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Backlight module and diffusion board structure used thereby

A technology of backlight module and diffuser plate, applied in optics, nonlinear optics, instruments, etc., can solve problems such as limited diffusion effect

Active Publication Date: 2007-05-30
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the direction of the light rays reaching the lower diffuser 35 is not consistent, the diffusion effect achieved by using a single microstructure is very limited.

Method used

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  • Backlight module and diffusion board structure used thereby
  • Backlight module and diffusion board structure used thereby
  • Backlight module and diffusion board structure used thereby

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Embodiment Construction

[0040] The invention provides a backlight module and a diffusion plate structure used therein. In a preferred embodiment, the backlight module is used for a liquid crystal display device. However, in different embodiments, the backlight module can be used for computer keyboards, mobile phone keys, billboards, and other devices that require planar light sources. Furthermore, the present invention also includes a liquid crystal display device using the backlight module. In a preferred embodiment, the liquid crystal display device of the present invention includes a color liquid crystal display device. However, in different embodiments, the liquid crystal display device of the present invention may also include a monochromatic liquid crystal display device. The liquid crystal display device generally refers to a display device using a liquid crystal panel, including liquid crystal televisions for home use, liquid crystal monitors for personal computers and laptop computers, liq...

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Abstract

The invention discloses a negative phototropism module and its pervasion plate structure. The negative phototropism module mainly contains lamp-house module equipped with light source and pervasion plate structure located on the upper of the lamp-house module. The pervasion plate structure includes board, several astigmatic microstructures and condensing microstructures. The astigmatic microstructures and condensing microstructures are radial arranged on out-light surface or in-light surface of the board. Astigmatic microstructures contain several cambered surface transmission microstructures, each of the cambered surface transmission microstructures possess an arc convex surface. Condensing microstructures possess several convex prism microstructures. The microstructures of convex prism have two corresponding side surfaces which has an included angle theta.

Description

technical field [0001] The invention relates to a backlight module and a structure of a diffuser used therein, in particular to a backlight module for a liquid crystal display device and a structure of a diffuser used therein. Background technique [0002] Backlight modules are widely used in liquid crystal display devices, computer keyboards, mobile phone buttons, billboards and other devices that require light sources to provide planar light sources required by such devices. In particular, in recent years, the market demand for liquid crystal display devices has grown significantly. In order to meet the functional and appearance requirements of liquid crystal display devices, the designs of backlight modules used in liquid crystal display devices are also increasingly diversified. [0003] However, when the backlight module is applied to the liquid crystal display panel, the uniformity of the output light is often an important factor affecting the overall performance of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/02G02B5/04G02F1/1335
Inventor 陈政传
Owner AU OPTRONICS CORP
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