Backlight module and display module

Patent metadata

Field	Value
Publication number	US-12248216-B2
Application number	US-202218022118-A
Country	US
Kind code	B2
Filing date	Apr 26, 2022
Priority date	Apr 26, 2022
Publication date	Mar 11, 2025
Grant date	Mar 11, 2025

Abstract

The backlight module includes: a backplane and an adhesive frame. The backplane includes a bottom plate and a plurality of side plates, matching to define an accommodating space. The side plates include at least one first side plate. The first side plate has at least two clamping grooves distributed in an extending direction of the first side plate. The adhesive frame includes subframes connected with the side plates. A first subframe in the subframes is connected with the first side plate. The first subframe includes a bearing part and at least two clamping parts in correspondence with the clamping grooves. The bearing part is on a side of the accommodating space away from the bottom plate. The clamping parts are on a side of the bearing part facing the bottom plate. Each clamping part is clamped with the corresponding clamping groove in a matching mode.

First claim

What is claimed is:

1. A backlight module, comprising:
a backplane, comprising:
a bottom plate, and
a plurality of side plates connected with an edge of the bottom plate,
wherein the plurality of side plates and the bottom plate match to define an accommodating space, the plurality of side plates comprise at least one first side plate, and the first side plate is provided with at least two clamping grooves distributed in an extending direction of the first side plate; and

an adhesive frame, comprising:
a plurality of subframes connected with the plurality of side plates in a one-to-one correspondence mode,
wherein a first subframe in the plurality of subframes is connected with the first side plate, the first subframe comprises:
a bearing part, and
at least two clamping parts in one-to-one correspondence with the clamping grooves,
wherein the bearing part is located on a side of the accommodating space away from the bottom plate, the at least two clamping parts are located on a side of the bearing part facing the bottom plate, and the clamping parts each is clamped with a corresponding one of the clamping grooves in a matching mode and is completely embedded into the corresponding one of the clamping grooves;
a thickness of the first side plate in a first direction is greater than a thickness of the clamping part connected with the first side plate in the first direction, wherein the first direction is perpendicular to an extending plane of the first side plate.

2. The backlight module according to claim 1 , wherein the bearing part comprises:
a film pressing plate located on a side, adjacent to the accommodating space, of the first side plate connected with the bearing part,
wherein the film pressing plate and the bottom plate are oppositely arranged, and the film pressing plate, the plurality of side plates and the bottom plate match to define the accommodating space;
each clamping part is connected with an edge of the film pressing plate adjacent to the first side plate; and
the clamping grooves corresponding to the clamping parts are formed in an inner wall of the first side plate, and the first side plate is provided with a fence part located on a side of the film pressing plate away from the bottom plate.

3. The backlight module according to claim 2 , wherein at least one positioning groove is further formed in the inner wall of the first side plate; and
the first subframe further comprises:
at least one positioning part in one-to-one correspondence with first positioning grooves,
wherein the at least one of the positioning parts is located on a side of the film pressing plate facing the bottom plate and connected with an edge of the film pressing plate connected with the clamping parts, each positioning part and the corresponding positioning groove are positioned in a matching mode, and the positioning part is completely embedded into the corresponding positioning groove.

4. The backlight module according to claim 3 , wherein the clamping parts and the positioning parts are arranged at the edge of the film pressing plate in a staggered mode.

5. The backlight module according to claim 1 , wherein the bearing part comprises:
a film pressing plate, and
a side frame part,
wherein the film pressing plate is located on a side, adjacent to the accommodating space, of the first side plate connected with the bearing part, the film pressing plate and the bottom plate are oppositely arranged, the side frame part is located on a side of the first side plate away from the bottom plate and connected with an edge of the film pressing plate adjacent to the first side plate, and an outer wall of the side frame part is flush with an outer wall of the first side plate; and
each clamping part is connected with an edge of the film pressing plate connected with the side frame part.

6. The backlight module according to claim 5 , wherein at least one plug-in groove is formed in a side of the bearing part facing the first side plate, at least one plug-in part in one-to-one correspondence with the at least one plug-in groove is arranged on a side of the first side plate adjacent to the bearing part, and each plug-in part is in inserting connection with the corresponding plug-in groove in a matching mode.

7. The backlight module according to claim 6 , wherein the clamping parts and the plug-in grooves are arranged on the bearing part in a staggered mode.

8. The backlight module according to claim 5 , wherein the clamping grooves are formed in an inner wall of the first side plate.

9. The backlight module according to claim 5 , wherein the clamping grooves penetrate through the first side plate in the first direction.

10. The backlight module according to claim 9 , wherein first light shield adhesive tape is attached to the outer wall of the first side plate and the outer wall of the side frame part.

11. The backlight module according to claim 1 , wherein the clamping groove comprises:
a first groove region and a second groove region distributed in a second direction,
wherein the second direction is a direction that the bearing part points to the bottom plate, a center line of the first groove region coincides with a center line of the second groove region, a width of the first groove region in a third direction is smaller than a width of the second groove region in the third direction, and the third direction is an extending direction of the first side plate where the clamping groove is located; and
the clamping part comprises:
a connection part, and
a clamping hook part connected with the connection part,
wherein one end of the connection part is connected with a side of the bearing part facing the bottom plate, the clamping hook part is located at an end of the connection part away from the bearing part, the connection part is located in the first groove region, and the clamping hook part is clamped with an inner wall of the second groove region in the second groove region in a matching mode.

12. The backlight module according to claim 1 , further comprising:
a backlight assembly,
wherein the backlight assembly is located in the accommodating space, and a preset gap exists between the backlight assembly and the first side plate.

13. The backlight module according to claim 1 , wherein the backlight module is divided into an effective light-emitting region and a surrounding region located around the effective light-emitting region, the plurality of side plates and the adhesive frame are located in the surrounding region, and a distance between the effective light-emitting region and an outer edge of a region where the first side plate is located is smaller than 5 mm.

14. A display module, comprising:
the backlight module according to claim 1 , and
a liquid crystal display panel located on a side of the bearing part of the backlight module away from the bottom plate.

15. The display module according to claim 14 , wherein the display module is divided into a display region corresponding to the effective light-emitting region of the backlight module and a bezel region corresponding to the surrounding region of the backlight module, wherein the bezel region is wrapped with second light shield adhesive tape.

16. A backlight module, comprising:
a backplane, comprising:
a bottom plate, and
a plurality of side plates connected with an edge of the bottom plate,
wherein the plurality of side plates and the bottom plate match to define an accommodating space, the plurality of side plates comprise at least one first side plate, and the first side plate is provided with at least

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Wang Guohui
• Li Tianma
• Li Liang

Classifications

• G02F1/133314

  Back frames · CPC title

• G02F1/133317

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

• G02F1/133308

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

• G02F1/1336

  Illuminating devices · CPC title

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title