Organic light-emitting display with stepped portion surrounding through hole

Patent metadata

Field	Value
Publication number	US-11711940-B2
Application number	US-202017063476-A
Country	US
Kind code	B2
Filing date	Oct 5, 2020
Priority date	Nov 20, 2015
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

An organic light-emitting display including a substrate, an insulating layer on the substrate, the substrate and the insulating layer having an opening therethrough penetrating, a pixel array on the insulating layer, the pixel array including a plurality of pixels that surround the opening, a first pixel adjacent to the opening from among the plurality of pixels includes a pixel electrode layer, an intermediate layer on the pixel electrode layer, and an opposite electrode layer on the intermediate layer, and a stepped portion on the substrate and adjacent to the opening, the stepped portion having an under-cut step, wherein the intermediate layer including an organic emission layer, and wherein at least one of the intermediate layer and the opposite electrode layer extends toward the opening and is disconnected by the stepped portion.

First claim

What is claimed is:

1. An organic light-emitting display comprising:
a first area having a through hole;
a second area around the first area, wherein an array of pixels are arranged in the second area, each of the pixels comprising a pixel electrode layer over a first insulation layer, an opposite electrode layer facing the pixel electrode layer, and an intermediate layer between the pixel electrode layer and the opposite electrode layer;
a third area between the first area and the second area; and
a stepped portion in the third area, the stepped portion comprising a first layer and a second layer over the first layer, wherein a width of an upper surface of the first layer is less than a width of a lower surface of the second layer,
wherein the intermediate layer comprises at least one organic layer extending toward the through hole and being disconnected by the stepped portion.

2. The organic light-emitting display of claim 1 , wherein the second layer comprises a material different from a material of the first layer.

3. The organic light-emitting display of claim 2 , wherein the stepped portion comprises an insulating material.

4. The organic light-emitting display of claim 1 , wherein the at least one organic layer comprises one or more layers selected from a hole transport layer, a hole injection layer, an electron injection layer, and an electron transport layer.

5. The organic light-emitting display of claim 1 , wherein the opposite electrode layer extends toward the through hole and is disconnected by the stepped portion.

6. The organic light-emitting display of claim 5 , wherein the opposite electrode layer comprises at least one material selected from Li, Ca, LiF, Al, Ag, and Mg.

7. The organic light-emitting display of claim 1 , further comprising:
a protection layer over the array of pixels, the protection layer comprising an inorganic layer and an organic layer on the inorganic layer.

8. The organic light-emitting display of claim 7 , wherein:
the inorganic layer of the protection layer covers the stepped portion.

9. An organic light-emitting display comprising:
a first area having a through hole;
a second area around the first area, wherein an array of pixels are arranged in the second area, each of the pixels comprising a pixel electrode layer, an opposite electrode layer facing the pixel electrode layer, and an intermediate layer between the pixel electrode layer and the opposite electrode layer;
a third area between the first area and the second area; and
a stepped portion in the third area, the stepped portion comprising a first layer and a second layer that is over the first layer, the second layer comprising a material different from a material of the first layer, wherein an edge part of the second layer extends beyond an edge of the first layer,
wherein the intermediate layer comprises at least one organic layer extending toward the through hole and being disconnected by the stepped portion.

10. The organic light-emitting display of claim 9 , wherein the at least one organic layer comprises one or more layers selected from a hole transport layer, a hole injection layer, an electron injection layer, and an electron transport layer.

11. The organic light-emitting display of claim 9 , wherein the opposite electrode layer covers the second area, extends toward the through hole, and is disconnected by the stepped portion.

12. The organic light-emitting display of claim 11 , wherein the opposite electrode layer comprises at least one material selected from Li, Ca, LiF, Al, Ag, and Mg.

13. The organic light-emitting display of claim 9 , wherein the stepped portion comprises an insulating material.

14. The organic light-emitting display of claim 9 , further comprising:
a protection layer over the array of pixels, the protection layer comprising an inorganic layer and an organic layer on the inorganic layer.

15. The organic light-emitting display of claim 14 , wherein:
the inorganic layer of the protection layer covers the stepped portion.

16. The organic light-emitting display of claim 14 , wherein:
the inorganic layer of the protection layer has a hole corresponding to the first area.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Jonghyun
• Kang Kinyeng
• Kim Sunkwang
• Sim Suyeon

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10K50/844 Primary

  Encapsulations · CPC title

• H10K59/124 Primary

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

• H10K77/10

  Substrates, e.g. flexible substrates · CPC title

• Y02E10/549

  Organic PV cells · CPC title