Backlight module and display device

Patent metadata

Field	Value
Publication number	US-9784908-B2
Application number	US-201514796477-A
Country	US
Kind code	B2
Filing date	Jul 10, 2015
Priority date	Sep 26, 2014
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

The present disclosure provides a backlight module and a display device. The backlight module includes a back plate, a light-guiding plate arranged on the back plate, and an elastic member arranged between a lateral edge of the back plate and a corresponding lateral edge of the light-guiding plate. The elastic member includes a body connected to the back plate, and a positioning member connected to the body and positioning the light-guiding plate.

First claim

What is claimed is:

1. A backlight module, comprising a back plate, a light-guiding plate arranged on the back plate, and an elastic member arranged between a lateral edge of the back plate and a corresponding lateral edge of the light-guiding plate;
wherein the elastic member comprises a body connected to the back plate, and a positioning member connected to the body and positioning the light-guiding plate,
the body comprises a first connector and a second connector connected to the two adjacent lateral edges forming the corner of the back plate, respectively; the positioning member comprises a first clamping member connected to the first connector and a second clamping member connected to the second connector; the first clamping member and the second clamping member apply forces to the two lateral edges of the light-guiding plate corresponding to the two adjacent lateral edges forming the corner of the back plate, respectively, so as to clamp the light-guiding plate,
the first clamping member is a first columnar protrusion protruding from the first connector; the second clamping member is a second columnar protrusion protruding from the second connector; ends of the first columnar protrusion and the second columnar protrusion apply forces to the two lateral edges of the light-guiding plate corresponding to the two adjacent lateral edges forming the corner of the back plate, respectively, so as to clamp the light-guiding plate.

2. The backlight module according to claim 1 , wherein there are at least two elastic members arranged at a corner of the back plate; the elastic members clamp two lateral edges of the light-guiding plate which are corresponding to two adjacent lateral edges forming the corner of the back plate to position the light-guiding plate.

3. The backlight module according to claim 1 , wherein there are a plurality of first columnar protrusions and a plurality of second columnar protrusions.

4. The backlight module according to claim 1 , wherein the first clamping member is a first annular protrusion protruding from the first connector; the second clamping member is a second annular protrusion protruding from the second connector; an outer surface of the first annular protrusion and an outer surface of the second annular protrusion apply forces to the two lateral edges of the light-guiding plate corresponding to the two adjacent lateral edges forming the corner of the back plate, respectively, so as to clamp the light-guiding plate.

5. The backlight module according to claim 4 , wherein there are a plurality of first annular protrusions and a plurality of second annular protrusions.

6. The backlight module according to claim 1 , wherein there is a plurality of elastic members; at least one of the elastic members is arranged at a first edge of the back plate; at least one of the elastic members is arranged at a second edge of the back plate adjacent to the first edge; the elastic members cooperate with each other and apply forces to two edges of the light-guiding plate corresponding to the first edge and the second edge, respectively, so as to position the light-guiding plate.

7. The backlight module according to claim 1 , wherein there is one elastic member; the body is an annular structure of a shape matching with a shape of the back plate; at least two positioning members are arranged on the body;
the at least two positioning members are arranged at a corner of the back plate, or
one of the at least two positioning members is arranged at a first edge of the back plate, and the other one of the at least two positioning members is arranged at a second edge of the back plate adjacent to or opposite to the first edge.

8. A display device, comprising the backlight module according to claim 1 .

9. A backlight module, comprising a back plate, a light-guiding plate arranged on the back plate, and an elastic member arranged between the back plate and the light-guiding plate;
wherein the elastic member comprises a body in contact with the back plate, and a positioning member protruding from the body and contacting the light-guiding plate
the body is of an L shape and comprises a first connector and a second connector connected to the first connector; the first connector and the second connector are in contact with lateral edges of the back plate, respectively;
the positioning member comprises a first clamping member connected to the first connector and a second clamping member connected to the second connector; the first clamping member and the second clamping member are in contact with two lateral edges of the light-guiding plate, respectively,
the first clamping member is a protrusion protruding from the first connector, and the second clamping member is a protrusion protruding from the second connector.

10. The backlight module according to claim 9 , wherein the body is in contact with a lateral edge of the back plate; the positioning member is in contact with a lateral edge of the light-guiding plate corresponding to the lateral edge of the back plate.

11. The backlight module according to claim 9 , wherein the first clamping member and the second clamping member are both hollow protrusions.

12. The backlight module according to claim 9 , wherein the body is connected to the back plate by clamping or riveting.

13. The backlight module according to claim 9 , wherein the elastic member is formed integrally with the back plate by injection molding.

14. A display device, comprising the backlight module according to claim 9 .

Assignees

• Boe Technology Group Co Ltd
• Boe Optical Science & Technology Co Ltd

Inventors

• Wu Chunming

Classifications

• G02B6/0088 Primary

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

• G02B6/0065

  Manufacturing aspects; Material aspects · CPC title