Cover window and display device including the same

Patent metadata

Field	Value
Publication number	US-10439164-B2
Application number	US-201816113971-A
Country	US
Kind code	B2
Filing date	Aug 27, 2018
Priority date	Aug 29, 2017
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A display device comprises a cover window including a first area of a curved shape and a second area of a flat shape and having a first end connected to the first area, wherein the first area has a plurality of first concave patterns at its inner surface; a display panel under the cover window; and an adhesive layer between the cover window and the display panel.

First claim

What is claimed is:

1. A cover window of a display device, comprising:
a first area of a curved shape; and
a second area of a flat shape and having a first end connected to the first area,
wherein the first area has a plurality of first concave patterns and a convex pattern between adjacent first concave patterns at an inner surface of the first area on which adhesive is applied for attaching to a display panel,
wherein the inner surface of the first area continuously extends along the adjacent first concave patterns and the convex pattern, and
wherein the second area has a plurality of second concave patterns and a convex pattern between adjacent second concave patterns at an inner surface of the second area on which adhesive is applied for attaching to the display panel.

2. The cover window of claim 1 , wherein at least one side of each of the first concave patterns is inclined at a first angle with respect to the inner surface of the first area facing the display panel.

3. The cover window of claim 1 , wherein a width of each first concave pattern is a same as or larger than a spacing between adjacent ones of the first concave patterns.

4. The cover window of claim 1 , wherein the inner surface of the first area includes a curved portion and a flat portion, and the plurality of first concave patterns at the curved portion are of a higher density than the plurality of first concave patterns at the flat portion.

5. The cover window of claim 1 , wherein at least one side of each of the second concave patterns has a second angle with respect to the inner surface of the second area, and the second angle is larger than the first angle.

6. The cover window of claim 1 , further comprising a third area connected to a second end of the second area, wherein the third area has a plurality of third concave patterns at an inner surface of the third area facing the display panel.

7. The cover window of claim 6 , wherein the first concave patterns and the third concave patterns are symmetrical with respect to the second area.

8. The cover window of claim 1 , wherein the cover window consists of a single body.

9. A display device, comprising:
a cover window including a first area of a curved shape and a second area of a flat shape and having a first end connected to the first area, wherein the first area has a plurality of first concave patterns and a convex pattern between adjacent first concave patterns at an inner surface of the first area, wherein the inner surface of the first area continuously extends along the adjacent first concave patterns and the convex pattern, and wherein the second area has a plurality of second concave patterns and a convex pattern between adjacent second concave patterns at an inner surface of the second area;
a display panel under the cover window, the inner surface of the first area facing the display panel; and
an adhesive layer between the cover window and the display panel.

10. The display device of claim 9 , wherein at least one side of each of the first concave patterns is inclined at a first angle with respect to the inner surface of the first area facing the display panel.

11. The display device of claim 9 , wherein a width of each first concave pattern is a same as or larger than a spacing between adjacent ones of the first concave patterns.

12. The display device of claim 9 , wherein the inner surface of the first area includes a curved portion and a flat portion, and the plurality of first concave patterns at the curved portion are of a higher density than the plurality of first concave patterns at the flat portion.

13. The display device of claim 9 , wherein the cover window further comprises a third area connected to a second end of the second area, and the third area has a plurality of third concave patterns at an inner surface of the third area facing the display panel.

14. A cover window, comprising:
an outer surface; and
an inner surface at an opposite side of the outer surface, at least part of the inner surface curved to match a shape of an outer surface of a display panel, each of a curved part and a flat part of the inner surface patterned with a plurality of concaved portions and a convexed portion between adjacent concaved portions, at least a subset of which has slanted side surfaces to interlock with adhesive placed on the inner surface for attaching the cover window to a display panel,
wherein the inner surface continuously extends along the adjacent concaved portions and the convexed portion.

15. The cover window of claim 14 , wherein a width of each of the concaved portions is same as or larger than spacing between an adjacent concaved portion.

16. The cover window of claim 15 , wherein the width of each of the concaved portions is 30 to 50 micrometers and a depth of each of the concaved portions is 30 to 50 micrometers.

17. The cover window of claim 14 , wherein side surfaces of two adjacent ones of the concaved portions define space having a cross section of a rectangular shape.

18. The cover window of claim 14 , wherein side surfaces of two adjacent ones of the concaved portions define space having a cross section of a triangular shape.

19. The cover window of claim 14 , wherein a curved portion of the inner surface having a higher density of the concaved portions relative to a flat portion of the inner surface.

20. The cover window of claim 14 , wherein the cover window consists of a single body.

21. A display device, comprising:
a display panel including circuit for displaying images;
a cover window comprising an inner surface at least part of the inner surface curved to match a shape of an outer surface of the display panel, each of a curved part and a flat part of the inner surface patterned with a plurality of concaved portions and a convexed portion between adjacent concaved portions, at least a subset of the inner surface having slanted side surfaces, wherein the inner surface continuously extends along the adjacent concaved portions and the convexed portion; and
adhesive between the cover window and the display panel, at least part of the adhesive interlocking with the slanted side surfaces to securely attach the cover window to the display panel.

Assignees

• Lg Display Co Ltd

Inventors

• Song Kelly Soo-Yeun
• Chin Mi-Hyung
• Hwang Jun-Ha
• Kim Jae-Yeong
• Jang Won-Bong

Classifications

• G02F1/136209

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/136213

  Storage capacitors associated with the pixel electrode · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F2201/121

  common or background · CPC title