BACKPLANE, BACKLIGHT MODULE, AND LIQUID CRYSTAL DISPLAY DEVICE

• US 20200132920A1
• Filed: 01/24/2018
• Published: 04/30/2020
• Est. Priority Date: 01/04/2018
• Status: Abandoned Application

• Current Assignee: Huizhou China Star Optoelectronics Technology Co., Ltd.
• Original Assignee: Huizhou China Star Optoelectronics Technology Co., Ltd.
• Inventors: LI, Jiaxin
• Application Number:
  US15/752,169
• Publication Number:
  US 20200132920A1
• Time in Patent Office: Days
• 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
• 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 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means
• CPC Class Codes: G02F 1/133628 with cooling means

Abstract

The disclosure provides a backplane, including a bracket including a bottom of the bracket and a sidewall of the bracket disposed at a side of the bottom, and the bottom has an opening, an end of the sidewall away from the bottom is configured to connect to a middle frame; a substrate, detachably sealing the opening, and the substrate facing a surface of the bracket is configured to mount a light emitting component, and a surface of the substrate away from the bracket is configured to mount a heat dissipating component. The disclosure also provides a backlight module including the backplane and a LCD device including the backlight module. The LCD can solve the heat dissipation problem and reduce the cost when the same type LCD panel adopts different backlight brightness or needs to be suitable for different temperature conditions by replacing the substrate without changing the other structures.

Claims

1. A backplane, comprising:

a bracket, comprising a bottom of the bracket and a sidewall of the bracket disposed at a side of the bottom of the bracket, wherein the bottom of the bracket has an opening, and an end of the sidewall of the bracket away from the bottom of the bracket is configured to connect to a middle frame; and

a substrate, detachably sealing the opening, wherein a surface of the substrate facing the bracket is configured to mount a light emitting component, and a surface of the substrate away from the bracket is configured to mount a heat dissipating component.

2. The backplane according to claim 1, wherein the sidewall of the bracket comprises a first portion formed by folding outwardly from a side of the bottom of the bracket, a second portion disposed at an end of the first portion away from the bottom of the bracket and parallel to the bottom of the bracket, and a third portion disposed at an end of the second portion away from the first portion and perpendicular to the second portion.

3. The backplane according to claim 2, wherein an outer surface of the third portion comprises a connecting portion configured to connect to the middle frame.

4. The backplane according to claim 3, wherein the connecting portion is a convex structure and/or a buckle.

5. The backplane according to claim 1, wherein the substrate detachably seals the opening by screwing and/or welding.

6. The backplane according to claim 1, wherein the substrate is made of aluminum or copper.

7. A backlight module, comprising:

the backplane according to claim 1;

a light emitting component disposed on a surface of the substrate facing the bracket; and

a light guide plate, an optical film, a middle frame, and a front frame sequentially arranged on the sidewall of the bracket;

wherein the middle frame includes a bottom of the middle frame and a sidewall of the middle frame disposed on a side of the bottom of the middle frame, and the sidewall of the middle frame is connected to the sidewall of the bracket.

8. The display module according to claim 7, wherein the backlight module further comprises a heat dissipating component disposed on a surface of the substrate away from the bracket.

9. The display module according to claim 7, wherein the middle frame is made of a plastic material.

10. The display module according to claim 7, wherein the sidewall of the bracket comprises a first portion formed by folding outwardly from a side of the bottom of the bracket, a second portion disposed at an end of the first portion away from the bottom of the bracket and parallel to the bottom of the bracket, and a third portion disposed at an end of the second portion away from the first portion and perpendicular to the second portion.

11. The display module according to claim 10, wherein an outer surface of the third portion comprises a connecting portion configured to connect to the middle frame.

12. The display module according to claim 11, wherein the connecting portion is a convex structure and/or a buckle.

13. The display module according to claim 7, wherein the substrate detachably seals the opening by screwing and/or welding.

14. The display module according to claim 7, wherein the substrate is made of aluminum or copper.

15. A liquid crystal display device, comprising:

a liquid crystal panel; and

a backlight module;

wherein the liquid crystal panel is disposed opposite to the backlight module, the backlight module provides a display light source to the liquid crystal panel so as to make the liquid crystal panel display an image;

wherein the backlight module is the backlight module according to claim 7.