Display device

Patent metadata

Field	Value
Publication number	US-11656656-B2
Application number	US-202117193841-A
Country	US
Kind code	B2
Filing date	Mar 5, 2021
Priority date	May 26, 2020
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

A display device includes a display panel including a rear surface and a front surface, where the front surface is provided with a display surface and including a folding axis extending in a first direction, a first barrier member disposed on the rear surface of the display panel and having a modulus of about 1 GPa to about 300 GPa, a first coupling member disposed on a rear surface of the first barrier member, and a metal plate disposed on a rear surface of the first coupling member and including a first plate portion and a second plate portion which are arranged in a second direction crossing the first direction and a connection portion connecting the first plate portion and the second plate portion, where the first coupling member does not overlap the connection portion in a plan view.

First claim

What is claimed is:

1. A display device, comprising:
a display panel including a rear surface and a front surface, the front surface being provided with a display surface and including a folding axis extending in a first direction;
a first barrier member disposed on the rear surface of the display panel and having a modulus of about 1 gigapascals (GPa) to about 300 GPa;
a first coupling member disposed on a rear surface of the first barrier member; and
a metal plate disposed on a rear surface of the first coupling member and including a first plate portion and a second plate portion which are arranged in a second direction crossing the first direction and a connection portion connecting the first plate portion and the second plate portion,
wherein the first coupling member does not overlap the connection portion in a plan view, and
wherein in a state where the display panel is folded, the connection portion of the metal plate contacts the first barrier member.

2. The display device of claim 1 ,
wherein the first barrier member has the modulus of about 1 GPa to about 10 GPa.

3. The display device of claim 2 ,
wherein the first barrier member has a thickness of about 25 micrometers (μm) to about 80 μm.

4. The display device of claim 3 ,
wherein the first barrier member includes at least one selected from polyimide, polyacrylate, polymethyl methacrylate, polycarbonate, polyethylene terephthalate, polyethylene naphthalate, polyether sulfone, and a cycloolefin copolymer.

5. The display device of claim 1 ,
wherein the first barrier member has the modulus of about 10 GPa to about 300 GPa.

6. The display device of claim 5 ,
wherein the first barrier member has a thickness of about 10 μm to about 50 μm.

7. The display device of claim 6 ,
wherein the first barrier member includes at least one selected from steel used stainless (SUS), invar, aluminum, iron, chromium, carbon, nickel, silicon, manganese, and molybdenum.

8. The display device of claim 1 ,
wherein the first coupling member includes a first coupling portion overlapping the first plate portion and a second coupling portion spaced apart from the first coupling portion and overlapping the second plate portion in the plan view.

9. The display device of claim 8 ,
wherein the first coupling portion and the second coupling portion are spaced apart from each other by a first spacing interval, and a width of the first spacing interval is equal to or greater than a width of the connection portion in the second direction.

10. The display device of claim 8 , further comprising:
a second coupling member disposed between the display panel and the first barrier member,
wherein a sum of a thickness of the first coupling member and a thickness of the second coupling member is greater than about 1 μm and equal to or less than about 80 μm.

11. The display device of claim 10 ,
wherein the thickness of the second coupling member is about 1 μm and about 50 μm.

12. A display device, comprising:
a display panel including a rear surface and a front surface, the front surface being provided with a display surface and including a folding axis extending in a first direction;
a first barrier member disposed on the rear surface of the display panel and having a modulus of about 1 gigapascals (GPa) to about 300 GPa;
a first coupling member including a first coupling portion and a second coupling portion disposed on a rear surface of the first barrier member; and
a metal plate disposed on a rear surface of the first coupling member and including a first plate portion and a second plate portion which are arranged in a second direction crossing the first direction and a connection portion connecting the first plate portion and the second plate portion,
a third coupling member disposed on a rear surface of the metal plate;
a second barrier member disposed on a rear surface of the third coupling member;
a fourth coupling member disposed on a rear surface of the second barrier member; and
a heat dissipation member disposed on a rear surface of the fourth coupling member,
wherein the first coupling member does not overlap the connection portion in a plan view.

13. The display device of claim 12 ,
wherein the second barrier member overlaps the first plate portion, the second plate portion, and the connection portion in the plan view.

14. The display device of claim 12 ,
wherein the heat dissipation member includes a first heat dissipation portion overlapping the first plate portion and a second heat dissipation portion spaced apart from the first heat dissipation portion and overlapping the second plate portion in the plan view.

15. The display device of claim 14 ,
wherein a first spacing interval between the first heat dissipation portion and the second heat dissipation portion overlaps the connection portion in the plan view.

16. The display device of claim 15 ,
wherein the fourth coupling member includes a third coupling portion overlapping the first plate portion and a fourth coupling portion spaced apart from the third coupling portion and overlapping the second plate portion in the plan view,
the third coupling portion and the fourth coupling portion are spaced apart from each other by a second spacing interval, and
the second spacing interval is equal to or greater than a width of the connection portion.

17. The display device of claim 16 , further comprising: a fifth coupling member disposed on a rear surface of the heat dissipation member; and
a cushion member disposed on a rear surface of the fifth coupling member,
wherein the cushion member includes a first cushion portion overlapping the first plate portion and a second cushion portion spaced apart from the first cushion portion and overlapping the second plate portion in the plan view,
the first cushion portion and the second cushion portion are spaced apart from each other by a third spacing interval, and
the third spacing interval overlaps the connection portion in the plan view.

18. A display device, comprising:
a display panel including a rear surface and a front surface, the front surface being provided with a display surface and including a folding axis extending in a first direction;
a first coupling member and a second coupling member, the second coupling member disposed on the rear surface of the display panel;
a first barrier member disposed on a rear surface of the second coupling member; the first coupling member disposed on a rear surface of the first barrier member;
and a metal plate disposed on a rear surface of the first coupling member and including a first plate portion and a second plate portion which are arranged in a second direction crossing the first direction and a connection portion connecting the first plate portion and the second plate portion, wherein a sum of a thickness of the first coupling member and a thickness of the second coupling member is greater than about 1 μm and equal to or less than about 80 μm, and wherein in a state where the display panel is folded, the connection portion of the metal plate contacts the first barrier member.

19. The display device of claim 18 ,
wherein the thickness of the second coupling member is about 1 μm and about 50 μm.

20. The display device of claim 18 ,
wherein the first coupling member does not overlap the connection portion of the metal plate in a plan view.

Assignees

• Samsung Display Co Ltd

Inventors

• Shin Jai Ku
• Park Dong Jin
• Seo Dong Woo
• Choi Sung Chul

Classifications

• H05K7/20963

  Heat transfer by conduction from internal heat source to heat radiating structure (H05K7/20972 takes precedence) · CPC title

• G06F1/203

  for portable computers, e.g. for laptops · CPC title

• G06F1/1652 Primary

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

• Y02E10/549

  Organic PV cells · CPC title

• H10K2102/311

  Flexible OLED · CPC title