U.S. patent application number 16/613426 was filed with the patent office on 2021-01-21 for display device.
The applicant listed for this patent is WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.. Invention is credited to Peng ZHANG.
Application Number | 20210018793 16/613426 |
Document ID | / |
Family ID | 1000005313088 |
Filed Date | 2021-01-21 |
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United States Patent
Application |
20210018793 |
Kind Code |
A1 |
ZHANG; Peng |
January 21, 2021 |
DISPLAY DEVICE
Abstract
A display device is provided, including a backlight module and a
liquid crystal display module. The backlight module is provided
with a through hole. The liquid crystal display module includes a
display panel and a lower polarizing film and an upper polarizing
film arranged on two opposite sides of the display panel. A first
via hole is in the lower polarizing film. A second via hole is in
the upper polarizing film and arranged corresponding to the first
via hole. A light shielding portion is arranged at two side edges
of the second via hole. Such configuration avoids light leakage
from the first via hole and the second via hole of the liquid
crystal display module, and improves shooting performance of the
camera module and also enhances market competitiveness.
Inventors: |
ZHANG; Peng; (Wuhan, Hubei,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD. |
Wuhan, Hubei |
|
CN |
|
|
Family ID: |
1000005313088 |
Appl. No.: |
16/613426 |
Filed: |
August 7, 2019 |
PCT Filed: |
August 7, 2019 |
PCT NO: |
PCT/CN2019/099541 |
371 Date: |
November 14, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G02F 1/133512 20130101;
G02F 2202/28 20130101; G02F 1/133514 20130101; G02F 1/1368
20130101; G02F 1/133528 20130101 |
International
Class: |
G02F 1/1335 20060101
G02F001/1335; G02F 1/1368 20060101 G02F001/1368 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 16, 2019 |
CN |
201910641484.0 |
Claims
1. A display device, comprising: a backlight module, wherein a
through hole is defined in the backlight module; a liquid crystal
display module, the liquid crystal display module comprising a
display panel and a lower polarizing film and an upper polarizing
film disposed on two opposite sides of the display panel, wherein a
first via hole is defined in the lower polarizing film; a second
via hole is defined in the upper polarizing film and arranged
corresponding to the first via hole; and a light shielding portion
is disposed at two side edges of the second via hole; a camera
module disposed in the through hole; and a light-shielding adhesive
material disposed at two side edges of the first via hole, wherein
the through hole is defined corresponding to the first via hole,
the light-shielding adhesive material extends from the first via
hole to an inner surface of a peripheral wall of the through hole;
wherein the display panel comprises a thin film transistor (TFT)
substrate, a color filter substrate, and two light-shielding
adhesive layers; the TFT substrate is disposed on the lower
polarizing film, the color filter substrate is disposed on the TFT
substrate, and the light-shielding adhesive layers are sandwiched
between the TFT substrate and the color filter substrate; wherein a
first end of each of the light-shielding adhesive layers is
disposed near the first via hole and the second via hole, and the
first end does not extend beyond the light shielding portion.
2. (canceled)
3. The display device according to claim 1, wherein the light
shielding portion is made of one of a black ultraviolet adhesive, a
black hot-melt adhesive, and black epoxy resin.
4. The display device according to claim 2, wherein the
light-shielding adhesive material is made of one of a black
ultraviolet adhesive, a black hot-melt adhesive, and black epoxy
resin.
5. The display device according to claim 1, wherein the light
shielding portion is disposed in contact with a top surface of the
display panel, and the light shielding portion is disposed in
contact with an edge portion of a peripheral wall of the second via
hole and connected to the upper polarizing film.
6. The display device according to claim 4, wherein the liquid
crystal display module further comprises an optical layer disposed
on the upper polarizing film, and the optical layer is filled in
the first via hole and covers the light shielding portion.
7. The display device according to claim 2, wherein a size of each
of the through hole, the via hole, and the second via hole is
greater than or equal to a size of the camera module.
8. The display device according to claim 2, wherein the through
hole and the first via hole together constitute an under-screen
blind hole of the display device, the camera module is a camera,
and the backlight module provides a side light source or a direct
light source.
9-20. (canceled)
Description
FIELD OF DISCLOSURE
[0001] The present invention relates to a field of display devices
and in particular, to a display device with an under-screen
camera.
DESCRIPTION OF RELATED ART
[0002] With development of liquid crystal display
technology--especially the development of full-screen technology,
there has been an increasing demand for a display device (such as a
tablet computer and a smart phone) which has an opening in the
display region and has an in-plane camera (i.e., an under-screen
camera) set therein to increase a screen ratio of the display
region. A conventional display device comprises a display panel, a
backlight module disposed under the display panel, a glass cover
disposed above the display panel, and a camera module disposed
under the glass cover. The backlight module is further provided
with a camera hole for accommodating the camera module. In
addition, upper and lower polarizing films attached to upper and
lower surfaces of the display panel are also provided with via
holes corresponding to the camera hole, so that the camera module
can shoot images through the display panel.
Problem to be Solved
[0003] Since light of the backlight module easily leaks through
edges of the via holes of the upper polarizing film and the lower
polarizing film, shooting performance and image quality of the
camera are affected.
SUMMARY
[0004] It is an objective of the present invention to provide a
display device with an under-screen camera to avoid leaking light
from edges of a first via hole and a second via hole of a liquid
crystal display module, thus improving shooting performance and
image quality of the camera module, and enhancing market
competitiveness.
[0005] Accordingly, the present invention provides a display
device. The display device comprises a backlight module, a liquid
crystal display module, and a camera module. A through hole is
defined in the backlight module. The liquid crystal display module
comprises a display panel and a lower polarizing film and an upper
polarizing film disposed on two opposite sides of the display
panel. A first via hole is defined in the lower polarizing film. A
second via hole is defined in the upper polarizing film and
arranged corresponding to the first via hole. A light shielding
portion is disposed at two side edges of the second via hole. The
camera module is disposed in the through hole.
[0006] Preferably, the display device further comprises a
light-shielding adhesive material disposed at two side edges of the
first via hole, wherein the through hole is defined corresponding
to the first via hole, the light-shielding adhesive material is
extended from the first via hole to an inner surface of a
peripheral wall of the through hole.
[0007] Preferably, the light shielding portion is made of one of a
black ultraviolet adhesive, a black hot-melt adhesive, and black
epoxy resin.
[0008] Preferably, the light-shielding adhesive material is made of
one of a black ultraviolet adhesive, a black hot-melt adhesive, and
black epoxy resin.
[0009] Preferably, the light shielding portion is disposed in
contact with a top surface of the display panel, and the light
shielding portion is disposed in contact with an edge portion of a
peripheral wall of the second via hole and connected to the upper
polarizing film.
[0010] Preferably, the liquid crystal display module further
comprises an optical layer disposed on the upper polarizing film,
and the optical layer is filled in the first via hole and covers
the light shielding portion.
[0011] Preferably, a size of each of the through hole, the via
hole, and the second via hole is greater than or equal to a size of
the camera module.
[0012] Preferably, the through hole and the first via hole together
constitute an under-screen blind hole of the display device, the
camera module is a camera, and the backlight module provides a side
light source or a direct light source.
[0013] Preferably, the display panel further comprises a thin film
transistor (TFT) substrate, a color filter substrate, and two
light-shielding adhesive layers, the TFT substrate is disposed on
the lower polarizing film, the color filter substrate is disposed
on the TFT substrate, and the light shielding adhesive layers are
sandwiched between the TFT substrate and the color filter
substrate.
[0014] Preferably, a first end of each of the light-shielding
adhesive layers is disposed near the first via hole and the second
via hole, and the first end does not extend beyond the light
shielding portion.
[0015] Preferably, the present invention provides a display device,
comprising a backlight module and a liquid crystal display module.
A through hole is defined in the backlight module. The liquid
crystal display comprises a display panel and a lower polarizing
film and an upper polarizing film disposed on two opposite sides of
the display panel. A first via hole is defined in the lower
polarizing film, a second via hole is defined in the upper
polarizing film and arranged corresponding to the first via hole,
and a light shielding portion is disposed at two side edges of the
second via hole.
[0016] The display device further comprises a camera module and a
light-shielding adhesive material, wherein the camera module is
disposed in the through hole, the light-shielding adhesive material
is disposed at two side edges of the first via hole, the through
hole is arranged corresponding to the first via hole, and the
light-shielding adhesive material is extended from the first via
hole to an inner surface of a peripheral wall of the through
hole.
[0017] Preferably, the light shielding portion is made of one of a
black ultraviolet adhesive, a black hot-melt adhesive, and black
epoxy resin.
[0018] Preferably, the light-shielding adhesive material is made of
one of a black ultraviolet adhesive, a black hot-melt adhesive, and
black epoxy resin.
[0019] Preferably, the light shielding portion is disposed in
contact with a top surface of the display panel, and the light
shielding portion is disposed in contact with an edge portion of a
peripheral wall of the second via hole and connected to the upper
polarizing film.
[0020] Preferably, the liquid crystal display module further
comprises an optical layer disposed on the upper polarizing film,
and the optical layer is filled in the second via hole and covers
the light shielding portion.
[0021] Preferably, a size of each of the through hole, the first
via hole, and the second via hole is greater than or equal to a
size of the camera module.
[0022] Preferably, the through hole and the first via hole together
constitute an under-screen blind hole of the display device, the
camera module is a camera, and the backlight module provides a side
light source or a direct light source.
[0023] Preferably, the display panel further comprises a thin film
transistor (TFT) substrate, a color filter substrate, and two
light-shielding adhesive layers, the TFT substrate is disposed on
the lower polarizing film, the color filter substrate is disposed
on the TFT substrate, and the light-shielding adhesive layers are
sandwiched between the TFT substrate and the color filter
substrate.
Advantages of the Present Invention
[0024] By placing the camera module under the display panel, a
screen ratio of the display region of the display device is
effectively increased. Accordingly, a narrow bezel design or even a
bezel-less design of the display device can be realized, and a
visual experience and visual appeal of the display device are also
improved.
BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the embodiments of the
present disclosure or related art, figures which will be described
in the embodiments are briefly introduced hereinafter. It is
obvious that the drawings are merely for the purposes of
illustrating some embodiments of the present disclosure, and a
person having ordinary skill in this field can obtain other figures
according to these figures without an inventive work.
[0026] FIG. 1 is a cross-sectional view illustrating a display
device with an under-screen camera according to the present
invention.
DETAILED DESCRIPTION OF EMBODIMENTS
[0027] Any embodiment in the following description mean that
specific features, structures, or characteristics described in
connection with the embodiment may be included in at least one
embodiment of the invention. The same terms appearing in different
places in the specification are not necessarily limited to the same
embodiment, but should be understood as independent or alternative
embodiments to other embodiments. In view of the technical
solutions disclosed in the embodiments of the present invention,
those skilled in the art should understand that the embodiments
described herein may have other combinations or modifications in
accordance with the embodiments of the present invention.
[0028] Please refer to FIG. 1. FIG. 1 is a cross-sectional view
illustrating a display device with an under-screen camera according
to the present invention. As shown in the drawing, the present
invention provides a display device 1 with an under-screen camera.
The display device 1 comprises a backlight module 11, a liquid
crystal display module 12, and a camera module 15. The display
device 1 is, but not limited to, a smart phone, an in-vehicle touch
display, an industrial control display, or other consumer display
device. The backlight module 11 can optionally provides a side
light source or a direct light source; configuration may vary as
needed. The camera module 15 is a common camera, which is a prior
art, so a detailed description thereof is not described herein.
[0029] The backlight module 11 comprises a through hole 111 defined
therein. The through hole 111 is a camera hole. The liquid crystal
display module 12 comprises a display panel 13 and a lower
polarizing film 122 and an upper polarizing film 124 disposed on
two opposite sides of the display panel 13. A first via hole 123 is
defined in the lower polarizing film 122. A second via hole 125 is
defined in the upper polarizing film 124 and arranged corresponding
to the first via hole 123. A light shielding portion 14 is disposed
(preferably, by coating) at two side edges (i.e., a periphery) of
the second via hole 125. A light-shielding adhesive material 17 is
disposed (preferably, by coating) at two side edges (i.e., a
periphery) of the first via hole 123. The camera module 15 is
disposed in the through hole 111.
[0030] The through hole 111 communicates with the first via hole
123, and the through hole 111 is arranged corresponding to the
first via hole 123. The light-shielding adhesive material 17 is
extended from the first via hole 123 to an inner surface of a
peripheral wall of the through hole 111, thus increasing a light
shielding effect. The light shielding portion 14 or the
light-shielding adhesive material 17 is made of one of a black
ultraviolet (UV) adhesive, a black hot-melt adhesive, black epoxy
resin, or other suitable material. Therefore, by using the
light-shielding adhesive material 17 disposed (preferably, by
coating) in the first via hole 123 and on the peripheral wall of
the through hole 111, and by utilizing the light shielding portion
14 disposed (preferably, by coating) on the two side edges of the
second via hole 125, light is prevented from leaking from the first
via hole 123 and the second via hole 125 of the liquid crystal
display module 12 and the through hole 111, and as a result,
shooting performance, image quality, and market competitiveness of
the camera module 15 are improved.
[0031] According to the embodiment shown in FIG. 1, the light
shielding portion 14 is disposed on a top surface of the display
panel 12, and is disposed in contact with an edge portion of a
peripheral wall of the second via hole 125 and connected to the
upper polarizing film 124. Thereby, adhesion and light shielding
ability of the light shielding portion 14 are increased.
[0032] A size of each of the through hole 111, the via hole 123,
and the second via hole 125 is greater than or equal to a size of
the camera module 15, so that the camera module 15 can be
accommodated therein. The through hole 111 and the first via hole
123 together constitute an under-screen blind hole 16 of the
display device 1, so that the camera module 15 can be disposed
below the display panel 13, and thereby, a screen ratio of the
display region of the display device 1 is effectively increased.
Accordingly, a narrow bezel design or even a bezel-less design of
the display device 1 can be realized, and a visual experience and
visual appeal of the display device 1 are improved.
[0033] The display panel 13 further comprises a thin film
transistor (TFT) substrate 131, a color filter substrate 132, and
two light-shielding adhesive layers 133. The TFT substrate 131 is
disposed on the lower polarizing film 122, the color filter
substrate 132 is disposed on the TFT substrate 131, and the two
light-shielding adhesive layers 133 are sandwiched between the TFT
substrate 131 and the color filter substrate 132. In the embodiment
shown in FIG. 1, a first end of each of the light-shielding
adhesive layers 133 is disposed near the first via hole 123 and the
second via hole 125, and the first end does not extend beyond the
light shielding portion 14.
[0034] The liquid crystal display module 12 further comprises an
optical layer 126 disposed on the upper polarizing film 124 and a
glass cover 127 disposed on the optical layer 126. In a
manufacturing process, at last, the optical layer 126 is filled in
the second via hole 125 and wraps the light shielding portion 14.
The optical layer 126 is made of an optical clear adhesive (OCA),
an optical clear resin (OCA), or other suitable material; and the
present invention is not limited in this regard. Specifically, the
optical layer 126 as shown in FIG. 1 fills the second via 125 to
bond the glass cover 127 and the color filter substrate 132 and
achieve other effects.
[0035] It is to be understood that the above descriptions are
merely the preferable embodiment of the present invention and are
not intended to limit the scope of the present invention.
Equivalent changes and modifications made in the spirit of the
present invention are regarded as falling within the scope of the
present invention.
* * * * *