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Back light module and optical plate

A backlight module and optical board technology, applied in optics, optical components, nonlinear optics, etc., can solve the problem of uneven light output from the backlight module 100

Inactive Publication Date: 2009-01-14
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

The matching design of the light-emitting diode 105 and the reflector 106 can reduce the bright area directly above the light-emitting diode 105 to a certain extent, but the backlight module 100 still has the disadvantage of uneven light output

Method used

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  • Back light module and optical plate
  • Back light module and optical plate
  • Back light module and optical plate

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Embodiment Construction

[0018] The backlight module and its optical board of the present invention will be further described in detail below with reference to the drawings and embodiments.

[0019] See figure 2 , shows the backlight module 200 of the preferred embodiment 1 of the present invention, which includes a frame 21 , a reflective plate 22 , an edge-type point light source 25 and an optical plate 20 . The frame 21 includes a rectangular bottom plate 211 and four sidewalls 213 vertically extending from the edge of the bottom plate 211 to the same side thereof and connected to each other. The four side walls 213 and the bottom plate 211 jointly form a cavity 217 for accommodating components such as the point light source 25 , the reflector 22 and the optical plate 20 .

[0020] See image 3 , the optical plate 20 is a rectangular plate matched with the bottom plate 211 of the frame 21 , and includes a light emitting surface 202 and a bottom surface 203 opposite to the light emitting surface ...

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Abstract

An optical plate comprises at least one optical plate unit that comprises an exit face, a bottom face opposite to the exit face and a scattering layer formed on the exit face. A plurality of micro protuberances are formed on the bottom face and each micro protuberance includes at least three side faces which are mutually connected and the horizontal width of each side face decreases gradually along a direction far away from the bottom face; at least one light source containing part is arranged on the bottom face. The invention also provides a backlight module adopting the optical plate and the backlight module has the advantage of even light-exiting.

Description

technical field [0001] The invention relates to a backlight module and its optical board, in particular to a backlight module for liquid crystal display and its optical board. Background technique [0002] Since the liquid crystal itself of the liquid crystal display panel does not have light-emitting properties, it is necessary to provide a light source device, such as a backlight module, for the liquid crystal display panel in order to achieve a display effect. The function of the backlight module is to supply a surface light source with sufficient brightness and uniform distribution to the LCD panel. [0003] See figure 1 , shows a conventional backlight module 100 , which includes a frame 101 , a reflector 102 , a diffuser 103 , a prism sheet 104 and at least one LED 105 . The frame 101 includes a bottom plate 1011 and a plurality of sidewalls 1013 vertically extending from the edge of the bottom plate 1011 to the same side thereof. The bottom plate 1011 and the plura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00G02F1/13357G02F1/1335
CPCG02B6/0051G02B6/0036G02B6/0061G02B6/0021
Inventor 章绍汉
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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