Backlight module and display device

• US 10,018,775 B2
• Filed: 07/25/2014
• Issued: 07/10/2018
• Est. Priority Date: 12/27/2013
• Status: Active Grant

• Current Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Wang, Juan, Song, Guannan, Bu, Zhanchang, Kim, Woong
• Primary Examiner(s): Guharay, Karabi
• Assistant Examiner(s): PEERCE, MATTHEW J
• Application Number:
  US14/428,897
• Publication Number:
  US 20160011357A1
• Time in Patent Office: 1,446 Days
• Field of Search: 362606, 349 61
• CPC Class Codes: G02B 6/005 provided by one optical element, or plurality thereof, placed on the light output side of the light guide
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02B 6/0073 Light emitting diode [LED]
• CPC Class Codes: G02B 6/0085 Means for removing heat created by the light source from the package heat extraction or cooling elements for semiconductor light sources in general H01L33/64
• CPC Class Codes: G02B 6/009 of the light source in the package G02B6/0021 takes precedence

Abstract

The present disclosure provides a backlight module and a display device. The backlight module includes a back plate, a light bar arranged on the back plate, and a clamping structure. The clamping structure includes clamping members arranged on the light bar, and positioning connectors arranged on the back plate at positions corresponding to the clamping members. The clamping members cooperate with the positioning connectors to secure the light bar onto the back plate.

Claims

1. A backlight module, comprising a back plate and a light bar arranged on the back plate;

wherein the backlight module further comprises a clamping structure;

the clamping structure comprises clamping members arranged on the light bar, and positioning connectors arranged on the back plate at positions corresponding to the clamping members;

the clamping members are capable of cooperating with the positioning connectors to secure the light bar onto the back plate,

wherein the clamping members are arranged at a side of the light bar adjacent to the back plate;

the positioning connectors comprise via-holes arranged in the back plate at positions corresponding to the clamping members,

the clamping members are capable of being switched between a first state and a second state;

in the first state, the clamping members are substantially perpendicular to the light bar, and the light bar is not secured onto the back plate; and

in the second state, each of the clamping members is bent flexibly and reversely to form a first portion and a second portion, wherein the first portion of the clamping member extends through a respective one of the via-holes in a first direction, the second portion of the clamping member extends in a second direction to be attached to the back plate to secure the light bar onto the back plate, the first portion and the second portion of the clamping member are connected to each other, and the first direction and the second direction are opposite to each other;

wherein the light bar comprises an aluminum substrate and a light source arranged at one side of the aluminum substrate;

the clamping members are arranged at an other side of the aluminum substrate that is opposite to the one side of the aluminum substrate, wherein the clamping members are formed integrally with the aluminum substrate.

2. The backlight module according to claim 1, wherein the clamping members are connected to the aluminum substrate by an adhesive or by welding.

3. The backlight module according to claim 1, wherein the aluminum substrate is in direct contact with the back plate.

4. The backlight module according to claim 1, further comprises a light-guide plate secured onto the back plate and an optical membrane arranged at a front of the light-guide plate, the back plate comprises a first portion arranged on a back of the light-guide plate and a second portion surrounding side faces of the light-guide plate, and the positioning connectors are arranged on the second portion.

5. The backlight module according to claim 4, wherein the light bar comprises an aluminum substrate and a light source arranged at one side of the aluminum substrate;

the clamping members are arranged at an other side of the aluminum substrate that is opposite to the one side of the aluminum substrate;

the other side of the aluminum substrate is in direct contact with the second portion of the back plate.

6. A display device, comprising a display panel, a backlight module, and a bezel for assembling the display panel and the backlight module;

wherein the backlight module comprises a back plate and a light bar arranged on the back plate;

the backlight module further comprises a clamping structure;

the clamping structure comprises clamping members arranged on the light bar, and positioning connectors arranged on the back plate at positions corresponding to the clamping members;

the clamping members are capable of cooperating with the positioning connectors to secure the light bar onto the back plate,

wherein the clamping members are arranged at a side of the light bar adjacent to the back plate;

the positioning connectors comprise via-holes arranged in the back plate at positions corresponding to the clamping members,

the clamping members are capable of being switched between a first state and a second state;

in the first state, the clamping members are substantially perpendicular to the light bar, and the light bar is not secured onto the back plate; and

in the second state, each of the clamping members is bent flexibly and reversely to form a first portion and a second portion, wherein the first portion of the clamping member extends through a respective one of the via-holes in a first direction, the second portion of the clamping member extends in a second direction to be attached to the back plate to secure the light bar onto the back plate, the first portion and the second portion of the clamping member are connected to each other, and the first direction and the second direction are opposite to each other;

Wherein the light bar comprises an aluminum substrate and a light source arranged at one side of the aluminum substrate;

the clamping members are arranged at an other side of the aluminum substrate that is opposite to the one side of the aluminum substrate, wherein the clamping members are formed integrally with the aluminum substrate.

7. The display device according to claim 6, wherein the clamping members are connected to the aluminum substrate by an adhesive or by welding.

8. The display device according to claim 6, wherein the aluminum substrate is in direct contact with the back plate.

9. The display device according to claim 6, the backlight module further comprises a light-guide plate secured onto the back plate and an optical membrane arranged at a front of the light-guide plate, the back plate comprises a first portion arranged on a back of the light-guide plate and a second portion surrounding side faces of the light-guide plate, and the positioning connectors are arranged on the second portion.

10. The display device according to claim 9, wherein the light bar comprises an aluminum substrate and a light source arranged at one side of the aluminum substrate;

the clamping members are arranged at an other side of the aluminum substrate that is opposite to the one side of the aluminum substrate;

the other side of the aluminum substrate is in direct contact with the second portion of the back plate.