Display device

Patent metadata

Field	Value
Publication number	US-11927784-B2
Application number	US-202117483546-A
Country	US
Kind code	B2
Filing date	Sep 23, 2021
Priority date	Sep 29, 2020
Publication date	Mar 12, 2024
Grant date	Mar 12, 2024

Abstract

Provided is an anti-dazzling device, including a first electrode, a second electrode and a dimming structure, wherein the first electrode and the second electrode are disposed opposite to each other, and the dimming structure is disposed between the first electrode and the second electrode and is configured to change a light transmittance of the anti-dazzling device under action of voltage. An OLED display device and a method for manufacturing an anti-dazzling device are also provided.

First claim

What is claimed is:

1. An OLED display device, comprising an anti-dazzling device and an OLED display unit, wherein the anti-dazzling device is disposed on a display surface of the OLED display unit, and the anti-dazzling device comprises a first electrode, a second electrode and a dimming structure; the first electrode and the second electrode are disposed opposite to each other, and the dimming structure is disposed between the first electrode and the second electrode and is configured to change a light transmittance of the anti-dazzling device under action of voltage;
the OLED display unit comprises a low-temperature polysilicon backplane, a pixel definition layer, a thin film encapsulation layer and a reflective metal layer; the pixel definition layer, the thin film encapsulation layer and the reflective metal layer are sequentially stacked on a surface of the low-temperature polysilicon backplane; and
the pixel definition layer is provided with a plurality of pixel openings, and an OLED light emitting device is disposed in each of the pixel openings; the reflective metal layer is provided with a plurality of metal layer openings which have a one-to-one correspondence with the pixel openings.

2. The OLED display device according to claim 1 , wherein the low-temperature polysilicon backplane comprises a PI film and a plurality of low-temperature polysilicon thin film transistors.

3. The OLED display device according to claim 1 , wherein a thickness of the first electrode and a thickness of the second electrode are in a range of 100 nm-200 nm.

4. The OLED display device according to claim 1 , wherein the dimming structure is an electrochromic layer.

5. The OLED display device according to claim 4 , wherein the electrochromic layer comprises a cationic electrochromic layer, an anionic electrochromic layer and a polymer dielectric gel layer; the cationic electrochromic layer and the anionic electrochromic layer are disposed opposite to each other, and the polymer dielectric gel layer is disposed between the cationic electrochromic layer and the anionic electrochromic layer; and
wherein the cationic electrochromic layer is attached to the first electrode, and the anionic electrochromic layer is attached to the second electrode.

6. The OLED display device according to claim 5 , wherein a color of the electrochromic layer is blue after being energized.

7. The OLED display device according to claim 6 , wherein the cationic electrochromic layer is made of at least one of the following materials:
triphenylamine;
ferrocene;
phenazines; or
phenothiazines.

8. The OLED display device according to claim 6 , wherein the anionic electrochromic layer is made of at least one of the following materials:
viologens; or
substituted viologen derivatives.

9. The OLED display device according to claim 1 , wherein the anti-dazzling device further comprises a first polarizer and a second polarizer; the first polarizer is disposed on a side of the first electrode distal from the second electrode, and the second polarizer is disposed on a side of the second electrode distal from the first electrode; and the dimming structure is an electrophoretic polarizing layer.

10. The OLED display device according to claim 9 , wherein the electrophoretic polarizing layer is made of a nematic liquid crystal material.

11. The OLED display device according to claim 1 , wherein the first electrode is made of at least one of the following materials:
indium tin oxide; or
indium zinc oxide.

12. The OLED display device according to claim 1 , wherein the second electrode is made of at least one of the following materials:
indium tin oxide; or
indium zinc oxide.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Qu Caiyu
• Hao Yanjun
• Zhang Huijuan
• Tian Xueyan
• Liu Zheng

Classifications

• G02B5/3058 Primary

  comprising electrically conductive elements, e.g. wire grids, conductive particles · CPC title

• G02B5/3016

  involving passive liquid crystal elements (optical properties of liquid crystals G02F1/0063; polarising elements associated with active liquid crystal devices G02F1/133528) · CPC title

• G02F1/133528

  Polarisers · CPC title

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title

• G02F1/1343

  Electrodes {(reflective electrodes G02F1/133553)} · CPC title