Backlight Module and LCD Device

• US 20130257705A1
• Filed: 03/30/2012
• Published: 10/03/2013
• Est. Priority Date: 03/27/2012
• 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: Yu, Yajun
• Application Number:
  US13/503,096
• Publication Number:
  US 20130257705A1
• Time in Patent Office: Days
• US Class Current: 345/102
• 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

Abstract

The invention provides a backlight module and an LCD device. The backlight module includes an LGP, point light source(s), and a backplane. The side wall of the backplane is provided with a pit extending to the outside of the backlight module relative to the light incident surface of the LGP, and the light sources are arranged on the pit. In the invention, because the position of the backlight module where the light sources are fixed is provided with the pit, the distance between the light source and the inner edge of the rubber frame is added due to pit, i.e. the A value is increased. Thus, the dark zones between every two LEDs of the light source can be effectively eliminated, and hotspot can be prevented from occurring in the active area of the LCD device. Meanwhile, after the A value is increased, corresponding A value can be selected to enable the frame of the LCD device to be narrowed, namely the A value is between the critical value that the hotspot cannot occur and the maximum A value obtained by the pit; thus, the frame of the LCD device becomes narrower, and the active area of the LCD device is increased.

Claims

1. A backlight module, comprising:

an outer frame, a rubber frame, an LGP, a row of point light sources, and a backplane;

wherein the side wall of said backplane is provided with a bending, the side wall of said rubber frame is provided with a through groove in the position corresponding to said bending, the bending of the side wall of said backplane is inserted in the through groove of the side wall of said rubber frame, and said light sources are arranged on said bending.

10. The backlight module of claim 1, wherein said point light sources are an LED lightbar.

2. A backlight module, comprising:

an LGP, a row point light sources, and a backplane;

wherein the side wall of said backplane is provided with a pit extending to the outside of said backlight module relative to the light incident surface of said LGP, and said light sources are arranged in said pit.

3. The backlight module of claim 2, wherein the pit of the side wall of said backplane is a through hole arranged in the side wall of said backplane.

4. The backlight module of claim 3, wherein said backlight module comprises a rubber frame;

the side wall of said rubber frame is also provided with a pit in the position corresponding to said through hole.

5. The backlight module of claim 4, wherein said backlight module comprises an outer frame;

the pit of said rubber frame is a through hole arranged in the side wall of said rubber frame, and said light sources are arranged on the smooth side wall of said outer frame.

6. The backlight module of claim 4, wherein said backlight module comprises an outer frame;

the pit of said rubber frame is a through hole arranged in the side wall of said rubber frame, the side wall of said outer frame is provided with a lug boss extending to the inside of said backlight module in the position corresponding to the through hole of the side wall of said rubber frame, the depth of said lug boss is less than the total thickness of the side wall of said backplane and the side wall of said rubber frame, and said light sources are arranged on said lug boss.

7. The backlight module of claim 2, wherein the pit of the side wall of said backplane is a bending on the side wall of said backplane, and the light sources are arranged on said bending.

8. The backlight module of claim 7, wherein said backlight module comprises a rubber frame;

the side wall of said rubber frame is also provided with a pit in the position corresponding to said bending.

9. The backlight module of claim 8, wherein the pit on the side wall of said rubber frame is a through groove arranged on the side wall of said rubber frame;

the bending on the side wall of said backplane is inserted in the through groove on the side wall of said rubber frame, said light sources are arranged on said bending, and said backplane is made of material with a good heat dissipation effect.

11. An LCD device, comprising:

a backlight module;

wherein said backlight module comprises an LGP, a row of point light sources, and a backplane;

the side wall of said backplane is provided with a pit extending to the outside of said backlight module relative to the light incident surface of said LGP, and said light sources are arranged in said pit.

12. The LCD device of claim 11, wherein the pit of the side wall of said backplane is a through hole arranged in the side wall of said backplane.

13. The LCD device of claim 12, wherein said backlight module comprises a rubber frame;

the side wall of said rubber frame is also provided with a pit in the position corresponding to said through hole.

14. The LCD device of claim 13, wherein said backlight module comprises an outer frame;

the pit on said rubber frame is a through hole arranged in the side wall of said rubber frame, and the light sources are arranged on the smooth side wall of said outer frame.

15. The LCD device of claim 13, wherein said backlight module comprises an outer frame;

the pit on said rubber frame is a through hole arranged in the side wall of said rubber frame, the side wall of said outer frame is provided with a lug boss extending to the inside of said backlight module in the position corresponding to the through hole of the side wall of said rubber frame, the depth of said lug boss is less than the total thickness of the side wall of said backplane and the side wall of said rubber frame, and said light sources are arranged on said lug boss.

16. The LCD device of claim 11, wherein the pit on the side wall of said backplane is a bending arranged on the side wall of said backplane, and the light sources are arranged on said bending.

17. The LCD device of claim 16, wherein said backlight module comprises a rubber frame;

the side wall of said rubber frame is also provided with a pit in the position corresponding to said through hole.

18. The LCD device of claim 17, wherein the pit on the side wall of said rubber frame is a through groove arranged on the side wall of said rubber frame;

the bending on the side wall of said backplane is inserted in the through groove of the side wall of said rubber frame, and said light sources are arranged on said bending.

19. The LCD device of claim 18, wherein said backplane is made of material with a good heat dissipation effect.

20. The LCD device of claim 11, wherein said point light sources are an LED lightbar.