U.S. patent application number 16/609501 was filed with the patent office on 2020-10-22 for flexible display device.
The applicant listed for this patent is WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.. Invention is credited to Wen HAN, Fang WANG, Zhuo ZHANG.
Application Number | 20200333844 16/609501 |
Document ID | / |
Family ID | 1000005132212 |
Filed Date | 2020-10-22 |
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United States Patent
Application |
20200333844 |
Kind Code |
A1 |
ZHANG; Zhuo ; et
al. |
October 22, 2020 |
FLEXIBLE DISPLAY DEVICE
Abstract
A flexible display device is provided. The flexible display
device includes a housing assembly, and a flexible display screen
located in the housing assembly. The flexible display screen
includes a backplate layer, a display panel located on the
backplate layer, and a cover-plate layer located on the display
panel. When the flexible display screen is curled, the backplate
forms a first curling portion, the display panel forms a second
curling portion, and the cover-plate layer forms a third curling
portion. The first curling portion and the third curling portion
are located inside the second curling portion.
Inventors: |
ZHANG; Zhuo; (Wuhan, Hubei,
CN) ; HAN; Wen; (Wuhan, Hubei, CN) ; WANG;
Fang; (Wuhan, Hubei, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY
CO., LTD. |
Wuhan, Hubei |
|
CN |
|
|
Family ID: |
1000005132212 |
Appl. No.: |
16/609501 |
Filed: |
May 8, 2019 |
PCT Filed: |
May 8, 2019 |
PCT NO: |
PCT/CN2019/085964 |
371 Date: |
October 30, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G06F 1/1624 20130101;
G06F 1/1652 20130101; G06F 1/26 20130101 |
International
Class: |
G06F 1/16 20060101
G06F001/16; G06F 1/26 20060101 G06F001/26 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 16, 2019 |
CN |
201910305879.3 |
Claims
1. A flexible display device, comprising: a housing assembly, and a
flexible display screen located in the housing assembly; wherein
the flexible display screen comprises a backplate layer, a display
panel located on the backplate layer, and a cover-plate layer
located on the display panel; when the flexible display screen is
curled, the backplate layer forms a first curling portion, the
display panel forms a second curling portion, and the cover-plate
layer forms a third curling portion; a curling direction of the
first curling portion is different from a curling direction of the
third curling portion, a curling direction of the second curling
portion is same as the curling direction of the first curling
portion or of the third curling portion, wherein the first curling
portion and the third curling portion are located inside the second
curling portion.
2. The flexible display device according to claim 1, wherein a
circumscribed circle diameter of the second curling portion is
equal to the sum of a circumscribed circle diameter of the first
curling portion and a circumscribed circle diameter of the third
curling portion.
3. The flexible display device according to claim 2, wherein the
circumscribed circle diameter of the first curling portion is equal
to the circumscribed circle diameter of the third curling
portion.
4. The flexible display device according to claim 1, wherein the
backplate layer is curled in the clockwise direction or the
counterclockwise direction to form the first curling portion; the
cover-plate layer is curled in the clockwise direction or the
counterclockwise direction, being different from the curling
direction of the backplate layer, to form the third curling
portion; the display panel is curled in the clockwise direction or
the counterclockwise direction to form the second curling
portion.
5. The flexible display device according to claim 1, wherein the
flexible display screen further comprises a first bonding layer
located between the backplate layer and the display panel, and a
second bonding layer located between the display panel and the
cover-plate layer; when the flexible display screen is curled, the
first bonding layer is separated from the backplate layer, the
second bonding layer is separated from the cover-plate layer, and
the first bonding layer, the second bonding layer, and the display
panel are curled in the clockwise direction or the counterclockwise
direction to form the second curling portion.
6. The flexible display device according to claim 5, wherein the
flexible display screen further comprises a third bonding layer
located between the backplate layer and the first bonding layer,
and a fourth bonding layer located between the cover-plate layer
and the second bonding layer; when the flexible display screen is
curled, the third bonding layer is separated from the first bonding
layer, the second bonding layer is separated from the fourth
bonding layer; the backplate layer and the third bonding layer are
curled in the clockwise direction or the counterclockwise direction
to form the first curling portion; the cover-plate layer and the
fourth bonding layer are curled in the clockwise direction or the
counterclockwise direction, being different from the curling
direction of the backplate layer and the third bonding layer, to
form the third curling portion.
7. The flexible display device according to claim 1, wherein the
flexible display screen further comprises a fixed portion; one end
of the backplate layer, of the display panel, and of the
cover-plate layer connect with the fixed portion; when the flexible
display screen is curled, the backplate layer, the display panel,
and the cover-plate layer are curled from another end away from the
fixed portion toward the fixed portion.
8. The flexible display device according to claim 7, wherein a
processor, a driving chip, and an external port are disposed in the
fixed portion.
9. The flexible display device according to claim 7, wherein the
flexible display screen further comprises a sliding portion; the
sliding portion disposed in parallel with the fixed portion; when
the flexible display screen is curled, the sliding portion slides
from the end away from the fixed portion toward the fixed portion,
and the backplate layer, the display panel, and the cover-plate
layer are curled from the end away from the fixed portion toward
the fixed portion; when the flexible display screen is expanded,
the sliding portion slides from the fixed portion toward the end
away from the fixed portion, and the first curling portion, the
second curling portion, and the third curling portion are expended
to correspondingly form the backplate layer, the display panel, and
the cover-plate layer.
10. The flexible display device according to claim 9, wherein the
sliding portion comprises a hollow area; the sliding portion slides
between the fixed portion and one end, away from the fixed portion,
of the flexible display screen through the hollow area.
11. The flexible display device according to claim 9, wherein the
flexible display screen further comprises an engaging area; the
engaging area is located at an edge area of the flexible display
screen; wherein an engaging assembly is disposed in the engaging
area.
12. The flexible display device according to claim 11, wherein the
engaging assembly comprises: at least one first protrusion located
at one side, adjacent to the backplate layer, of the display panel,
at least one second protrusion located at one side, adjacent to the
cover-plate layer, of the display panel, at least one first groove
located at one side, adjacent to the display panel, of the
backplate layer, and at least one second groove located at one
side, adjacent to the display panel, of the cover-plate layer; when
the flexible display screen is expanded, the sliding portion slides
from the fixed portion toward one end, away from the fixed portion,
of the flexible display screen, the sliding portion realizes the
engagement of the first protrusion of the display panel and the
first groove of the backplate layer, and the engagement of the
second protrusion of the display panel and the second groove of the
cover-plate layer; when the flexible display screen is curled, the
sliding portion slides from the end, away from the fixed portion,
of the flexible display screen toward the fixed portion, the first
protrusion of the display panel is separated from the first groove
of the backplate layer, and the second protrusion of the display
panel is separated from the second groove of the cover-plate
layer.
13. The flexible display device according to claim 1, wherein the
flexible display screen further comprises a touch layer; the touch
layer located on the display panel or the cover-plate layer.
14. The flexible display device according to claim 1, wherein the
housing assembly further comprises a first housing; when the
flexible display screen is curled, the first curling portion, the
second curling portion, and the third curling portion are located
in the first housing.
15. The flexible display device according to claim 14, wherein a
first opening is disposed on one end of the first housing; when the
flexible display screen is curled, the first curling portion, the
second curling portion, and the third curling portion enter the
first housing via the first opening.
16. The flexible display device according to claim 14, wherein an
inscribed circle diameter of the first housing is greater than a
circumscribed circle diameter of the second curling portion.
17. The flexible display device according to claim 14, wherein the
housing assembly further comprises a second housing; a second
opening is disposed on one end of the second housing; and the first
housing enters the second housing via the second opening.
18. The flexible display device according to claim 17, wherein a
power supply assembly is disposed in the first housing or in the
second housing.
Description
FIELD OF INVENTION
[0001] The present invention relates to a field of display
technologies, and more particularly, to a flexible display
device.
BACKGROUND OF INVENTION
[0002] With the development of technology, the appearance of mobile
electronic devices has tremendous changes. Flexible screens have
attracted much attention due to their unique characteristics and
huge potential. Compared with traditional screens, flexible screens
have stronger flexibility and well bendable characteristic, which
can reduce the degree of accidental damage to the equipment, and
flexible screens are more durable than other screens.
[0003] Current flexible screens include foldable display screens
and rollable display screens, the above two types of display
screens may reduce the size of panel with a certain degree, but
they still occupy a large space.
[0004] Therefore, it is necessary to provide a flexible display
device to solve the problems of the prior art.
SUMMARY OF INVENTION
[0005] The present application provides a flexible display device
to solve the technical problem that existing flexible screens
occupy a large space.
[0006] In order to solve the aforementioned problem, the technical
solution provided by the present application as follow:
[0007] The present application provides a flexible display device,
including a housing assembly, and a flexible display screen located
in the housing assembly;
[0008] wherein the flexible display screen includes a backplate
layer, a display panel located on the backplate layer, and a
cover-plate layer located on the display panel;
[0009] when the flexible display screen is curled, the backplate
layer forms a first curling portion, the display panel forms a
second curling portion, and the cover-plate layer forms a third
curling portion;
[0010] a curling direction of the first curling portion is
different from a curling direction of the third curling portion, a
curling direction of the second curling portion is same as the
curling direction of the first curling portion or of the third
curling portion, wherein the first curling portion and the third
curling portion are located inside the second curling portion.
[0011] In the flexible display device of the present
application,
[0012] a circumscribed circle diameter of the second curling
portion is equal to the sum of a circumscribed circle diameter of
the first curling portion and a circumscribed circle diameter of
the third curling portion.
[0013] In the flexible display device of the present application,
the circumscribed circle diameter of the first curling portion is
equal to the circumscribed circle diameter of the third curling
portion.
[0014] In the flexible display device of the present application,
the backplate layer is curled in the clockwise direction or the
counterclockwise direction to form the first curling portion;
[0015] the cover-plate layer is curled in the clockwise direction
or the counterclockwise direction, being different from the curling
direction of the backplate layer, to form the third curling
portion;
[0016] the display panel is curled in the clockwise direction or
the counterclockwise direction to form the third curling
portion.
[0017] In the flexible display device of the present
application,
[0018] the flexible display screen further includes a first bonding
layer located between the backplate layer and the display panel,
and a second bonding layer located between the display panel and
the cover-plate layer;
[0019] when the flexible display screen is curled, the first
bonding layer is separated from the backplate layer, the second
bonding layer is separated from the cover-plate layer, and the
first bonding layer, the second bonding layer, and the display
panel are curled in the clockwise direction or the counterclockwise
direction to form the second curling portion.
[0020] In the flexible display device of the present
application,
[0021] the flexible display screen further includes a third bonding
layer located between the backplate layer and the first bonding
layer, and a fourth bonding layer located between the cover-plate
layer and the second bonding layer;
[0022] when the flexible display screen is curled, the third
bonding layer is separated from the first bonding layer, the second
bonding layer is separated from the fourth bonding layer;
[0023] the backplate layer and the third bonding layer are curled
in the clockwise direction or the counterclockwise direction to
form the first curling portion;
[0024] the cover-plate layer and the fourth bonding layer are
curled in the clockwise direction or the counterclockwise
direction, being different from the curling direction of the
backplate layer and the third bonding layer, to form the third
curling portion.
[0025] In the flexible display device of the present
application,
[0026] the flexible display screen further includes a fixed
portion;
[0027] one end of the backplate layer, of the display panel, and of
the cover-plate layer connect with the fixed portion;
[0028] when the flexible display screen is curled, the backplate
layer, the display panel, and the cover-plate layer are curled from
another end away from the fixed portion toward the fixed
portion.
[0029] In the flexible display device of the present
application,
[0030] a processor, a driving chip, and an external port are
disposed in the fixed portion.
[0031] In the flexible display device of the present
application,
[0032] the flexible display screen further includes a sliding
portion;
[0033] the sliding portion disposed in parallel with the fixed
portion;
[0034] when the flexible display screen is curled, the sliding
portion slides from the end away from the fixed portion toward the
fixed portion, and the backplate layer, the display panel, and the
cover-plate layer are curled from the end away from the fixed
portion toward the fixed portion;
[0035] when the flexible display screen is expanded, the sliding
portion slides from the fixed portion toward the end away from the
fixed portion, and the first curling portion, the second curling
portion, and the third curling portion are expended to
correspondingly form the backplate layer, the display panel, and
the cover-plate layer.
[0036] In the flexible display device of the present
application,
[0037] the sliding portion includes a hollow area;
[0038] the sliding portion slides between the fixed portion and one
end, away from the fixed portion, of the flexible display screen
through the hollow area.
[0039] In the flexible display device of the present
application,
[0040] the flexible display screen further includes an engaging
area;
[0041] the engaging area is located at an edge area of the flexible
display screen;
[0042] wherein an engaging assembly is disposed in the engaging
area.
[0043] In the flexible display device of the present
application,
[0044] the engaging assembly includes
[0045] at least one first protrusion located at one side, adjacent
to the backplate layer, of the display panel, at least one second
protrusion located at one side, adjacent to the cover-plate layer,
of the display panel, at least one first groove located at one
side, adjacent to the display panel, of the backplate layer, and at
least one second groove located at one side, adjacent to the
display panel, of the cover-plate layer;
[0046] when the flexible display screen is expanded, the sliding
portion slides from the fixed portion toward one end, away from the
fixed portion, of the flexible display screen, the sliding portion
realizes the engagement of the first protrusion of the display
panel and the first groove of the backplate layer, and the
engagement of the second protrusion of the display panel and the
second groove of the cover-plate layer;
[0047] when the flexible display screen is curled, the sliding
portion slides from the end, away from the fixed portion, of the
flexible display screen toward the fixed portion, the first
protrusion of the display panel is separated from the first groove
of the backplate layer, and the second protrusion of the display
panel is separated from the second groove of the cover-plate
layer.
[0048] In the flexible display device of the present
application,
[0049] the flexible display screen further includes a touch
layer;
[0050] the touch layer located on the display panel or the
cover-plate layer.
[0051] In the flexible display device of the present
application,
[0052] the housing assembly further includes a first housing;
[0053] when the flexible display screen is curled, the first
curling portion, the second curling portion, and the third curling
portion are located in the first housing.
[0054] In the flexible display device of the present
application,
[0055] a first opening is disposed on one end of the first
housing;
[0056] when the flexible display screen is curled, the first
curling portion, the second curling portion, and the third curling
portion enter the first housing via the first opening.
[0057] In the flexible display device of the present application,
an inscribed circle diameter of the first housing is greater than a
circumscribed circle diameter of the second curling portion.
[0058] In the flexible display device of the present
application,
[0059] the housing assembly further includes a second housing;
[0060] a second opening is disposed on one end of the second
housing; and
[0061] the first housing enters the second housing via the second
opening.
[0062] In the flexible display device of the present application, a
power supply assembly is disposed in the first housing or in the
second housing.
[0063] The beneficial effect: the present application curls the
flexible display screen by dividing the flexible display screen
into three portions, wherein the curling direction of the first
curling portion and of the third curling portion are opposite, and
the second curling portion can wrap the first curling portion and
the third curling portion. The flexible display screen is curled
into a cylinder, such that the volume of the flexible display
screen can be reduced and the flexible display screen can
convenient to carry.
DESCRIPTION OF DRAWINGS
[0064] In order to more clearly illustrate the technical solutions
in the embodiments or the prior art, the following drawings, which
are intended to be used in the description of the embodiments or
the prior art, will be briefly described. It will be apparent that
the drawings and the following description are only some
embodiments of the present invention. Those of ordinary skill in
the art may, without creative efforts, derive other drawings from
these drawings.
[0065] FIG. 1 is a structural diagram of a first type film layer
structure of a flexible display screen of the present
application.
[0066] FIG. 2 is a structural diagram showing a first curling type
of the flexible display screen of the present application.
[0067] FIG. 3 is a structural diagram showing a second curling type
of the flexible display screen of the present application.
[0068] FIG. 4 is a structural diagram of a third type film layer
structure of the flexible display screen of the present
application.
[0069] FIG. 5 is a structural diagram showing the flexible display
screen of the application in an expanded state.
[0070] FIG. 6 is an enlarged view of the area A in FIG. 5.
[0071] FIG. 7 is a first structural diagram of a flexible display
device of the present application.
[0072] FIG. 8 is a second structural diagram of the flexible
display device of the present application.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0073] In the following detailed description of the preferred
embodiments, reference is made to the accompanying drawings which
form a part hereof, and in which is shown by way of illustration
specific embodiments in which the invention may be practiced. In
this regard, directional terminology, such as "top", "bottom",
"front", "back", "left", "right", "inside", "outside", "side",
etc., is used with reference to the orientation of the figure(s)
being described. As such, the directional terminology is used for
purposes of illustration and is in no way limiting. Throughout this
specification and in the drawings like parts will be referred to by
the same reference numerals.
[0074] Please refer to FIG. 1, FIG. 1 is a structural diagram of a
first type film layer structure of a flexible display screen of the
present application.
[0075] The flexible display device includes 100 a housing assembly
80, and a flexible display screen 300 located in the housing
assembly 80.
[0076] The flexible display screen 300 includes a backplate layer
10, a display panel 20 located on the backplate layer 10, and a
cover-plate layer 30 located on the display panel 20.
[0077] In the present embodiment, the backplate layer 10 is made of
a corresponding flexible material that is resistant to bending, and
the backplate layer 10 can be curled into any shape.
[0078] The display panel 20 is a flexible display panel 20. The
display panel 20 may be a liquid crystal display (LCD) panel 20 or
an organic light emitting diode (OLED) display panel 20. Similar to
the backplate layer 10, the display panel 20 can be curled into any
shape.
[0079] In the present embodiment, the OLED display panel 20 is
taken as an example for description.
[0080] This display panel 20 may include an array substrate 201, a
light-emitting device layer 202 located on the array substrate 201,
and an encapsulation layer 203 located on the light-emitting device
layer 202.
[0081] The cover-plate layer 30 may include a polarizer 301 located
on the display panel 20, a cover plate 302 located on the polarizer
301, and an optical adhesive layer 303 located between the cover
plate 302 and the polarizer 301. The polarizer 301, the optical
adhesive layer 303, and the cover plate 302 are made of
corresponding flexible materials that are resistant to bending,
such that the cover-plate layer 30 can be curled into any
shape.
[0082] In the present embodiment, the flexible display screen 300
further include a touch layer.
[0083] The touch layer may be located on the encapsulation layer of
the display panel 20, or in the display panel 20, or in the
cover-plate layer 30. There is no restriction for the specific
location of the touch layer in the present application.
[0084] Please refer to FIG. 2, FIG. 2 is a structural diagram
showing a first curling type of the flexible display screen of the
present application.
[0085] Please refer to FIG. 3, FIG. 3 is a structural diagram
showing a second curling type of the flexible display screen of the
present application.
[0086] When the flexible display screen 300 is curled, the
backplate layer 10 forms a first curling portion 11, the display
panel 20 forms a second curling portion 21, and the cover-plate
layer 30 forms a third curling portion 31.
[0087] A curling direction of the first curling portion 11 is
different from a curling direction of the third curling portion 31,
a curling direction of the second curling portion 21 is same as the
curling direction of the first curling portion 11 or the curling
direction of the third curling portion 31.
[0088] In the present embodiment, the first curling portion 11 and
the third curling portion 31 are located inside the second curling
portion 21.
[0089] The backplate layer 10 is curled in the clockwise direction
or the counterclockwise direction to form the first curling portion
11. The cover-plate layer 30 is curled in the clockwise direction
or the counterclockwise direction, being different from the curling
direction of the backplate layer 10, to form the third curling
portion. The display panel 20 is curled in the clockwise direction
or the counterclockwise direction to form the third curling portion
31.
[0090] In the present embodiment, the backplate layer 10 is curled
in the counterclockwise direction to form the first curling portion
11, the cover-plate 30 is curled in the clockwise direction to from
the third curling portion 31, and the display panel 20 is curled in
counterclockwise direction to form the third curling portion
31.
[0091] In the above film layers, the curling portion curled in a
smaller radius bears greater stress. The display panel 20 has more
film layers, which results in the stress that the display panel 20
can bear is smaller the stress that the backplate layer 20 and the
cover-plate layer 30 can bear. Therefore, the display panel 20 is
curled at last in the present application. The first curling
portion 11 and the third curling portion 31 are formed before the
second curling portion 21, and there is no restriction for the
forming order of the above two curling portions in the present
application.
[0092] In the present embodiment, a circumscribed circle diameter
of the second curling portion 21 is greater than a circumscribed
circle diameter of the first curling portion 11, and the
circumscribed circle diameter of the second curling portion 21 is
greater than a circumscribed circle diameter of the third curling
portion 31.
[0093] In the present embodiment, the circumscribed circle diameter
of the second curling portion 21 is equal to the sum of the
circumscribed circle diameter of the first curling portion 11 and
the circumscribed circle diameter of the third curling portion
31.
[0094] In the present embodiment, when a thickness of the backplate
layer 10 is equal to a thickness of the cover-plate layer 30, the
circumscribed circle diameter of the first curling portion 11 is
equal to the circumscribed circle diameter of the third curling
portion 31.
[0095] Please refer to FIG. 1, the flexible display screen 300
further includes a first bonding layer 204 located between the
backplate layer 10 and the display panel 20, and a second bonding
layer 205 located between the display panel 2 and the cover-plate
layer 30.
[0096] The bonding layers are made of a material having a certain
adhesion.
[0097] In the present embodiment, the thickness of the first
bonding layer 204, and of the second bonding layer 205 are 50
microns.
[0098] When the flexible display screen 300 is expanded, the
backplate layer 10 is combined with the display panel 20 by the
first bonding layer 204, and the display panel 20 is combined with
the cover-plate layer 30 by the second bonding layer.
[0099] When the flexible display screen 300 is curled, the first
bonding layer 204 is separated from the backplate layer 10, the
second bonding layer 205 is separated from the cover-plate layer
30, the first bonding layer 204, the second bonding layer 205, and
the display panel 20 are curled in the clockwise direction or the
counterclockwise direction to form the second curling portion
21
[0100] Since the film layers structure of the display panel 20 are
relatively fine, slight scratches will reduce the quality of the
panel. When the second curling portion 21 is curled, the first
bonding layer 204 and the second bonding layer 205 are curled with
the display panel 20 to avoid scratches occurring on the display
panel 20, which ensures the stability of the display panel 20.
[0101] Please refer to FIG. 4, FIG. 4 is a structural diagram of a
third type film layer structure of the flexible display screen of
the present application.
[0102] The flexible display screen 300 further includes a third
bonding layer 101 located between the backplate layer 10 and the
first bonding layer 204, and a fourth bonding layer 304 located
between the cover-plate layer 30 and the second bonding layer
205.
[0103] When the flexible display screen 300 is expanded, the
backplate layer 10 is combined with the display panel 20 by the
first bonding layer 204 and the third bonding layer 101, and the
display panel 20 is combined with the cover-plate layer 30 by the
second bonding layer and the fourth bonding layer 304.
[0104] When the flexible display screen 300 is curled, the third
bonding layer 101 is separated from the first bonding layer 204,
the second bonding layer 205 is separated from the fourth bonding
layer 304. The backplate layer 10 and the third bonding layer 101
are curled in the clockwise direction or the counterclockwise
direction to form the first curling portion 11. The cover-plate
layer 30 and the fourth bonding layer 304 are curled in the
clockwise direction or the counterclockwise direction, being
different from the curling direction of the backplate layer 10 and
the third bonding layer 101, to form the third curling portion
31.
[0105] The combination of the first bonding layer 204 and the third
bonding layer 101, and the combination of the second bonding layer
205 and the fourth bonding layer 304 further ensure the adhesion
between the backplate layer 10, the display panel 20, and the
cover-plate layer 30.
[0106] Please refer to FIG. 2, the flexible display screen 300
further includes a fixed portion 40.
[0107] One end of the backplate layer 10, of the display panel 20,
and of the cover-plate layer 30 is connected with the fixed portion
40. When the flexible display screen 300 is curled, the backplate
layer 10, the display panel 20, and the cover-plate layer 30 are
curled from another end away from the fixed portion 40 toward the
fixed portion 40.
[0108] In the present embodiment, a processor, a driving chip, an
external port, and the likes may be disposed in the fixed
portion.
[0109] In the present embodiment, the fixed portion 40 may be a
regular cuboid.
[0110] Please refer to FIG. 2 and FIG. 3, the flexible display
screen 300 further includes a sliding portion 50.
[0111] The sliding portion 50 is disposed in parallel with the
fixed portion 40.
[0112] In the present embodiment, the sliding portion 50 may be a
regular cuboid.
[0113] In the present embodiment, the sliding portion 50 is
provided with a hollow area. The sliding portion 50 slides between
the fixed portion 40 and one end, away from the fixed portion 40,
of the flexible display screen 300 through the hollow area.
[0114] When the flexible display screen 300 is curled, the sliding
portion 50 slides from the end away from the fixed portion 40
toward the fixed portion 40, and the backplate layer 10, the
display panel 20, and the cover-plate layer 30 are curled from the
end away from the fixed portion 40 toward the fixed portion 40.
[0115] Please refer to FIG. 5, FIG. 5 is a structural diagram
showing the flexible display screen of the application in an
expanded state.
[0116] When the flexible display screen 300 is expanded, the
sliding portion 50 slides from the fixed portion 40 toward the end
away from the fixed portion 40, and the first curling portion 11,
the second curling portion 21, and the third curling portion 31 are
expended to correspondingly form the backplate layer 10, the
display panel 20, and the cover-plate layer 30.
[0117] Please refer to FIG. 6, FIG. 6 is an enlarged view of the
area A in FIG. 5.
[0118] The flexible display screen 300 further includes an engaging
area 60.
[0119] The engaging area 60 is located at an edge area of the
flexible display screen 300.
[0120] An engaging assembly 70 is disposed in the engaging area
60.
[0121] In the present embodiment, the engaging assembly 70
includes:
[0122] at least one first protrusion 701 located at one side,
adjacent to the backplate layer 10, of the display panel 20, at
least one second protrusion 702 located at one side, adjacent to
the cover-plate layer 30, of the display panel 20, at least one
first groove 703 located at one side, adjacent to the display panel
20, of the backplate layer 10, and at least one second groove 704
located at one side, adjacent to the display panel 20, of the
cover-plate layer 30.
[0123] Or at least one first groove located at one side, adjacent
to backplate layer, of the display panel, at least one second
groove located at one side, adjacent to the cover-plate layer, of
the display panel 20, at least one first protrusion located at one
side, adjacent to the display panel, of the backplate layer, and at
least one second protrusion located at one side, adjacent to the
display panel, of the cover-plate layer 30.
[0124] Please refer to FIG. 6, the first protrusion 701, the second
protrusion 702, the first groove 703, and the second groove 704 may
extend from the fixed portion 40 to one end, away from the fixed
portion 40, of the flexible display screen 300.
[0125] In the present embodiment, the backplate layer 10 may
further be provided with two and more of the first groove 703, the
cover-plate layer 30 may further be provided with two or more of
the second groove 704, and the display panel 20 may further be
provided with two or more of the first groove 703 and the second
groove 704.
[0126] In the present embodiment, in order to perform better
coordination for the backplate layer 10, the display panel 20, and
the cover-plate layer 30, the number of the first protrusion 701 is
equal to the number of the first groove 703, and the number of the
second protrusion 702 is equal to the number of the second groove
704.
[0127] When the flexible display screen 300 is expanded, the
sliding portion 50 slides from the fixed portion 40 toward one end,
away from the fixed portion 40, of the flexible display screen 300,
the sliding portion 50 realizes the engagement of the first
protrusion 701 of the display panel 20 and the first groove 703 of
the backplate layer 10, and the engagement of the second protrusion
702 of the display panel 20 and the second groove 704 of the
cover-plate layer 30.
[0128] When the flexible display screen 300 is curled, the sliding
portion 50 slides from the end, away from the fixed portion 40, of
the flexible display screen 300 toward the fixed portion 40, the
first protrusion 701 of the display panel 20 is separated from the
first groove 703 of the backplate layer 10, and the second
protrusion 702 of the display panel is separated from the second
groove 704 of the cover-plate layer 30.
[0129] In the present embodiment, there is a certain pre-tightening
force existing between the sliding portion 50, the backplate layer
10, the display panel 20, and the cover-plate layer 30.
[0130] When the flexible display screen 300 is expanded, the
sliding portion 50 slides toward one end, away from the fixed
portion 40, of the flexible display screen 300, the sliding portion
50 coordinates the first protrusion 701 and the first groove 703,
and the second protrusion 702 and the second groove 704. The
backplate layer 10, the display panel 20, and the cover-plate layer
30 are combined under the pre-tightening force of the sliding
portion 50, and a vacuum environment is formed between the
backplate layer 10, the display panel 20, and the cover-plate layer
30.
[0131] When the flexible display screen 300 is curled, the sliding
portion 50 slides toward the fixed portion 40, and the backplate
layer 10, the display panel 20, and the cover-plate layer 30 lose
the pre-tightening force.
[0132] The first protrusion 701 is separated from the first groove
703, the second protrusion 702 is separated from the second groove
704, and the backplate layer 10, the display panel 20, and the
cover-plate layer 30 correspondingly form the first curling portion
11, the second curling portion 21, and the third curling portion
31.
[0133] Please refer to FIG. 7, FIG. 7 is a first structural diagram
of a flexible display device of the present application.
[0134] The housing assembly 80 includes a first housing 81.
[0135] In the present embodiment, the first housing 81 is a hollow
housing. The first housing 81 is a rigid housing for protecting the
flexible display screen 300.
[0136] When the flexible display screen 300 is curled, the first
curling portion 11, the second curling portion 21, and the third
curling portion 31 may be placed in the first housing 81 to prevent
the display panel 20 from being scratched by an external
device.
[0137] In the present embodiment, a first opening 811 is disposed
on the one end of the first housing 81.
[0138] When the flexible display screen 300 is curled, the first
curling portion 11, the second curling portion 21, and the third
curling portion 31 enter the first housing 81 via the first opening
811.
[0139] In the present embodiment, an inscribed circle diameter of
the first housing 81 is greater than a circumscribed circle
diameter of the second curling portion 21, such that the flexible
display screen 300 can be placed in the first housing 81.
[0140] Please refer to FIG. 8, FIG. 8 is a second structural
diagram of the flexible display device of the present
application.
[0141] The housing assembly 80 further includes a second housing
82.
[0142] A second opening (not shown) is disposed on one end of the
second housing 82. The first housing 81 enters the second housing
82 via the second opening, such that the flexible display screen
300 can be further protected.
[0143] In the present embodiment, a power supply assembly is
disposed in the first housing 81 and/or in the second housing
82.
[0144] When the flexible display device 100 is in use, the flexible
display screen 300 is taken from the housing assembly 80. The first
curling portion 11, the second curling portion 21, and the third
curling portion 31 are combined by the engaging assembly 70 and the
bonding layers through the sliding portion 50, so as to form a
flexible display screen 300 in the expanded state. The flexible
display screen 300 is connected with the power supply assembly on
the housing assembly 80 by an external data line and a
corresponding port to drive the displaying pictures of the flexible
display screen.
[0145] The present application provides a flexible display device,
including a housing assembly, and a flexible display screen located
in the housing assembly. The flexible display screen includes a
backplate layer, a display panel located on the backplate layer,
and a cover-plate layer located on the display panel. When the
flexible display screen is curled, the backplate layer forms a
first curling portion, the display panel forms a second curling
portion, and the cover-plate layer forms a third curling portion.
The first curling portion and the third curling portion are located
inside the second curling portion. The present application curls
the flexible display screen by dividing the flexible display screen
into three portions, wherein the curling direction of the first
curling portion and of the third curling portion are opposite, and
the second curling portion can wrap the first curling portion and
the third curling portion. The flexible display screen is curled
into a cylinder, such that the volume of the flexible display
screen can be reduced and the flexible display screen can
convenient to carry.
[0146] In view of the above, although the present invention has
been disclosed by way of preferred embodiments, the above preferred
embodiments are not intended to limit the present invention, and
one of ordinary skill in the art, without departing from the spirit
and scope of the invention, the scope of protection of the present
invention is defined by the scope of the claims.
* * * * *