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Light board and planar light-emitting device

A light guide plate, light incident surface technology, applied in optics, nonlinear optics, diffusing elements, etc., can solve the problem of uneven light emission, and achieve the effect of uniform light emission

Inactive Publication Date: 2007-03-28
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

[0009] In order to overcome the defect of uneven light emission when the light guide plate and the planar light emitting device in the prior art use a line light source as the light source, the present invention provides a light guide plate and a planar light emitting device with a high uniformity of light emission and a line light source

Method used

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  • Light board and planar light-emitting device
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  • Light board and planar light-emitting device

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Embodiment Construction

[0021] Please refer to FIG. 3 and FIG. 4 together, which are a side view of the first embodiment of the light guide plate of the present invention and a schematic diagram of dot distribution on the bottom surface. The light guide plate 32 includes a light incident surface 323 , a light exit surface 321 , a plurality of light reflection surfaces 324 , a bottom surface 322 and a plurality of light diffusing dots 36 distributed on the bottom surface 322 . Wherein, the light guide plate 32 is a rectangular plate, and the light emitting surface 321 and the bottom surface 322 are oppositely disposed.

[0022] The light guide plate 32 is made of transparent materials such as acrylic resin, polycarbonate, polyethylene resin or glass. The light incident surface 323 receives light from a light source (not shown in the figure) and guides it into the light guide plate 32 . The light emitting surface 321 guides the light out of the light guide plate 32 . The light reflecting surface 324 ...

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PUM

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Abstract

The invention is a kind of light board and the flat brighten device, the light board includes the first surface, the second surface, several side faces, and several scattering units. The second surface is light exit face, the scattering unit is set on the first surface, and at least one of the several side faces at least is entrance face. The projecting area of the scattering unit on the first surface is in direction ratio to reciprocal quadratic sum of distance between the unit and each coordinate. The scattering unit can improve the evenness degree.

Description

【Technical field】 [0001] The invention relates to a light guide plate and a planar light emitting device using the light guide plate, in particular to a light guide plate with dot distribution and a planar light emitting device using the light guide plate. 【Background technique】 [0002] Since the liquid crystal in the liquid crystal display panel itself does not have light-emitting characteristics, in order to achieve the display effect, it is necessary to provide a light source device for the liquid crystal display panel, such as a flat light-emitting device, whose function is to supply the liquid crystal display panel with a surface with sufficient luminance and uniform distribution. light source. [0003] The prior art planar light emitting device is mainly composed of a light source, a light guide plate, a reflection plate, a diffuser plate and a prism plate. Wherein, the light source can be arranged on one side or two opposite sides of the light guide plate and emit l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02G02F1/13357G02F1/1335
Inventor 蔡坤荣
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD