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Light guide plate and back light module

A technology of light guide plate and light incident surface, applied in optics, nonlinear optics, diffuser elements, etc., can solve the problems of small use range and low brightness of light guide plate, achieve wide use range, increase light output brightness, and increase brightness Effect

Inactive Publication Date: 2006-06-07
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

[0005] In order to overcome the problems of small use range and low brightness of the light guide plate in the prior art, the present invention provides a light guide plate with wide application range, uniform light emission and high brightness

Method used

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  • Light guide plate and back light module
  • Light guide plate and back light module
  • Light guide plate and back light module

Examples

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Embodiment Construction

[0020] see figure 2 , is a bottom view of the first embodiment of the light guide plate of the present invention. The light guide plate 20 includes a light incident surface 21, a bottom surface 22 adjacent to the light incident surface 21, and a light exit surface opposite to the bottom surface 22. The bottom surface 22 has a plurality of prisms 221 concave inward, and multiple A prism 221 forms a prism group. The plurality of prisms 221 are triangular prisms. The vertical direction of the working surface 2211 of the plurality of prisms 221 in the first row points to the first position A, the vertical direction of the working surface 2212 of the plurality of prisms 221 in the second row points to the second position B, and the plurality of prisms in the third row The vertical direction of the 221 working surface 2213 points to the first position A, the vertical direction of the working surfaces 2214 of the multiple prisms 221 in the fourth row points to the second position ...

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Abstract

The light guide plate for LCD includes one light incoming surface and one bottom surface. The bottom surface is adjacent to the light incoming surface and has several inwards concave prisms, the prisms are divided into several prism groups, and the prisms in the same group have the work surfaces with perpendicular lines pointing to the same position. The light guide plate of the present invention has wide application range, homogeneous outgoing light and high brightness.

Description

【Technical field】 [0001] The invention relates to a light guide plate and a backlight module used for a liquid crystal display device. 【Background technique】 [0002] In recent years, with the colorization and size diversification of liquid crystal display devices, its application fields are more extensive, such as mobile phones, notebooks, desktop computers and LCD TVs. Because the liquid crystal display device is a passive device and cannot emit light by itself, a light source system needs to be used as the surface light source of the liquid crystal display device. The backlight module is a light source system, in which the light guide plate is an important component in the backlight module, which is used to guide the transmission direction of the light beam emitted from the light source, and convert the line light source or point light source into a surface light source to emit. [0003] see figure 1 , is a schematic diagram of a backlight module 10 in the prior art. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02B5/02
Inventor 蔡坤荣
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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