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Multi-layer light refraction and diffusion element and backlight module using the same

A technology of backlight module and light refraction, which is applied in the direction of diffusion elements, optics, nonlinear optics, etc., and can solve the problems of power consumption, heat dissipation, and uneven light diffusion

Inactive Publication Date: 2008-02-27
EXPLOIT TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] In this way, although the luminance can be greatly improved, in order to avoid uneven light diffusion and take into account the intensity requirements, the high-strength polymer sheet with low light transmittance has blocked most of the light, resulting in the need for more Multiple light sources can provide normal luminance, resulting in power consumption and heat dissipation problems

Method used

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  • Multi-layer light refraction and diffusion element and backlight module using the same
  • Multi-layer light refraction and diffusion element and backlight module using the same
  • Multi-layer light refraction and diffusion element and backlight module using the same

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Embodiment Construction

[0066] In order to make the above objects, functional features, and advantages of the present invention more clearly understood, the present invention will be described in detail below through preferred embodiments in conjunction with the accompanying drawings.

[0067] Please refer to Fig. 3, it is the multi-layer light refraction diffusion element 3 of the first embodiment of the present invention, comprises transparent substrate 31, and this transparent substrate 31 can be the following materials, but not limited to following materials: polystyrene, polyacrylonitrile methyl acrylate, polycarbonate, polyethylene, polypropylene, polyvinyl chloride, epoxy resin or polyethylene terephthalate, preferably, the surface of the substrate 31 can also be roughened to make the surface A certain roughness to increase its diffusion effect. The upper and lower surfaces of the transparent substrate 31 are uniformly coated with diffusion layers: an upper diffusion layer 32 and a lower diffu...

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Abstract

A multiplayer photorefraction diffused optics element includes the base sheet which has the first surface and the second surface corresponding to the first surface; at least two diffused layers in which at least one is set on the first surface and at least one diffused layer is set on the second surface. The each diffused layer includes at least above one kind of the diffused particle with different size and the optical material which has the different refraction coefficient.

Description

technical field [0001] The invention relates to a light refraction diffusion element and a backlight module using the diffusion element, in particular to a backlight module for a flat panel display. Background technique [0002] FIG. 1 shows a known edge-lit backlight module 1, which arranges a light source including a lamp reflector 12 and a cold-cathode tube 13 on the side of a light guide plate 11, and the light enters the light guide plate 11 and passes through the printed reflective dots 11a. The light is uniformly reflected, and part of the light is uniformly reflected by the reflection sheet 15, and then diffused and concentrated by the optical film 14 to form a uniform light source. Since the backlight module of this type is arranged on the side, space needs to be reserved to form the display, resulting in too large frame of the display, and the reserved space is limited, so it is impossible to install more light sources, which limits the improvement of luminance. ...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02F1/1335
Inventor 杨允斌曾杞良
Owner EXPLOIT TECH
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