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Backlight module and light guide plate thereof

A technology of light guide plate and light source, applied in the directions of light guide, optics, optical components, etc., can solve the problems of poor optical effect and uneven brightness of light output, and achieve the effect of improving the uniformity of light output, uniform light output and good optical effect.

Inactive Publication Date: 2010-01-20
深圳市博川科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the light output brightness of the above-mentioned backlight module 10 is uneven, and the optical effect is not good.

Method used

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  • Backlight module and light guide plate thereof
  • Backlight module and light guide plate thereof
  • Backlight module and light guide plate thereof

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Embodiment Construction

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

[0019] See also figure 2 and image 3 , the backlight module 20 of the preferred embodiment 1 of the present invention includes a light source 21 , a light guide plate 22 and a reflector 23 . The light source 21 is a CCFL. The light guide plate 22 is a rectangular transparent plate, which includes a light incident surface 221 , a light exit surface 222 connected to the light incident surface 221 , and a reflective surface 223 opposite to the light exit surface 222 . The light source 21 is disposed adjacent to the light incident surface 221 . A plurality of elongated V-shaped protrusions 2221 are disposed on the light emitting surface 222 . The reflector 23 is disposed on the periphery of the light source 21 for reflecting the light emitted by the light source 21 into the light guide plate 22 .

[0020] ...

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Abstract

The invention relates to a light guide plate, which comprises a light incident surface, a light emergent surface connected with the light incident surface and a reflecting surface relative to the light emergent surface, wherein at least one surface of the light emergent surface and the reflecting surface is provided with a plurality of microstructures; the plurality of microstructures extend along a direction facing to the light incident surface from one side away from the light incident surface; and the extending directions of the plurality of microstructures are gradually changed into arc lines intertwined with one another from parallel straight lines. The invention also provides a backlight module using the light guide plate. The backlight module has the advantages of uniform luminance and good optical effect.

Description

technical field [0001] The invention relates to a backlight module and a light guide plate thereof, in particular to an edge-light type backlight module and a light guide plate thereof. 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. At present, there are two types of backlight modules: direct type and edge type. Since the side type backlight module is easier to realize thin design, it is widely used. [0003] A conventional edge-lit backlight module 10 includes a light source 11 and a light guide plate 12 . The light guide plate 12 includes a light incident surface 121 , a light exit surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00G02F1/13357
CPCG02B6/0036G02B6/0035
Inventor 廖明毅
Owner 深圳市博川科技有限公司
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