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Backlight module

A backlight module and light mixing technology, which is applied in the field of backlight modules with light mixing boards, can solve the problems of uneven light mixing, affecting optical quality, and thick body thickness, etc., to achieve both optical quality, shortened intervals, and good light mixing effects Effect

Inactive Publication Date: 2013-11-06
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the light mixing cavity 101 needs to have a sufficient distance H1 to achieve an excellent light mixing effect, which is why the thickness of the body of the existing liquid crystal display using a direct-lit backlight module is generally thick.
If the distance between the light mixing cavity is shortened to make the liquid crystal display thinner, the light mixing will not be uniform enough, which will affect the optical quality

Method used

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Examples

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Embodiment Construction

[0048] see figure 2 , figure 2 Shown is a schematic cross-sectional view of the backlight module of the first preferred embodiment of the present invention, the backlight module 200 is a direct-type design, which includes a frame 210, a reflector 220, a diffusion plate 230, a plurality of optical films 240, and a light emitting unit 250 and light mixing plate 260. The inner surface of the frame 210 is provided with a reflective plate 220, and a plurality of light emitting units 250 are arranged on the reflective plate 220. The diffuser plate 230 is connected with the frame 210 and forms a light mixing cavity 201. The light emitting unit 250 and the reflective plate 220 are located in the light mixing cavity 101. Inside. A light mixing plate 260 is added between the light emitting unit 250 and the diffuser plate 230. In this embodiment, the edge of the light mixing plate 260 is fixed to the frame 210, and the light emitting unit 250 is a light-emitting diode (Light-Emitting...

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Abstract

The invention provides a backlight module. The backlight module comprises a frame, lighting units and light mixing plates, wherein the lighting units are configured on the inner surface of the frame, and the light mixing plates are arranged above the lighting units; a plurality of penetrating parts are distributed on the lighting mixing plates, provided with through holes with different pore diameters, arranged for energy density of light emitted by the lighting units and distributed on the lighting mixing plate, and used for providing lower light permeability for areas with higher light energy density as well as providing higher light permeability for areas with lower light energy density so as to realize the purpose of uniform light mixing.

Description

technical field [0001] The present invention relates to a backlight module, and in particular to a backlight module with a light mixing plate. Background technique [0002] In the existing display market, liquid crystal displays, known for their thinness and lightness, have replaced traditional image tube displays and become the mainstream of the market. The main structure of the liquid crystal display can be divided into two parts, including the liquid crystal display panel and the backlight module. The backlight module has a key influence on the thickness of the liquid crystal display, and the backlight module can be divided into two types: side-illuminated and direct-lit. Among them, the direct-type design has the advantage of being able to control the brightness by partition, which can improve the contrast of the display screen and reduce power consumption. Therefore, the direct-type backlight module is becoming more and more common nowadays. [0003] Please refer to f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V13/00F21V5/00G02F1/13357F21Y101/02
Inventor 张继圣林苏逸杨承勋徐明君陈政传
Owner AU OPTRONICS CORP
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