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Light guide plate

A technology of light guide plates and particles, applied in the field of light guide plates, can solve the problems of insufficient uniformity of light

Inactive Publication Date: 2010-08-18
TAIWAN NANOTECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional light guide plate is made of polymethylmethacrylate (PMMA) with a smooth surface by injection molding, and then printed on the bottom surface of the light guide plate with a material with high reflectivity and no light absorption. Circular or square diffusion points, when the light source is placed on the side of the light guide plate, these diffusion points can reflect the light upwards, so that the light is emitted from the top surface of the light guide plate, but the light emitted from the top surface of the light guide plate is not uniform enough, it needs to be diffused The function of the board can form a uniform surface light source

Method used

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Embodiment Construction

[0016] The structure and effect of the present invention will be described in detail by citing the following embodiments in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, the light guide plate 10 provided by a preferred embodiment of the present invention includes a substrate 12 and a plurality of reflective particles 14 .

[0018] The substrate 12 is made of thermoplastics, such as methyl methacrylate resin, polyvinyl chloride or polystyrene, wherein the methacrylate resin contains polymethyl methacrylate (polymethyl methacrylate), polyethyl methacrylate, polypropyl methacrylate, polybutyl methacrylate or polypentyl methacrylate.

[0019] Each reflective particle 14 is spherical and uniformly dispersed in the substrate 12. According to the analysis results of HORIBA LB-500 high-concentration ultrafine particle size distribution analyzer (dynamic light scattering submicron particle size distribution analyzer), the average particle size of each...

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Abstract

The invention relates to a light guide plate which is characterized by comprising a base material and a plurality of reflection particles, wherein the base material is made from thermoplastic plastics; the reflection particles are spread in the base material, and the average particle diameter is 0.1 mum to 100 mum; each reflection particle is respectively provided with a core and a shell made from metallic oxides including Al2O3,ZnO or ZrO2 and the like; the core is made from SiO2 or TiO2 or materials the same as that of the shell. Therefore, the light guide plate has high light transmittance, can also uniformly spread light rays sent from a light source, and can be used for replacing combination of the conventional light guide plates and diffusion plates.

Description

technical field [0001] The invention relates to a light guide plate, in particular to a light guide plate with high light transmittance and capable of uniformly diffusing light emitted by a light source. Background technique [0002] The backlight module used in general liquid crystal display mainly includes light source, light guide plate, reflector, diffuser plate, brightness enhancement film and polarized light conversion film. The brightness is uniform. The reflector is used to prevent light from leaking from the bottom of the light guide plate to increase the efficiency of light use. The function of the diffuser is to diffuse the light emitted by the light guide plate into a uniform surface light source. [0003] The traditional light guide plate is made of polymethylmethacrylate (PMMA) with a smooth surface by injection molding, and then printed on the bottom surface of the light guide plate with a material with high reflectivity and no light absorption. Circular or s...

Claims

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Application Information

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IPC IPC(8): F21V8/00G02F1/13357
Inventor 谢政洋
Owner TAIWAN NANOTECH CORP
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