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Backlight module, liquid crystal display device of using the backlight module

A technology of liquid crystal display device and backlight module, which is applied in the directions of light guide, optics, optical components, etc., can solve the problems of loose structure, loose structure and low brightness of the backlight module, and achieve the effect of compact structure, uniform beam and high brightness

Inactive Publication Date: 2009-02-25
INNOCOM TECH (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 problems of loose structure and low brightness of existing backlight modules, it is necessary to provide a backlight module with compact structure and high brightness
[0007] In order to overcome the problems of loose structure and low brightness of existing liquid crystal display devices, it is necessary to provide a liquid crystal display device with compact structure and high brightness

Method used

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  • Backlight module, liquid crystal display device of using the backlight module
  • Backlight module, liquid crystal display device of using the backlight module
  • Backlight module, liquid crystal display device of using the backlight module

Examples

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Embodiment Construction

[0016] see figure 2 , is a partial cross-sectional view of a preferred embodiment of the backlight module of the present invention. The backlight module 200 includes a light guide plate 220 , a light emitting diode 210 , a reflection sheet 230 , a diffusion sheet 240 and a flexible circuit board 250 . The light guide plate 220 has a light emitting surface 223 and a bottom surface 222 . Please also see image 3 , the light-emitting surface 223 of the light guide plate 220 has a prism ring structure, which is distributed as a Fresnel lens (Fresnel lens) prism ring. . The light emitting diodes 210 are accommodated at the bottom of the light guide plate 220 and are disposed toward the center of the prism ring. The reflective sheet 230 is disposed opposite to the bottom surface 222 of the light guide plate 220 . The diffusion sheet 240 is disposed opposite to the light emitting surface 223 of the light guide plate 220 . The flexible circuit board 250 is connected to the LED ...

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PUM

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Abstract

A back light module is prepared as containing LED in light guide plate with light outgoing surface and forming contained LED and said light guide plate to be an integral unit, arranging prism-circle structure on said light outgoing surface and making center of said prism-circle be corresponded to position of LED.

Description

【Technical field】 [0001] The invention relates to a backlight module and a liquid crystal display device using the backlight module, in particular to a backlight module with light emitting diodes and a liquid crystal display device using the backlight module. 【Background technique】 [0002] Liquid crystal display devices have the advantages of high image quality, no radiation, small size, light weight, and power saving. They have been widely used in various information, communication, and consumer electronics products, and have gradually replaced cathode ray tubes as the mainstream of display devices. However, most liquid crystal display related products require a backlight module to provide a light source for the display function because the liquid crystal panel itself cannot emit light. Backlight modules generally use cold-cathode fluorescent tubes or light-emitting diodes as light sources. Especially light-emitting diodes have been widely used in various light source ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02B5/00
CPCG02F2203/22H01L33/54G02F1/133603G02B6/0038G02F2001/133607G02B6/0073G02F1/133607
Inventor 谢祥晖
Owner INNOCOM TECH (SHENZHEN) CO LTD
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