IP Library › Granted Patent US 11,589,465
Granted Patent B2
US 11,589,465 · App. 17/214,514 · Granted Feb 21, 2023

Display device

Inventors: Dong Jin Park (Seongnam-si, KR); Han Sun Ryou (Seoul, KR); Min Gu Kim (Seoul, KR)
Assignee: Samsung Display Co., Ltd.
H05K5/0017H01L51/5237H01L27/3244H01L2251/5338
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Quick Facts
Patent No.
US 11,589,465
App. No.
17/214,514
Granted
Feb 21, 2023
Kind
B2
Abstract

A display device includes: a panel assembly including a display panel; a bracket to which the panel assembly is attached; and a buffer layer between the panel assembly and the bracket, and the buffer layer includes: a first portion having a first elastic modulus; and a second portion surrounded by the first portion and having a second elastic modulus that is less than the first elastic modulus.

Claims (41)

1. A display device comprising:

a display panel;

a bracket overlapping the display panel;

a chassis between the display panel and the bracket and comprising an inner portion and an outer portion; and

a buffer layer between the chassis and the bracket,

wherein the buffer layer comprises:

a first portion overlapping the outer portion and having a first elastic modulus; and

a second portion overlapping the inner portion and having a second elastic modulus that is less than the first elastic modulus.

2. The display device of claim 1 , wherein

a distance between the first portion and the chassis is the same as a distance between the second portion and the chassis.

3. The display device of claim 1 , wherein

the display panel comprises a bending area, and

the chassis has an opening overlapping the bending area.

4. The display device of claim 1 , wherein the second portion is at least partially surrounded by the first portion.

5. The display device of claim 1 , wherein the second portion is spaced apart from the first portion.

6. The display device of claim 1 , wherein

at least part of the first portion and at least part of the second portion are disposed at a same distance from the chassis.

7. The display device of claim 1 , wherein the buffer layer further comprises a third portion at least partially surrounded by the second portion and having a third elastic modulus that is less than the second elastic modulus.

8. The display device of claim 1 , wherein the first portion is located along an edge of the display panel.

9. The display device of claim 1 , wherein

the display panel comprises a display area to display an image, and a non-display area around the display area, and

the first portion overlaps with the non-display area.

10. The display device of claim 9 , wherein the second portion overlaps with the display area.

11. The display device of claim 1 , wherein the first elastic modulus is 1000 MPa or more, and the second elastic modulus is 5 MPa or less.

12. The display device of claim 1 , wherein the first portion comprises a polymer or a metal.

13. The display device of claim 1 , wherein the second portion comprises a foam resin.

14. A foldable display comprising:

a display panel comprising a bending area;

a bracket overlapping the display panel;

a chassis between the display panel and the bracket and comprising an inner portion and an outer portion, the chassis comprising an opening overlapping the bending area; and

a buffer layer between the chassis and the bracket and comprising a first portion overlapping the outer portion and a second portion overlapping the inner portion,

wherein a distance between at least part of the first portion and the chassis is the same as a distance between at least part of the second portion and the chassis, and

the first portion has a rigidity that is greater than a rigidity of the second portion.

15. The display device of claim 14 , wherein the first portion at least partially surrounds the second portion, and the first portion is spaced apart from the second portion.

16. The display device of claim 14 , wherein the first portion has an elastic modulus that is 1000 MPa or more, and the second portion has an elastic modulus that is 5 MPa or less.

17. The display device of claim 14 , wherein the first portion comprises a polymer or a metal.

18. The display device of claim 14 , wherein the second portion comprises a foam resin.

19. The display device of claim 14 , wherein the buffer layer further comprises a third portion having a rigidity that is less than the rigidity of the second portion, the third portion being closer to a center of the display panel than the second portion.

20. The display device of claim 14 , wherein

the display panel comprises a display area to display an image, and a non-display area around the display area, and

the first portion overlaps with the non-display area, and the second portion overlaps with the display area.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 24, 2021
From: PARK, DONG JIN; RYOU, HAN SUN; KIM, MIN GU
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 056328/0668 →
Priority Claims (1)
KR 10-2018-0097452 · Aug 21, 2018 · national
Continuity (2)
Continuation 16532206 · Aug 5, 2019
Related Publication 20210219439A1 · Jul 15, 2021