Display screen and display device

Patent metadata

Field	Value
Publication number	US-12016144-B2
Application number	US-202117442042-A
Country	US
Kind code	B2
Filing date	Aug 4, 2021
Priority date	Jul 19, 2021
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

A display screen and a display device are provided. The display has a bending area. The display screen has a display layer and a cover plate layer. The cover plate layer is located on the display layer. The cover plate layer has a composite portion located in the bending area. A plurality of holes are formed in the composite portion. The holes are filled with a material, and an elastic modulus of the material is smaller than an elastic modulus of the composite portion.

First claim

The invention claimed is:

1. A display screen, comprising a bending area, wherein the display screen comprises:
a display layer; and
a cover plate layer, wherein the cover plate layer is located on the display layer, and the cover plate layer includes a composite portion located in the bending area, wherein a plurality of holes are defined in the composite portion, and the holes are filled with a material, and an elastic modulus of the material is smaller than an elastic modulus of the composite portion,
wherein the display layer comprises an array substrate layer, the array substrate layer comprises a plurality of film layers, and a portion of at least one of the film layers in the array substrate layer is provided with a plurality of first openings; the composite portion comprises a main composite portion and a first auxiliary composite portion and a second auxiliary composite portion located on both sides of the main composite portion, wherein a volume ratio of the plurality of holes in the main composite portion is greater than a volume ratio of the plurality of holes in any one of the first sub-composite portion and the second sub-composite portion;
wherein a distance, which is in a second direction perpendicular to a first direction, between two adjacent holes in the first sub-composite portion, a distance in the second direction between two adjacent holes in the main composite portion, a distance in the second direction between two adjacent holes in the second sub-composite portion are gradually changed along the second direction, the first direction is a direction in which the main composite portion points to the second auxiliary composite portion.

2. The display screen according to claim 1 , wherein a volume of the holes in the main composite portion is greater than a volume of the holes in any one of the first sub-composite portion and the second sub-composite portion.

3. The display screen according to claim 1 , wherein a distance between two adjacent holes in the main composite portion is less than a distance between two adjacent holes in any one of the first sub-composite portion and the second sub-composite portion.

4. The display screen according to claim 1 , wherein the plurality of holes are arranged into a plurality of hole groups, and each of the hole groups includes the plurality of holes,
wherein the plurality of hole groups are arranged along the first direction, the plurality of holes in every two adjacent hole groups are arranged staggered along the second direction.

5. The display screen according to claim 4 , wherein the plurality of holes in every two adjacent hole groups in the main composite portion have overlapping portions in the second direction.

6. A display screen, comprising a bending area, wherein the display screen comprises:
a display layer; and
a cover plate layer, wherein the cover plate layer is located on the display layer, and the cover plate layer includes a composite portion located in the bending area, wherein a plurality of holes are defined in the composite portion, and the holes are filled with a material, and an elastic modulus of the material is smaller than an elastic modulus of the composite portion; the composite portion comprises a main composite portion and a first auxiliary composite portion and a second auxiliary composite portion located on both sides of the main composite portion, wherein a volume ratio of the plurality of holes in the main composite portion is greater than a volume ratio of the plurality of holes in any one of the first sub-composite portion and the second sub-composite portion;
wherein a distance, which is in a second direction perpendicular to a first direction, between two adjacent holes in the first sub-composite portion, a distance in the second direction between two adjacent holes in the main composite portion, a distance in the second direction between two adjacent holes in the second sub-composite portion are gradually changed along the second direction, the first direction is a direction in which the main composite portion points to the second auxiliary composite portion.

7. The display screen according to claim 6 , wherein a volume of the holes in the main composite portion is greater than a volume of the holes in any one of the first sub-composite portion and the second sub-composite portion.

8. The display screen according to claim 6 , wherein a distance between two adjacent holes in the main composite portion is less than a distance between two adjacent holes in any one of the first sub-composite portion and the second sub-composite portion.

9. The display screen according to claim 6 , wherein the plurality of holes are arranged into a plurality of hole groups, and each of the hole groups includes the plurality of holes,
wherein the plurality of hole groups are arranged along the first direction, the plurality of holes in every two adjacent hole groups are arranged staggered along the second direction.

10. The display screen according to claim 9 , wherein the plurality of holes in every two adjacent hole groups in the main composite portion have overlapping portions in the second direction.

11. The display screen according to claim 10 , wherein the plurality of holes in the two adjacent hole groups in the first sub-composite portion and the second sub-composite portion have overlapping portions in the second direction, wherein, in the second direction, a size of the overlapping portions of the first sub-composite portion and the second sub-composite portion is smaller than a size of the overlapping portions in the main composite portion.

12. The display screen according to claim 9 , wherein, in the first direction, a plurality of first gaps are defined between two adjacent holes in the first sub-composite portion, and the plurality of the first gaps show a decreasing trend in the first direction.

13. The display screen according to claim 9 , wherein, in the first direction, a plurality of second gaps are defined between two adjacent holes in the second sub-composite portion, and a plurality of the second gaps show an increasing trend in the first direction.

14. The display screen according to claim 6 , wherein a projection of the holes on the display layer is an axisymmetric figure, and two opposite ends in the projection are both semi-elliptical, wherein extension lines of major axes of two semi-ellipses are both perpendicular to a symmetry axis of the projection.

15. The display screen according to claim 6 , wherein at least one of the holes extends from a side of the composite portion close to the display layer to a side away from the display layer, and the holes do not penetrate the composite portion.

16. The display screen according to claim 6 , wherein material filled in the holes comprises resin or curing adhesive.

17. A display device, comprising a display screen, wherein the display screen comprises:
a display layer;
a cover plate layer, wherein the cover plate layer is located on the display layer, and the cover plate layer includes a composite portion located in a bending area, wherein a plurality of holes are defined in the composite portion, and the holes are filled with a material, and an elastic modulus of the material is smaller than an elastic modulus of the composite portion, the composite portion comprises a main composite portion and a first auxiliary composite portion and a second auxiliary composite portion located on both sides of the main composite portion, wherein a volume ratio of the plurality of holes in the main composite portion is greater than a volume ratio of t

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Han Wen
• Feng Zikang

Classifications

• H05K5/0217

  Mechanical details of casings (covers, lids, hoods or members for covering apertures H05K5/03) · CPC title

• G06F1/1624

  with sliding enclosures, e.g. sliding keyboard or display · CPC title

• G06F1/1652 Primary

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

• H04M1/185

  Improving the shock resistance of the housing, e.g. by increasing the rigidity · CPC title

• H04M1/0237

  Sliding mechanism with one degree of freedom · CPC title