Display substrate having a display region and a non-display region surrounding the display region and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-12016221-B2
Application number	US-202017298439-A
Country	US
Kind code	B2
Filing date	Sep 2, 2020
Priority date	Sep 2, 2020
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

A display substrate, a method for manufacturing the display substrate and a display device are provided. The display substrate includes a display region and a non-display region surrounding the display region. The display substrate further includes: an organic functional layer including a first portion located in the display region and a second portion located in the non-display region. The second portion is provided with at least one isolation groove, and is partitioned into at least two separate sub-portions by the at least one isolation groove, and the at least two sub-portions are arranged sequentially along a first direction from the display region to a boundary of the display substrate.

First claim

What is claimed is:

1. A display substrate, comprising: a display region and a non-display region surrounding the display region;
wherein the display substrate further comprises:
an organic functional layer comprising a first portion located in the display region and a second portion located in the non-display region, wherein the second portion is provided with at least one isolation groove, and is partitioned into at least two separate sub-portions by the at least one isolation groove, and the at least two sub-portions are arranged sequentially along a first direction from the display region to a boundary of the display substrate;
wherein the second portion is provided with a first isolation groove and a second isolation groove, and the first isolation groove is located between the display region and the second isolation groove;
the second portion is partitioned by the first isolation groove and the second isolation groove into a first sub-portion, a second sub-portion and a third sub-portion, and the first sub-portion, the second sub-portion and the third sub-portion are separate from each other, and are sequentially arranged in a spaced manner along the first direction;
wherein the display substrate further comprises:
a circuit structure located in the non-display region, wherein an orthographic projection of the circuit structure onto a base substrate of the display substrate is covered by an orthographic projection of the second sub-portion onto the base substrate;
a first signal line structure located in the non-display region, wherein an orthographic projection of the first signal line structure onto the base substrate is covered by an orthographic projection of the first sub-portion onto the base substrate;
a second signal line structure located in the non-display region, wherein an orthographic projection of the second signal line structure onto the base substrate is covered by an orthographic projection of the third sub-portion onto the base substrate;
wherein along the first direction, both a width of the first sub-portion and a width of the third sub-portion are smaller than a width of the second sub-portion.

2. The display substrate according to claim 1 , wherein the at least one isolation groove surrounds the display region, each of the at least two sub-portions surrounds the display region, and the at least two sub-portions are arranged in a manner in which an outer sub-portion surrounds an inner sub-portion.

3. The display substrate according to claim 1 , wherein the circuit structure comprises a gate driver circuit, a test circuit, and a multiplexing circuit;
the first signal line structure comprises a power signal line; and
the second signal line structure comprises a test signal line and a clock signal line.

4. The display substrate according to claim 1 , wherein the organic functional layer comprises a first planarization layer, a second planarization layer and/or a pixel definition layer.

5. The display substrate according to claim 1 , further comprising an electrically conductive functional pattern located in the non-display region, wherein an orthographic projection of the at least one isolation groove onto a base substrate of the display substrate does not overlap an orthographic projection of the electrically conductive functional pattern onto the base substrate.

6. The display substrate according to claim 1 , further comprising an inorganic functional layer located in the non-display region, wherein an orthographic projection of the at least one isolation groove onto a base substrate of the display substrate overlaps an orthographic projection of the inorganic functional layer onto the base substrate.

7. A display device, comprising a display substrate, wherein the display substrate comprises: a display region and a non-display region surrounding the display region;
the display substrate further comprises:
an organic functional layer comprising a first portion located in the display region and a second portion located in the non-display region, wherein the second portion is provided with at least one isolation groove, and is partitioned into at least two separate sub-portions by the at least one isolation groove, and the at least two sub-portions are arranged sequentially along a first direction from the display region to a boundary of the display substrate;
wherein the second portion is provided with a first isolation groove and a second isolation groove, and the first isolation groove is located between the display region and the second isolation groove;
the second portion is partitioned by the first isolation groove and the second isolation groove into a first sub-portion, a second sub-portion and a third sub-portion, and the first sub-portion, the second sub-portion and the third sub-portion are separate from each other, and are sequentially arranged in a spaced manner along the first direction;
wherein the display substrate further comprises:
a circuit structure located in the non-display region, wherein an orthographic projection of the circuit structure onto a base substrate of the display substrate is covered by an orthographic projection of the second sub-portion onto the base substrate;
a first signal line structure located in the non-display region, wherein an orthographic projection of the first signal line structure onto the base substrate is covered by an orthographic projection of the first sub-portion onto the base substrate;
a second signal line structure located in the non-display region, wherein an orthographic projection of the second signal line structure onto the base substrate is covered by an orthographic projection of the third sub-portion onto the base substrate;
wherein along the first direction, both a width of the first sub-portion and a width of the third sub-portion are smaller than a width of the second sub-portion.

8. The display device according to claim 7 , wherein the display device comprises a circular watch.

9. The display device according to claim 7 , wherein the at least one isolation groove surrounds the display region, each of the at least two sub-portions surrounds the display region, and the at least two sub-portions are arranged in a manner in which an outer sub-portion surrounds an inner sub-portion.

10. The display device according to claim 7 , wherein the circuit structure comprises a gate driver circuit, a test circuit, and a multiplexing circuit;
the first signal line structure comprises a power signal line; and
the second signal line structure comprises a test signal line and a clock signal line.

11. The display device according to claim 7 , wherein the organic functional layer comprises a first planarization layer, a second planarization layer and/or a pixel definition layer.

12. The display device according to claim 7 , further comprising an electrically conductive functional pattern located in the non-display region, wherein an orthographic projection of the at least one isolation groove onto a base substrate of the display substrate does not overlap an orthographic projection of the electrically conductive functional pattern onto the base substrate.

13. The display device according to claim 7 , further comprising an inorganic functional layer located in the non-display region, wherein an orthographic projection of the at least one isolation groove onto a base substrate of the display substrate overlaps an orthographic projection of the inorganic functional layer onto the base substrate.

14. A method for manufacturing a display substrate, wherein the display substrate comprises a display region and a non-display region surrounding the display

Assignees

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

Inventors

• Dai Jie
• Yu Pengfei
• Wang Siyu
• Zhang Shun
• Zhang Yi
• Liu Tingliang
• Du Sen
• Song Li

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/124 Primary

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H10K59/1201

  Manufacture or treatment · CPC title