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Backlight module

A technology for backlight modules and light sources, applied in optics, nonlinear optics, diffusing elements, etc., can solve the problems of large electromagnetic induction coupling interference, high cost, complex structure, etc., and achieve the effect of improving accuracy and saving costs.

Inactive Publication Date: 2004-11-24
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

[0006] In order to overcome the shortcomings of the prior art backlight module, which has relatively large electromagnetic induction coupling interference, complex structure and high cost, the present invention provides a backlight module with no coupling interference to electromagnetic induction, simple structure and low cost.

Method used

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Embodiment Construction

[0013] Please refer to figure 2 and image 3 The backlight module 20 of the present invention includes a pair of light sources 26 , a prism plate 24 , a diffuser plate 23 , a light guide plate 21 and a reflector plate 22 . The light guide plate 21 includes two light incident surfaces 212, a light exit surface 214 and a bottom surface 213 facing away from the light exit surface 214. The reflector 22 is located on the bottom surface 213 side of the light guide plate 21. The glossy surface 212 is provided. figure 2 The reflector 22 in the figure is in use, and its two ends extend to both sides of the light guide plate 21 to cover both sides of the light guide plate 21, image 3 The reflector 22 in the middle is in the unfolded state.

[0014] Two sides of the light guide plate 21 respectively have a pair of opposite flanges 211 protruding from the light incident surface 212 of the light guide plate 21 . The four flanges 211 respectively define four through holes 2111 for ass...

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PUM

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Abstract

The back light module includes at least one light source, one light guiding board and one reflecting board. The light guiding board includes at least one incident plane, one outgoing plane and one bottom plane opposite to the outgoing plane. The reflecting board is located on the side of the bottom of the light guiding board, and the light source is located on the side of the incident plane of the light guiding board. The light guiding board has at least one pair of oppositely set flanges protrudent from the incident plane and with one through hole, and the light source has its two ends held inside the through hole.

Description

【Technical field】 [0001] The invention relates to a backlight module, in particular to a backlight module suitable for a liquid crystal display using an electromagnetic induction pen touch input panel. 【Background technique】 [0002] Since the liquid crystal in the LCD panel itself does not have luminous properties, in order to achieve the display effect, it is necessary to provide the LCD panel with a light source device, such as a backlight module, whose function is to supply the LCD panel with sufficient brightness and uniform distribution. surface light source. [0003] Such as figure 1 As shown, the backlight module in the prior art is mainly composed of a light source 5 , a light source cover 6 , a light guide plate 3 , a reflection plate 4 , a diffuser plate 2 and a prism plate 1 . Wherein, the light source 5 is a line light source or a point light source, mainly including three types of electroluminescent lamp (Electroluminescent Lamp, EL), light-emitting diode (Li...

Claims

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Application Information

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IPC IPC(8): G02B5/02G02F1/13357
Inventor 陈弥坚
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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