Organic light-emitting display panel and display device

Patent metadata

Field	Value
Publication number	US-11871629-B2
Application number	US-202217731095-A
Country	US
Kind code	B2
Filing date	Apr 27, 2022
Priority date	Jun 27, 2019
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

Provided are an organic light-emitting display panel and a display device. The organic light-emitting display panel includes: a plurality of organic light-emitting units, a first display area and a second display area. The plurality of organic light-emitting units includes first organic light-emitting units in the first display area and second organic light-emitting units in the second display area. The first organic light-emitting units share a first cathode. The second organic light-emitting units include at least one organic light-emitting unit group, each of the at least one organic light-emitting unit group includes at least one organic light-emitting unit. The at least one organic light-emitting unit in a same organic light-emitting unit group shares a second cathode. The second cathode has a zigzag edge segment.

First claim

What is claimed is:

1. An organic light-emitting display panel, comprising:
a plurality of organic light-emitting units;
a first display area; and
a second display area;
wherein the plurality of organic light-emitting units comprises first organic light-emitting units in the first display area and second organic light-emitting units in the second display area, and the second display area is less than the first display area;
wherein the first organic light-emitting units share a first cathode;
wherein the second organic light-emitting units comprise at least one organic light-emitting unit group, each comprising at least one organic light-emitting unit; wherein in a same organic light-emitting unit group comprising a plurality of organic light-emitting units, the plurality of organic light-emitting units in the same organic light-emitting unit group share a second cathode; wherein the second cathode has a zigzag edge segment.

2. The organic light-emitting display panel of claim 1 , wherein two adjacent second cathodes are spaced apart by a first gap; wherein the zigzag edge segment is located in the first gap.

3. The organic light-emitting display panel of claim 1 , further comprising: a negative-supply-voltage signal transmission line located in a bezel area of the organic light-emitting display panel,
wherein the second display area further comprises a conductive connection portion, wherein the conductive connecting portion is electrically connected to the negative-supply-voltage signal transmission line and the second cathode.

4. The organic light-emitting display panel of claim 3 , wherein each of the plurality of organic light-emitting units comprises an anode, and the conductive connecting portion and the anode are disposed in a same layer.

5. The organic light-emitting display panel of claim 3 , wherein the conductive connecting portion is electrically connected to the second cathode through a first via, and wherein the first via is located outside a light-emitting zone of each of the plurality of organic light-emitting units.

6. The organic light-emitting display panel of claim 1 , further comprising: a negative-supply-voltage signal transmission line located in a bezel area of the organic light-emitting display panel, wherein the second cathode is electrically connected to the negative-supply-voltage signal transmission line through a third via.

7. A display device, comprising: an organic light-emitting display panel;
wherein the organic light-emitting display panel comprises a plurality of organic light-emitting units, a first display area and a second display area;
wherein the plurality of organic light-emitting units comprises first organic light-emitting units in the first display area and second organic light-emitting units in the second display area, and the second display area is less than the first display area;
wherein the first organic light-emitting units share a first cathode;
wherein the second organic light-emitting units comprise at least one organic light-emitting unit group, each comprising at least one organic light-emitting unit; wherein in a same organic light-emitting unit group comprising a plurality of organic light-emitting units, the plurality of organic light-emitting units in the same organic light-emitting unit group share a second cathode; wherein the second cathode has a zigzag edge segment.

8. The display device of claim 7 , wherein two adjacent second cathodes are spaced apart by a first gap; wherein the zigzag edge segment is located in the first gap.

9. The display device of claim 7 , wherein the organic light-emitting display panel further comprises: a negative-supply-voltage signal transmission line located in a bezel area or the organic light-emitting display panel,
wherein the second display area further comprises a conductive connection portion, wherein the conductive connecting portion is electrically connected to the negative-supply-voltage signal transmission line and the second cathode.

10. The display device of claim 9 , wherein each of the plurality of organic light-emitting units comprises an anode, and the conductive connecting portion and the anode are disposed in a same layer.

11. The display device of claim 9 , wherein the conductive connecting portion is electrically connected to the second cathode through a first via, and wherein the first via is located outside a light-emitting zone of each of the plurality of organic light-emitting units.

12. The organic light-emitting display panel of claim 7 , wherein the organic light-emitting display panel further comprises: a negative-supply-voltage signal transmission line located in a bezel area of the organic light-emitting display panel, wherein the second cathode is electrically connected to the negative-supply-voltage signal transmission line through a third via.

13. An organic light-emitting display panel, comprising:
a plurality of organic light-emitting units;
a first display area; and
a second display area;
wherein the plurality of organic light-emitting units comprises first organic light-emitting units in the first display area and second organic light-emitting units in the second display area;
wherein the first organic light-emitting units share a first cathode;
wherein the second organic light-emitting units comprise at least one organic light-emitting unit group, each comprising at least one organic light-emitting unit; wherein in a same organic light-emitting unit group comprising a plurality of organic light-emitting units, the plurality of organic light-emitting units in the same organic light-emitting unit group share a second cathode; wherein the second cathode has a zigzag edge segment;
wherein the organic light-emitting display panel further comprises: a negative-supply-voltage signal transmission line located in a bezel area of the organic light-emitting display panel,
wherein the second display area further comprises a conductive connection portion, wherein the conductive connecting portion is electrically connected to the negative-supply-voltage signal transmission line and the second cathode;
wherein the conductive connecting portion is electrically connected to the second cathode through a first via, and wherein the first via is located outside a light-emitting zone of each of the plurality of organic light-emitting units.

14. A display device, comprising: the organic light-emitting display panel of claim 13 .

15. The organic light-emitting display panel of claim 13 , wherein two adjacent second cathodes are spaced apart by a first gap; wherein the zigzag edge segment is located in the first gap.

16. A display device, comprising: the organic light-emitting display panel of claim 15 .

17. The organic light-emitting display panel of claim 13 , wherein each of the plurality of organic light-emitting units comprises an anode, and the conductive connecting portion and the anode are disposed in a same layer.

18. A display device, comprising: the organic light-emitting display panel of claim 17 .

19. The organic light-emitting display panel of claim 13 , further comprising: a negative-supply-voltage signal transmission line located in a bezel area of the organic light-emitting display panel, wherein the second cathode is electrically connected to the negative-supply-voltage signal transmission line through a third via.

20. A display device, comprising: the organic light-emitting display panel of claim 19 .

Assignees

• Wuhan Tianma Micro Electronics Co Ltd

Inventors

• Cui Ruili
• Ma Yangzhao
• Zhu Jiazhu
• Wang Yongzhi
• Yuan shanfu
• Chen Yingjie
• Peng Tao
• Zhou Ruiyuan

Classifications

• H10K59/8052

  Cathodes · CPC title

• H10K59/131 Primary

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

• C23C14/042

  using masks · CPC title

• H10K50/82

  Cathodes · CPC title

• H10K50/84

  Passivation; Containers; Encapsulations · CPC title