U.S. patent application number 16/623121 was filed with the patent office on 2021-10-21 for display panel and display device.
This patent application is currently assigned to WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.. The applicant listed for this patent is WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.. Invention is credited to Ying Zheng.
Application Number | 20210328182 16/623121 |
Document ID | / |
Family ID | 1000005880469 |
Filed Date | 2021-10-21 |
United States Patent
Application |
20210328182 |
Kind Code |
A1 |
Zheng; Ying |
October 21, 2021 |
DISPLAY PANEL AND DISPLAY DEVICE
Abstract
The present invention relates to a display panel and a display
device. On the one hand, the display panel disposes a groove, which
forms on one side of a packaging layer of a display area away from
a substrate, and extends downward to one side of an antireflective
film facing a thin film transistor layer; and a camera is disposed
on one side of the substrate away from the thin film transistor
layer and is corresponding the groove, thereby reducing process
flow, improving productivity and yield, and realizing a full
screen. On the other hand, the present invention also adds an
antireflective film to improve the light transmittance at the
groove and avoid the phenomenon that the camera is difficult to
image.
Inventors: |
Zheng; Ying; (Wuhan,
CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY
CO., LTD. |
Wuhan |
|
CN |
|
|
Assignee: |
WUHAN CHINA STAR OPTOELECTRONICS
SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Wuhan
CN
|
Family ID: |
1000005880469 |
Appl. No.: |
16/623121 |
Filed: |
August 5, 2019 |
PCT Filed: |
August 5, 2019 |
PCT NO: |
PCT/CN2019/099249 |
371 Date: |
December 16, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L 27/3246 20130101;
H01L 27/3234 20130101; H01L 51/5253 20130101 |
International
Class: |
H01L 51/52 20060101
H01L051/52; H01L 27/32 20060101 H01L027/32 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 10, 2019 |
CN |
201910495048.7 |
Claims
1. A display panel, defining a display area and including: a
substrate; an antireflective film, being disposed on the substrate;
a thin film transistor layer, being disposed on the antireflective
film; and a packaging layer, being disposed on the thin film
transistor layer; wherein a groove is formed on one side of the
packaging layer of the display area away from the substrate, and
extends downward to one side of the antireflective film facing a
thin film transistor layer.
2. The display panel as claimed in claim 1, wherein the groove is
rectangular or inverted trapezoidal in shape.
3. The display panel as claimed in claim 1, wherein the number of
the groove is two or more.
4. The display panel as claimed in claim 1, wherein the
antireflective film is formed on the substrate by an ion beam
assisted deposition process or a chemical deposition process.
5. The display panel as claimed in claim 1, wherein the
antireflective film includes a first film, a second film and a
third film; the first film is formed on the substrate; a refractive
index of the second film to an incident light is greater than that
of the first film and the third film to the incident light, and a
refractive index of the first film to an incident light is greater
than that of the third film to the incident light.
6. The display panel as claimed in claim 5, wherein a material of
the first film is Al2O3, a material of the second film is ZrO2, and
a material of the third film is SiO2.
7. The display panel as claimed in claim 5, wherein thicknesses of
the first film, the second film and the third film are 100-300
nm.
8. The display panel as claimed in claim 5, wherein a thickness of
the first film is 110-150 nm, a thickness of the second film is
240-280 nm, and a thickness of the third film is 110-150 nm.
9. The display panel as claimed in claim 1, wherein further
including: anodes, being arranged at interval on the thin film
transistor layer; a pixel definition layer, being disposed on the
thin film transistor layer and located between two adjacent anodes;
a light emitting layer, being disposed on the anodes and the pixel
definition layer; and a cathode, being disposed on the light
emitting layer; wherein the packaging layer is disposed on the
cathode.
10. A display device, comprising a display panel and a camera
located under the display panel; wherein the display panel is the
display panel as claimed in claim 1, and the camera is disposed
under the display panel and is corresponding to the groove.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present disclosure relates to a display technical field,
and more particularly to a display panel and a display device.
2. Description of the Prior Art
[0002] An OLED (Organic Light-Emitting Diode) device is also called
an organic electro-laser display device and an organic
light-emitting semiconductor. The basic structure of the OLED is a
sandwich-like structure constructed by a thin transparent indium
tin oxide (ITO) with semiconductor properties connected to an anode
of a power and a metal surface cathode. The whole structure
includes a hole transport layer (HTL), an electroluminescent layer
(EL) and an electron transport layer (ETL). When the power is
supplied to an appropriate voltage, holes of the anode and
electrons of the surface cathode will combine in the
electroluminescent layer, and form excitons (electron-hole pairs)
in an excited state with a certain probability under the action of
a Coulomb force. But the excited state is unstable in normal
environment. The exciton combination in the excited state can
transfer energy to the luminescent material. It can enable the
luminescent material to transition from a ground state to the
excited state. The energy of the excited state can produce photons
through radiation relaxation process; the photons release light
energy and produce brightness. According to its formula, it
produces three basic colors (RGB): red, green and blue, which
constitute the basic color.
[0003] First of all, the OLED is characterized by
self-luminescence. The OLED is unlike a thin film transistor-liquid
crystal display device, which requires backlight, so the visibility
and brightness of the OLED are high. Secondly, the OLED has the
advantages of low voltage demand, high power saving efficiency,
fast response, light weight, thin thickness, simple structure, low
cost, wide viewing angle, almost infinitely high contrast, low
power consumption and high reaction speed. It has become one of the
most important display technologies nowadays. It is gradually
replacing TFT-LCD and is expected to become the next generation of
mainstream display technology after LCD.
BRIEF SUMMARY OF THE INVENTION
Technical Problem
[0004] Because the OLED is easy to customize its appearance, more
and more terminal manufacturers are applying it to a full screen
and borderless product. But the full screen and borderless product
requires a larger luminous area. Therefore, in the actual
application, a flexible organic light-emitting display usually
requires to dispose installation holes for reserving hardware
installation locations such as a front-facing camera, an earphone
and a start key on a terminal device. At present, the installation
holes are generally disposed in a non-display area outside an
effective display area of the display panel. In this way, the area
of the effective display area is limited, and the full screen
cannot be prepared. Hence, it needs to seek a new display panel and
a new display device to solve the above problems.
Technical Solutions
[0005] One object of the present invention is to provide a display
panel and a display device, which can solve the problems that the
existed display panel restricts the display area and cannot realize
a full screen.
[0006] In order to solve the above problems, in one embodiment, the
present invention provides a display panel, defining a display area
and including a substrate, an antireflective film, a thin film
transistor layer and a packaging layer. Wherein, the antireflective
film is disposed on the substrate; the thin film transistor layer
is disposed on the antireflective film; and the packaging layer is
disposed on the thin film transistor layer. Wherein a groove is
formed on one side of the packaging layer of the display area away
from the substrate, and extends downward to one side of the
antireflective film facing a thin film transistor layer.
[0007] Further, wherein the groove is rectangular or inverted
trapezoidal in shape.
[0008] Further, wherein the number of the groove is two or
more.
[0009] Further, wherein the antireflective film is formed on the
substrate by an ion beam assisted deposition process or a chemical
deposition process.
[0010] Further, wherein the antireflective film includes a first
film, a second film and a third film; the first film is formed on
the substrate; a refractive index of the second film to an incident
light is greater than that of the first film and the third film to
the incident light, and a refractive index of the first film to an
incident light is greater than that of the third film to the
incident light.
[0011] Further, wherein a material of the first film is Al2O3, a
material of the second film is ZrO2, and a material of the third
film is SiO2.
[0012] Further, wherein all of thicknesses of the first film, the
second film and the third film are 100-300 nm.
[0013] Further, wherein a thickness of the first film is 110-150
nm, a thickness of the second film is 240-280 nm, and a thickness
of the third film is 110-150 nm.
[0014] Further, wherein the display panel further includes: anodes,
a pixel definition layer, a light emitting layer and a cathode.
Wherein, the anodes are arranged at interval on the thin film
transistor layer; the pixel definition layer is disposed on the
thin film transistor layer and located between two adjacent anodes;
the light emitting layer is disposed on the anodes and the pixel
definition layer; and the cathode is disposed on the light emitting
layer. Wherein, the packaging layer is disposed on the cathode.
[0015] In another embodiment, the present invention further
provides a display device, comprising a display panel and a camera
located under the display panel; wherein the display panel is
provided by the present invention, and the camera is disposed under
the display panel and is corresponding to the groove.
Beneficial Effect
[0016] The present invention relates to the display panel and the
display device. On the one hand, the groove forms on one side of
the packaging layer of the display area away from the substrate,
and extends downward to one side of the antireflective film facing
the thin film transistor layer; and the camera is disposed on one
side of the substrate away from the thin film transistor layer and
is corresponding the groove, thereby reducing process flow,
improving productivity and yield, and realizing the full screen. On
the other hand, the present invention also adds the antireflective
film to improve the light transmittance at the groove and avoid the
phenomenon that the camera is difficult to image.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] For more clearly illustrating the technical scheme in the
embodiment of the present invention, the following text will
briefly introduce the accompanying drawings used in the embodiment.
It is obvious that the accompanying drawings in the following
description are only some embodiments of the present invention. For
the technical personnel of the field, other drawings can also be
obtained from these drawings without paying creative work.
[0018] FIG. 1 is a structure schematic view of a display panel of
the present invention;
[0019] FIG. 2 is a structure schematic view of a display device of
the present invention; and
[0020] FIG. 3 is a plan view of the display panel of the present
invention.
[0021] The components in the figure are identified as follows:
TABLE-US-00001 100 display panel 200 camera 1 substrate 2
antireflective film 3 thin film transistor layer 4 anode 5 pixel
definition layer 6 light emitting layer 7 cathode 8 packaging layer
9 groove 11 first underlayer 12 intermediate layer 13 second
underlayer 21 first film 22 second film 23 third film
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0022] The preferred embodiments of the present invention are
described in detail below with reference to the accompanying
drawings, in order to fully introduce the technical contents of the
present invention to the technical personnel in the field, and to
demonstrate with examples that the present invention can be
implemented, so as to make the technical contents of the present
invention clearer and make it easier for the technical personnel in
the field to understand how to implement the present invention.
However, the present invention can be embodied by many different
forms of embodiments. The protection scope of the present invention
is not limited to the embodiments mentioned herein, and the
description of the following embodiments is not intended to limit
the scope of the present invention.
[0023] Directional terms mentioned in the present invention, such
as "top", "bottom", "front", "back", "left", "right", "inner",
"outer", "side" etc., are only used with reference to the
orientation of the accompanying drawings. The directional terms
used herein are intended to explain and illustrate, but not to
limit, the protection scope of present invention.
[0024] In the figures, units with similar structures are
represented by the same label. Components with similar structures
or functions everywhere are represented by similar numeric labels.
In addition, for ease of understanding and description, the size
and thickness of each component shown in the drawings are
arbitrarily shown, and the present invention does not limit the
size and thickness of each component.
[0025] When one component is described as "on another component",
the component may be directly placed on another component; or there
exists an intermediate component, the component is placed on the
intermediate component, and then the intermediate component is
placed on another component. Moreover, when one component is
described as "installed to" or "connected to" another component,
they can be understood as "installed" or "connected" directly; or
they can be understood that one component is "installed to" or
"connected to" another component through an intermediate
component.
Embodiment 1
[0026] Referring to FIG. 1, a display panel 100 defines a display
area, and includes a substrate 1, an antireflective film 2, a thin
film transistor layer 3, anodes 4, a pixel definition layer 5, a
light emitting layer 6, a cathode 7 and a packaging layer 8.
[0027] Wherein, the substrate 1 includes a first underlayer 11, an
intermediate layer 12 and a second underlayer 13. The thicknesses
of the first underlayer 11 and the second underlayer 13 are 6-10
microns (.mu.m). If the thicknesses of the first underlayer 11 and
the second underlayer 13 are less than 6 .mu.m, the production cost
thereof will increase due to production process problems. If the
thicknesses of the first underlayer 11 and the second underlayer 13
are greater than 10 .mu.m, the overall thickness of the display
panel 100 will increase, which affects the beauty of the product
and the feel of the use. The material of the first underlayer 11
and the second underlayer 13 can be polyimide, and the first
underlayer 11 and the second underlayer 13 made from the polyimide
have good flexibility. The material of the intermediate layer 12
may be SiO2 or SiNx, or a laminated structure of SiO2 and SiNx. The
prepared intermediate layer 12 has good water and oxygen resistance
and can also improve the reliability between the first underlayer
11 and the second underlayer 13.
[0028] Wherein the thin film transistor layer 3 is disposed on the
substrate 1, the antireflective film 2 is disposed between the
substrate 1 and the thin film transistor layer 3. The
antireflective film 2 includes a first film 21, a second film 22
and a third film 23. Wherein the first film 21 is disposed on the
substrate 1, the second film 22 is disposed on the first film 21,
and the third film 23 is disposed on the second film 22. The
antireflective film 2 can be formed on the substrate 1 by an ion
beam assisted deposition process or a chemical deposition
process.
[0029] Wherein, a refractive index of the second film 22 to an
incident light is greater than that of the first film 21 and the
third film 23 to the incident light, and a refractive index of the
first film 21 to an incident light is greater than that of the
third film 23 to the incident light. Specifically, a material of
the first film 21 is Al2O3, a material of the second film 22 is
ZrO2, and a material of the third film 23 is SiO2. Thus, the
transmittance of the display panel 100 can be effectively improved
by using the three-layer anti-reflection film structure of
.lamda./4-.lamda./2-2.lamda./4. In addition, the antireflective
film 2 can also provide a good water oxygen barrier effect, to
avoid an abnormal display of the display area of the light emitting
layer 6 caused by water vapor intrusion.
[0030] Wherein, thicknesses of the first film 21, the second film
22 and the third film 23 are 100-300 nm. Specifically, the
thickness of the first film 21 is 110-150 nm, the thickness of the
second film 22 is 240-280 nm, and the thickness of the third film
23 is 110-150 nm. Thus, the transmittance can be increased and
achieve the best effect.
[0031] Wherein, the anodes 4 are arranged at interval on the thin
film transistor layer 3; the pixel definition layer 5 is disposed
between two adjacent anodes 4 on the thin film transistor layer 3;
the light emitting layer 6 is disposed on the anodes 4 and the
pixel definition layer 5; the cathode 7 is disposed on the light
emitting layer 6; and the packaging layer 8 is disposed on the
cathode 7.
[0032] The display panel 100 of the embodiment disposes a groove 9,
which forms on one side of the packaging layer 8 of the display
area away from the substrate 1, and extends downward to one side of
the antireflective film 2 facing the thin film transistor layer 3.
The groove 9 can be rectangular or inverted trapezoidal in shape.
In the embodiment, the groove 9 is rectangular in shape. In the
actual production, according to the actual demand, the number of
the groove 9 can be increased to two or more. In the embodiment, by
setting the groove 9 in the display area of the display panel 100,
the display area can be increased and the full screen can be
achieved.
Embodiment 2
[0033] The differences between the second embodiment and the first
embodiment are explained below, and their similarities are not
repeated here.
[0034] Referring to FIG. 2, the embodiment further provides a
display device, which includes the display panel 100 of the present
invention and a camera 200 located under the display panel 100. The
camera 200 is located under the display panel 100 and is
corresponding to the groove 9. Thus, the display area can be
increased and the full screen can be achieved.
[0035] Specifically, a projection area of the groove 9 in the
display panel 100 can be larger than that of the camera 200, so as
to increase a lighting area of the camera 200, improve an imaging
effect of the camera 200 and increase a customer experience.
[0036] As shown in FIG. 3, in the actual production, the number of
the groove 9 can be increased to two or more. The grooves 9 are
arranged to form an open area shown by dotted lines in the drawing.
The camera 200 is corresponding to the open area, thereby achieving
the same display effect, increasing the display area, and achieving
the full screen effect.
[0037] The display panel and the display device provided by the
present invention are described in detail above. It should be
understood that the exemplary embodiments described herein should
be considered descriptive only to help understand the methods and
core ideas of the invention, and not to limit the invention. The
description of features or aspects in each exemplary embodiment
should generally be considered to be applicable to similar features
or aspects in other exemplary embodiments. Although the present
invention is described with reference to exemplary embodiments,
various changes and modifications may be recommended by those
skilled in the art. The present invention intends to cover these
changes and changes within the scope of the appended claims. Any
modification, equivalent replacement and improvement made within
the spirit and principles of the present invention shall be
included in the scope of protection of the present invention.
* * * * *