Display device

Patent metadata

Field	Value
Publication number	US-10932376-B2
Application number	US-201916715250-A
Country	US
Kind code	B2
Filing date	Dec 16, 2019
Priority date	Feb 8, 2019
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

A display device includes a display module and a cover member disposed below the display module. The cover member includes a first upper plate disposed below the display module, a second upper plate disposed below the display module and spaced a first distance apart from the first upper plate in a first direction, a first attachment layer attached to a bottom surface of the first upper plate, a second attachment layer attached to a bottom surface of the second upper plate and spaced a second distance, which is greater than the first distance, apart from the first attachment layer in the first direction, a first lower plate attached to a bottom surface of the first attachment layer, and a second lower plate attached to a bottom surface of the second attachment layer.

First claim

What is claimed is:

1. A display device comprising:
a display module; and
a cover member disposed below the display module,
wherein the cover member comprises:
a first upper plate disposed below the display module;
a second upper plate disposed below the display module and spaced a first distance apart from the first upper plate in a first direction;
a first attachment layer attached to a bottom surface of the first upper plate;
a second attachment layer attached to a bottom surface of the second upper plate and spaced a second distance, which is greater than the first distance, apart from the first attachment layer in the first direction;
a first lower plate attached to a bottom surface of the first attachment layer; and
a second lower plate attached to a bottom surface of the second attachment layer.

2. The display device of claim 1 , wherein the second distance is in a range from about 10 mm to about 34 mm.

3. The display device of claim 1 , wherein
the display module comprises a first non-folding area, a folding area and a second non-folding area, which are sequentially defined in the first direction, and
each of the first attachment layer and the second attachment layer does not overlap the folding area on a plane.

4. The display device of claim 3 , wherein
a first end of the first attachment layer overlaps the first non-folding area while being spaced apart from a boundary between the first non-folding area and the folding area on the plane, and
a second end of the second attachment layer overlaps the second non-folding area while being spaced apart from a boundary between the second non-folding area and the folding area on the plane.

5. The display device of claim 3 , wherein the cover member comprises:
a first intermediate adhesive layer disposed between the display module and the first upper plate, and attached to the first upper plate;
a first step compensation layer disposed between the display module and the first upper plate;
a second intermediate adhesive layer disposed between the display module and the second upper plate, and attached to the second upper plate; and
a second step compensation layer disposed between the display module and the second upper plate.

6. The display device of claim 5 , wherein
both opposing surfaces of each of the first intermediate adhesive layer and the second intermediate adhesive layer have an adhesive force, and
each of the first step compensation layer and the second step compensation layer has a surface having an adhesive force less than an adhesive force of an opposing surface thereof.

7. The display device of claim 5 , wherein
the first intermediate adhesive layer overlaps the first non-folding area on the plane,
the second intermediate adhesive layer overlaps the second non-folding area on the plane, and
each of the first step compensation layer and the second step compensation layer overlaps the folding area on the plane.

8. The display device of claim 5 , wherein
the first intermediate adhesive layer has a width in the first direction, which is greater than a width of the first attachment layer in the first direction, and
the second intermediate adhesive layer has a width in the first direction, which is greater than a width of the second attachment layer in the first direction.

9. The display device of claim 5 , wherein the cover member further comprises:
a protection layer disposed below the display module; and
a cushion layer disposed below the protection layer,
wherein the first intermediate adhesive layer is attached to the cushion layer, and
the second intermediate adhesive layer is attached to the cushion layer.

10. The display device of claim 1 , wherein
the display module comprises a first non-folding area, a folding area and a second non-folding area, which are sequentially defined in the first direction, and
the cover member further comprises an intermediate adhesive layer disposed between the display module and the first upper plate and between the display module and the second upper plate, and
the first upper plate is attached to the intermediate adhesive layer in an area overlapping the first non-folding area on a plane,
the second upper plate is attached to the intermediate adhesive layer in an area overlapping the second non-folding area on the plane, and
the first upper plate and the second upper plate do not adhere to the intermediate adhesive layer in an area overlapping the folding area on the plane.

11. The display device of claim 1 , wherein each of the first attachment layer and the second attachment layer is a pressure sensitive adhesive.

12. The display device of claim 1 , wherein each of the first upper plate, the second upper plate, the first lower plate and the second lower plate is a metal plate.

13. The display device of claim 1 , wherein
the first upper plate has a first width in the first direction, which is greater than a second width of the first attachment layer in the first direction, and
the second upper plate has a third width in the first direction, which is greater than a fourth width of the second attachment layer in the first direction.

14. The display device of claim 13 , wherein
the first lower plate has a fifth width in the first direction, which is the same as the first width, and
the second lower plate has a sixth width in the first direction, which is the same as the third width.

15. A display device comprising:
a display module comprising a first non-folding area, a folding area, and a second non-folding area, which are sequentially defined in a first direction; and
a cover member disposed below the display module,
wherein the cover member comprises:
a first upper plate disposed below the first non-folding area;
a second upper plate disposed below the second non-folding area;
a first lower plate disposed below the first upper plate;
a second lower plate disposed below the second upper plate;
a first attachment layer disposed between the first upper plate and the first lower plate; and
a second attachment layer disposed between the second upper plate and the second lower plate,
wherein
the first upper plate has a width in the first direction, which is greater than a width of the first attachment layer in the first direction, and
the second upper plate has a width in the first direction, which is greater than a width of the second attachment layer in the first direction.

16. The display device of claim 15 , wherein
a center in the first direction is defined in the folding area,
a distance from the center to a first end of the first attachment layer is in a range from about 5 mm to about 17 mm, and
a distance from the center to a second end of the second attachment layer is in the range from about 5 mm to about 17 mm.

17. The display device of claim 16 , wherein
the width of the first attachment layer in the first direction is a distance from the first end of the first attachment layer to a third end, which is disposed opposite to the first end, of the first attachment layer, and
the third end overlaps an end of the first upper plate on a plane.

18. The display device of claim 15 , wherein each of the first attachment layer and the second attachment layer is a pressure sensitive adhesive.

19. The display device of claim 15 , wherein the cover member further comprises:
a first intermediate adhesive layer disposed between the display module and the first upper plate while being attached to the first upper plate;
a first step compensation layer

Assignees

• Samsung Display Co Ltd

Inventors

• Park Dongjin
• Ryou Hansun
• Seo Dongwoo
• Shin Jaiku
• Choi Sungchul

Classifications

• H10K59/873

  Encapsulations · CPC title

• H05K5/0017 Primary

  with operator interface units · CPC title

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• G09F9/301 Primary

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• G06F1/1641

  the display being formed by a plurality of foldable display components (G06F1/1647 takes precedence) · CPC title