring to FIG. 3 and FIG. 4, the display panel 10
may be, for example, selectively provided with a dielectric layer
130. The dielectric layer 130, for example, may be disposed between
the first substrate 100 and the second substrate 200. From another
perspective, the dielectric layer 130 is disposed on the first
substrate 100. The dielectric layer 130 may cover a portion of the
first substrate 100, a portion of the color conversion layer 300
and a portion of the image sensing layer 400. For example, the
dielectric layer 130 is disposed on the first substrate 100, and
the dielectric layer 130 may be disposed between the color
conversion layer 300 and the switch element T as well as the first
substrate 100 and the switch element T, but the disclosure is not
limited thereto. In some embodiments, the dielectric layer 130
covers a portion of the first substrate 100, a portion of the color
conversion layer 300, a portion of the image sensing layer 400, the
reading element READ and the element connected thereto (e.g.,
reading line R and/or selecting line S). The material of the
dielectric layer 130 may be, for example, an inorganic insulating
material, an organic insulating material, or a stack of a
combination thereof. The inorganic insulating material may be, for
example, silicon oxide, silicon nitride, silicon oxynitride, other
suitable material or a stack of the above materials. The organic
insulating material may be acrylic, photoresist, epoxy resin, other
suitable material, or a stack of the above materials.
[0038] Further referring to FIG. 3 and FIG. 4, the display panel 10
may be, for example, selectively provided with a protection layer
140. The protection layer 140 is, for example, disposed between the
first substrate 100 and the second substrate 200. From another
perspective, the protection layer 140 is disposed on the first
substrate 100. The protection layer 140 may cover the switch
element T, and the display electrode 110 is disposed on the
protection layer 140, but the disclosure is not limited thereto.
The material of the protection layer 140 may be, for example, an
inorganic insulating material, an organic insulating material, or a
stack of the combination thereof. The inorganic insulating material
may be, for example, silicon oxide, silicon nitride, silicon
oxynitride, other suitable material or a stack of the above
materials. The organic insulating material may be acrylic,
photoresist, epoxy resin, other suitable material or a stack of the
above materials. The protection layer 140 may be, for example,
selectively provided with a contact hole 142, and the display
electrode 110 may be electrically connected to the switch element T
through the contact hole 142, but the disclosure is not limited
thereto. In other embodiments, the switch element T may be
electrically connected to the display electrode 110 without the
contact hole 142 of the protection layer 140.
[0039] In the embodiment, no matter whether the display panel 10 is
a non-self illuminating display panel (e.g., the display panel 10
has display medium layer 120 foimed of non-self illuminating
material) or a self-illuminating display panel (e.g., the display
medium layer 122 of the display panel 10 having self-illuminating
material to be introduced below), the color conversion layer 300
not only can be disposed in the light shielding region NR of each
of the sub-pixels PX, but also can be disposed in the display
region AR of each of the sub-pixels PX. In the embodiment, the
display panel 10 may further selectively include an additional
color conversion layer (or referred to as additional wavelength
conversion layer, not shown). In the embodiment, if the display
panel 10 is the non-self illuminating display panel (e.g., the
display panel 10 has the display medium layer 120 formed of
non-self illuminating material), the additional color conversion
layer (not shown) may be disposed on the second substrate 200, may
serve as one of the dielectric layer 130 or the protection layer
140, may be disposed in the dielectric layer 130, or may be
disposed in the protection layer 140, and the additional color
conversion layer (not shown) may be further selectively disposed in
the display region AR of each of the sub-pixels PX; other backlight
source (not shown) mentioned above may be disposed on the outer
side of the second substrate 200 instead of being located on the
outer surface 100a of the first substrate 100 and between the first
substrate 100 and the second substrate 200. In the embodiment, if
the display panel 10 is a self-illuminating display panel (e.g.,
the display medium layer 122 of the display panel 10 having
self-illuminating material to be introduced below), the additional
color conversion layer (not shown) may be disposed on the second
substrate 200, may serve as one of the dielectric layer 130 or the
protection layer 140, may be disposed in the dielectric layer 130,
or may be disposed in the protection layer 140, and the additional
color conversion layer (not shown) may be further selectively
disposed in the display region AR of each of the sub-pixels PX.
[0040] In the embodiment, the outer surface 100a of the first
substrate 100 may serve as a viewing surface. From another
perspective, the display surface of the display panel 10 may serve
as the outer surface 100a of the first substrate 100, which may
provide a display image for user to watch. Furthermore, the
sub-pixels PX, the color conversion layer 300, the image sensing
layer 400 and the dielectric layer 130 are disposed on the first
substrate 100. In an embodiment, the electrode of the image sensing
layer 400 closer to the first substrate 100 (e.g., one of the first
electrode 410 or the second electrode 420) includes a transparent
or a semi-transparent conductive material, e.g., the material
described in the above-mentioned embodiment. Another electrode of
the image sensing layer 400 farther from the first substrate 100
(e.g., the other one of the first electrode 410 or the second
electrode 420) is preferably selected from a reflective conductive
material (or refelTed to as non-transparent conductive material) or
a stack layer of the reflective conductive material and the
transparent conductive material, e.g., the material described in
the above-mentioned embodiment. Based on the above, the light
received by the image sensing element (e.g., one of image sensing
elements 400r, 400g, 400b) of each of the sub-pixels PX may not be
blocked by other shielding elements (e.g., reading element READ and
element (e.g., reading line R and/or selecting line S) connected
thereto, the switch element T and element (e.g., signal line, or
other shielding element) connected thereto), thereby making it
possible for the image sensing element (e.g., one of image sensing
elements 400r, 400g, 400b) of each of the sub-pixels PX to receive
more light and thus increasing the image sensing capability of the
image sensing element (e.g., one of image sensing elements 400r,
400g and 400b) of each of the sub-pixels PX. In the embodiment, it
is exemplified that the electrode (e.g., first electrode 410) of
the image sensing layer 400 is closer to the first substrate 100
than another electrode (e.g., second electrode 420) is. Therefore,
the transparency of the first electrode 410 including the
transparent or semi-transparent conductive material is greater than
the transparency of the second electrode 420 including
non-transparent conductive material, and the second electrode 420
may serve as a light shielding element, but the disclosure is not
limited thereto. From another perspective, the image sensing layer
400 may also be referred to as a light shielding element layer.
When another electrode (e.g., second electrode 420) serves as the
light shielding element, one of the following effects may be
achieved, e.g.,: blocking the ambient light from passing through
the color conversion element (e.g., one of color conversion
elements 300r, 300g and 300b) of each of the sub-pixels PX and the
image sensing element (e.g., one of image sensing elements 400r,
400g and 400b), thereby reducing light mixture possibly generated
between different sub-pixels PX, blocking the ambient light from
passing through the color conversion element (e.g., one of color
conversion elements 300r, 300g and 300b) of each of the sub-pixels
PX and the image sensing element (e.g., one of image sensing
elements 400r, 400g and 400b), thereby reducing photo-leakage
current caused by converted color light which might enter the
switch element T, or providing other suitable shielding effect.
[0041] Based on the above-mentioned embodiment, since each of the
sub-pixels PX of the display panel 10 has the light shielding
region NR and the display region AR, and at least a portion of the
light shielding region NR of each of the sub-pixels PX may serve as
the image sensing region NR-1 (including related element such as
one of color conversion elements 300r, 300g, 300b, one of image
sensing elements 400r, 400g, 400b, or other suitable elements) for
sensing image, the usable area of the display region AR of each of
the sub-pixels PX of the display panel 10 may be significantly
increased, such that there is no need to adapt to other electronic
elements (not shown) and sacrifice the usable area of the display
region AR of each of the sub-pixels PX. Furthermore, based on the
descriptions of the drawings in the embodiments (e.g.,
cross-sectional views in FIG. 3 and FIG. 4), since the image
sensing element (e.g., image sensing elements 400r, 400g and 400b)
disposed in the image sensing region NR-1 of the display panel 10
may serve as a camera with function (e.g., for the function of
video, selfie, picture and/or text scanning, 3D recognition
unlocking, or other functions applicable for the camera), the
usable area (e.g., usable area of first substrate 100) of the
display panel 10 may be significantly increased, such that there is
no need to adapt to other electronic elements (not shown) and
sacrifice the usable area (e.g., usable area of first substrate
100) and/or the image sensing resolution of the display panel 10
may be enhanced. Additionally, the display panel 10 is embedded
with the image sensing element (e.g., image sensing elements 400r,
400g, 400b), such that the display panel 10 has lighter weight
and/or thinner thickness.
[0042] FIG. 5 is a top view of a sub-pixel of a display panel
according to another embodiment of the disclosure. It should be
indicated that, the embodiment of FIG. 5 adopts the reference
numeral and partial content of the embodiment of FIG. 2, wherein
the same or similar reference numerals represent the same or
similar elements, and the same technical content is omitted. The
omitted descriptions can be derived from the embodiments and
effects described above and thus no repetition is incorporated
hereinafter.
[0043] Referring to FIG. 5, the single sub-pixel PX may have at
least two display regions AR. In the embodiment shown in FIG. 5,
the single sub-pixel PX has two display regions AR1, AR2, and the
light shielding region NR is, for example, disposed in the
periphery of the display regions AR1 and AR2 in the shape of letter
"H", for example, but the disclosure is not limited thereto.
Preferably, the two display regions AR1, AR2 may display colors
that are substantially the same, but the disclosure is not limited
thereto. Specifically, at least a portion of the light shielding
region NR may serve as the image sensing region NR-1 in the
presence of the color conversion element (e.g., one of color
conversion elements 300r, 300g, 300b) and the image sensing element
(e.g., one of image sensing elements 400r, 400g, 400b). For
example, the projection shape of the image sensing region NR-1 is
substantially the same as the projection shape of the light
shielding region NR, or the projection shape of the image sensing
region NR-1 is not equal to the projection shape of the light
shielding region NR. As shown in the embodiment, the usable area of
the display region AR of each of the sub-pixels PX may be
significantly increased, and there is no need to adapt to other
electronic elements (not shown) to sacrifice the usable area of the
display region AR of each of the sub-pixels PX. Furthermore, the
image sensing element (e.g., one of image sensing elements 400r,
400g, 400b) in the image sensing region NR-1 shown in the
embodiment may serve as a camera having function (e.g., for the
function of video, selfie, picture and/or text scanning, 3D
recognition unlocking, or other functions applicable for the
camera), and thus the usable area (e.g., usable area of first
substrate 100) of the display panel 10 may be significantly
increased, such that there is no need to adapt to other electronic
elements (not shown) and sacrifice the usable area (e.g., usable
area of first substrate 100) and/or the image sensing resolution of
the display panel 10 may be enhanced. Additionally, the display
panel 10 is embedded with the image sensing element (e.g., image
sensing elements 400r, 400g, 400b), such that the display panel 10
has lighter weight and/or thinner thickness.
[0044] FIG. 6 is a schematic cross-sectional view of a sub-pixel in
another embodiment of the display panel in the first embodiment of
FIG. 2 taken along line B-B'. It should be indicated that the
embodiment of FIG. 6 adopts the reference numeral and partial
content of the embodiment of FIG. 4, wherein the same or similar
reference numeral represents the same or similar element, and the
same technical content is omitted. The omitted descriptions can be
derived from the embodiments and effects described above and thus
no repetition is incorporated hereinafter.
[0045] Referring to FIG. 6, in the embodiment shown in FIG. 6, the
color conversion element 300r, 300g and 300b may be a plurality of
wire grids substantially parallel with each other and may be a
single-layer structure or a multi-layer structure, and the material
thereof may be metal, alloy, the inorganic material described
above, the original material described above, or other suitable
material. When the color conversion elements 300r, 300g and 300b
are a plurality of wire grids substantially parallel with each
other, a portion of the color conversion elements 300r, 300g, 300g
corresponding to each of the sub-pixels PX may convert the light
into different light colors such as red color, blue color or green
color, such that the image sensing elements 400r, 400g and 400b
corresponding to the color conversion elements 300r, 300g and 300b
in at least a portion of the non-display region NR can respectively
sense the corresponding color. The descriptions regarding the
corresponding image sensing elements 400r, 400g and 400b can be
derived from the above-mentioned embodiments. From another
perspective, the color conversion elements 300r, 300g and 300b may
be a plurality of wire grids substantially parallel with each other
respectively, along with which the at least one portion of the
non-display region NR in which the corresponding image sensing
elements 400r, 400g and 400b are disposed may be referred to as
image sensing region NR-1. Additionally, in some embodiments, a
portion of the display region AR of each of the sub-pixels PX of
the display panel 10 may be further selectively provided with color
conversion elements 300r, 300g and 300b, and the plurality of wire
grids that are substantially parallel with each other belonging to
the color conversion elements 300r, 300g and 300b corresponding to
a portion of the display region AR of each of the sub-pixels PX may
also serve as a polarizer in the display region AR of each of the
sub-pixels PX, thereby replacing typical polarizer (sheet) adhered
to the outer surface 100a of the first substrate 100. With the
design of the wire grid, the light may maintain to be collimated
after passing through the wire grid. When the color conversion
elements 300r, 300g and 300b are the wire grids respectively and
correspond to the image sensing elements 400r, 400g and 400b
respectively, the wire grids of the color conversion elements 300r,
300g and 300b may be referred to as a plurality of first wire
grids. When the wire grids correspond to the display region AR of
each of the sub-pixels PX, the wire grids may be referred to as a
plurality of second wire grids. In an embodiment, the polarization
cycle (or referred to as cycle or namely period) of the color
conversion elements 300r, 300g and 300b corresponding to the image
sensing region NR-1 may be larger than the polarization cycle of
the color conversion elements 300r, 300g and 300b corresponding to
the display region AR. The cycle of the color conversion elements
300r, 300g and 300b may be defined as that the width of one wire
grid pluses the width of a gap between two adjacent wire grids in
one of the color conversion elements 300r, 300g and 300b, or a sum
of half width of each of the two adjacent wire grids pluses the
width of gap between the two adjacent wire grids in one of the
color conversion elements 300r, 300g and 300b. The width of the one
wire grid in the at least one of the color conversion elements
300r, 300g and 300b corresponding to the image sensing region NR-1
is, for example, about 200 nm to about 700 nm, and the width of the
gap between the two adjacent wire grids in the at least one of the
color conversion elements 300r, 300g and 300b corresponding to the
image sensing region NR-1 is, for example, about 122 nm to about
300 nm, but the disclosure is not limited thereto. The polarization
cycle of at least one of the color conversion elements 300r, 300g
and 300b corresponding to the display region AR is, for example,
smaller than or substantially equal to 200 nm, and preferably
smaller than or substantially equal to 120 nm, but the disclosure
is not limited thereto. In an embodiment, the width of the one wire
grid in the at least one of the color conversion elements 300r,
300g and 300b corresponding to the display region AR is, for
example, about 10 nm to about 200 nm, and preferably about 30 nm to
100 nm, but the disclosure is not limited thereto. The cycles of
the color conversion element 300r (e.g., red color conversion
element), the color conversion element 300g (e.g., green color
conversion element) and the color conversion element 300b (e.g.,
blue color conversion element) corresponding to different colors
may be different. In other words, the first wire grids have various
cycles. For example, the cycle of the color conversion element 300r
(e.g. red color conversion element) corresponding to the image
sensing region NR-1 of the first color (e.g., red image sensing
region) is larger than the cycle of the color conversion element
300g (e.g., green color conversion element) corresponding to the
image sensing region NR-1 of the second color (e.g., green image
sensing region) and the cycle of the color conversion element 300b
(e.g., blue color conversion element) corresponding to the image
sensing region NR-1 of the third color (e.g., blue color image
region), and the cycle of the color conversion element 300g (e.g.,
green color conversion element) corresponding to the image sensing
region NR-1 of the second color (e.g., green image sensing region)
is larger than the cycle of the color conversion element 300b
(e.g., blue color conversion element) corresponding to the image
sensing region NR-1 of the third color (e.g., blue image sensing
region). In other words, the first wire grids of the first color
conversion elements 300r (e.g., red color conversion element) may
be referred to as a first set of wire grids, the first wire grids
of the second color conversion element 300g (e.g., green color
conversion element) may be referred to as a second set of wire
grids, and the first wire grids of the third color conversion
element 300b (e.g., blue color conversion element) may be referred
to as a third set of wire grids. Likewise, if it is desired to
equip the color conversion elements 300r, 300g and 300b
corresponding to the display region AR of the sub-pixels PX of
different colors with color conversion function other than the
polarizing function, it may be designed as that the cycles of the
color conversion element 300r (e.g., red color conversion element),
the color conversion element 300g (e.g., green color conversion
element) and the color conversion element 300b (e.g., blue color
conversion element) corresponding to the display region AR of the
sub-pixels PX of different colors are different. In other words,
the second wire grids have various cycles. For example, the cycle
of the color conversion element 300r (e.g. red color conversion
element) corresponding to the display region AR of the first color
sub-pixel PX (e.g., red color sub-pixel) is larger than the cycle
of the color conversion element 300g (e.g., green color conversion
element) corresponding to the display region AR of the second color
sub-pixel PX (e.g., green color sub-pixel) and the cycle of the
color conversion element 300b (e.g., blue color conversion element)
corresponding to the display region AR of the third color sub-pixel
PX (e.g., blue color sub-pixel), and the cycle of the color
conversion element 300g (e.g., green color conversion element)
corresponding to the display region AR of the second color
sub-pixel PX (e.g., green color sub-pixel) is larger than the cycle
of the color conversion element 300b (e.g., blue color conversion
element) corresponding to display region AR of the third color
sub-pixel PX (e.g., blue color sub-pixel). In other words, the
second wire grids of the first color conversion element 300r (e.g.,
red color conversion element) corresponding to the first color
sub-pixel PX may be referred to as the first set of wire grids, the
second wire grids of the second color conversion element 300g
(e.g., green color conversion element) corresponding to the second
color sub-pixel PX may be referred to as the second set of wire
grids, and the second wire grids of the third color conversion
element 300b (e.g., blue color conversion element) corresponding to
the third color sub-pixel PX may be referred to as the third set of
wire grids. In some embodiments, it is optional to dispose
additional color conversion layer (or referred to as additional
wavelength conversion layer, not shown) on the image sensing layer
400 (e.g., image sensing elements 400r, 400g, 400b) in the image
sensing region NR-1, thereby improving color purity of color.
[0046] In the embodiment, since the color conversion element (e.g.,
color conversion elements 300r, 300g, 300b) are a plurality of wire
grids substantially parallel with each other, the color conversion
elements (e.g., color conversion elements 300r, 300g, 300b)
corresponding to the display region AR of different color
sub-pixels PX may also serve as a polarizer. That is, the color
conversion elements (e.g., color conversion elements 300r, 300g,
300b) may be used to allow only the light from a single direction,
among the light that is vibrated toward every direction, to pass
through, and the light that is vibrated toward other directions is
blocked or absorbed. In this manner, the color conversion elements
(e.g., color conversion elements 300r, 300g, 300b) in the
embodiment keep the light to be emitted in a collimated manner,
such that the visual quality for the user to watch the display
panel 10 can be improved. Additionally, the embodiment may adopt
the sub-pixels (e.g. sub-pixels shown in FIG. 5) described in the
above-mentioned embodiment.
[0047] FIG. 7 is a schematic cross-sectional view of a sub-pixel in
yet another embodiment of the display panel in the first embodiment
of FIG. 2 taken along line B-B'. It should be indicated that, the
embodiment of FIG. 7 adopts the reference numeral and partial
content of the embodiment of FIG. 4, wherein the same or similar
reference numeral represents the same or similar element, and the
same technical content is omitted. The omitted descriptions can be
derived from the embodiments and effects described above and thus
no repetition is incorporated hereinafter.
[0048] Referring to FIG. 7, FIG. 7 illustrates a schematic
cross-sectional view of a sub-pixel according to another
embodiment. In an embodiment, the display medium layer 122 provided
in the display panel 10 is, for example, a micro light emitting
element (or referred to as display element), and different
sub-pixels PX disposed in the display region AR may respectively
display different colors. In some embodiments, the micro light
emitting element may be electrically connected to the
above-mentioned signal line (e.g., at least one of the at least one
scan line (not shown), at least one data line (not shown), at least
one common electrode line (not shown), at least one power supply
line (not shown), or other suitable line) through the corresponding
switch element T. The size of the micro light emitting element is,
for example, smaller than 100 .mu.m, preferably smaller than 50
.mu.m but larger than 0 .mu.m. The micro light emitting element may
be, for example, an organic light emitting element and/or an
inorganic light emitting element, and preferably, may be an
inorganic light emitting element, the disclosure is not limited
thereto. The structure of the micro light emitting element may be a
P-N diode, a P-I-N diode or other suitable structure. When the
micro light emitting element is an organic light emitting element,
the micro light emitting element may, for example, include an
organic light emitting layer (not shown) and two electrodes, and
the organic light emitting layer is disposed between the two
electrodes. For example, one of the two electrodes may be a display
electrode 110, or one of the two electrodes may be electrically
connected to the display electrode 110. The material of the organic
light emitting layer may be an organic polymer light emitting
material, an organic small molecule light emitting material, an
organic complex light emitting material or other suitable material.
In some embodiments, the organic light emitting layer corresponding
to different color sub-pixels PX may, for example, include an
organic light emitting layer corresponding to the first color
sub-pixel PX (e.g., red sub-pixel) may be, for example, a red
organic light emitting layer, an organic light emitting layer
corresponding to the second color sub-pixel PX (e.g. green
sub-pixel) may be, for example, a green organic light emitting
layer, an organic light emitting layer corresponding to the third
color sub-pixel PX (e.g., blue sub-pixel) may be, for example, a
blue organic light emitting layer, and an organic light emitting
layer corresponding to other color sub-pixel PX (e.g., other color
sub-pixel) may be, for example, an other colors light emitting
layer, or an other suitable color organic light emitting layer, or
a combination thereof. When the micro light emitting element is the
inorganic light emitting element, the micro light emitting element
may, for example, include an inorganic light emitting layer (not
shown) and two electrodes, and the inorganic light emitting layer
is disposed between the two electrodes, such that the micro light
emitting element forms an electrode structure arranged vertically,
that is, the two electrodes are respectively disposed on different
sides of the inorganic light emitting layer. When the micro light
emitting element is the electrode structure that is arranged
vertically, one of the two electrodes of the micro light emitting
element may be directly in contact with the display electrode 110
or electrically connected to the display electrode 110 through a
conductive material (e.g., indium, tin, gold, or other suitable
material or a combination thereof), and the micro light emitting
element may be regarded as being disposed on the display electrode
110. In other embodiments, the two electrodes may also be disposed
on the same side of the inorganic light emitting layer, such that
the micro light emitting element forms an electrode structure
arranged horizontally. When the micro light emitting element is the
electrode structure arranged horizontally, the micro light emitting
element may be adhered to the first substrate 100 through an
adhesive layer (not shown), and the one of the two electrodes of
the micro light emitting element is electrically connected to the
display electrode 110, and the adhesive layer (not shown) may have
insulation property (preferably, but not limited thereto), such
that abnormal current direction can be avoided. The material of the
inorganic light emitting layer may be, for example, perovskite
material, rare earth ion light emitting material, rare earth
phosphor material, semiconductor light emitting material or other
suitable material.
[0049] Furthermore, the display panel 10 may further selectively
include a display defining pattern 124, which may be disposed on
the first substrate 100, but the disclosure is not limited thereto.
In other embodiments, the display defining pattern 124 may be
disposed on the second substrate 200 or divided into two parts
respectively disposed on the first substrate 100 and the second
substrate 200. The micro light emitting element may be disposed in
at least one opening 124a included in the display defining pattern
124. When the micro light emitting element is the electrode
structure arranged horizontally, the micro light emitting element
may be adhered to the first substrate 100 through the adhesive
layer (not shown) that is only disposed in the opening 124a, but
the disclosure provides is not limited to the micro light emitting
element which is the electrode structure arranged horizontally. In
other embodiments, a filler layer 126 may be further selectively
disposed between the second substrate 200 and the first substrate
100, and may be filled in the opening 124a and, for example, may
surround and/or cover the micro light emitting element so as to
better protect the micro light emitting element, but the disclosure
is not limited thereto.
[0050] In the embodiment, the color conversion elements 300r, 300g,
300b of the display panel 10 may also use the plurality of wire
grids substantially parallel with each other as described in the
above-mentioned embodiment, and related descriptions may be derived
from the above-mentioned embodiments; therefore, no repetition is
incorporated hereinafter. Additionally, the embodiment may also
adopt the sub-pixels described in the above-mentioned embodiment
(e.g., sub-pixels shown in FIG. 5).
[0051] FIG. 8 is a schematic cross-sectional view of a sub-pixel in
one embodiment of a display panel in a second embodiment of FIG. 2
taken along line A-A'. FIG. 9 is a schematic cross-sectional view
of a sub-pixel in one embodiment of the display panel in the second
embodiment of FIG. 2 taken along line B-B'. Referring to FIG. 2,
FIG. 8 and FIG. 9, a display panel 20 in the embodiment includes
the first substrate 100, the second substrate 200, the color
conversion layer 300 and the image sensing layer 400. It should be
indicated that the embodiments of FIG. 8 and FIG. 9 respectively
adopt the element numeral and partial content of the embodiments of
FIG. 3 and FIG. 4, wherein the same or similar numerals represent
the same or similar elements, and the same technical content is
omitted. The omitted partial descriptions may be derived from the
above-mentioned embodiments and effects and correspondingly
modified; therefore, no repetition is incorporated in the following
embodiment.
[0052] Referring to FIG. 8 and FIG. 9, in the embodiment, an outer
surface 200a of the second substrate 200 serves as a viewing
surface. From another perspective, the display surface of the
display panel 20 may be the outer surface 200a of the second
substrate 200, which may provide a display image for user to watch.
Therefore, comparing the configuration relationship between the
sub-pixels PX, the dielectric layer 130, the protection layer 140,
the color conversion layer 300 and the image sensing layer 400
located between the first substrate 100 and the second substrate
200 with the embodiments in FIG. 3 and FIG. 4, the difference
between the two is described as follows. The sub-pixel PX is
disposed on the first substrate 100, and the color conversion layer
300, the image sensing layer 400 as well as the dielectric layer
130 are disposed on the second substrate 200. The switch element T
may be disposed on the first substrate 100, the protection layer
140 may also be disposed on the first substrate 100 and located
between the first substrate 100 and the second substrate 200 while
covering the switch element T. In some embodiments, the display
panel 20 may not be provided with the protection layer 140. The
dielectric layer 130 covers the image sensing layer 400 and a
portion of the second substrate 200. Furthermore, the dielectric
layer 130 may further cover a portion of the color conversion layer
300. When the display medium layer 120 is the non-self illuminating
material, other backlight source (not shown) in the above-mentioned
embodiment may be disposed on the outer side of the first substrate
100 instead being located on the outer surface 200a of the second
substrate 200 and between the second substrate 200 and the first
substrate 100.
[0053] In an embodiment, the electrode (e.g., first electrode 410)
of the image sensing layer 400 closer to the second substrate 200
may include a transparent or semi-transparent conductive material
(descriptions related to the material may be derived from the
above-mentioned embodiment). Another electrode (e.g., second
electrode 420) of the image sensing layer 400 farther from the
second substrate 200 is preferably selected from a reflective
conductive material (or referred to as non-transparent conductive
material), or a stack layer of the reflective conductive material
and the transparent conductive material (descriptions related to
the material may be derived from the above-mentioned embodiment),
and another electrode (e.g., second electrode 420) of the image
sensing layer 400 farther from the second substrate 200 may serve
as, for example, the light shielding element described in the
above-mentioned embodiment (as described in FIG. 3 and FIG. 4), and
related descriptions can be derived from the above-mentioned
embodiment; therefore, no repetition is incorporated hereinafter.
Also, the embodiment may adopt the sub-pixel (e.g., sub-pixel shown
in FIG. 5) described in the above-mentioned embodiment.
[0054] Based on the descriptions regarding the illustration (e.g.,
cross-sectional views in FIG. 8 and FIG. 9) of the embodiment,
since the image sensing element (e.g., image sensing elements 400r,
400g, 400b) disposed in the image sensing region NR-1 of the
display panel 20 may serve as a camera having function (e.g., for
the function of video, selfie, picture and/or text scanning, 3D
recognition unlocking, or other functions applicable for the
camera), the usable area of the display panel 20 (e.g., usable area
of second substrate 200) may be significantly increased, such that
there is no need to adapt to other electronic elements (not shown)
and sacrifice the usable area (e.g., usable area of second
substrate 200) and/or the image sensing resolution of the display
panel 20 may be enhanced. Furthermore, the sub-pixel PX in the
embodiment is disposed on the first substrate 100, and the color
conversion layer 300, the image sensing layer 400 as well as the
dielectric layer 130 are disposed on the second substrate 200, as
compared with the above-mentioned embodiment (e.g., the color
conversion layer 300, sub-pixel PX, image sensing layer 400 and
dielectric layer 130 are all disposed on the first substrate 100),
the embodiment may further improve the flexibility of manufacturing
process, and the margin of circuit design may be increased.
[0055] FIG. 10 is a schematic cross-sectional view of a sub-pixel
in another embodiment of the display panel in the second embodiment
of FIG. 2 taken along line B-B'. It should be indicated that, the
embodiment of FIG. 10 adopts the reference numeral and partial
content of the embodiment of FIG. 9, wherein the same or similar
reference numerals represent the same or similar elements, and the
same technical content is omitted. The omitted descriptions can be
derived from the embodiments and effects described above and thus
no repetition is incorporated hereinafter.
[0056] Referring to FIG. 10, the main difference between the
embodiment of FIG. 10 and the embodiment of FIG. 9 is that the
color conversion elements 300r, 300g and 300b may be a plurality of
wire grids substantially parallel with each other, and the property
and effect of the wire grids can be derived from the
above-mentioned embodiments (e.g., embodiment of FIG. 6);
therefore, no repetition is incorporated hereinafter. In the
embodiment, the outer surface 200a of the second substrate 200 may
serve as a viewing surface. From another perspective, the display
surface of the display panel 20 may be the outer surface 200a of
the second substrate 200, which may provide a display image for the
user to watch. Furthermore, the descriptions and mutual
relationship between the sub-pixel PX, the dielectric layer 130,
the protection layer 140, the color conversion layer 300, the image
sensing layer 400 or other elements of the display panel 20 can be
derived from the descriptions of the above-mentioned embodiments
(e.g., FIG. 8 and FIG. 9); therefore, no repetition is incorporated
hereinafter. The embodiment may also adopt the sub-pixel (e.g.,
sub-pixel shown in FIG. 5) described in the above-mentioned
embodiment.
[0057] FIG. 11 is a schematic cross-sectional view of a sub-pixel
in yet another embodiment of the display panel in the second
embodiment of FIG. 2 taken along line B-B'. It should be indicated
that, the embodiment of FIG. 11 adopts the reference numeral and
partial content of the embodiment of FIG. 9, wherein the same or
similar reference numerals represent the same or similar elements,
and the same technical content is omitted. The omitted descriptions
can be derived from the embodiments and effects described above and
correspondingly modified and thus no repetition is incorporated
hereinafter.
[0058] Referring to FIG. 11, the main difference between another
embodiment shown in FIG. 11 and the embodiment of FIG. 10 is that
the display medium layer 122 of the display panel 20 is, for
example, a micro light emitting element (or referred to as display
element), which is disposed on the first substrate 100. In some
embodiments, the display panel 20 may further selectively include
the display defining pattern 124, which may be disposed on the
first substrate 100, but the disclosure is not limited thereto. In
other embodiments, the display defining pattern 124 may be disposed
on the second substrate 200 or divided into two portions
respectively disposed on the first substrate 100 and the second
substrate 200. The micro light emitting element may be disposed in
at least one opening 124a included in the display defining pattern
124. In the embodiment shown in FIG. 11, the property and related
descriptions of the micro light emitting element and the display
defining pattern 124 can be derived from the above-mentioned
embodiment (e.g., embodiment of FIG. 7) and correspondingly
modified, and thus no repetition is incorporated hereinafter. Also,
the embodiment may adopt the sub-pixel (e.g., sub-pixel shown in
FIG. 5) described in the above-mentioned embodiment and/or the
color conversion elements 300r, 300g and 300b may be a plurality of
wire grids substantially parallel with each other, and the property
and effect thereof can be derived from the descriptions of the
above-mentioned embodiments (e.g., embodiment of FIG. 6).
[0059] FIG. 12 is a schematic cross-sectional view of a display
panel integrated with a touch element according to an embodiment of
the disclosure. FIG. 13 is a schematic top view of an electronic
device including a display panel according to an embodiment of the
disclosure. Referring to FIG. 12, the display panel 10 or the
display panel 20 may further include a touch element 30. That is,
the touch element 30 and the display panel 10 or display panel 20
described in one of the above-mentioned embodiments may be
integrated to form a touch display panel 40. The touch element 30
overlaps at least a portion of the display unit AU. FIG. 12
illustrates a touch display panel accorded to an embodiment of the
disclosure. Hereinafter, it is exemplified that the touch element
30 and the display panel 10 includes the display medium layer 120
are integrated to foilii the touch display panel 40. The touch
display panel 40, for example, includes the first substrate 100,
the display medium layer 120, the second substrate 200 and the
touch element 30. In the example where the touch element 30 and the
display panel 20 includes the display medium layer 122 are
integrated to form the touch display panel 40, the touch display
panel 40 may, for example, include the first substrate 100, the
display medium layer 122, the second substrate 200 and the touch
element 30. The first substrate 100 and the second substrate 200
are disposed opposite to each other, and the display medium layer
120 or 122 is disposed between the first substrate 100 and the
second substrate 200. In the embodiment, the touch element 30 is,
for example, formed on the outer side of the second substrate 200
or formed on the outer side of the first substrate 100 to form an
on-cell touch display panel, but the disclosure is not limited
thereto. The touch element 30 may be, for example, detachably
disposed on the display panel 10 or the display panel 20 to form an
out-cell touch display panel. Additionally, the touch element may
be disposed within the display panel 10 or the display panel 20,
for example, on the inner surface of at least one of the first
substrate 100 and the second substrate 200 to form an in-cell touch
display panel. In other embodiments, the touch element 30 may be
used along with related electrode of the micro light emitting
element (display medium layer 122), e.g., one of the two electrodes
of the micro light emitting element, at least one electrode of
storage capacitance, other suitable electrode or a combination of
at least one thereof.
[0060] Referring to FIG. 13, the display panel 10 or the display
panel 20 described in the above-mentioned embodiment of the
disclosure may be applied to an electronic device 50. FIG. 13
illustrates a schematic top view of the electronic device 50
including the display panel 10 or the display panel 20. Preferably,
when the electronic device 50 including the display panel 10 or the
display panel 20 of the above-mentioned embodiment of the
disclosure is viewed from the front side, a housing 70 is less
visible, and shown with an extremely narrow frame, or even
frameless. Furthennore, when facing the electronic device 50,
preferably, the outer surface of the display panel 10 or the
display panel 20 is visible, and it is less likely to see a hole
which is configured for accommodating an electronic element module
having other function (for example, a hole that accommodating
speaker, a hole that accommodating shooter, or a hole accommodating
other element) and/or a mechanical element (e.g., press-type
mechanical piece or other mechanical piece), such that the display
panel 10 or the display panel 20 of the electronic device 50
exhibits a full screen display image. In an embodiment, the display
panel 10 or the display panel 20 may be, for example, electrically
connected to an electronic element 60 to be assembled as the
electronic device 50. In other embodiments, the housing 70 may
accommodate the display panel 10 or the display panel 20 and the
electronic element 60, but the disclosure is not limited thereto.
The electronic element 60 may be, for example, a control element,
an operating element, a processing elements, an input elements, a
memory element, a driving element, a light emitting element, a
protection element, a sensing element, a detecting element, an
element with other function, or a combination of the above
elements. Moreover, the type of the electronic device 50 may be,
for example, a portable product (e.g., smart phone, video camera,
photo-camera, notebook computer, game player, music player, e-mail
transceiver, map navigator, digital frame or the like), a video
product (e.g., video player or the like), a screen, a TV, an
outdoor/indoor signage or a panel of projector and so on.
[0061] Based on the above, the electronic device 50 including the
display panel 10 or the display panel 20 described in the
above-mentioned embodiment may have higher screen-to-body ratio.
Meanwhile, since the image sensing element (e.g., image sensing
element 400r, 400g, 400b) is disposed on the first substrate 100 or
the second substrate 200 of the display panel 10 or the display
panel 20, the electronic device 50 including the display panel 10
or the display panel 20 is more compact, thereby reducing user's
burden when carrying the electronic device 50.
[0062] Furthermore, the display panel 10 or 20 described in one of
the above-mentioned embodiments may further selectively include a
plurality of transparent regions (not shown) and is associated with
the sub-pixels PX of at least one of the display units AU, such
that the display panel 10 or 20 may serve as the transparent
display panel, and the electronic device 50 including the
transparent display panel may be referred to as transparent
electronic device. For example, at least one transparent region may
serve as a transparent unit which may correspond to at least one
display unit AU, at least one transparent region may serve as a
transparent sub-pixel which may correspond to at least one
sub-pixel PX, at least one transparent region may be a portion of
at least one display unit AU, or the at least one transparent
region may be a portion of at least one sub-pixel PX (e.g., a
portion of the display region AR of at least one sub-pixel PX). The
transparent region (not shown), preferably, may be selectively
provided without the display medium layer 120 or 122, but the
disclosure is not limited thereto.
[0063] In summary, the disclosure is configured in the manner that
the image sensing element is disposed within the display panel,
such that all of the regions in the display region of the display
panel of the disclosure may serve the display function, and thus
the valid display region of the display panel may be less affected
and even enhanced. Besides, the image sensing capability of the
display panel embedded with image sensing element of the disclosure
may be less affected and even improved while serve as camera. The
display panel embedded with the image sensing element allows the
display panel to have lighter weight and/or thinner thickness.
Moreover, the design of the display panel of the disclosure allows
the image sensing element to be close to the first substrate or the
second substrate, which increases flexibility of manufacturing
process and/or increases margin of circuit. Additionally, the
electronic device including the display panel of the disclosure has
high screen-to-body ratio accordingly. Furthennore, since the image
sensing element of the disclosure is disposed within the display
device, the electronic device including the display panel may have
lighter weight and/or thinner thickness, thereby reducing user's
burden when carrying the electronic device.
[0064] It will be apparent to those skilled in the art that various
modifications and variations can be made to the disclosed
embodiments without departing from the scope or spirit of the
disclosure. In view of the foregoing, it is intended that the
disclosure covers modifications and variations provided that they
fall within the scope of the following claims and their
equivalents.
* * * * *