Display panel having a recess disposed in the transistion area

Patent metadata

Field	Value
Publication number	US-11271056-B2
Application number	US-201916633170-A
Country	US
Kind code	B2
Filing date	Nov 5, 2019
Priority date	Aug 28, 2019
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

A display panel and a display device are provided. The display panel is divided into a display area, a transition area, and a bending area. The display panel includes a first recess and a second recess. The first recess is disposed in the bending area, and the second recess is disposed in the transition area.

First claim

What is claimed is:

1. A display panel, wherein the display panel is divided into a display area, a transition area, and a bending area, the display panel comprising:
a flexible substrate, a buffer layer, an array substrate, a pixel defining layer, a support layer, and a thin film encapsulation layer which are stacked in a stack, wherein the array substrate comprises a gate insulating layer, a dielectric layer, a first planarization layer, a second source drain layer, and a second planarization layer;
a first recess disposed in the bending area, the first recess penetrating through the dielectric layer, the gate insulating layer, and the buffer layer, and recessed in a side surface of the flexible substrate; and
a second recess disposed in the transition area, and the second recess penetrating through the support layer, the pixel defining layer, the second planarization layer, and the first planarization layer.

2. The display panel according to claim 1 , wherein the first planarization layer fills the first recess, and the thin film encapsulation layer fills the second recess.

3. The display panel according to claim 1 , wherein the buffer layer is provided with a buffer through hole in the bending area, the array substrate is provided with a gate insulating through hole and an electrical layer through hole in the bending area, and the buffer through hole is opposite to the gate insulating through hole and the dielectric through hole.

4. The display panel according to claim 1 , wherein the array substrate is provided with a first planarization through hole and a second planarization through hole in the transition area, the pixel defining layer is provided with a pixel defining through hole in the transition area, the support layer is provided with a support through hole in the transition area, and the first planarization through hole is opposite to the second planarization through hole, the pixel defining through hole, and the support through hole.

5. The display panel according to claim 1 , wherein the flexible substrate comprises:
a first substrate;
an insulating layer disposed on a surface of a side of the first substrate; and
a second substrate disposed on a surface of the insulating layer away from a side of the first substrate;
wherein a recess of the second substrate is recessed on a surface of a side of the second substrate and is disposed opposite to the buffer through hole in the bending area.

6. The display panel according to claim 5 , wherein a thickness of the second substrate in the bending area is less than a thickness of the second substrate in the display area or the transition area, and the thickness of the second substrate in the bending area ranges between 2 um and 8 um.

7. The display panel according to claim 1 , wherein the array substrate further comprises a first source drain layer, the first source drain layer extends from the transition area to the bending area, and the second source drain layer extends from the transition area to the bending area.

8. The display panel according to claim 7 , wherein the first source drain layer is disposed on an upper surface of the dielectric layer in the transition area, and the second source drain layer is disposed on an upper surface of the first planarization layer and connected to the first source drain layer in the transition area.

9. The display panel according to claim 7 , wherein the first source drain layer is disposed on a sidewall and a bottom surface of the first recess in the bending area, and the second source drain layer is disposed on an upper surface of the first planarization layer in the bending area.

10. A display device comprising the display panel according to claim 1 .

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd
• Wuhan China Star Optoeleetronies Semiconductor Display Tech Co Ltd

Inventors

• Ouyang Qi
• Kim Mugyeom

Classifications

• H10K59/873

  Encapsulations · CPC title

• G09F9/33

  being semiconductor devices, e.g. diodes · CPC title

• H01L27/3258 Primary

  Electricity · mapped topic

• H01L51/56

  Electricity · mapped topic

• H01L51/5253

  Electricity · mapped topic