LED Backlight Module and Liquid Crystal Display Device

• US 20130077014A1
• Filed: 10/12/2011
• Published: 03/28/2013
• Est. Priority Date: 09/28/2011
• Status: Abandoned Application

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Yang, Rulan
• Application Number:
  US13/319,434
• Publication Number:
  US 20130077014A1
• Time in Patent Office: Days
• US Class Current: 349/58
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• 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 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 2203/68 Green display, e.g. recycling, reduction of harmful substances

Abstract

The present invention discloses a LED backlight module and a LCD device; the LED backlight module comprises a lamp source fixing device for fixing the LED light bar and a backplane connected to the lamp source fixing device, wherein said lamp source fixing device is connected with said backplane from the outer layer of the LED backlight module. The present invention has the advantages that the LED removal process is greatly simplified; the LEDs in the structure are disassembled without moving the optical part; the phenomenon that the optical part is artificially damaged is avoided; and there is less possibility that movement affects and reduces the quality of display.

Claims

1. A light emitting diode (LED) backlight module, comprising:

a lamp source fixing device for fixing the LED light bar, and a backplane connected with the lamp source fixing device;

said lamp source fixing device is positioned on the outermost layer of said LED backlight module and is fixed on the outside of said backplane.

2. The LED backlight module of claim 1, wherein said backplane is provided one or more with convex prismatical threaded holes;

said lamp source fixing device is provided with one or more via holes matched with said convex prismatical threaded hole; and

said lamp source fixing device is fixedly connected with said backplane on one side of said lamp source fixing device by one or more screws via the threaded hole through the via hole.

3. The LED backlight module of claim 1, wherein said lamp source fixing device is made of aluminum extrusion.

4. A liquid crystal display (LCD) device, comprising:

a LCD panel, a backlight module and a front frame for fixing said LCD panel and said backlight module;

said backlight module comprises a lamp source fixing device for fixing the LED light bar, and a backplane connected with the lamp source fixing device;

said lamp source fixing device is positioned on the outermost layer of said LED backlight module and is fixed on the outside of said backplane.

5. The LCD device of claim 4, wherein said backplane is provided with one or more convex prismatical threaded holes;

said lamp source fixing device is provided with one or more via holes matched with said convex prismatical threaded hole; and

said lamp source fixing device is fixedly connected with said backplane on one side of said lamp source fixing device by one or more screws via the threaded hole through the via hole.

6. The LCD device of claim 5, wherein said lamp source fixing device is made of aluminum extrusion.

7. The LCD device of claim 4, wherein said front frame is fixedly connected with said lamp source fixing device.

8. The LCD device of claim 5, wherein said front frame is fixedly connected with said lamp source fixing device.

9. The LCD device of claim 6, wherein said front frame is fixedly connected with said lamp source fixing device.

10. The LCD device of claim 4, wherein said LCD device comprises a reflection sheet, a light guide plate (LGP), and an optical diaphragm which are sequentially arranged above said backplane;

wherein said LCD panel is positioned above the light emergent surface of the optical diaphragm;

one end of said lamp source fixing device for fixing the LED light bar is positioned on one side of said LGP, and the positioning plate is arranged between the upper part of the end and the LCD panel;

said positioning plate comprises a first end arranged between the side of the LCD panel and the front frame.

11. The LCD device of claim 5, wherein said LCD device comprises a reflection sheet, a light guide plate (LGP), and an optical diaphragm which are sequentially arranged above said backplane;

wherein said LCD panel is positioned above the light emergent surface of the optical diaphragm;

one end of said lamp source fixing device for fixing the LED light bar is positioned on one side of said LGP, and the positioning plate is arranged between the upper part of the end and the LCD panel;

said positioning plate comprises a first end arranged between the side of the LCD panel and the front frame.

12. The LCD device of claim 6, wherein said LCD device comprises a reflection sheet, a light guide plate (LGP), and an optical diaphragm which are sequentially arranged above said backplane;

wherein said LCD panel is positioned above the light emergent surface of the optical diaphragm;

one end of said lamp source fixing device for fixing the LED light bar is positioned on one side of said LGP, and the positioning plate is arranged between the upper part of the end and the LCD panel;

said positioning plate comprises a first end arranged between the side of the LCD panel and the front frame.

13. The LCD device of claim 10, wherein the surface of said positioning plate which is in contact with said LCD panel is provided with a buffer material.

14. The LCD device of claim 11, wherein the surface of said positioning plate which is in contact with said LCD panel is provided with a buffer material.

15. The LCD device of claim 12, wherein the surface of said positioning plate which is in contact with said LCD panel is provided with a buffer material.

16. The LCD device of claim 10, wherein said positioning plate also comprises a second end which is arranged between said LED light bar and said LGP, and one side of said second end is in contact with the light incident surface of said LGP.

17. The LCD device of claim 11, wherein said positioning plate also comprises a second end which is arranged between said LED light bar and said LGP, and one side of said second end is in contact with the light incident surface of said LGP.

18. The LCD device of claim 12, wherein said positioning plate also comprises a second end which is arranged between said LED light bar and said LGP, and one side of said second end is in contact with the light incident surface of said LGP.

19. The LCD device of claim 16, wherein said LED is in contact with the light incident surface of said LGP.

20. The LCD device of claim 17, wherein said LED is in contact with the light incident surface of said LGP.

21. The LCD device of claim 18, wherein said LED is in contact with the light incident surface of said LGP.

22. The LCD device of claim 10, wherein the surface of said second end which is in contact with said LGP is provided with a buffer material.

23. The LCD device of claim 11, the surface of said second end which is in contact with said LGP is provided with a buffer material.

24. The LCD device of claim 12, wherein the surface of said second end which is in contact with said LGP is provided with a buffer material.