Organic light-emitting diode display substrate, display panel, display device, manufacturing method thereof, and fingerprint identification module

Patent metadata

Field	Value
Publication number	US-11233110-B2
Application number	US-201916766613-A
Country	US
Kind code	B2
Filing date	May 23, 2019
Priority date	May 23, 2019
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

An OLED display substrate, a display panel, a display device, a manufacturing method and a fingerprint identification module are provided. The OLED display substrate includes a microporous light-shielding pattern arranged between adjacent pixel regions and including a plurality of pinholes. The microporous light-shielding pattern is arranged at a same layer as, and insulated from, a nontransparent electrode of the OLED display substrate.

First claim

What is claimed is:

1. An Organic Light-Emitting Diode (OLED) display substrate, comprising a microporous light-shielding pattern arranged between adjacent pixel regions and comprising a plurality of pinholes, wherein the microporous light-shielding pattern is arranged at a same layer as, and insulated from, a nontransparent electrode of the OLED display substrate.

2. The OLED display substrate according to claim 1 , wherein the microporous light-shielding pattern is made of a same material as the nontransparent electrode of the OLED display substrate.

3. The OLED display substrate according to claim 1 , wherein the nontransparent electrode is an anode of the OLED display substrate.

4. The OLED display substrate according to claim 1 , wherein the nontransparent electrode is an electrode of a thin film transistor (TFT) of the OLED display substrate.

5. The OLED display substrate according to claim 1 , wherein the microporous light-shielding pattern is used for pinhole imaging.

6. The OLED display substrate according to claim 3 , wherein the OLED display substrate specifically comprises:
a base substrate;
a TFT array layer arranged on the base substrate;
a planarization layer covering the TFT array layer; and
the anode and the microporous light-shielding pattern arranged on the planarization layer and separated from each other.

7. A fingerprint identification module, comprising the OLED display substrate according to claim 1 , and an optical sensor arranged at a non-light-exiting side of the OLED display substrate, wherein an orthogonal projection of the optical sensor onto the OLED display substrate at least partially overlaps an orthogonal projection of the microporous light-shielding pattern onto the OLED display substrate.

8. The fingerprint identification module according to claim 7 , wherein the orthogonal projection of the optical sensor onto the OLED display substrate is located within the orthogonal projection of the microporous light-shielding pattern onto the OLED display substrate.

9. A display panel, comprising the OLED display substrate according to claim 1 .

10. A display device, comprising the fingerprint identification module according to claim 7 .

11. A method of manufacturing an OLED display substrate, comprising:
forming a microporous light-shielding pattern between adjacent pixel regions of the OLED display substrate,
wherein the microporous light-shielding pattern is arranged at a same layer as, and insulated from, a nontransparent electrode of the OLED display substrate, and comprises a plurality of pinholes.

12. The method according to claim 11 , wherein the forming the microporous light-shielding pattern comprises forming the microporous light-shielding pattern and an anode of the OLED display substrate through a single patterning process.

13. The method according to claim 11 , wherein the forming the microporous light-shielding pattern comprises forming the microporous light-shielding pattern and an electrode of a TFT of the OLED display substrate through a single patterning process.

14. The OLED display substrate according to claim 2 , wherein the nontransparent electrode is an anode of the OLED display substrate.

15. The OLED display substrate according to claim 2 , wherein the nontransparent electrode is an electrode of a thin film transistor (TFT) of the OLED display substrate.

16. A display device, comprising the fingerprint identification module according to claim 8 .

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Hu Hongwei
• Xin Yanxia
• Li Xueping
• Bao Zheng
• Wu Yihao
• Xu Peng
• Liu Donghong

Classifications

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/126

  Shielding, e.g. light-blocking means over the TFTs · CPC title

• G06V40/1318 Primary

  using electro-optical elements or layers, e.g. electroluminescent sensing · CPC title

• H01L51/56

  Electricity · mapped topic

• H01L2227/323

  Electricity · mapped topic