Display substrate having barrier layers in peripheral area, and display apparatus

Patent metadata

Field	Value
Publication number	US-12289978-B2
Application number	US-202117784643-A
Country	US
Kind code	B2
Filing date	Aug 17, 2021
Priority date	Aug 17, 2021
Publication date	Apr 29, 2025
Grant date	Apr 29, 2025

Abstract

A display substrate includes at least two barrier layers in a peripheral area of the display substrate. The at least two barrier layers includes a first barrier layer forming an enclosure; and a third barrier layer on a side of the first barrier layer closer to a display area. The third barrier layer includes one or more discontinuous portions.

First claim

What is claimed is:

1. A display substrate, comprising:
at least two barrier layers in a peripheral area of the display substrate;
a second barrier layer in the peripheral area; and
at least one branch barrier connected to and extending away from the second barrier layer;
wherein the at least two barrier layers comprise:
a first barrier layer forming an enclosure; and
a third barrier layer on a side of the first barrier layer closer to a display area;
wherein the third barrier layer comprises one or more discontinuous portions;
wherein the third barrier layer comprises at least a first portion; and
the first portion is between a portion of the first barrier layer and the second barrier layer;
wherein a respective branch barrier comprises a first segment and a second segment; and
extension directions of the first segment and the second segment are different from each other;
wherein the third barrier layer comprises a first end segment and a first main segment; and
extension directions of the first end segment and the first main segment are different from each other;
wherein extension directions of the first segment and the first main segment are substantially parallel to each other; and
extension directions of the second segment and the first end segment are substantially parallel to each other;
wherein in plan view of the display substrate, an extension direction of the second segment is more toward the first main segment relative to an extension direction of the first segment; and
in plan view of the display substrate, an extension direction of the first end segment is more toward the first segment relative to an extension direction of the first main segment.

2. The display substrate of claim 1 , wherein the third barrier layer comprises at least a first portion; and
the first portion is in a peripheral sub-area in which at least a signal line layer is absent.

3. The display substrate of claim 2 , wherein the first portion is in a peripheral sub-area in which a first signal line layer, a second signal line layer, and an anode material layer are absent.

4. The display substrate of claim 2 , wherein the third barrier layer further comprises at least a second portion outside the peripheral sub-area;
the first portion and the second portion each comprises at least one common insulating sub-layer; and
the second portion comprises at least one metallic sub-layer that is absent in the first portion.

5. The display substrate of claim 1 , comprising a staggered structure;
wherein the staggered structure comprises at least a portion of the third barrier layer and at least one branch barrier; and
the portion of the third barrier layer and the at least one branch barrier are staggered with respect to each other.

6. The display substrate of claim 5 , further comprising a second barrier layer in the peripheral area;
wherein the staggered structure further comprises a portion of the second barrier layer; and
the at least one branch barrier connected to and extending away from the second barrier layer.

7. The display substrate of claim 6 , wherein the third barrier layer comprises at least a first portion and a second portion discontinued from each other; and
the portion of the second barrier layer that is part of the staggered structure is in a region between the first portion and the second portion where the third barrier layer is discontinued.

8. The display substrate of claim 7 , wherein the at least one branch barrier comprises a first branch barrier and a second branch barrier respectively connected to and extending away from the portion of the second barrier layer that is part of the staggered structure;
wherein, in the staggered structure, the first portion and the first branch barrier are staggered with respect to each other; and
the second portion and the second branch barrier are staggered with respect to each other.

9. The display substrate of claim 1 , wherein the second barrier layer is connected to the first barrier layer; and
the second barrier layer and the portion of the first barrier layer form a sub-enclosure enclosing the first portion.

10. The display substrate of claim 6 , wherein the second barrier layer is along an edge of at least a signal line layer; and
the second barrier layer is in contact with the signal line layer.

11. The display substrate of claim 1 , further comprises at least a first branch barrier and a second branch barrier connected to and extending away from the second barrier layer, respectively;
wherein the first branch barrier is inside a sub-enclosure formed by the second barrier layer and the portion of the first barrier layer enclosing the first portion; and
the second branch barrier is outside the sub-enclosure.

12. The display substrate of claim 1 , further comprises at least a first branch barrier and a second branch barrier connected to and extending away from the second barrier layer, respectively;
wherein extension lengths of the first branch barrier and the second branch barrier are different from each other.

13. The display substrate of claim 1 , wherein the first barrier layer comprises at least a first-first barrier portion and a second-first barrier portion;
the first-first barrier portion and the second-first barrier portion each comprises a plurality of common insulating sub-layers; and
the second-first barrier portion comprises at least one metallic sub-layer that is absent in the first-first barrier portion.

14. The display substrate of claim 13 , wherein the first-first barrier portion and a second barrier layer form a sub-enclosure enclosing a first portion of the third barrier layer.

15. The display substrate of claim 1 , further comprising a second barrier layer in the peripheral area;
wherein the third barrier layer comprises a first portion, a second portion, and a third portion; and
the first portion is spaced apart from the second portion by the second barrier layer, and spaced apart from the third portion by the second barrier layer.

16. The display substrate of claim 15 , wherein the second portion and the third portion are at least partially in two corner regions of the display substrate, respectively;
wherein the display substrate further comprises:
one or more branch barriers connected to and extending away from a portion of the second barrier layer where the first portion is spaced apart from the second portion; and
one or more branch barriers connected to and extending away from a portion of the second barrier layer where the first portion is spaced apart from the third portion.

17. A display apparatus, comprising the display substrate of claim 1 , and one or more integrated circuits connected to the display substrate.

Assignees

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

Inventors

• Bai Lu
• Zhou Yang
• Zhang Xin
• Dai Junxiu
• Zhang Yi
• Shang Tinghua
• Zhang Bo
• Huang Yao
• Liu Song

Classifications

• H10K59/131

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

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10K59/873 Primary

  Encapsulations · CPC title