Display device including multi-recess surrounding module hole

Patent metadata

Field	Value
Publication number	US-11903236-B2
Application number	US-201917265336-A
Country	US
Kind code	B2
Filing date	Apr 5, 2019
Priority date	Aug 2, 2018
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

A display device includes: a base substrate including a front surface and a rear surface, and including a display region and a peripheral region adjacent to the display region in a plan view; an organic light-emitting element on the display region; and a sealing layer on the organic light-emitting element. The base substrate includes: a module hole in the display region, and passing through the front surface and the rear surface; a first recess at the display region and recessed from the front surface, the first recess surrounding the module hole in the plan view; and a second recess at the display region and recessed from the front surface, the second recess surrounding the first recess in the plan view. The first recess and the second recess have different widths from each other in a direction parallel to the front surface.

First claim

The invention claimed is:

1. A display device comprising:
a base substrate including a front surface and a rear surface, and comprising a display region and a peripheral region adjacent to the display region in a plan view;
an organic light-emitting element on the display region of the base substrate; and
a sealing layer on the organic light-emitting element,
wherein the base substrate comprises:
a module hole in the display regions, and passing through the front surface and the rear surface of the base substrate;
a first recess at the display region and recessed from the front surface of the base substrate, the first recess surrounding the module hole in the plan view; and
a second recess at the display region and recessed from the front surface of the base substrate, the second recess surrounding the first recess in the plan view, and

wherein the first recess and the second recess have different widths from each other in a direction parallel to the front surface of the base substrate.

2. The display device of claim 1 , wherein the first recess has a greater width than that of the second recess in the direction parallel to the front surface of the base substrate.

3. The display device of claim 1 , wherein the second recess has a greater width than that of the first recess in the direction parallel to the front surface of the base substrate.

4. The display device of claim 1 , wherein the sealing layer comprises an organic film that is filled in the second recess.

5. The display device of claim 4 , wherein the organic film is not filled in the first recess.

6. The display device of claim 4 , wherein the sealing layer further comprises:
a first inorganic film between the organic light-emitting element and the organic film; and
a second inorganic film on the organic film, and
wherein the organic film is between the first inorganic film and the second inorganic film at a region overlapping with the second recess.

7. The display device of claim 1 , wherein in the plan view,
a region between the first recess and the second recess is defined as a first region,
a region outside the second recess is defined as a second region,
a region between the first recess and the module hole is defined as a third region, and
a distance from the rear surface of the base substrate to an upper surface of the sealing layer in the first region is greater than a distance from the rear surface of the base substrate to the upper surface of the sealing layer in the third region.

8. The display device of claim 7 , further comprising an insulating layer on the base substrate,
wherein the insulating layer is located under the sealing layer in the first region, and is not located in the third region.

9. The display device of claim 7 , wherein the distance from the rear surface of the base substrate to the upper surface of the sealing layer in the first region is smaller than a distance between the rear surface of the base substrate to the upper surface of the sealing layer in the second region.

10. The display device of claim 1 , wherein:
the base substrate further comprises a third recess at the display region and recessed from the front surface of the base substrate, the third recess being between the module hole and the first recess in the plan view; and
the third recess has a smaller width than that of at least one of the first recess or the second recess in the direction parallel to the front surface of the base substrate.

11. The display device of claim 10 , wherein in the plan view,
a region between the first recess and the second recess is defined as a first region,
a region outside the second blocking recess is defined as a second region,
a region between the first recess and the third blocking recess is defined as a third region,
a region between the third blocking recess and the module hole is defined as a fourth region, and
the fourth region has a smaller minimum width than those of the first region and third region in the direction parallel to the front surface of the base substrate.

12. The display device of claim 11 , wherein the sealing layer covers an inner surface of the first recess, an inner surface of the second recess, the first region, and the second region.

13. The display device of claim 12 , wherein the sealing layer comprises:
a first inorganic film;
an organic film on the first inorganic film; and
a second inorganic film on the organic film, and
wherein the first inorganic film and the second inorganic film are in contact with each other in the first recess, and spaced apart from each other in the second recess.

14. The display device of claim 1 , wherein the base substrate comprises:
a first base layer comprising an organic material, and configured to define the rear surface of the base substrate;
a first barrier layer on the first base layer, the first barrier layer comprising an inorganic material, and configured to define the front surface of the base substrate;
a second base layer between the first base layer and the first barrier layer, and comprising an organic material; and
a second barrier layer between the first base layer and the first barrier layer, and comprising an inorganic material.

15. The display device of claim 14 , wherein:
the module hole passes through the first base layer, the second base layer, the first barrier layer, and the second barrier layer, and
each of the first and second recesses are on the first base layer and the second barrier layer.

16. The display device of claim 15 , wherein each of the first recess and the second recess comprises:
a through part passing through the first barrier layer; and
a recessed part overlapping with the through part of the first barrier layer, and defined in the second base layer, and
wherein a width of the recessed part is greater than a width of the through part of the first barrier layer.

17. The display device of claim 1 , wherein in the plan view, the module hole has a circular shape, and each of the first recess and the second recess has a circularly annular shape.

18. A display device comprising:
a base substrate including a front surface and a rear surface, and comprising a display region and a peripheral region adjacent to the display region in a plan view;
an organic light-emitting element on the display region of the base substrate; and
a sealing layer on the organic light-emitting element,
wherein the base substrate comprises:
a module hole in the display region, and passing through the front surface and the rear surface of the base substrate;
a first recess at the display region and recessed from the front surface of the base substrate, the first recess surrounding the module hole in the plan view;

a second recess at the display region and recessed from the front surface of the base substrate, the second recess surrounding the first recess in the plan view; and
a third recess at the display region and recessed from the front surface of the base substrate, the third blocking recess being between the module hole and the first recess in the plan view, and

wherein the third recess has a smaller width than that of at least one of the first recess or the second recess in a direction parallel to the front surface of the base substrate.

19. A display device comprising:
a display panel comprising:
a base substrate comprising a plurality of pixels;
a front surface comprising a display region in which the pixels are located, and a peripheral region adjacent to the display region; and
a rear surface

Assignees

• Samsung Display Co Ltd

Inventors

• Chang Moonwon
• Kim Seunghun
• Sung Woo Yong
• Kim Sooyoun
• Seo Junghan

Classifications

• H10K59/8731

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• H10K59/871

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• H10K50/841 Primary

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• H10K59/124 Primary

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• H10F39/198

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