Bendable display panel and bendable display device provided with through groove in bending display region

Patent metadata

Field	Value
Publication number	US-11374075-B2
Application number	US-201916754843-A
Country	US
Kind code	B2
Filing date	Oct 22, 2019
Priority date	Aug 15, 2019
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

The present application provides a display panel and a display device. The display panel includes a plurality of first pixel circuits located in a bending display region and a plurality of second pixel circuits located in a non-bending display region, a first gap is defined between two adjacent first pixel circuits, a second gap is defined between two adjacent second pixel circuits, a width of the first gap is greater than a width of the second gap, and at least one through groove is formed in a region corresponding to the first gap and extends along an extending direction of the first gap.

First claim

What is claimed is:

1. A display panel, wherein the display panel comprises a bending display region and a non-bending display region; and
the display panel comprises a plurality of first pixel circuits located in the bending display region and a plurality of second pixel circuits located in the non-bending display region, a first gap is defined between two adjacent first pixel circuits, a second gap is defined between two adjacent second pixel circuits, a width of the first gap is greater than a width of the second gap, and at least one through groove is formed in a region corresponding to the first gap and extends along an extending direction of the first gap;
wherein the bending display region comprises a substrate layer, and a source drain electrode layer, a first insulating layer, a gate electrode layer, a second insulating layer, a first source drain electrode metal layer, a pixel defining layer, and an organic supporting layer sequentially stacked on the substrate layer;
wherein the plurality of first pixel circuits in two adjacent rows are electrically connected through the first source drain electrode metal layer;
wherein the at least one through groove penetrates through the first insulating layer and the second insulating layer of the first gap of the bending display region;
wherein in the bending display region, the first source drain electrode metal layer is disposed along a surface of the second insulating layer and an inner surface of the at least one through groove and electrically connected to the source drain electrode layer; and
wherein the organic supporting layer is disposed on the pixel defining layer and overlaps the first source drain electrode metal layer in a plan view in the bending display region.

2. The display panel of claim 1 , wherein the gate electrode layer comprises an upper gate electrode layer and a lower gate electrode layer, the second insulating layer comprises a first sublayer and a second sublayer, the lower gate electrode layer, the first sublayer, the upper gate electrode layer, and the second sublayer are sequentially stacked on the first insulating layer, and the at least one through groove penetrates through the first insulating layer, the first sublayer, and the second sublayer of the first gap of the bending display region.

3. The display panel of claim 1 , wherein the display panel located in the bending display region further comprises:
a first planarization layer formed on the surface of the second insulating layer and the first source drain electrode metal layer, and filling the at least one through groove.

4. The display panel of claim 1 , wherein the display panel located in the bending display region further comprises:
an organic layer, wherein the organic layer is formed on the second insulating layer, and fills the at least one through groove.

5. The display panel of claim 1 , wherein an extending direction of the at least one through groove is different from a bending direction of the display panel.

6. The display panel of claim 5 , wherein the extending direction of the at least one through groove is perpendicular to the bending direction of the display panel, and the width of the first gap is greater than or equal to 10 micrometers.

7. The display panel of claim 1 , wherein the substrate layer comprises a base layer, a shielding layer, and a buffer layer sequentially stacked.

8. A display device, comprising a display panel, wherein the display panel comprises a bending display region and a non-bending display region; and
the display panel comprises a plurality of first pixel circuits located in the bending display region and a plurality of second pixel circuits located in the non-bending display region, a first gap is defined between two adjacent first pixel circuits, a second gap is defined between two adjacent second pixel circuits, a width of the first gap is greater than a width of the second gap, and at least one through groove is formed in a region corresponding to the first gap and extends along an extending direction of the first gap;
wherein the bending display region comprises a substrate layer, and a source drain electrode layer, a first insulating layer, a gate electrode layer, a second insulating layer, a first source drain electrode metal layer, a pixel defining layer, and an organic supporting layer sequentially stacked on the substrate layer;
wherein the plurality of first pixel circuits in two adjacent rows are electrically connected through the first source drain electrode metal layer;
wherein the at least one through groove penetrates through the first insulating layer and the second insulating layer of the first gap of the bending display region;
wherein in the bending display region, the first source drain electrode metal layer is disposed along a surface of the second insulating layer and an inner surface of the at least one through groove and electrically connected to the source drain electrode layer; and
wherein the organic supporting layer is disposed on the pixel defining layer and overlaps the first source drain electrode metal layer in a plan view in the bending display region.

9. The display device of claim 8 , wherein the gate electrode layer comprises an upper gate electrode layer and a lower gate electrode layer, the second insulating layer comprises a first sublayer and a second sublayer, the lower gate electrode layer, the first sublayer, the upper gate electrode layer, and the second sublayer are sequentially stacked on the first insulating layer, and the at least one through groove penetrates through the first insulating layer, the first sublayer, and the second sublayer of the first gap of the bending display region.

10. The display device of claim 8 , wherein the display panel located in the bending display region further comprises:
a first planarization layer formed on the surface of the second insulating layer and the first source drain electrode metal layer, and filling the at least one through groove.

11. The display device of claim 8 , wherein the display panel located in the bending display region further comprises:
an organic layer, wherein the organic layer is formed on the second insulating layer, and fills the at least one through groove.

12. The display device of claim 8 , wherein an extending direction of the at least one through groove is different from a bending direction of the display panel.

13. The display device of claim 12 , wherein the extending direction of the at least one through groove is perpendicular to the bending direction of the display panel, and the width of the first gap is greater than or equal to 10 micrometers.

14. The display device of claim 8 , wherein the substrate layer comprises a base layer, a shielding layer, and a buffer layer sequentially stacked.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Wu Shaojing

Classifications

• G09F9/301

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• H01L27/3258 Primary

  Electricity · mapped topic

• H01L27/3211

  Electricity · mapped topic

• H01L51/0097

  Electricity · mapped topic

• H01L2251/5338

  Electricity · mapped topic