Organic light-emitting display with structure for preventing moisture infiltration and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-12289948-B2
Application number	US-202318357880-A
Country	US
Kind code	B2
Filing date	Jul 24, 2023
Priority date	Nov 20, 2015
Publication date	Apr 29, 2025
Grant date	Apr 29, 2025

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 having a through hole passing from a top surface of the substrate to a bottom surface of the substrate;
a plurality of light-emitting diodes arranged in a display area surrounding the through hole, the plurality of light-emitting diodes comprising a light-emitting diode, the light-emitting diode 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, the intermediate layer comprising an organic emission layer and a functional layer; and

a stepped portion in an intermediate area between the through hole and the display area, the stepped portion having an undercut structure,
wherein at least one of the functional layer or the opposite electrode layer extends toward the through hole and is disconnected by the stepped portion.

2. The organic light-emitting display of claim 1 , wherein the stepped portion comprises an insulating material.

3. The organic light-emitting display of claim 1 , wherein the stepped portion comprises a metal material.

4. The organic light-emitting display of claim 1 , wherein the stepped portion comprises a first portion and a second portion over the first portion, and
wherein an edge part of the second portion protrudes in a width direction of the second portion beyond a point at which a lateral surface of the first portion and a bottom surface of the second portion meet.

5. The organic light-emitting display of claim 4 , wherein a material of the first portion is different from a material of the second portion.

6. The organic light-emitting display of claim 1 , wherein the stepped portion comprises a first portion and a second portion over the first portion, and
wherein a width of a top surface of the first portion is less than a width of the bottom surface of the second portion.

7. The organic light-emitting display of claim 6 , wherein a material of the first portion is different from a material of the second portion.

8. The organic light-emitting display of claim 1 , wherein the functional layer comprises at least one of a hole transport layer, a hole injection layer, an electron injection layer, or an electron transport layer.

9. The organic light-emitting display of claim 1 , wherein the functional layer comprises a plurality of sections separated from each other by the undercut structure of the stepped portion.

10. The organic light-emitting display of claim 1 , wherein the opposite electrode layer comprises a plurality of sections separated from each other by the undercut structure of the stepped portion.

11. The organic light-emitting display of claim 1 , further comprises:
a protection layer over the plurality of light-emitting diodes, the protection layer comprising an inorganic layer and an organic layer on the inorganic layer.

12. The organic light-emitting display of claim 11 , wherein the inorganic layer of the protection layer extends toward the through hole and overlaps the stepped portion.

13. The organic light-emitting display of claim 11 , wherein the organic layer of the protection layer extends to the intermediate area and overlaps the stepped portion.

14. An organic light-emitting display comprising:
a substrate having a through hole passing from a top surface of the substrate to a bottom surface of the substrate;
a plurality of light-emitting diodes arranged in a display area surrounding the through hole, the plurality of light-emitting diodes comprises a light-emitting diode that comprises 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, the intermediate layer comprising an organic emission layer and a functional layer;
a recess in an intermediate area between the through hole and the display area, and having an undercut structure; and
a protection layer over the plurality of light-emitting diodes and comprising an inorganic layer and an organic layer over the inorganic layer,
wherein at least one of the functional layer or the opposite electrode layer extends toward the through hole and is disconnected by the undercut structure of the recess.

15. The organic light-emitting display of claim 14 , wherein the functional layer comprises a plurality of sections that are separated from each other by the undercut structure of the recess, and
wherein the inorganic layer of the protection layer extends toward the intermediate area, and the plurality of sections of the functional layer is overlapped by the inorganic layer of the protection layer.

16. The organic light-emitting display of claim 15 , wherein the organic layer of the protection layer extends to the intermediate area, and the plurality of sections of the functional layer is overlapped by the organic layer of the protection layer.

17. The organic light-emitting display of claim 15 , wherein the opposite electrode layer comprises a plurality of sections that are separated from each other by the undercut structure of the recess, and
wherein the plurality of sections of the opposite electrode layer is respectively on the plurality of sections of the functional layer and is overlapped by the inorganic layer of the protection layer.

18. The organic light-emitting display of claim 14 , further comprises a first portion and a second portion directly over the first portion, and
wherein an edge part of the second portion protrudes in a width direction of the recess beyond a point at which a lateral surface of the first portion and a bottom surface of the second portion meet.

19. The organic light-emitting display of claim 18 , wherein a material of the first portion is different from a material of the second portion.

20. The organic light-emitting display of claim 18 , wherein the second portion comprises an insulating material.

21. The organic light-emitting display of claim 14 , further comprises a first portion and a second portion directly over the first portion, and
wherein an edge part of the second portion protrudes in a width direction of the second portion beyond a point at which a lateral surface of the first portion and a top surface of the first portion meet.

22. The organic light-emitting display of claim 21 , wherein a material of the first portion is different from a material of the second portion.

23. The organic light-emitting display of claim 14 , wherein the functional layer of the intermediate layer comprises at least one of a hole transport layer, a hole injection layer, an electron injection layer, or an electron transport layer.

24. An electronic device comprising:
an organic light-emitting display comprising a first area, a display area, and an intermediate area between the first area and the display area, the first area being surrounded by the display area where a plurality of light-emitting diodes is arranged; and
a component corresponding to the first area of the organic light-emitting display,
wherein the organic light-emitting display comprises:
a substrate having a through hole passing from a top surface of the substrate to a bottom surface of the substrate, the through hole being located in the first area of the organic light-emitting display;
a plurality of pixel electrode layers corresponding to the plurality of light-emitting diodes,
an op

Assignees

• Samsung Display Co Ltd

Inventors

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

Classifications

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• Y02E10/549

  Organic PV cells · 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

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title