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Backlight module and light guiding board

A technology of backlight module and light guide plate, applied in optics, nonlinear optics, instruments, etc., can solve the problem of low brightness in the center of the light guide plate, and achieve the effect of good visual effect

Inactive Publication Date: 2005-01-19
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

[0005] In order to overcome the defect that the central luminance of the prior art light guide plate is lower than the surrounding luminance, the present invention provides a light guide plate with a higher central luminance and gradually decreasing luminance from the center to the surroundings

Method used

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  • Backlight module and light guiding board
  • Backlight module and light guiding board
  • Backlight module and light guiding board

Examples

Experimental program
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Embodiment Construction

[0019] see Figure 4 and Figure 5 , is a structural schematic diagram of the backlight module of the present invention and a schematic diagram of the luminance distribution of the light guide plate. The backlight module includes a set of line light sources 10, a set of reflectors 11 arranged around the line light source 10, a light guide plate 20 and a light enhancement sheet 25, and the light guide plate 20 includes a light incident surface 201, a light exit surface 203 and a bottom surface 202 , the line light sources 10 are respectively located on the sides of the light incident surface 201 of the light guide plate 20 . The light emitted by the line light source 10 is transmitted in the light guide plate 20 , reflected multiple times between the light incident surface 201 and the bottom surface 202 , and finally exits from the light exit surface 203 and enters the brightness enhancement sheet 25 . The line light source 10 can be a CCFL (Cold Cathode Fluorescent Lamp, col...

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PUM

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Abstract

It is an aphototropism module comprises light conductive plate and light source. The light conductive material comprises fluorescent powder material and resin material, wherein; the fluorescent powder is located inside the light conductive plate and decrease from center to circumferential end

Description

【Technical field】 [0001] The invention relates to a backlight module and a light guide plate thereof, in particular to a backlight module for 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, a light source device such as a backlight module must be provided for the liquid crystal display panel. The backlight module includes a light source and a light guide plate, and the light source is arranged on a On the side, the light emitted by the light source is incident on the light guide plate, and the surface light source with sufficient brightness and uniform distribution is supplied to the liquid crystal display panel through the light guide function of the light guide plate. [0003] A prior art backlight module such as figure 1 and figure 2 As shown, the backlight module includes a s...

Claims

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Application Information

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IPC IPC(8): G02B1/04G02B5/02G02F1/13357
Inventor 吕昌岳余泰成陈杰良
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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