WO2020169015A1

WO2020169015A1 - Display panel manufacturing method and display panel

Info

Publication number: WO2020169015A1
Application number: PCT/CN2020/075650
Authority: WO
Inventors: 李柯远; 张玮志; 于瑶瑶
Original assignee: 京东方科技集团股份有限公司; 绵阳京东方光电科技有限公司
Priority date: 2019-02-19
Filing date: 2020-02-18
Publication date: 2020-08-27
Also published as: CN109686245B; CN109686245A

Abstract

A display panel manufacturing method and a display panel. The display panel manufacturing method comprises: obtaining a color cast state of the display panel in a side view angle (S1); and according to the color cast state of the display panel in the side view angle, doping a light-absorbing material (5) corresponding to the color cast state in a pixel limiting layer (2) of the display panel and/or a support column layer (4) on the pixel limiting layer (2) (S2). Therefore, the color cast problem of the display panel in the side view angle is eliminated without needing to add any structural layers.

Description

Display panel manufacturing method and display panel

Cross references to related applications

This application claims the rights and interests of the Chinese patent application CN201910121360.X filed on February 19, 2019, the entire content of which is incorporated herein by reference.

Technical field

The embodiments of the present disclosure relate to the field of display technology, and in particular, to a method for manufacturing a display panel and a display panel.

Background technique

The display panel generally includes pixel units distributed in an array, and each pixel unit includes multiple sub-pixel units, such as red sub-pixel units, green sub-pixel units, and blue sub-pixel units. Each sub-pixel unit emits light of its corresponding color. When the viewing angle of the display panel is changed from small to large, the light emitted by different sub-pixel units has different attenuation, which will cause the display panel to have a color shift in the lateral viewing angle, for example, when the side of the mobile phone user is large When viewing an OLED screen from a viewing angle, the screen will have a color deviation, and the uniformity of the light will be reduced, showing a bias toward blue light, yellow light or red light.

Public content

According to an aspect of an embodiment of the present disclosure, there is provided a method for manufacturing a display panel, including:

Obtain the color shift state of the display panel in the lateral viewing angle;

According to the color shift state of the display panel under the lateral viewing angle, the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer is doped with light absorption corresponding to the color shift state material.

In some exemplary embodiments of the present disclosure, acquiring the color shift state of the display panel in a lateral viewing angle includes:

Detecting the color shift state of a finished display panel manufactured under the same process as the display panel but not doped with light-absorbing materials under a lateral viewing angle;

Obtain the color shift state of the display panel under the lateral viewing angle according to the color shift state of the finished display panel under the lateral viewing angle.

In some exemplary embodiments of the present disclosure, detecting the color shift state of a finished display panel manufactured under the same process as the display panel but not doped with light-absorbing material under a lateral viewing angle includes:

Driving the finished display panel to emit white light;

Acquiring the light-emitting state of the finished display panel at a viewing angle of a predetermined angle, so as to determine the color shift state of the finished display panel;

Wherein, the preset angle is the angle between the line of sight and the normal of the finished display panel, which is greater than a threshold angle.

In some exemplary embodiments of the present disclosure, according to the color shift state of the display panel under the lateral viewing angle, the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer are doped The light-absorbing materials corresponding to the color shift state include:

When the color shift state of the display panel is reddish light, a red light absorbing material is doped in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer.

When the color shift state of the display panel is greenish light, a green light absorbing material is doped in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer.

When the color shift state of the display panel is partial to blue light, a blue light absorbing material is doped in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer.

In some exemplary embodiments of the present disclosure, doping the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer with a light-absorbing material corresponding to the color shift state includes:

Doping the light-absorbing material into the material of the pixel defining layer to be formed to form a first light-absorbing mixture;

Forming the first light-absorbing mixture into the pixel defining layer; and/or,

Doping the light-absorbing material into the material of the supporting column layer to be formed to form a second light-absorbing mixture;

The second light-absorbing mixture is formed into the supporting pillar layer.

In some exemplary embodiments of the present disclosure, the mass concentration of the light-absorbing material in the first light-absorbing mixture is 0.05%-0.15%; and/or,

The mass concentration of the light-absorbing material in the second light-absorbing mixture is 0.05%-0.15%.

In some exemplary embodiments of the present disclosure, the color shift state includes information about which color the color of the emitted light is biased, and the light-absorbing material corresponding to the color shift state refers to the state of the light-absorbing material against the color shift. The light absorption capacity of the one color to which it is biased is stronger than the absorption capacity of other light.

In some exemplary embodiments of the present disclosure, the red light absorbing material includes cadmium telluride.

In some exemplary embodiments of the present disclosure, the blue light absorbing material includes Lotsorb adsorbent.

In some exemplary embodiments of the present disclosure, the light-absorbing material is doped into the pixel defining layer and/or the supporting pillar layer on the pixel defining layer by melting or melting.

In some exemplary embodiments of the present disclosure, the threshold angle is any angle between 70° and 80°.

According to an aspect of the present disclosure, there is provided a display panel including:

TFT circuit layer;

The pixel defining layer is located on the TFT circuit layer;

The light-emitting layer is located in the opening of the pixel defining layer,

Wherein, the pixel defining layer is doped with a light absorbing material, and the light absorbing material is used to absorb part of the light emitted from the light emitting layer to the pixel defining layer.

In some exemplary embodiments of the present disclosure, the light absorbing material is a red light absorbing material, a green light absorbing material, or a blue light absorbing material.

In some exemplary embodiments of the present disclosure, the light-absorbing material includes cadmium telluride or Lotsorb adsorbent.

In some exemplary embodiments of the present disclosure, the mass concentration of the light-absorbing material in the mixture of the pixel defining layer material and the light-absorbing material is 0.05%-0.15%.

TFT circuit layer;

The pixel defining layer is located on the TFT circuit layer;

A support column layer, the support column layer is arranged on the pixel defining layer and used to support the mask;

The light-emitting layer is located in the opening of the pixel defining layer,

Wherein, the pixel defining layer and/or the supporting column layer is doped with a light-absorbing material, and the light-absorbing material is used to absorb a part of light emitted from the light emitting layer to the pixel defining layer and the supporting column layer.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.

Description of the drawings

The drawings herein are incorporated into the specification and constitute a part of the specification, show embodiments of the disclosure, and together with the specification are used to explain the principle of the disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic diagram of a part of the structure of a display panel in the related art;

2 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present disclosure;

Figure 3 shows the absorption spectra of cadmium telluride under different particle radii;

Figure 4 shows the transmittance diagrams of different wavelengths of light under three Lotsorb adsorbents;

FIG. 5 is a schematic diagram of a part of the structure of a display panel according to an embodiment of the present disclosure; and

FIG. 6 is a schematic diagram of a part of the structure of a display panel according to an embodiment of the present disclosure.

detailed description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms, and should not be construed as being limited to the examples set forth herein; on the contrary, the provision of these embodiments makes the present disclosure more comprehensive and complete, and fully conveys the concept of the example embodiments To those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed descriptions will be omitted.

Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship between one component in the figure and another component, these terms are used in this specification only for convenience, for example, according to the drawings. The direction of the example described in. It can be understood that if the device in the figure is turned over and turned upside down, the components described as "upper" will become "lower" components. Other relative terms, such as "high", "low", "top", "bottom", "left", "right", etc. have similar meanings. When a structure is “on” another structure, it may mean that a certain structure is integrally formed on another structure, or that a certain structure is “directly” arranged on another structure, or that a certain structure is “indirectly” arranged on another structure through another structure. On other structures.

The terms "a", "a", "the" are used to indicate the presence of one or more elements/components/parts, etc.; the terms "including" and "have" are used to indicate the open-ended meaning of including and refer to In addition to the listed elements/components/parts, etc., there may be additional elements/components/parts, etc.

The purpose of the embodiments of the present disclosure is to provide a method for manufacturing a display panel and a display panel. The display panel manufacturing method and the display panel manufactured by the display panel solves the color shift phenomenon of the display panel under the lateral viewing angle without increasing the thickness of the display panel. In the present disclosure, the color shift phenomenon refers to the deviation of the color of the light emitted from the display panel, which is biased toward light of a certain color.

As shown in FIG. 1, it is a schematic diagram of a part of the structure of a display panel in the related art. The display panel may include a pixel defining layer 2 formed on the TFT circuit layer 1, and a light emitting layer 3 is formed in the opening of the pixel defining layer 2. A support column layer 4 (PS layer, Post Spacer layer) is also formed above the pixel defining layer 2. The support column layer 4 is used to support the mask, so as to avoid the mask and the to-be-formed layer when the film is formed on the pixel defining layer. The film is in direct contact. In the related art, part of the light emitted by the light-emitting layer 3 propagates in the direction shown by the arrow in FIG. 1. It can be seen from FIG. 1 that most of the light obtained under the lateral viewing angle of the display panel passes through the pixel limiting layer and/or pixel limiting layer. The supporting column layer on the layer, or the supporting column layer refracting on the pixel defining layer and/or the pixel defining layer.

Based on this, the exemplary embodiment of the present disclosure first provides a method for manufacturing a display panel, as shown in FIG. 2, which is a flowchart of the method for manufacturing a display panel according to an embodiment of the present disclosure. The method includes:

Step S1: Obtain the color shift state of the display panel in the lateral viewing angle;

Step S2: According to the color shift state of the display panel under the lateral viewing angle, doping in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer is in accordance with the color shift state. The corresponding light-absorbing material.

The embodiment of the present disclosure proposes a method for manufacturing a display panel. The method for manufacturing the display panel is performed in a pixel defining layer of the display panel and/or a support pillar layer on the pixel defining layer according to the color shift state of the display panel Doping with a light-absorbing material corresponding to the color shift state. On the one hand, the present disclosure absorbs light corresponding to the color shift state of the display panel through the light-absorbing material doped in the pixel defining layer and/or the support column layer, thereby eliminating the color shift problem of the display panel under the lateral viewing angle; Therefore, the manufacturing method of the display panel provided by the present disclosure does not require any additional structural layers, and does not increase the thickness of the display panel.

In the embodiments of the present disclosure, the color shift state refers to which color the color of the emitted light of the display panel is biased, and the light-absorbing material corresponding to the color shift state refers to the color shift state of the light-absorbing material. The light absorption capacity of one color is stronger than the absorption capacity of other light.

In this exemplary embodiment, according to the color shift state of the display panel under the lateral viewing angle, the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer is doped with the color shift. The light-absorbing material corresponding to the state may include: when the color shift state of the display panel is reddish light, red doping in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer Light absorbing material. When the color shift state of the display panel is greenish light, a green light absorbing material is doped in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer. When the color shift state of the display panel is partial to blue light, a blue light absorbing material is doped in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer. The red light absorbing material can be cadmium telluride (CdTe), as shown in Figure 3, which is the absorption spectrum of cadmium telluride under different particle radii, where ah represents the light absorption intensity of cadmium telluride under different particle radii, where The wavelength range of red light is 640-780nm, the wavelength range of green light is 505-525nm, and the wavelength range of blue light is 407-505nm. According to Figure 3, it can be seen that cadmium telluride has a strong absorption effect on red light. The absorption effect of blue and green light is weak, so cadmium telluride can be used as a red light absorbing material. The blue light absorbing material can be Lotsorb adsorbent, and Lotsorb can choose any of Lotsorb b FV-100 (1mm, PC), Lotsorb b-800 (2mm, PC), Lotsorb b-800 (1mm, PC). As shown in Figure 4, the light penetration of different wavelength bands under Lotsorb b FV-100 (1mm, PC), Lotsorb b-800 (2mm, PC), Lotsorb b-800 (1mm, PC) Over rate graph. It can be seen from Figure 4 that the Lotsorb adsorbent has a small transmittance to blue light and a large transmittance to red and green light. Therefore, Lotsorb adsorbent can be used as a blue light absorbing material.

In this exemplary embodiment, doping the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer with the light-absorbing material corresponding to the color shift state may include: The material of the pixel defining layer is doped with the light-absorbing material to form a first light-absorbing mixture; the first light-absorbing mixture is formed into the pixel defining layer; and/or in the material of the supporting pillar layer to be formed Doping the light absorbing material to form a second light absorbing mixture; and forming the second light absorbing mixture to form the support column layer. Wherein, doping the light-absorbing material into the material of the pixel defining layer to be formed to form the first light-absorbing mixture can uniformly dope the light-absorbing material into the material of the pixel defining layer by melting or melting; The material of the supporting column layer is doped with the light-absorbing material to form the second light-absorbing mixture. The light-absorbing material can also be uniformly doped into the material of the supporting column layer by melting or melting. It should be understood that in other exemplary embodiments, the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer may be doped with a light-absorbing material corresponding to the color shift state. There are more ways, all of which fall within the protection scope of this disclosure.

In the embodiments of the present disclosure, materials prepared by melting/melting light-absorbing materials such as CdTe and Lotsorb adsorbents with PI glue absorb pixel light, increase the uniformity of light output, and make the light intensity attenuation of pixels of different colors uniform, thereby eliminating the display panel side The color cast problem under the viewing angle. The embodiment of the present disclosure does not use a grating to reduce the color shift phenomenon, but uses a method of melting/melting the light-absorbing material and PI glue to improve the large viewing role shift phenomenon, and therefore does not increase the thickness of the display panel.

In this exemplary embodiment, obtaining the color shift state of the display panel under the lateral viewing angle needs to be inspected after the display panel is finished. However, forming the pixel defining layer is a necessary step for manufacturing the display panel. In this exemplary embodiment, acquiring the color shift state of the display panel under the lateral viewing angle may include: detecting the color shift state of the finished display panel under the same process as the display panel under the lateral viewing angle; displaying according to the finished product The color shift state of the panel under the lateral viewing angle is obtained to obtain the color shift state of the display panel under the lateral viewing angle. Wherein, detecting the color shift state of a finished display panel under the same process as the display panel under a lateral viewing angle may include: driving the finished display panel to emit white light; obtaining the finished display panel at a viewing angle of a preset angle To determine the color shift state of the finished display panel. For example, if the light emitting state of the finished display panel is obtained as red light at a viewing angle of a preset angle, it can be determined that the color shift state of the finished display panel is reddish light. Wherein, the preset angle is greater than a threshold angle. The threshold angle is a limit angle for detecting the color shift state of the display panel. Different display panels have different threshold angles during color shift detection. For example, the threshold angle may be 70°, 80°, and so on.

In this exemplary embodiment, only the light-absorbing material may be doped in the pixel defining layer, or only the light-absorbing material may be doped in the supporting pillar layer, or the light-absorbing material may be doped in the pixel defining layer and the supporting pillar layer at the same time. In this exemplary embodiment, the doping mode of the light-absorbing material during the manufacture of the display panel can be obtained through an experimental method. For example, in this exemplary embodiment, only the pixel defining layer may be doped with light-absorbing materials, and the color shift state of the finished display panel may be detected. If the finished display panel still has color shift, the pixel defining layer and the supporting column layer may be At the same time doped with light-absorbing materials.

In this exemplary embodiment, the mass concentration of the light-absorbing material will affect the light-absorbing effect of the pixel defining layer and/or the supporting pillar layer. Doping the pixel defining layer and/or the supporting column layer with an appropriate mass concentration of light-absorbing material can eliminate the color shift of the display panel. The mass concentration of the light-absorbing material can be obtained through multiple experiments. In this exemplary embodiment, the mass concentration of the light-absorbing material in the first light-absorbing mixture may be 0.05%-0.15%; the mass concentration of the light-absorbing material in the second light-absorbing mixture may be 0.05%- 0.15%.

The embodiments of the present disclosure also provide a display panel corresponding to the foregoing display panel manufacturing method, and FIGS. 5-6 respectively show the display panels according to the embodiments of the present disclosure.

As shown in FIG. 5, the display panel includes: a TFT circuit layer 1; a pixel defining layer 2 located on the TFT circuit layer 1; a light emitting layer 3 located in an opening of the pixel defining layer 2, wherein the pixel defining layer 2 The light-absorbing material 5 is doped with light-absorbing material 5 for absorbing part of the light emitted from the light-emitting layer 3 to the pixel defining layer 2. Part of the light emitted by the light-emitting layer 3 propagates in the direction shown by the arrow in Figure 5. It can be seen from Figure 5 that the light of a specific color is absorbed by the light-absorbing material in the pixel defining layer 2 without passing through the pixel defining layer 2. In the lateral viewing angle of the display panel, the color cast is suppressed.

Among them, the light absorbing material 5 may be a red light absorbing material, a green light absorbing material or a blue light absorbing material. Corresponding to the above display panel manufacturing method, the light-absorbing material may include cadmium telluride or Lotsorb adsorbent, and the mass concentration of the light-absorbing material in the mixture of the pixel defining layer material and the light-absorbing material is 0.05%-0.15%. The display panel of the present disclosure can be manufactured by the above-mentioned display panel manufacturing method. The display panel has the same technical features and working principles as the above-mentioned display panel manufacturing method. The above content has been described in detail and will not be repeated here.

This exemplary embodiment also provides a display panel, the display panel including a pixel defining layer and a supporting pillar layer on the pixel defining layer, the pixel defining layer and/or the supporting pillar layer are doped with Light-absorbing material. Specifically, as shown in FIG. 6, the display panel includes: a TFT circuit layer 1; a pixel defining layer 2 located on the TFT circuit layer 1; a supporting pillar layer 4 used to support a mask; a light emitting layer 3 located on the pixel In the opening of the defining layer 2, wherein the pixel defining layer 2 and the supporting pillar layer 4 are doped with a light absorbing material 5, and the light absorbing material 5 is used for absorbing the light emitting layer to the pixel defining layer 2 and the supporting pillar layer 4 part light. Part of the light emitted by the light-emitting layer 3 propagates in the direction shown by the arrow in Fig. 6. It can be seen from Fig. 6 that the light of a specific color is absorbed by the light-absorbing material in the pixel defining layer 2 and the supporting column layer 4 without passing through the pixel defining The layer 2 and the supporting column layer 4, therefore, suppress the color shift phenomenon under the lateral viewing angle of the display panel.

The display panel of the present disclosure can be manufactured by the above-mentioned display panel manufacturing method. The display panel has the same technical features and working principles as the above-mentioned display panel manufacturing method. The above content has been described in detail and will not be repeated here.

The embodiment of the present disclosure proposes a display panel in which a pixel defining layer of the display panel and/or a support pillar layer on the pixel defining layer is doped with a light-absorbing material corresponding to a color shift state. On the one hand, the present disclosure absorbs light corresponding to the color shift state of the display panel through the light-absorbing material doped in the pixel defining layer and/or the support column layer, thereby eliminating the color shift problem of the display panel under the lateral viewing angle; Therefore, the display panel provided by the present disclosure does not need to add any additional structural layers, and does not increase the thickness of the display panel.

Those skilled in the art will easily think of other embodiments of the present disclosure after considering the embodiments disclosed in the specification. This application is intended to cover any variations, uses, or adaptive changes of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The description and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the claims.

It should be understood that the present disclosure is not limited to the precise structure that has been described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

A method for manufacturing a display panel includes:

Obtain the color shift state of the display panel in the lateral viewing angle;

According to the color shift state of the display panel under the lateral viewing angle, the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer is doped with light absorption corresponding to the color shift state material.
The manufacturing method of the display panel according to claim 1, wherein obtaining the color shift state of the display panel in a lateral viewing angle comprises:

Detecting the color shift state of a finished display panel manufactured under the same process as the display panel but not doped with light-absorbing materials under a lateral viewing angle;

Obtain the color shift state of the display panel under the lateral viewing angle according to the color shift state of the finished display panel under the lateral viewing angle.
4. The method for manufacturing a display panel according to claim 2, wherein detecting the color shift state of a finished display panel manufactured under the same process as the display panel but not doped with light-absorbing material under a lateral viewing angle comprises:

Driving the finished display panel to emit white light;

Acquiring the light-emitting state of the finished display panel at a viewing angle of a predetermined angle, so as to determine the color shift state of the finished display panel;

Wherein, the preset angle is the angle between the line of sight and the normal of the finished display panel, which is greater than a threshold angle.
The method for manufacturing a display panel according to any one of claims 1-3, wherein, according to the color shift state of the display panel in a lateral viewing angle, the pixel defining layer of the display panel and/or the pixel defining The support pillar layer on the layer is doped with light-absorbing materials corresponding to the color shift state, including:

When the color shift state of the display panel is reddish light, a red light absorbing material is doped in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer.
The method for manufacturing a display panel according to any one of claims 1-3, wherein, according to the color shift state of the display panel in a lateral viewing angle, the pixel defining layer of the display panel and/or the pixel defining The support pillar layer on the layer is doped with light-absorbing materials corresponding to the color shift state, including:

When the color shift state of the display panel is greenish light, a green light absorbing material is doped in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer.
The method for manufacturing a display panel according to any one of claims 1-3, wherein, according to the color shift state of the display panel in a lateral viewing angle, the pixel defining layer of the display panel and/or the pixel defining The support pillar layer on the layer is doped with light-absorbing materials corresponding to the color shift state, including:

When the color shift state of the display panel is partial to blue light, a blue light absorbing material is doped in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer.
The method for manufacturing a display panel according to any one of claims 1-3, wherein the doping and the color shift state in the pixel defining layer of the display panel and/or the support pillar layer on the pixel defining layer The corresponding light-absorbing materials include:

Doping the light-absorbing material into the material of the pixel defining layer to be formed to form a first light-absorbing mixture;

Forming the first light-absorbing mixture into the pixel defining layer; and/or,

Doping the light-absorbing material into the material of the supporting column layer to be formed to form a second light-absorbing mixture;

The second light-absorbing mixture is formed into the supporting pillar layer.
8. The method of manufacturing a display panel according to claim 7, wherein:

The mass concentration of the light-absorbing material in the first light-absorbing mixture is 0.05%-0.15%; and/or,

The mass concentration of the light-absorbing material in the second light-absorbing mixture is 0.05%-0.15%.
3. The method for manufacturing a display panel according to any one of claims 1 to 3, wherein the color shift state includes information about which color the color of the emitted light is biased, and the light-absorbing material corresponding to the color shift state It means that the light-absorbing material has a stronger ability to absorb light of that color to which the color shift state is biased than to other lights.
4. The method of manufacturing a display panel according to claim 4, wherein the red light absorbing material comprises cadmium telluride.
7. The method of manufacturing a display panel according to claim 6, wherein the blue light absorbing material comprises Lotsorb adsorbent.
The method for manufacturing a display panel according to any one of claims 1 to 3, wherein the light-absorbing material is doped into the pixel defining layer and/or the support pillar layer on the pixel defining layer by melting or melting.
4. The method of manufacturing a display panel according to claim 3, wherein the threshold angle is any angle between 70° and 80°.
A display panel including:

TFT circuit layer;

The pixel defining layer is located on the TFT circuit layer;

The light-emitting layer is located in the opening of the pixel defining layer,

Wherein, the pixel defining layer is doped with a light absorbing material, and the light absorbing material is used to absorb part of the light emitted from the light emitting layer to the pixel defining layer.
The display panel according to claim 14, wherein the light absorbing material is a red light absorbing material, a green light absorbing material or a blue light absorbing material.
The display panel of claim 14, wherein the light-absorbing material includes cadmium telluride or Lotsorb adsorbent.
14. The display panel according to claim 14, wherein the mass concentration of the light-absorbing material in the mixture of the pixel defining layer material and the light-absorbing material is 0.05%-0.15%.
A display panel including:

TFT circuit layer;

The pixel defining layer is located on the TFT circuit layer;

A support column layer, the support column layer is arranged on the pixel defining layer and used to support the mask;

The light-emitting layer is located in the opening of the pixel defining layer,

Wherein, the pixel defining layer and/or the supporting column layer are doped with a light-absorbing material, and the light-absorbing material is used to absorb a part of the light emitted from the light emitting layer to the pixel defining layer and the supporting column layer.