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Back light module and liquid crystal display module

A technology of backlight module and light source, applied in optics, nonlinear optics, instruments, etc., can solve the problems of high cost of display module and high cost of liquid crystal display module, and achieve the effect of low cost and cost reduction

Inactive Publication Date: 2007-06-27
INNOCOM TECH SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem of high cost of liquid crystal display modules with switchable viewing angle ranges in the prior art, it is necessary to provide a backlight module with switchable light output viewing angle ranges
[0009] In addition, in order to solve the problem of high cost of liquid crystal display modules with switchable viewing angle ranges in the prior art, it is also necessary to provide a liquid crystal display module with low cost and switchable viewing angle ranges.

Method used

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  • Back light module and liquid crystal display module
  • Back light module and liquid crystal display module
  • Back light module and liquid crystal display module

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Embodiment Construction

[0019] FIG. 2 is a schematic structural view of the first embodiment of the liquid crystal display module of the present invention. The liquid crystal display module 2 includes a liquid crystal panel 20 and a backlight module 21 , and the backlight module 21 provides planar light for the liquid crystal panel 20 .

[0020] The liquid crystal panel 20 includes a first substrate 201 , a liquid crystal layer 202 and a second substrate 203 which are sequentially stacked. The backlight module 21 includes a diffusion sheet 22 , a first brightness enhancement sheet 23 , a second brightness enhancement sheet 24 , a first light guide plate 25 , a second light guide plate 27 and a reflection sheet 29 stacked in sequence.

[0021] The first light guide plate 25 is a wedge-shaped plate, which includes a first light incident surface 251, a first light exit surface 252 vertically connected to the first light incident surface 251, and a first light incident surface 251 inclined to the first l...

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Abstract

The backlight module includes stacked up a first light guide plate, and a second light guide plate in sequence. The first light guide plate includes a first bottom face, where there are multiple first microstructures of possessing reflection function. The second light guide plate includes a second bottom face, where there are multiple second microstructures of possessing diffusion function. The backlight module possesses function of switching angular field of coming out light.

Description

【Technical field】 [0001] The invention relates to a backlight module and a liquid crystal display module using the backlight module. 【Background technique】 [0002] As we all know, the viewing angle of liquid crystal displays has always been widely concerned by the industry. Not only liquid crystal displays with wide viewing angles are attracting more and more attention from the market, but also liquid crystal displays with high brightness and small viewing angles that are anti-peeping are also popular in the market. Therefore, a switchable viewing angle liquid crystal display has become one of the development directions in the display field. [0003] At present, the switching of the viewing angle is usually achieved by adding a liquid crystal panel and using a driving circuit to control the opening and closing of the pixel units of the liquid crystal panel. [0004] FIG. 1 is a schematic structural diagram of a liquid crystal display module in the prior art. The liquid c...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02B5/02H01L33/00G02F1/1335
Inventor 简克伟许育儒陈信铭
Owner INNOCOM TECH SHENZHEN