Display panel and display device

Patent metadata

Field	Value
Publication number	US-11908875-B2
Application number	US-202016963262-A
Country	US
Kind code	B2
Filing date	May 20, 2020
Priority date	Apr 28, 2020
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

A display panel and a display device are provided. A retaining wall is disposed on a middle position of a driver circuit layer, the retaining wall can prevent an insulating film from overlapping a whole sealing layer in an insulating film coating process, which improves adhesion of the display panel and reliability against high temperature and high humidity, thereby improving quality of the display panel.

First claim

What is claimed is:

1. A display panel, comprising:
a driver circuit layer having a first surface and a second surface disposed opposite to the first surface;
a metal layer disposed on the first surface and provided with gaps;
an insulating layer disposed on one surface of the metal layer away from the driver circuit layer and embedded into the gaps;
a plastic layer disposed on one surface of the insulating layer away from the driver circuit layer;
a sealing layer covering a surface of the plastic layer away from the driver circuit layer;
a retaining wall extending from the first surface to the sealing layer and disposed on a middle position of the driver circuit layer, wherein the retaining wall is disposed in one of the gaps; and
an insulating film disposed between the plastic layer and the sealing layer and on one side of the retaining wall.

2. The display panel according to claim 1 , wherein the retaining wall is wavy, continuously convex, or jagged.

3. The display panel according to claim 1 , wherein a width of the retaining wall ranges from 20 μm to 40 μm.

4. The display panel according to claim 1 , wherein the retaining wall is formed by a halftone mask.

5. The display panel according to claim 1 , wherein a height of the retaining wall ranges from 1.0 μm to 2.5 μm.

6. The display panel according to claim 1 , further comprising a transparent conductive film disposed on one surface of the sealing layer away from the driver circuit layer.

7. The display panel according to claim 1 , wherein the driver circuit layer comprises a ring-shaped area and a busline area disposed adjacent, and the retaining wall is disposed in the busline area.

8. The display panel according to claim 1 , wherein the plastic layer is a copolymer plastic of heptafluoropropyl trifluorovinyl ether and polytetrafluoroethene.

9. The display panel according to claim 1 , wherein the insulating film is a polyimide film.

10. A display device comprising a display panel, wherein the display panel comprises:
a driver circuit layer having a first surface and a second surface disposed opposite to the first surface;
a metal layer disposed on the first surface and provided with gaps;
an insulating layer disposed on one surface of the metal layer away from the driver circuit layer and embedded into the gaps;
a plastic layer disposed on one surface of the insulating layer away from the driver circuit layer;
a sealing layer covering a surface of the plastic layer away from the driver circuit layer;
a retaining wall extending from the first surface to the sealing layer and disposed on a middle position of the driver circuit layer, wherein the retaining wall is disposed in one of the gaps; and
an insulating film disposed between the plastic layer and the sealing layer and on one side of the retaining wall.

11. The display device according to claim 10 , wherein the retaining wall is wavy, continuously convex, or jagged.

12. The display device according to claim 10 , wherein a width of the retaining wall ranges from 20 μm to 40 μm.

13. The display device according to claim 10 , wherein the retaining wall is formed by a halftone mask.

14. The display device according to claim 10 , wherein a height of the retaining wall ranges from 1.0 μm to 2.5 μm.

15. The display device according to claim 10 , further comprising a transparent conductive film disposed on one surface of the sealing layer away from the driver circuit layer.

16. The display device according to claim 10 , wherein the driver circuit layer comprises a ring-shaped area and a busline area disposed adjacent, and the retaining wall is disposed in the busline area.

17. The display device according to claim 10 , wherein the plastic layer is a copolymer plastic of heptafluoropropyl trifluorovinyl ether and polytetrafluoroethene.

18. The display device according to claim 10 , wherein the insulating film is a polyimide film.

Assignees

• Shenzhen China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Ren Wei

Classifications

• H10W74/137 Primary

  the encapsulations being directly on the semiconductor body (H10W74/134 takes precedence) · CPC title

• H10D86/0231

  using masks, e.g. half-tone masks · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/40

  characterised by multiple TFTs · CPC title

• H10D86/0212 Primary

  comprising manufacture, treatment or coating of substrates · CPC title