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Back light module assembly and its light guide board

A technology of backlight module and light guide plate, applied in optics, nonlinear optics, instruments, etc., can solve the problems of increasing the thickness, weight and cost of backlight module products, and achieve the effect of reducing thickness

Inactive Publication Date: 2008-01-23
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

[0004] Please refer to Fig. 2 and Fig. 3, when the backlight module 8 is applied to a dual-screen mobile phone 9 with an inner display 91 and an outer display 92, because there is only one light-emitting surface, two backlight modules 8 are required respectively The inner display screen 91 and the outer display screen 92 provide surface light sources to realize dual-screen display, which will increase the thickness, weight and cost of products using the backlight module

Method used

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  • Back light module assembly and its light guide board
  • Back light module assembly and its light guide board
  • Back light module assembly and its light guide board

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Experimental program
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Embodiment Construction

[0015] Referring to FIG. 4 and FIG. 5 , they are respectively a perspective view and a plan view of the first surface of the first embodiment of the backlight module of the present invention. The backlight module 1 includes a light guide plate 11 , a light source 12 and a light source cover 13 . The light source 12 is a linear light source such as a Cold Cathode Fluorescence Lamp (CCFL), a Hot Cathode Fluorescence Lamp (HCFL), etc., or a point light source such as a Light Emitting Diode (LED). The light guide plate 11 includes a light incident surface 111 , a first surface 113 and a second surface 115 opposite to each other. The first surface 113 is a light-emitting surface on which a micro-lens structure 1131 with a light-condensing effect is arranged. The second surface 115 includes a light-emitting area and a scattering area. In order to improve the utilization rate of the light source, the areas where no light is emitted, such as the scattering area and the sides, are coa...

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PUM

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Abstract

The invention is a backlight module, comprising a light guide plate and at least a light source, where the light guide plate comprises at least a light incoming surface, a first surface and a second surface, the light source is arranged opposite to the light incoming surface, the light incoming surface receives the light beam emitted from the light source, the first surface is a light outgoing surface and provided with microlens structure, and the second surface includes a light outgoing region with microlens and a scattering region with micro-scattering structure.

Description

【Technical field】 [0001] The invention relates to a backlight module and a light guide plate which can be used for a liquid crystal display. 【Background technique】 [0002] The liquid crystal display device is a kind of non-self-luminous display device, and its display is mainly realized by controlling the passage or non-passage of the light beam emitted by the external light source, so a corresponding backlight or front light module is required, and the backlight or front light module can The light beam emitted by the external light source is guided to the display panel to realize the display function. [0003] Please refer to FIG. 1 , which is a backlight module 8 in the prior art that emits light from one side. The backlight module 8 includes a light guide plate 81 , a reflection plate 82 , a diffusion plate 83 , a light collecting plate 84 , a light source 85 and a light source cover 86 . The light guide plate 81 includes a light incident surface 811 , a bottom surface...

Claims

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Application Information

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