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Backlight module

A backlight module and light source technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of low light utilization rate and uneven brightness of the backlight module, and achieve the effect of improving light source utilization rate and uniform brightness

Inactive Publication Date: 2005-09-14
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of low light utilization rate and uneven brightness of the prior art backlight module, the present invention provides a backlight module with high light utilization rate and uniform brightness

Method used

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Examples

Experimental program
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Embodiment Construction

[0016] please refer to figure 2 and image 3 , figure 2 is a perspective exploded schematic diagram of the first embodiment of the backlight module of the present invention, image 3 Yes figure 2 A partial cross-sectional schematic diagram of the backlight module along the III-III direction. The backlight module 200 includes a light guide plate 20 , a point light source 21 and a semi-transmissive semi-reflection film 22 . The light guide plate 20 includes a light emitting surface 25 and a bottom surface 26 . The bottom surface 26 is disposed opposite the light emitting surface 25 and is recessed from the bottom surface 26 to the light guide plate 20 to form a light source storage portion 27 . The point light source 21 is disposed in the light source storage portion 27 of the light guide plate 20 , and the transflective film 22 is disposed between the light guide plate 20 and the point light source 21 .

[0017] The light guide plate 20 is a circular plate-shaped struct...

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PUM

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Abstract

The invention relates to an aphototropic module comprising a light conducting plate, point-source, a semi-permeable and semi-reflecting film, wherein, light conducting plate comprising an emitting light surface and a floor. The floor is set opposite to emitting light surface and forms light source storage section in conducting plate, besides, point-source is set in said light source storage section and a semi-permeable and semi-reflecting film is located between conducting plate and point-source.

Description

【Technical field】 [0001] The present invention relates to a backlight module for a liquid crystal display device. 【Background technique】 [0002] Because the liquid crystal display device has the advantages of light weight, low power consumption, and no radiation, it is widely used in electronic devices such as notebook computers, mobile phones, and electronic dictionaries. In recent years, with the continuous progress of liquid crystal display technology, liquid crystal display devices have been developed to be lighter, thinner and larger, and higher requirements for brightness and uniformity have been put forward with the development of large-scale liquid crystal display devices. [0003] Transmissive liquid crystal display devices generally require a backlight module to provide a light source for them. The light source in the prior art backlight module is usually arranged at the side or corner of the light guide plate, which has the following disadvantages: a light sourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02F1/13357
Inventor 蔡坤荣
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD