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Light conducting plate and backlight module using the same

A technology of backlight module and light guide plate, which is applied in optics, light guide, optical components, etc., can solve the problems of low luminance and poor optical performance of light guide plate, and achieve the effects of small energy loss, low cost and simple structure

Inactive Publication Date: 2004-06-16
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 solve the first technical problem of low luminance and poor optical performance of the prior art light guide plate, the present invention provides a light guide plate with high luminance and excellent optical performance

Method used

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  • Light conducting plate and backlight module using the same
  • Light conducting plate and backlight module using the same
  • Light conducting plate and backlight module using the same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0020] see figure 2 In the first embodiment of the backlight module of the present invention, the backlight module 10 includes a light guide plate 20 and two light sources 30 . The light guide plate 20 includes two incident surfaces 21 , an outgoing surface 22 connected to the incoming surfaces 21 , and a bottom surface 24 opposite to the outgoing surfaces 22 . The light source 30 includes a lamp tube 31 and a part of a reflector 32 surrounding the lamp tube 31 . The two light sources 30 are respectively disposed opposite to the two incident surfaces 21 of the light guide plate 20 .

[0021] see together figure 2 and image 3 , a plurality of protrusions 23 are distributed on the bottom surface 24 of the light guide plate 20 . The plurality of protrusions 23 are used to scatter the light beams, destroy the total reflection condition for the light beams entering from the incident surface 21 to transmit inside the light guide plate 20 , and improve the brightness and unifo...

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Abstract

A backlight module comprising a light conducting board, a tube and a reflector encircling the tube, wherein the light conducting board is used for guiding the transmission direction of the light beams from the tube and the reflector and increasing the brilliance and uniformity for the outgoing light rays, the light conducting board includes an incident plane, an outgoing plane and a bottom plane arranged opposite the outgoing plane, the incident plane intersects the outgoing plane, a plurality of depressions are distributed on the bottom plane, the dissemination planes of the multiple depressions form a curved surface, the bottom plane and the projecting dissemination plane are coated by reflection films.

Description

【Technical field】 [0001] The invention relates to a backlight module and a light guide plate thereof, in particular to a light guide plate with high brightness and a backlight module using the light guide plate. 【Background technique】 [0002] Due to the advantages of lightness, thinness, and low power consumption, liquid crystal display devices are widely used in modern information equipment such as notebook computers, mobile phones, and personal digital assistants. Since the liquid crystal itself does not have luminous characteristics, a backlight module needs to be provided for it to realize the display function. [0003] The prior art backlight module includes a light source and a light guide plate, the light source is disposed relative to the light incident surface of the light guide plate, the light guide plate guides the transmission direction of the light beam emitted from the light source, and converts the line light source or point light source into a surface light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V8/00G02B5/02G02F1/1335
Inventor 吕昌岳余泰成陈杰良
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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