Window and display device including same

Patent metadata

Field	Value
Publication number	US-2022011813-A1
Application number	US-202117200327-A
Country	US
Kind code	A1
Filing date	Mar 12, 2021
Priority date	Jul 8, 2020
Publication date	Jan 13, 2022
Grant date	—

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, 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;
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, wherein the first adhesive part comprises protrusions disposed in the plurality of first recessed portions of the first cover layer.

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

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

4 . The window of claim 3 , wherein the depths of the plurality of first recessed portions of the first cover layer decrease gradually in the direction from the center of the folding area toward the first non-folding area or the second non-folding area.

5 . The window of claim 3 , wherein the depths of the plurality of first recessed portions of the first cover layer increase gradually in the direction from the center of the folding area toward the first non-folding area or the second non-folding area.

6 . The window of claim 1 , wherein the first cover layer includes a plurality of second recessed portions recessed from a bottom surface of the folding area and extended in the second direction.

7 . The window of claim 6 , wherein the plurality of first recessed portions and the plurality of second recessed portions are alternately disposed in the first direction.

8 . The window of claim 6 , further comprising:
a plurality of second adhesive parts inserted into the second recessed portions of the first cover layer.

9 . The window of claim 1 , wherein the plurality of first recessed portions are not formed in the first and second non-folding areas.

10 . The window of claim 1 , further comprising:
a third cover layer disposed below the first cover layer, wherein the third cover layer and the second cover layer comprise a same material.

11 . The window of claim 1 , wherein the plurality of first recessed portions are spaced apart from each other in the first direction.

12 . 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 perpendicular to the first inner surface and the second inner surface of the first cover layer.

13 . The window of claim 1 , wherein a depth of each of the plurality of first recessed portions is less than a thickness of the first cover layer.

14 . The window of claim 1 , wherein the plurality of first recessed portions are spaced apart from each other in the first direction or in the second direction.

15 . The window device of claim 1 , wherein, each of the plurality of first recessed portions has a “V” shape or a “U” shape in the second direction.

16 . A window comprising:
a first cover layer comprising:
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 pattern holes passing through a top surface of the folding area and extended in a second direction intersecting the first direction;
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, wherein the first adhesive part comprises protrusions disposed in the plurality of pattern holes.

17 . The window of claim 16 , further comprising:
a second adhesive layer extended from the plurality of protrusions and disposed below the first cover layer.

18 . The window of claim 17 , further comprising:
a third cover layer disposed below the first cover layer, wherein the third cover layer and the second cover layer comprise a same material.

19 . The window of claim 16 , wherein the plurality of pattern holes are spaced apart from each other in the first direction.

20 . A display device comprising:
a display module comprising a folding area foldable with respect to a folding axis extending in one direction; and a window disposed on the display module, the window and the display module being folded together, wherein the window comprises:
a first cover layer comprising a plurality of recessed portions, each of the plurality of recessed portions being included in a top surface of the first cover layer overlapping the folding area, and each of the plurality of recessed portions extending in the one direction;
an adhesive part disposed on the first cover layer and comprising protrusions disposed in the plurality of recessed portions in a bottom surface of the adhesive part; and
a second cover layer disposed on the adhesive part.

Assignees

• Samsung Display Co Ltd

Inventors

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

Classifications

• G09F9/301 Primary

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

• B32B3/02

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

• B32B7/12

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

• B32B3/30 Primary

  characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} · CPC title

• B32B2457/20

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