Backlight module including buffer structure and display device including the same

Patent metadata

Field	Value
Publication number	US-11579490-B2
Application number	US-202117478087-A
Country	US
Kind code	B2
Filing date	Sep 17, 2021
Priority date	Dec 2, 2020
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

The embodiments of the application provide a backlight module and a displaying device, relating to the technical field of display. The backlight module comprises a first support structure, an optical film material and a buffer structure; the first support structure is arranged on a side away from a light-outgoing side of the optical film material, and the first support structure and the optical film material have a through-hole; the buffer structure comprises a first buffer portion arranged in the through-hole, and a rigidity of the first buffer portion is less than a rigidity of the first support structure. The backlight module is internally provided with the buffer structure, and the first buffer portion in the buffer structure is arranged in the through-hole that penetrates through the first support structure and the optical film material.

First claim

The invention claimed is:

1. A backlight module, comprising a first support structure, an optical film material, and a buffer structure, wherein:
the first support structure is arranged on a side away from a light-outgoing side of the optical film material, and the first support structure and the optical film material have a through-hole; and
the buffer structure comprises a first buffer portion arranged in the through-hole, and a rigidity of the first buffer portion is less than a rigidity of the first support structure;
the buffer structure further comprises a second buffer portion, the second buffer portion is arranged on a side of the first support structure away from the optical film material;
wherein the first buffer portion is perpendicularly connected to the second buffer portion, and a rigidity of the second buffer portion is less than the rigidity of the first support structure;
the first buffer portion has a hollow area arranged along the direction perpendicular to the first support structure, and an orthographic projection of the hollow area on a plane where the first support structure is located is positioned within an orthographic projection of the through-hole on the plane where the first support structure is located; and
the backlight module further comprises a second support structure detachably embedded in the hollow area;
wherein the second support structure comprises a first support portion and a second support portion which are perpendicularly connected to each other, the first support portion is arranged in the hollow area, and the second support portion is arranged on a side of the second buffer portion away from the first support structure.

2. The backlight module according to claim 1 , wherein the sum of thicknesses of the first support structure and the optical film material is equal to a height of the first buffer portion in a direction perpendicular to the extension direction of the first support structure.

3. The backlight module according to claim 1 , wherein the first buffer portion is made of an elastic material.

4. The backlight module according to claim 1 , wherein the first support structure is made of a rigid material.

5. The backlight module according to claim 1 , wherein the hollow area is surrounded by a side of the first buffer portion away from the side wall of the through-hole, and the hollow area penetrates through the first buffer portion.

6. The backlight module according to claim 1 , wherein the material of the second buffer portion is the same as the material of the first buffer portion, and the first buffer portion and the second buffer portion are installed at one time.

7. The backlight module according to claim 1 , further comprising a first light shielding adhesive;
wherein the first light shielding adhesive covers a first surface of the first buffer portion and extends to a surface of the light-outgoing side of the optical film material, and the first surface of the first buffer portion is a surface of the first buffer portion toward the light-outgoing side of the optical film material.

8. The backlight module according to claim 1 , wherein a distance from a second surface of the first support portion to a third surface of the second support portion is greater than or equal to a distance from the first surface of the first buffer portion to the third surface of the second support portion;
the first surface of the first buffer portion is a surface of the first buffer portion toward the light-outgoing side of the optical film material, the second surface of the first support portion is a surface of the first support portion toward the light-outgoing side of the optical film material, and the third surface of the second support portion is a surface of the second support portion away from the light-outgoing side of the optical film material.

9. The backlight module according to claim 1 , wherein the optical film material comprises a reflector plate, a light guide plate, a diffusing plate and a brightness enhancement film in sequence along a direction perpendicular to the extension direction of the first support structure and away from the first support portion.

10. A displaying device, comprising a display panel, a cover plate, and the backlight module according to claim 1 ;
wherein the display panel is arranged on a light-outgoing side of the backlight module, and the cover plate is adhered through a bonding layer to a side of the display panel away from the backlight module.

11. The displaying device according to claim 10 , wherein the sum of thicknesses of the first support structure and the optical film material is equal to a height of the first buffer portion in a direction perpendicular to the extension direction of the first support structure.

12. The displaying device according to claim 10 , wherein the buffer structure further comprises a second buffer portion, the second buffer portion is arranged on a side of the first support structure away from the optical film material;
wherein the first buffer portion is perpendicularly connected to the second buffer portion, and a rigidity of the second buffer portion is less than the rigidity of the first support structure.

13. The displaying device according to claim 10 , wherein the backlight module further comprises a first light shielding adhesive;
wherein the first light shielding adhesive covers a first surface of the first buffer portion and extends to a surface of the light-outgoing side of the optical film material, and the first surface of the first buffer portion is a surface of the first buffer portion toward the light-outgoing side of the optical film material.

14. The displaying device according to claim 10 , further comprising a camera, wherein the camera is arranged in the hollow area of the first buffer portion.

15. The displaying device according to claim 10 , wherein the display panel comprises a color film substrate and an array substrate which are arranged in boxes opposite to each other, a first polarizer arranged on a side of the color film substrate away from the array substrate, and a second polarizer arranged on a side of the array substrate away from the color film substrate;
wherein orthographic projections of the first polarizer and the second polarizer on the plane where the first support structure is located are not superimposed with the orthographic projection of the through-hole on the plane where the first support structure is located.

16. The displaying device according to claim 15 , wherein a second light shielding adhesive is arranged on a side of the array substrate away from the color film substrate, the second light shielding adhesive is arranged on a side of the second polarizer close to the through-hole, and the second light shielding adhesive is bonded with the first light shielding adhesive in the backlight module.

Assignees

• Beijing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Cai Xiujun
• Wang Cuie
• Li Sa
• Lan Wenli
• Wang Dong
• Wang Dawei

Classifications

• G02B6/0053

  Prismatic sheet or layer; Brightness enhancement element, sheet or layer · CPC title

• G02B6/0088 Primary

  of the light guide or other optical sheets in the package · CPC title

• G02B6/0055

  Reflecting element, sheet or layer · CPC title

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title

• H04M1/0264

  for a camera module assembly · CPC title