Window and display device including same

Patent metadata

Field	Value
Publication number	US-12019471-B2
Application number	US-202217966280-A
Country	US
Kind code	B2
Filing date	Oct 14, 2022
Priority date	Jul 8, 2020
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

A window includes a first cover layer, a second cover layer, and a first adhesive part. The first cover layer includes a first non-folding area, a folding area, and a second non-folding area that are arranged in a first direction, and a plurality of first recessed portions recessed from a top surface of the folding area and extended in a second direction intersecting the first direction. The second cover layer is disposed on the first cover layer. The first adhesive part is disposed between the first cover layer and the second cover layer, and includes protrusions disposed in the plurality of first recessed portions of the first cover layer.

First claim

What is claimed is:

1. A window comprising:
a first cover layer comprising a first non-folding area and a second non-folding area spaced apart in a first direction, and a folding area disposed between the first non-folding area and the second non-folding area and in which a plurality of first recessed portions at least partially removed from an upper surface is defined;
a second cover layer disposed on the first cover layer; and
a first adhesive part disposed between the first cover layer and the second cover layer and comprising a plurality of protrusions disposed in the corresponding first recessed portions,
wherein each of the plurality of first recessed portions extends along a second direction intersecting the first direction and is spaced apart from each other along the first direction.

2. The window of claim 1 , wherein in a thickness direction of the first cover layer, a depth of the plurality of first recessed portions is the same as a thickness of the plurality of protrusions.

3. The window of claim 1 , wherein in a plan view, each of the plurality of protrusions is parallel to the adjacent first recessed portions along the second direction.

4. The window of claim 1 , wherein each of the plurality of first recessed portions is defined by:
a first inner surface of the first cover layer;
a second inner surface facing the first inner surface of the first cover layer; and
a bottom surface disposed between the first inner surface and the second inner surface of the first cover layer,
wherein the bottom surface is parallel to the top surface of the first cover layer.

5. The window of claim 1 , wherein a distance between adjacent the first recessed portions in the first direction is equal to each other.

6. The window of claim 1 , wherein the second cover layer has a smaller thickness than the first cover layer.

7. The window of claim 1 , wherein in a thickness direction of the first cover layer, a depths of the plurality of first recessed portions decrease gradually in the direction from the center of the folding area toward the first non-folding area and the second non-folding area.

8. The window of claim 1 , wherein in a thickness direction of the first cover layer, a depths of the plurality of first recessed portions increase gradually in the direction from the center of the folding area toward the first non-folding area and the second non-folding area.

9. The window of claim 1 , wherein the first cover layer is defined with a plurality of second recessed portions which is removed from a portion of a bottom surface of the first cover layer overlapping the folding region.

10. The window of claim 9 , wherein the plurality of first recessed portions and the plurality of second recessed portions are alternately arranged along the first direction.

11. The window of claim 10 , further comprising a plurality of second adhesive parts inserted into the corresponding second recessed portions, and
an one surface of each of the second adhesive parts exposed from the corresponding second recessed portions defines the same plane as the bottom surface of the first cover layer.

12. The window of claim 1 , wherein an one surface of each of the plurality of protrusions exposed from the corresponding first recessed portions defines a same plane as a bottom surface of the first cover layer.

13. The window of claim 12 , further comprising a second adhesive part disposed on the bottom surface of the first cover layer,
wherein in the folding area, the second adhesive part contacts the one surface of each of the plurality of protrusions.

14. The window of claim 13 , further comprising a third cover layer disposed below the second adhesive part,
wherein the third cover layer and the second cover layer comprise a same material.

15. The window device of claim 1 , wherein a width of each of the plurality of first recessed portions in the first direction decreases away from the first adhesive part.

16. The window device of claim 15 , wherein a shape of each of the plurality of first recessed portions has a “V” shape or a “U” shape in the second direction.

17. The window of claim 1 , wherein a thickness of the second cover layer is smaller than a thickness of the first cover layer.

18. The window of claim 1 , wherein the folding area is folded based on a folding axis extending in the second direction.

19. A window comprising:
a first cover layer comprising a first non-folding area and a second non-folding area spaced apart in a first direction, and a folding area disposed between the first non-folding area and the second non-folding area and in which a plurality of first recessed portions at least partially removed from an upper surface is defined;
a second cover layer disposed on the first cover layer; and
a first adhesive part disposed between the first cover layer and the second cover layer and comprising a plurality of protrusions disposed in the corresponding first recessed portions,
wherein each of the plurality of first recessed portions is spaced apart from each other in the first direction and in a second direction crossing the first direction.

20. The window of claim 19 , wherein in a thickness direction of the first cover layer, a depth of the plurality of first recessed portions is the same as a thickness of the plurality of protrusions.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Sanghoon
• Koo Minsang
• Kim Kyung-Man
• Kim Seungho
• Choi Min-Hoon
• Hwang Seongjin

Classifications

• G06F1/1656

  Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203) · CPC title

• B32B2457/20

  Displays, e.g. liquid crystal displays, plasma displays · CPC title

• G09F9/301 Primary

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

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B3/02

  characterised by features of form at particular places, e.g. in edge regions {(non-uniform thickness B32B3/263)} · CPC title