Elastic fixing member for fixing light guide plate, corresponding backplane and liquid crystal display device comprising both

• US 10,642,081 B2
• Filed: 09/28/2017
• Issued: 05/05/2020
• Est. Priority Date: 03/22/2017
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Song, Suimang, Li, Liang
• Primary Examiner(s): Nguyen, Sang V
• Application Number:
  US15/755,998
• Publication Number:
  US 20180341144A1
• Time in Patent Office: 950 Days
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133524 Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 2201/46 Fixing elements
• CPC Class Codes: G02F 2201/465 Snap -fit

Abstract

The present disclosure relates to the technical field of fixation of light guide plates, and in particular discloses an elastic fixing member for fixing a light guide plate, a backplane for use in conjunction therewith, and a liquid crystal display device comprising both. The elastic fixing member comprises: a body part and a self-fixation part, wherein the self-fixation part is configured to fix the elastic fixing member on a backplane in use. Correspondingly, the backplane comprises: a base and a side wall. Furthermore, a fixing structure and a mounting guide structure are arranged on the side wall of the backplane. The fixing structure is configured to maintain the fixation of the elastic fixing member on the backplane together with the self-fixation part of the elastic fixing member in use, and the mounting guide structure is configured to guide the elastic fixing member in use to fix it on the backplane.

Claims

1. A backlight module, comprising:

a light guide plate;

an elastic fixing member for fixing the light guide plate; and

a backplane for use in conjunction with the elastic fixing member,

wherein the elastic fixing member comprises a body part and a self-fixation part which are molded integrally, the body part is in a straight shape and arranged along a side edge of the light guide plate in use, the self-fixation part is configured to fix the elastic fixing member on the backplane in use, the self-fixation part comprises a rod and a cap, the cap is arranged at one end of the rod, and at the other end of the rod opposite to the cap, the rod is connected to the body part of the elastic fixing member,

wherein the backplane comprises a base and a side wall, a fixing structure and a mounting guide structure are arranged on the side wall of the backplane, the fixing structure is configured to maintain a fixation of the elastic fixing member on the backplane together with the self-fixation part of the elastic fixing member in use, the mounting guide structure is configured to guide the elastic fixing member in use to fix it on the backplane, and

wherein the light guide plate is provided with a groove configured to house the body part of the elastic fixing member therein.

2. The backlight module according to claim 1, wherein

the elastic fixing member is formed from a rubber material by an injection molding process.

3. The backlight module according to claim 1, wherein

the fixing structure comprises a first hole structure penetrating through the side wall of the backplane, and

the mounting guide structure comprises a second hole structure penetrating through the side wall of the backplane,

wherein the second hole structure is in communication with the first hole structure, and is open at a top of the side wall of the backplane.

4. The backlight module according to claim 3, wherein

an aperture of the second hole structure is greater than that of the first hole structure.

5. A liquid crystal display device comprising the backlight module according to claim 1, wherein the backlight module is configured to provide backlight for the liquid crystal display device.

6. The liquid crystal display device according to claim 5, wherein

the elastic fixing member is formed from a rubber material by an injection molding process.

7. The liquid crystal display device according to claim 5, wherein

the fixing structure of the backplane comprises a first hole structure penetrating through the side wall of the backplane, and

the mounting guide structure comprises a second hole structure penetrating through the side wall of the backplane,

wherein the second hole structure is in communication with the first hole structure, and is open at the top of the side wall of the backplane.

8. The liquid crystal display device according to claim 7, wherein

an aperture of the second hole structure is greater than that of the first hole structure.

9. A backlight module, comprising:

a light guide plate;

an elastic fixing member for fixing the light guide plate; and

a backplane for use in conjunction with the elastic fixing member,

wherein the elastic fixing member comprises a body part and a self-fixation part which are molded integrally, the body part is in a curved shape and arranged close to corners of the light guide plate in use, the self-fixation part is configured to fix the elastic fixing member on the backplane in use, the self-fixation part comprises a rod and a cap, the cap is arranged at one end of the rod, and at the other end of the rod opposite to the cap, the rod is connected to the body part of the elastic fixing member,

wherein the backplane comprises a base and a side wall, a fixing structure and a mounting guide structure are arranged on the side wall of the backplane, the fixing structure is configured to maintain a fixation of the elastic fixing member on the backplane together with the self-fixation part of the elastic fixing member in use, the mounting guide structure is configured to guide the elastic fixing member in use to fix it on the backplane, and

wherein the light guide plate is provided with a groove configured to house the body part of the elastic fixing member therein.