Organic light-emitting diode display substrate, method for manufacturing organic light-emitting diode display substrate and display device

Patent metadata

Field	Value
Publication number	US-11069758-B2
Application number	US-201916436201-A
Country	US
Kind code	B2
Filing date	Jun 10, 2019
Priority date	Jul 27, 2018
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

The present disclosure relates to the display technology, and provides an OLED display substrate, a method for manufacturing the OLED display substrate and a display device. The method includes: forming pixel definition layer transition patterns with metal; and oxidizing the pixel definition layer transition patterns to form an insulative pixel definition layer.

First claim

What is claimed is:

1. An OLED display substrate, comprising:
an anode;
wherein the anode comprises a second transparent conductive pattern, and the second transparent conductive pattern, as a whole, correspond to a plurality of pixel opening regions;
the anode comprises a metal layer, and the metal layer comprises a first portions and a pixel definition layer transition patterns arranged alternately;
the anode further comprises a third transparent conductive pattern, the first portion and the third transparent conductive pattern are arranged in the corresponding pixel opening region;
a projection of the pixel defining layer transition pattern on the second transparent conductive pattern and a projection of the pixel opening region on the second transparent conductive pattern do not overlap;
the OLEO display substrate further comprises a pixel defining layer that is acquired by oxidizing the pixel defining layer transition pattern.

2. The OLED display substrate according to claim 1 , wherein the pixel definition layer transition patterns and the at least a part of anode comprise a metal layer, the metal layer comprises a first metal pattern and a plurality of metal banks arranged on the first metal pattern, spaced apart from each other and defining a plurality of pixel opening regions, the first metal pattern is a part of the anode, and the metal banks are the pixel definition layer transition patterns.

3. The OLED display substrate according to claim 2 , wherein the anode further comprises a second transparent conductive pattern, and an orthogonal projection of the second transparent conductive pattern onto a plane where the first metal pattern is located coincides with the first metal pattern.

4. The OLED display substrate according to claim 2 , wherein the anode further comprises third transparent conductive patterns arranged in the pixel opening regions.

5. The OLED display substrate according to claim 1 , wherein the pixel definition layer transition patterns and the at least a part of the anode comprise a metal layer, the metal layer comprises a first metal pattern consisting of first portions for forming the anode and the pixel definition layer transition patterns, the first portions and the pixel definition layer transition patterns are arranged alternately, and an upper surface of each first portion is flush with an upper surface of each pixel definition layer transition pattern.

6. The OLED display substrate according to claim 5 , wherein the anode further comprises a second transparent conductive pattern, and an orthogonal projection of the second transparent conductive pattern onto a plane where the first metal pattern is located coincides with the first metal pattern.

7. The OLED display substrate according to claim 5 , wherein the anode further comprises third transparent conductive patterns; the pixel definition layer transition patterns are insulating oxides, after is oxidized protrudes beyond the first portions and defines the plurality of pixel opening regions.

8. A display device, comprising the OLED display substrate according to claim 1 .

9. The OLED display substrate according to claim 1 , wherein an upper surface of at least a part of the anode is flush with an upper surface of each pixel definition layer transition pattern.

Assignees

• Hefei Xinsheng Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Song Wei
• Yan Liangchen
• Zhao Ce
• Wang Dongfang
• Zhou Bin
• Ding Yuankui
• Liu Jun
• Hu Yingbin
• Li Wei

Classifications

• H10K59/8051

  Anodes · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H01L2251/5315

  Electricity · mapped topic

• H01L51/0096

  Electricity · mapped topic