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Light conducting board and area source apparatus

A light guide plate and surface light source technology, applied in optics, optical components, nonlinear optics, etc., can solve the problems that the light guide plate cannot achieve better visual effects, and the surface light source device cannot achieve better visual effects, etc., to achieve good visual effects Effect

Inactive Publication Date: 2006-12-20
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 defect that the light guide plate in the prior art cannot achieve better visual effect, the present invention provides a light guide plate with better visual effect
[0006] In order to overcome the defect that the surface light source device in the prior art cannot achieve better visual effect, the present invention provides a surface light source device with better visual effect

Method used

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  • Light conducting board and area source apparatus
  • Light conducting board and area source apparatus
  • Light conducting board and area source apparatus

Examples

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Embodiment Construction

[0017] Please refer to figure 2 , is a cross-sectional view of the first embodiment of the light guide plate of the present invention. The light guide plate 1 includes a base body 10 , a plurality of scattering units 11 and a transparent film 12 . The substrate 10 includes at least a light incident surface 103 , a light exit surface 101 and a bottom surface 102 . The scattering unit 11 is disposed on the bottom surface 102 , and the transparent film 12 is disposed on the light emitting surface 101 .

[0018] Polymethyl Methacrylate (PMMA), commonly known as acrylic, has a refractive index of 1.49 and is widely used in light guide plates due to its good optical properties. The matrix 10 can be doped with a plurality of scattering particles (not shown in the figure), and the material of the scattering particles is silicon dioxide with high reflectivity, which can also be replaced by tantalum pentoxide (Ta2O5). The scattering particles are used to scatter the light propagatin...

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Abstract

A light guiding plate consists of a base body and a transparent film of which base body comprises a light incoming face, a light outgoing face and a bottom face, transparent film is set on light outgoing face in concave structure with its thickness progressively increased from centre to edge; refractivity of the transparent film is higher than refractivity of base body. The highest brightness of light outgoing for the light guiding plate and face light source device applied with the light guiding plate is at central part so it has excellent visual result.

Description

【Technical field】 [0001] The invention relates to a light guide plate and a surface light source device, in particular to a light guide plate and a surface light source device applied to a liquid crystal display panel. 【Background technique】 [0002] Since the liquid crystal in the liquid crystal display panel itself does not have luminous characteristics, in order to achieve the display effect, a surface light source device must be provided for the liquid crystal display panel. Its function is to provide a surface light source with sufficient brightness and uniform distribution to the liquid crystal display panel. The operating principle is as follows: : The light enters the light guide plate after being emitted from the light source, is reflected by the scattering unit on the light reflection surface of the light guide plate and is output from the light exit surface of the light guide plate, and cooperates with the enhancement effect of the diffusion plate and the prism she...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02B1/10G02F1/13357G02F1/1335
Inventor 吕昌岳余泰成蔡坤荣
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD