Organic light-emitting display and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10497900-B2
Application number	US-201916252371-A
Country	US
Kind code	B2
Filing date	Jan 18, 2019
Priority date	Nov 20, 2015
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

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 substrate comprising a first area, a second area adjacent to the first area, and a third area between the first area and the second area;
an insulating layer on the substrate, each of the substrate and the insulating layer having an opening in the first area;
a pixel array on the insulating layer, the pixel array comprising a plurality of pixels that are in the second area, a first pixel being adjacent to the third area from among the plurality of pixels and comprises a pixel electrode layer, an organic layer on the pixel electrode layer, and an opposite electrode layer on the organic layer; and
a first portion in the third area, the first portion having an under-cut step and being offset from the second area,
wherein at least one of the organic layer or the opposite electrode layer extends toward the opening and is disconnected by the first portion.

2. The organic light-emitting display of claim 1 , wherein the organic layer comprises a hole transport material, a hole injection material, an emission material, an electron transport material, and/or an electron injection material.

3. The organic light-emitting display of claim 1 , wherein the opposite electrode layer comprises aluminum (Al), magnesium (Mg), silver (Ag), lithium (Li), calcium (Ca), or a compound thereof.

4. The organic light-emitting display of claim 1 , wherein the first portion comprises a same material as that of the insulating layer.

5. The organic light-emitting display of claim 1 , wherein the insulating layer comprises a recess that is concave in a thickness direction of the insulating layer, and wherein the first portion is in the recess.

6. The organic light-emitting display of claim 1 , the first portion comprises a first sub-portion and a second sub-portion stacked on the first sub-portion, wherein the first sub-portion and the second sub-portion comprise different materials from each other.

7. The organic light-emitting display of claim 6 , wherein a thickness of the first sub-portion is greater than a thickness of the at least one of the organic layer or the opposite electrode layer.

8. The organic light-emitting display of claim 6 , wherein the first sub-portion comprises a metal, and the second sub-portion comprises an insulation material.

9. The organic light-emitting display of claim 6 , wherein a width of the first sub-portion is less than a width of the second sub-portion.

10. The organic light-emitting display of claim 1 , further comprising a protection layer that covers the pixel array and comprises an inorganic protection layer and an organic protection layer.

11. The organic light-emitting display of claim 10 , wherein the organic protection layer comprises organic-inorganic composite particles.

12. An organic light-emitting display comprising:
a substrate comprising a first area, a second area adjacent to the first area, and a third area between the first area and the second area;
at least one insulating layer on the substrate;
a plurality of pixels on the at least one insulating layer, the plurality of pixels being in the second area, a first pixel being adjacent to the third area from among the plurality of pixels and comprising a pixel electrode layer, an opposite electrode layer on the pixel electrode layer, and an intermediate layer between the pixel electrode layer and the opposite electrode layer, wherein the intermediate layer comprises at least one organic layer; and
an under-cut step being offset with respect to the second area, the under-cut step being located in the third area and disconnecting the at least one organic layer from a corresponding layer extending toward the first area.

13. The organic light-emitting display of claim 12 , wherein the at least one organic layer comprises a hole transport material, a hole injection material, an electron transport material, and/or an electron injection material.

14. The organic light-emitting display of claim 12 , wherein the opposite electrode layer is disconnected by the under-cut step.

15. The organic light-emitting display of claim 12 , wherein the opposite electrode layer comprises aluminum (Al), magnesium (Mg), silver (Ag), lithium (Li), calcium (Ca), or a compound thereof.

16. The organic light-emitting display of claim 12 , wherein the substrate has an opening in the first area.

17. The organic light-emitting display of claim 12 , wherein the at least one insulating layer has an opening in the first area.

18. The organic light-emitting display of claim 12 , wherein the at least one insulating layer comprises an inorganic insulating layer and/or an organic insulating layer.

19. The organic light-emitting display of claim 12 , further comprising a protection layer that covers the plurality of pixels.

20. The organic light-emitting display of claim 19 , wherein the protection layer covers a disconnected region of the at least one organic layer.

21. The organic light-emitting display of claim 20 , wherein the protection layer comprises an inorganic protection layer and an organic protection layer.

22. The organic light-emitting display of claim 12 , wherein the under-cut step is formed in a recess of the at least one insulating layer.

23. The organic light-emitting display of claim 12 , wherein the under-cut step comprises a first sub-portion and a second sub-portion that extends farther than the first sub-portion in a width direction.

24. The organic light-emitting display of claim 23 , wherein the first sub-portion and the second sub-portion comprise different materials from each other.

25. The organic light-emitting display of claim 23 , wherein a thickness of the first sub-portion is greater than a thickness of the at least one of the organic layer or the opposite electrode layer.

Assignees

• Samsung Display Co Ltd

Inventors

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

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H01L51/5253 Primary

  Electricity · mapped topic

• H01L27/3258

  Electricity · mapped topic

• H01L51/0096

  Electricity · mapped topic

• Y02P70/521

  Cross-Sectional Technologies · mapped topic