CN111864110A - Display panel - Google Patents

Display panel Download PDF

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Publication number
CN111864110A
CN111864110A CN202010685433.0A CN202010685433A CN111864110A CN 111864110 A CN111864110 A CN 111864110A CN 202010685433 A CN202010685433 A CN 202010685433A CN 111864110 A CN111864110 A CN 111864110A
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China
Prior art keywords
electrode
sub
pixel
display panel
layer
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Pending
Application number
CN202010685433.0A
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Chinese (zh)
Inventor
肖世艳
彭久红
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority to CN202010685433.0A priority Critical patent/CN111864110A/en
Publication of CN111864110A publication Critical patent/CN111864110A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/852—Arrangements for extracting light from the devices comprising a resonant cavity structure, e.g. Bragg reflector pair
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays

Abstract

The application provides a display panel, which comprises a substrate and a pixel defining layer arranged on the substrate, wherein the substrate is divided into a plurality of sub-pixel regions by the pixel defining layer, a first electrode positioned on the substrate is arranged in each sub-pixel region, a light-emitting functional layer is arranged on the first electrode, and second electrodes are arranged on the light-emitting functional layer and the pixel defining layer; in at least one of the sub-pixel regions, a distance d between the first electrode and the second electrode is: d is nxlambda/2; wherein n is a positive integer, and λ is a wavelength emitted by the sub-pixel region; the distance between the first electrode and the second electrode in the sub-pixel region is set to be n/2 times of the wavelength of light emitted in the sub-pixel region, so that the microcavity effect of the display panel emitting light in the sub-pixel region is improved, light waves resonate in the microcavity between the first electrode and the second electrode, and the color purity of the display panel is improved.

Description

Display panel
Technical Field
The present application relates to the field of display, and more particularly, to a display panel.
Background
Since an OLED (Organic Light-Emitting Diode) display device has excellent characteristics of self-luminescence, no need of a backlight source, high contrast, thin thickness, wide viewing angle, fast reaction speed, applicability to a flexible panel, wide temperature range of use, simple structure and process, etc., the OLED display device is receiving more and more attention, and the requirements for color purity and luminous efficiency of the OLED display device are also higher and more.
Disclosure of Invention
The application provides a display panel to solve the technical problem of how to improve the color purity and the luminous efficiency of the display panel.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the application provides a display panel, which comprises a substrate and a pixel defining layer arranged on the substrate, wherein the substrate is divided into a plurality of sub-pixel regions by the pixel defining layer, a first electrode positioned on the substrate is arranged in each sub-pixel region, a light-emitting functional layer is arranged on the first electrode, and second electrodes are arranged on the light-emitting functional layer and the pixel defining layer;
in at least one of the sub-pixel regions, a distance d between the first electrode and the second electrode is:
d＝n×λ/2
wherein n is a positive integer, and λ is a wavelength of light emitted by the sub-pixel region.
In the display panel provided by the present application, the display panel further includes a reflective layer disposed on the substrate and between the sub-pixel regions, and the pixel defining layer is disposed on the reflective layer.
In the display panel provided by the present application, the material of the reflective layer is the same as that of the first electrode, and the reflective layer and the first electrode are of an integrally formed structure.
In the display panel provided by the application, a rough pattern is arranged on one side surface of the reflecting layer far away from the substrate, and the rough pattern comprises a plurality of grooves and/or a plurality of bulges arranged on the reflecting layer.
In the display panel provided by the present application, a first insulating layer is disposed between the reflective layer and each of the first electrodes, the material of the first insulating layer is the same as that of the pixel defining layer, and the first insulating layer and the pixel defining layer are integrally formed.
In the display panel provided by the application, the plurality of sub-pixel regions comprise a first color sub-pixel region, a second color sub-pixel region and a third color sub-pixel region;
the distance d between the first electrode and the second electrode in the first color sub-pixel region1Comprises the following steps:
d1＝n1×λ1/2
in the second color sub-pixel region, the distance d between the first electrode and the second electrode2Comprises the following steps:
d2＝n2×λ2/2
in the third color sub-pixel region, the distance d between the first electrode and the second electrode3Comprises the following steps:
d3＝n3×λ3/2
wherein n is1、n2、n3Are all positive integers, λ1Is the wavelength, lambda, of the first color light wave2Is the wavelength, λ, of the second color light wave3The wavelength of the third color light wave.
In the display panel provided by the present application, a distance d from a portion of the reflective layer close to the first color sub-pixel region to the second electrode11Comprises the following steps:
d11＝n11×λ1/2
the distance d from the part of the reflecting layer close to the second color sub-pixel area to the second electrode22Comprises the following steps:
d22＝n22×λ2/2
the distance d from the part of the reflecting layer close to the third color sub-pixel area to the second electrode33Comprises the following steps:
d33＝n33×λ3/2
wherein n is11、n22、n33Are all positive integers, λ1Is the wavelength, lambda, of the first color light wave2Is light of a second colorWavelength of wave, λ3The wavelength of the third color light wave.
In the display panel that this application provided, still include the fingerprint identification module, be equipped with a plurality of first collimation holes on the reflection stratum, the fingerprint identification module set up in the basement is kept away from one side of reflection stratum, just the fingerprint identification module is in orthographic projection on the basement covers each first collimation hole is in orthographic projection on the basement.
In the display panel provided by the application, a plurality of second collimation holes are arranged on the first electrode, and the orthographic projection of the fingerprint identification module on the substrate covers each of the first collimation holes and the orthographic projection of each of the second collimation holes on the substrate.
In the display panel provided by the present application, the first collimating holes and/or the second collimating holes are filled with a second insulating layer, the material of the second insulating layer is the same as that of the pixel defining layer, and the second insulating layer and the pixel defining layer are an integrally formed structure.
The beneficial effect of this application: according to the display panel, the distance between the first electrode and the second electrode in the sub-pixel region is set to be n/2 times of the wavelength of light emitted in the sub-pixel region, so that the microcavity effect of the display panel emitting light in the sub-pixel region is improved, light waves resonate in the microcavity between the first electrode and the second electrode, and the color purity of the display panel is improved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic view of a first structure of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of a first cross-sectional structure taken along the line A-A in FIG. 1;
FIG. 3 is a schematic view of a second cross-sectional structure taken along the line A-A in FIG. 1;
FIG. 4 is a schematic view of a third cross-sectional structure taken along the line A-A in FIG. 1;
FIG. 5 is a second structural diagram of a display panel according to an embodiment of the present disclosure;
FIG. 6 is a schematic cross-sectional view taken along line B-B in FIG. 5;
FIG. 7 is a schematic diagram of a third structure of a display panel according to an embodiment of the present application; and
fig. 8 is a schematic cross-sectional view taken along the direction C-C in fig. 7.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The technical solution of the present application will now be described with reference to specific embodiments.
The present application provides a display panel, as shown in fig. 1 to 8, including a substrate 10 and a pixel defining layer 20 disposed on the substrate 10, where the pixel defining layer 20 divides the substrate into a plurality of sub-pixel regions 30, a first electrode 40 disposed on the substrate 10 is disposed in each sub-pixel region 30, a light emitting functional layer 50 is disposed on the first electrode 40, and second electrodes 60 are disposed on the light emitting functional layer 50 and the pixel defining layer 20;
In at least one of the sub-pixel regions 30, a distance d between the first electrode 40 and the second electrode 60 is:
d＝n×λ/2
where n is a positive integer, and λ is the wavelength of light emitted by the sub-pixel region 30.
It can be understood that since the OLED (Organic Light-Emitting Diode) display device has the excellent characteristics of self-luminescence, no need of a backlight source, high contrast, thin thickness, wide viewing angle, fast response speed, applicability to flexible panels, wide temperature range, simple structure and process, etc., and the wide attention is paid to the OLED display device, so that the requirements for color purity and light emitting efficiency of the OLED display device are higher and higher, in this embodiment, by setting the distance between the first electrode 40 and the second electrode 60 in the sub-pixel region 30 to be n/2 times of the wavelength of light emitted in the sub-pixel region 30, the microcavity effect of light emitted by the display panel in the sub-pixel region 30 is improved, light waves resonate in the microcavity between the first electrode 40 and the second electrode 60, and the color purity of the display panel is improved.
In one embodiment, as shown in fig. 1 to 8, the display panel further includes a reflective layer 70, the reflective layer 70 is disposed on the substrate 10 and between the sub-pixel regions 30, and the pixel defining layer 20 is disposed on the reflective layer 70; it can be understood that the reflective layer 70 is disposed between the sub-pixel regions 30 and on the same layer as the first electrode 40, and the light emitted from the light-emitting functional layer 50 is reflected by the reflective layer 70, which is beneficial to improving the light-emitting efficiency of the display panel and preventing part of the light from being absorbed in the panel.
Specifically, the material of the reflective layer 70 is the same as that of the first electrode 40, and the reflective layer 70 and the first electrode 40 are in an integrally formed structure, and obviously, by setting the material of the reflective layer 70 to be the same as that of the first electrode 40, and integrally forming the reflective layer 70 and the first electrode 40 through the same process, on the basis of improving the light-emitting efficiency of the display panel, the process manufacturing steps of the display panel are not increased, the direction change improves the manufacturing efficiency of the display panel, and the production cost is reduced.
In one embodiment, as shown in fig. 3 to 4, a surface of the reflective layer 70 away from the substrate 10 is provided with a rough pattern 71, the roughness pattern 71 includes a plurality of grooves 711 and/or a plurality of protrusions 712 provided on the reflective layer 70, it is understood that the roughness pattern 71 serves to increase the reflectivity of the reflective layer 70, and in this embodiment, the roughness pattern 71 includes a plurality of grooves 711 and/or a plurality of protrusions 712 provided on the reflective layer 70, the scattering power of the reflective layer 70 is increased by the plurality of grooves 711 and/or the plurality of protrusions 712, and particularly, the plurality of grooves 711 and/or the plurality of protrusions 712 may be arranged in a matrix form, and the shape of the grooves 711 and/or the protrusions 712 may be triangular, semicircular, arc-shaped, rectangular, oval, without limitation.
In one embodiment, as shown in fig. 1 to 8, a first insulating layer 80 is disposed between the reflective layer 70 and each of the first electrodes 40, the material of the first insulating layer 80 is the same as that of the pixel defining layer 20, and the first insulating layer 80 and the pixel defining layer 20 are integrally formed, it can be understood that the first insulating layer 80 is used for separating the reflective layer 70 and the first electrodes 40 to prevent the first electrodes 40 and the reflective layer 70 from short-circuiting, in this embodiment, the material of the first insulating layer 80 is set to be the same as that of the pixel defining layer 20, and the first insulating layer 80 and the pixel defining layer 20 are manufactured by the same process to be an integrally formed structure, so that the process manufacturing steps of the display panel are not added on the basis of adding functional layers such as the reflective layer 70, the direction change improves the manufacturing efficiency of the display panel and reduces the production cost.
In one embodiment, as shown in fig. 1 to 8, the plurality of sub-pixel regions 30 includes a first color sub-pixel region 31, a second color sub-pixel region 32, and a third color sub-pixel region 33;
the distance d between the first electrode 40 and the second electrode 60 in the first color sub-pixel region 31 1Comprises the following steps:
d1＝n1×λ1/2
the distance d between the first electrode 40 and the second electrode 60 in the second color sub-pixel region 322Comprises the following steps:
d2＝n2×λ2/2
a distance d between the first electrode 40 and the second electrode 60 in the third color sub-pixel region 333Comprises the following steps:
d3＝n3×λ3/2
wherein n is1、n2、n3Are all positive integers, λ1Is the wavelength, lambda, of the first color light wave2Is the wavelength, λ, of the second color light wave3The wavelength of the third color light wave; it is understood that the first color sub-pixel region 31, the second color sub-pixel region 32 and the third color sub-pixel region 33 are used for emitting light waves of different colors, the light waves of different colors have different wavelengths, in order to realize resonance of light in each of the sub-pixel regions 30 and improve the color purity of light in each of the sub-pixel regions 30, the distance between the first electrode 40 and the second electrode 60 in each of the sub-pixel regions 30 is influenced by the wavelength of light emitted in the sub-pixel region 30, therefore, the distance between the first electrode 40 and the second electrode 60 in the sub-pixel regions 30 of different colors is not different, in this embodiment, the first color sub-pixel region 31, the second color sub-pixel region 32 and the third color sub-pixel region 33 can be any combination of a red sub-pixel region, a blue sub-pixel region and a green sub-pixel region, and will not be described in detail herein.
In one embodiment, as shown in figures 2, 6 and 8,the distance d from the part of the reflective layer 70 close to the first color sub-pixel region 31 to the second electrode 6011Comprises the following steps:
d11＝n11×λ1/2
the distance d from the part of the reflective layer 70 close to the second color sub-pixel area 32 to the second electrode 6022Comprises the following steps:
d22＝n22×λ2/2
the distance d from the part of the reflective layer 70 close to the third color sub-pixel region 33 to the second electrode 6033Comprises the following steps:
d33＝n33×λ3/2
wherein n is11、n22、n33Are all positive integers, λ1Is the wavelength, lambda, of the first color light wave2Is the wavelength, λ, of the second color light wave3The wavelength of the third color light wave; it can be understood that, according to the requirement for resonance in the vicinity of the sub-pixel regions 30 with different colors, the reflective layer 70 may be divided into different portions according to the distance from the sub-pixel regions 30 with different colors, for example, a portion of the reflective layer 70 near the first color sub-pixel region 31, a portion of the reflective layer 70 near the second color sub-pixel region 32, and a portion of the reflective layer 70 near the third color sub-pixel region 33, so as to improve the resonance effect of light in the vicinity of the first color sub-pixel region 31, the second color sub-pixel region 32, and the third color sub-pixel region 33, and further improve the color purity of the display panel.
In an embodiment, as shown in fig. 6, the apparatus further includes a fingerprint identification module 100, wherein a plurality of first alignment holes 72 are disposed on the reflective layer 70, the fingerprint identification module 100 is disposed on a side of the substrate 10 away from the reflective layer 70, and an orthographic projection of the fingerprint identification module 100 on the substrate 10 covers an orthographic projection of each first alignment hole 72 on the substrate 10; it can be understood that, the existing display module with the fingerprint identification function needs to separately set the collimating aperture array, and needs to additionally add a functional layer, which not only increases the thickness of the whole module, but also increases the manufacturing cost, in this embodiment, the first collimating aperture 72 is disposed on the reflective layer 70, and the same fingerprint identification function can be achieved without additionally adding a functional layer and without affecting the whole thickness of the display panel; specifically, a plurality of the first collimating holes 72 may be arranged in an array on the reflective layer 70.
In an embodiment, as shown in fig. 8, a plurality of second alignment holes 41 are disposed on the first electrode 40, and an orthographic projection of the fingerprint identification module 100 on the substrate 10 covers the orthographic projection of each first alignment hole 72 and each second alignment hole 41 on the substrate 10, in this embodiment, a plurality of second alignment holes 41 may be further disposed on the first electrode 40 to increase an identification area of fingerprint identification, specifically, the plurality of second alignment holes 41 may be arranged in an array; specifically, the first alignment hole 72 and the second alignment hole 41 are both circular through holes.
In an embodiment, as shown in fig. 6 and 8, the first alignment hole 72 and/or the second alignment hole 41 are filled with a second insulating layer 90, the material of the second insulating layer 90 is the same as that of the pixel defining layer 20, and the second insulating layer 90 and the pixel defining layer 20 are an integral structure; it can be understood that the second insulating layer 90 is filled in the first collimating hole 72, so that the medium inside the first collimating hole 72 is uniform, and uniform propagation of light rays for fingerprint identification is facilitated, the second insulating layer 90 is filled in the second collimating hole 41, so that the first electrode 40 is prevented from being hollowed out at the second collimating hole 41, and the subsequent manufacturing of the light-emitting functional layer 50 is affected.
In summary, in the present application, by setting the distance between the first electrode 40 and the second electrode 60 in the sub-pixel region 30 to be n/2 times of the wavelength of light emitted in the sub-pixel region 30, the microcavity effect of light emitted by the display panel in the sub-pixel region 30 is improved, so that the light wave resonates in the microcavity between the first electrode 40 and the second electrode 60, and the color purity of the display panel is improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above embodiments of the present application are described in detail, and specific examples are applied in the present application to explain the principles and implementations of the present application, and the description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims (10)

1. A display panel is characterized by comprising a substrate and a pixel defining layer arranged on the substrate, wherein the pixel defining layer divides the substrate into a plurality of sub-pixel areas, a first electrode positioned on the substrate is arranged in each sub-pixel area, a light-emitting functional layer is arranged on the first electrode, and second electrodes are arranged on the light-emitting functional layer and the pixel defining layer;
In at least one of the sub-pixel regions, a distance d between the first electrode and the second electrode is:
d＝n×λ/2
wherein n is a positive integer, and λ is a wavelength of light emitted by the sub-pixel region.
2. The display panel of claim 1, further comprising a reflective layer disposed on the substrate between the sub-pixel regions, the pixel defining layer being disposed on the reflective layer.
3. The display panel according to claim 2, wherein the reflective layer is made of the same material as the first electrode, and the reflective layer and the first electrode are integrally formed.
4. The display panel according to claim 2, wherein a surface of the reflective layer on a side away from the substrate is provided with a rough pattern, and the rough pattern comprises a plurality of grooves and/or a plurality of protrusions arranged on the reflective layer.
5. The display panel according to claim 2, wherein a first insulating layer is disposed between the reflective layer and each of the first electrodes, the material of the first insulating layer is the same as that of the pixel defining layer, and the first insulating layer and the pixel defining layer are integrally formed.
6. The display panel according to claim 1, wherein the plurality of sub-pixel regions include a first color sub-pixel region, a second color sub-pixel region, and a third color sub-pixel region;
the distance d between the first electrode and the second electrode in the first color sub-pixel region1Comprises the following steps:
d1＝n1×λ1/2
in the second color sub-pixel region, the distance d between the first electrode and the second electrode2Comprises the following steps:
d2＝n2×λ2/2
in the third color sub-pixel region, the distance d between the first electrode and the second electrode3Comprises the following steps:
d3＝n3×λ3/2
wherein n is1、n2、n3Are all positive integers, λ1Is the wavelength, lambda, of the first color light wave2Is the wavelength, λ, of the second color light wave3Is a third colorThe wavelength of the light wave.
7. The display panel of claim 6, wherein the distance d from the portion of the reflective layer near the first color sub-pixel region to the second electrode11Comprises the following steps:
d11＝n11×λ1/2
the distance d from the part of the reflecting layer close to the second color sub-pixel area to the second electrode22Comprises the following steps:
d22＝n22×λ2/2
the distance d from the part of the reflecting layer close to the third color sub-pixel area to the second electrode33Comprises the following steps:
d33＝n33×λ3/2
wherein n is11、n22、n33Are all positive integers, λ1Is the wavelength, lambda, of the first color light wave 2Is the wavelength, λ, of the second color light wave3The wavelength of the third color light wave.
8. The display panel of claim 2, further comprising a fingerprint identification module, wherein the reflective layer is provided with a plurality of first alignment holes, the fingerprint identification module is disposed on a side of the substrate away from the reflective layer, and an orthographic projection of the fingerprint identification module on the substrate covers an orthographic projection of each first alignment hole on the substrate.
9. The display panel of claim 8, wherein the first electrode has a plurality of second alignment holes, and an orthographic projection of the fingerprint identification module on the substrate covers an orthographic projection of each of the first alignment holes and each of the second alignment holes on the substrate.
10. The display panel according to claim 9, wherein the first alignment holes and/or the second alignment holes are filled with a second insulating layer, the material of the second insulating layer is the same as that of the pixel defining layer, and the second insulating layer and the pixel defining layer are of an integrally molded structure.
CN202010685433.0A 2020-07-16 2020-07-16 Display panel Pending CN111864110A (en)

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CN112420787A (en) * 2020-11-09 2021-02-26 武汉华星光电半导体显示技术有限公司 Display panel, display panel manufacturing method and display device
CN112420787B (en) * 2020-11-09 2023-12-15 武汉华星光电半导体显示技术有限公司 Display panel, display panel manufacturing method and display device

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