Display substrate and display device

Patent metadata

Field	Value
Publication number	US-11903273-B2
Application number	US-202017293667-A
Country	US
Kind code	B2
Filing date	Jul 27, 2020
Priority date	Jul 27, 2020
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

The present disclosure relates to a display substrate and a display device. The display substrate includes: a base substrate including a display area and a non-display area includes a fan-out area; a signal line layer including a plurality of signal lines located in the fan-out area; a first metal layer including a first power line located in the non-display area; a first electrode layer including a first electrode portion; and an organic insulating layer having a groove located in the non-display area. On the base substrate, an orthographic projection of the first electrode portion at least partially overlaps with that of the first power line, an orthographic projection of the organic insulating layer at an edge of the groove at least partially overlaps with that of the fan-out area in a first overlapping area having at least part not overlapping with an orthographic projection of the first electrode portion.

First claim

What is claimed is:

1. A display substrate comprising:
a base substrate comprising a display area and a non-display area located at a periphery of the display area, wherein the non-display area comprises a fan-out area;
a signal line layer arranged on the base substrate and comprising a plurality of signal lines located in the fan-out area;
a first metal layer arranged on one side of the signal line layer away from the base substrate and comprising a first power line located in the non-display area;
a first electrode layer located on one side of the first metal layer away from the base substrate and comprising a first electrode portion, wherein an orthographic projection of the first electrode portion on the base substrate at least partially overlaps with an orthographic projection of the first power line on the base substrate, and the first electrode portion is electrically connected to the first power line; and
an organic insulating layer located between the first metal layer and the first electrode layer and having at least one groove located in the non-display area, wherein an orthographic projection of the organic insulating layer at an edge of the at least one groove on the base substrate at least partially overlaps, in a first area, with an orthographic projection of the fan-out area on the base substrate, and at least part of the first area does not overlap with the orthographic projection of the first electrode portion on the base substrate.

2. The display substrate according to claim 1 , wherein the organic insulating layer is in direct contact with the first electrode layer.

3. The display substrate according to claim 1 , further comprising a second metal layer located on one side of the first metal layer away from the base substrate, wherein the organic insulating layer comprises:
a first organic insulating layer located between the first metal layer and the second metal layer; and
a second organic insulating layer located between the second metal layer and the first electrode layer, wherein the at least one groove comprises a second groove portion located within the second organic insulating layer.

4. The display substrate according to claim 3 , wherein the at least one groove comprises multiple grooves, the second metal layer comprises a metal portion electrically connected to the first power line and the first electrode portion through at least part of the multiple grooves.

5. The display substrate according to claim 1 , further comprising:
a second metal layer located on one side of the first metal layer away from the base substrate,
wherein the organic insulating layer comprises:
a first organic insulating layer located between the first metal layer and the second metal layer; and
a second organic insulating layer located between the second metal layer and the first electrode layer,
wherein the at least one groove comprises a first groove portion located within the first organic insulating layer and a second groove portion located within the second organic insulating layer.

6. The display substrate according to claim 1 , further comprising:
a second metal layer located on one side of the first metal layer away from the base substrate,
wherein the organic insulating layer comprises:
a first organic insulating layer located between the first metal layer and the second metal layer; and
a second organic insulating layer located between the second metal layer and the first electrode layer,
wherein the at least one groove comprises a first groove portion located within the first organic insulating layer, and the second organic insulating layer covers an upper side of the first groove portion.

7. The display substrate according to claim 1 , wherein the first electrode portion is located in the non-display area and at least partially surrounds the display area.

8. The display substrate according to claim 1 , wherein the display area comprises: a first boundary, a second boundary, a third boundary, and a fourth boundary, the first boundary and the third boundary are arranged opposite to each other, and the second boundary and the fourth boundary are arranged opposite to each other; and the non-display area comprises a first peripheral area located outside the first boundary, a second peripheral area located outside the second boundary, a third peripheral area located outside the third boundary and a fourth peripheral area located outside the fourth boundary, the fan-out area is located within the fourth peripheral area,
wherein the first electrode portion comprises:
a first portion continuously arranged in the first peripheral area, the second peripheral area, and the third peripheral area;
two second portions located in the fourth peripheral area, respectively connected to the first portion located in the first peripheral area and the third peripheral area, and extending in a direction parallel to the fourth boundary;
two third portions located in the fourth peripheral area, wherein orthographic projections of the two third portions on the base substrate overlap with the fan-out area;
two fourth portions located in the fourth peripheral area, wherein both ends of each of the two fourth portions are respectively connected to one of the two third portions and one of the two second portions; and
a fifth portion located in the fourth peripheral area, connected between the two third portions, and at least partially overlapping with the first power line.

9. The display substrate according to claim 8 , wherein a width of each second portion in a direction perpendicular to the fourth boundary, a width of the fifth portion in a direction perpendicular to the fourth boundary, and a width of each fourth portion perpendicular to an extension direction of the fourth portion are all smaller than a width of each first portion perpendicular to an extension direction of the first portion, and are all larger than a width of each third portion in a direction perpendicular to the fourth boundary.

10. The display substrate according to claim 8 , wherein an included angle between an extending direction of each fourth portion and the fourth boundary is 35 to 55 degrees.

11. The display substrate according to claim 8 , wherein the fan-out area comprises two fan-out sub-areas symmetrical to each other relative to a symmetry axis perpendicular to the fourth boundary, the first electrode portions are symmetrical to each other relative to the symmetry axis, and the fifth portion is located between the two fan-out sub-areas.

12. The display substrate according to claim 8 , wherein the first power line comprises:
a sixth portion continuously arranged in the first peripheral area, the second peripheral area and the third peripheral area;
two seventh portions located in the fourth peripheral area, respectively connected to the sixth portion located in the first peripheral area and the third peripheral area, and extending in a direction parallel to the fourth boundary; and
an eighth portion located in the fourth peripheral area and between the two seventh portions,
wherein an orthographic projection of the sixth portion on the base substrate partially overlaps with an orthographic projection of the first portion on the base substrate and is electrically connected to the first portion, orthographic projections of the two seventh portions on the base substrate partially overlap with orthographic projections of the two second portions on the base substrate and are electrically connected to the two second portions respectively, and an orthographic projection of the eighth portion on the base substrate partially overlaps with the fifth portion and the fan-out area and the eighth

Assignees

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

Inventors

• Bai Lu
• Zhang Xin
• Yu Pengfei
• Dai Jie
• Du Sen
• Song Li
• Jiang Xiaofeng

Classifications

• H10K85/00

  Organic materials used in the body or electrodes of devices covered by this subclass · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10K59/131 Primary

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

• H10K50/84

  Passivation; Containers; Encapsulations · CPC title

• H10K59/1213

  the pixel elements being TFTs · CPC title