Backlight module, liquid crystal display device and light source module

A technology of backlight module and light source module, which is applied in the direction of electric light source, lighting device, fixed lighting device, etc. It can solve the problems of narrow frame area, wide frame area of ​​backlight module, and inability to meet consumer needs, and achieve uniform light output Effect

Inactive Publication Date: 2014-01-15
XINCHENG TECH CHENGDU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the frame area of ​​the backlight module in the prior art cannot be used as the light output area is too wide, resulting in the problem that it cannot meet the needs of consumers, it is necessary to provide a backlight module with a narrow frame area

Method used

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  • Backlight module, liquid crystal display device and light source module
  • Backlight module, liquid crystal display device and light source module
  • Backlight module, liquid crystal display device and light source module

Examples

Experimental program
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Embodiment Construction

[0016] see figure 1 and figure 2 . The liquid crystal display device 2 includes a liquid crystal panel 22 and a backlight module 23 . The backlight module 23 is adjacent to the liquid crystal panel 22 and provides backlight for the liquid crystal panel 22 .

[0017] The backlight module 23 includes a plastic frame 25 , an optical film set 24 , a light guide element 26 , a light source 27 , a reflection structure 28 and a light diffusion element 29 .

[0018] The optical film set 24 includes structures such as prism sheets and diffusion sheets.

[0019] The light guiding element 26 cooperates with the light diffusing element 29 to transform the light emitted by the light source 27 into planar light to exit. The light guide element 26 includes a top surface 260 , a bottom surface 263 opposite to the top surface 260 , and a light incident surface 265 located on one side of the light guide element 26 and connected to the top surface 260 and the bottom surface 263 respectively...

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Abstract

The invention relates to a backlight module, a liquid crystal display device and a light source module. The backlight module comprises at least two point light sources and a light guiding element which receives light emitted by the at least two point light sources. The backlight module further comprises a light diffusing component which comprises a first light transmittance layer and a second light transmittance layer. The refractive index of the first light transmittance layer is larger than that of the second light transmittance layer. The refractive index of the second light transmittance layer is larger than the refractive index of the light guiding element. Light rays generated by the at least two point light sources enter the light diffusing component through the first light transmittance layer, then the light rays are refracted through the interface of the first light transmittance layer and the second light transmittance layer and then enter the second light transmittance layer, the second light transmittance layer emits the light rays out of the light diffusing component, and the light rays enter the light guiding element. A frame of the backlight module is narrow.

Description

technical field [0001] The invention relates to a backlight module, a liquid crystal display device and a light source module. Background technique [0002] Existing backlight modules generally include a light guide plate and a light source disposed on one side of the light guide plate. Most of the light sources use light-emitting diodes for the sake of energy saving and environmental protection. However, due to the strong directivity of the light emitted by the LEDs, it is easy to form multiple obvious "hot spots" on the light incident side of the light guide plate when the distance between two adjacent LEDs is relatively large. Therefore, when setting up the frame structure, it is necessary to reserve a frame for shielding the bright spot area and the light source area near the light-incident side of the light guide element. The wider frame occupies a relatively large area of ​​the entire backlight module, which cannot meet the needs of consumers for the narrow frame of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V5/08G02F1/13357
CPCG02B5/0236G02B5/0278G02B6/0016G02B6/0068G02B6/0073G02F1/133615G02B6/0011G02B5/02
Inventor 黄星童康文旗
Owner XINCHENG TECH CHENGDU
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