Display device comprising a back plate having a side wall part that includes a plurality of bumps with a same height and arranged at intervals and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-11409148-B2
Application number	US-202117214378-A
Country	US
Kind code	B2
Filing date	Mar 26, 2021
Priority date	Jul 23, 2020
Publication date	Aug 9, 2022
Grant date	Aug 9, 2022

Abstract

Provided are a display device and a method for manufacturing the same, the display device includes: a back plate, a cover plate and a display panel, the cover plate is opposite to the back plate, the cover plate has a central area and a peripheral area, the display panel is fixed to the central area, the back plate includes a base plate and a side wall part, a surface of the side wall part facing the cover plate is a bonding surface; a portion of areas on the bonding surface are provided with a supporting structure, which includes multiple bumps with a same height and arranged at intervals, surfaces of the bumps facing the cover plate contact the peripheral area; a structural adhesive is provided between a portion of the bonding surface without the supporting structure and the cover plate to fix the cover plate to the bonding surface.

First claim

The invention claimed is:

1. A display device, comprising: a back plate, a cover plate and a display panel, the cover plate is opposite to the back plate, the cover plate has a central area and a peripheral area surrounding the central area, the display panel is fixed to a side of the cover plate facing the back plate and located in the central area, the back plate comprises a base plate and a side wall part formed by bending and extending an edge part of the base plate toward the cover plate, a surface of the side wall part facing the cover plate is a bonding surface;
a portion of areas on the bonding surface are provided with a supporting structure, the supporting structure is configured to support the cover plate, the supporting structure comprises a plurality of bumps with a same height and arranged at intervals, wherein surfaces of the bumps facing the cover plate contact the peripheral area of the cover plate; and
a structural adhesive is provided between a portion, which is not provided with the supporting structure, of the bonding surface and the cover plate, and the structural adhesive is configured to fix the cover plate to the bonding surface.

2. The display device of claim 1 , wherein the bumps are located in an area on a side of the bonding surface proximal to an inner wall of the side wall part, and side surfaces of the bumps proximal to the inner wall are flush with the inner wall.

3. The display device of claim 1 , wherein all of the bumps surround an area of the base plate on the bonding surface.

4. The display device of claim 2 , wherein a ratio of a distance between adjacent bumps to a length of each of the bumps ranges from 5 to 10.

5. The display device of claim 1 , wherein a ratio of a length of the bump to a height of the bump ranges from 12 to 40.

6. The display device of claim 1 , wherein a ratio of a width of the bonding surface to a width of the bump ranges from 2.5 to 4.

7. The display device of claim 1 , wherein each of the bumps has a length ranging from 6 mm to 8 mm, and a distance between adjacent bumps ranges from 45 mm to 60 mm.

8. The display device of claim 1 , wherein a width of each of the bumps ranges from 0.5 mm to 0.8 mm.

9. The display device of claim 1 , wherein a height of each of the bump ranges from 0.2 mm to 0.5 mm.

10. The display device of claim 1 , wherein the bumps, the side wall part, and the base plate are integrally formed into one piece.

11. A method for manufacturing the display device of claim 1 , comprising:
forming the back plate, the back plate includes the base plate and the side wall part formed by bending and extending the edge part of the base plate toward the cover plate, a surface of the side wall part facing the cover plate is a bonding surface, a portion of areas on the bonding surface are provided with a supporting structure, the supporting structure is configured to support the cover plate, the supporting structure comprises a plurality of bumps with a same height and arranged at intervals;
fixing the display panel to the central area on a side of the cover plate;
coating a structural adhesive on the bonding surface, wherein the height of the structural adhesive is greater than those of the bumps;
aligning a side of the cover plate fixed with the display panel to the bonding surface, and making surfaces of the bumps facing the cover plate contact the peripheral area of the cover plate; and
curing the structural adhesive so as to fix the cover plate to the bonding surface by the cured structural adhesive.

12. The method of claim 11 , wherein the bumps are located in an area on a side of the bonding surface proximal to the inner wall of the side wall part, and all of the bumps surround the area where the base plate is located on the bonding surface;
the coating the structural adhesive on the bonding surface comprises:
coating the structural adhesive on an area of the bonding surface on a side of the bumps away from the inner wall and surrounding the area where the base plate is located.

13. The method of claim 12 , wherein the structural adhesive does not contact the bumps during coating the structural adhesive on the area of the bonding surface on the side of the bumps away from the inner wall and surrounding the area where the base plate is located.

14. The method of claim 11 , wherein a ratio of a height to a width of the structural adhesive coated on the bonding surface ranges from 0.4 to 0.6.

15. The method of claim 11 , wherein a ratio of a width of the structural adhesive coated on the bonding surface to a width of the bonding surface ranges from 0.5 to 0.75.

Assignees

• Hefei Xinsheng Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Tao Ran
• Ling Fei
• Ma Yong

Classifications

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F1/133331

  Cover glasses · CPC title

• G02F1/13332

  Front frames · CPC title

• G02F1/133308 Primary

  Support structures for LCD panels, e.g. frames or bezels · CPC title

• G02F1/133317

  Intermediate frames, e.g. between backlight housing and front frame · CPC title