Light conducting board and backlight module

A technology of backlight module and light guide plate, applied in the direction of light guide, optics, optical components, etc., can solve the problem of not being able to fundamentally eliminate the shadow area, etc., and achieve the effect of improving the uniformity of light emission and the utilization rate of light energy.

Active Publication Date: 2007-11-28
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the deflection angle β is limited (for the light guide plate made of PMMA, the maximum deflection angle is less than 50 degrees), so the above structure cannot fundamentally eliminate the shadow area

Method used

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  • Light conducting board and backlight module
  • Light conducting board and backlight module
  • Light conducting board and backlight module

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0034] The backlight module of the present invention will be further described in detail below with reference to the drawings and multiple embodiments.

[0035] Please refer to FIG. 1 to FIG. 3 together. The first embodiment of the present invention (please add the description of R1) provides a backlight module 10, which includes: a light guide plate 12, the light guide plate 12 includes a light incident surface 120, A light-emitting surface 122 connected to the light-incident surface 120, a light-reflecting surface 124 corresponding to the light-emitting surface 122, and two side surfaces 126, 128 connected to the light-incident surface 120; Light emitting diode (Light Emitting Diode, LED) light sources 14 disposed on the light surface 120 , each light source 14 includes a light emitting surface 140 parallel to the light incident surface 120 of the light guide plate 12 . The light guide plate 12 protrudes and forms a light diffusion part 16 corresponding to each light source ...

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PUM

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Abstract

The invention relates to a light guide plate, comprising a light inputting face, a light outputting face connected with the light inputting face and a reflection face opposite to the light outputting face. Whereinto, at least an extrusive diffusion part is set on the light inputting face on the light guide plate. A reflection hole is set at one side of the reflection face of light guide plate by the light diffusion part. The invention also provides a backlight module, comprising a light guide plate. The light guide plate comprises a light inputting face, a light outputting face connected with the light inputting face, a reflection face opposite to the light outputting face and at least a light source with lighting face. The light source is set at one side of light inputting face of light guide plate and the lighting face of light source is faced to the light inputting face of light guide plate. Whereinto, at least an extrusive diffusion part is set on the light inputting face on the light guide plate at the corresponding position of light source. A reflection hole is set at one side of the reflection face of light guide plate by the light diffusion part.

Description

technical field [0001] The invention relates to a light guide plate and a backlight module, in particular to a side-mounted light guide plate and a backlight module used in the liquid crystal display field. Background technique [0002] With the wide application of liquid crystal display (Liquid Crystal Display, LCD) in electronic products such as TV, monitor, notebook computer, mobile phone, personal digital assistant (Personal Digital Assistant, PDA), digital camera, etc., the backlight module used for liquid crystal display lighting The demand for LED display is increasing day by day, and at the same time, the requirements of electronic products for liquid crystal display lighting devices are also constantly improving. High brightness, light and thin, integrated, low cost, low energy consumption, long life, etc. have become the development direction of backlight modules. The side-mounted backlight module is one of the most widely used backlight modules. The so-called si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00G02F1/13357G02F1/1335
CPCG02B6/0018G02B6/0016
Inventor 杨兴朋严瑛白金国藩
Owner TSINGHUA UNIV
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