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Area illuminating apparatus and light conducting plate thereof

A surface-emitting, light-guiding plate technology, applied in the direction of light guides, optics, optical components, etc., can solve the problems of unsatisfactory effects and insufficient consideration of different diffusion effects, and achieve the effect of improving the overall uniformity

Inactive Publication Date: 2008-12-24
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, since the light emitting diode 21 is a point light source, the light emitted by it has a certain divergence angle, and the incident angles of the light incident on different slots 111a are also different, so the slots 111a of the surface light-emitting device are constant Obviously, the different diffusion effects on light rays at different incident angles have not been fully considered. Therefore, although the surface light-emitting device can achieve a certain degree of uniformity of light output brightness through the cut groove 111a, the effect is still unsatisfactory.

Method used

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  • Area illuminating apparatus and light conducting plate thereof
  • Area illuminating apparatus and light conducting plate thereof
  • Area illuminating apparatus and light conducting plate thereof

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no. 1 approach

[0019] Please refer to image 3 and Figure 4 , is the first embodiment of the surface light-emitting device of the present invention, the surface light-emitting device 30 includes a light guide plate 31 , two point light sources 33 and a reflector 35 . The light guide plate 31 is a wedge-shaped light guide plate, which includes a light incident surface 313 , a bottom surface 315 intersecting the light incident surface 313 , and a light exit surface 311 opposite to the bottom surface 315 . The two point light sources 33 are arranged relative to the light incident surface 313 and may be light emitting diodes or small light bulbs. The bottom surface 315 of the light guide plate 31 is provided with a plurality of regularly distributed dots 37 , and the light emitting surface 311 is provided with a plurality of V-shaped grooves 3111 . The reflective plate 35 is attached to the bottom surface 315 of the light guide plate 31 , and the reflective plate 35 can also be replaced by a ...

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Abstract

The present invention discloses one kind of area light emitting device and its light guiding board. The area light emitting device includes at least one point light source and one light guiding board. The light guiding board includes at least one light incoming plane, one bottom plane crossed with the light incoming plane, and one light outgoing plane opposite to the bottom plane. The light incoming plane has several slots with gradiently changing width and depth, and the point light source is aligned with the slot with maximum width or depth.

Description

【Technical field】 [0001] The invention relates to a surface emitting device and a light guide plate thereof, in particular to a surface emitting device used in a liquid crystal display and a light guide plate thereof. 【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 surface light-emitting device for the liquid crystal display panel. Its function is to supply a surface light source with sufficient brightness and uniform distribution to the liquid crystal display panel. [0003] A surface light-emitting device of the prior art such as figure 1 and figure 2 As shown in Chinese Patent Application No. 01112454 published on November 21, 2001, the surface light emitting device includes a light source 100 and a light guide plate 101 . [0004] The light source 100 has two light emitting parts 102 , and the light emit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02B6/00G02B5/02G02F1/1335
Inventor 黄全德黄文正
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD