Backlight module

A backlight module and light technology, applied in optics, light guides, light sources, etc., can solve problems such as poor color saturation, unable to meet consumers' requirements for higher and higher color saturation of display devices, and improve color saturation degree of effect

Inactive Publication Date: 2009-12-23
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

However, the color saturation of the LCD using this backlight module is relatively poor, and cannot meet the increasingly high color saturation requirements of consumers for display devices.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] Such as figure 1 As shown, a backlight module 2 provided by the first embodiment of the present invention is provided. The backlight module 2 includes an upper light guide plate 20 and a lower light guide plate 22 stacked on each other. The upper light guide plate 20 includes a top surface 200 , a bottom surface 202 , a first end surface 203 and a second end surface 204 opposite to the first end surface 203 . The lower light guide plate 22 includes a top surface 220 , a bottom surface 222 , a third end surface 223 and a fourth end surface 224 opposite to the third end surface 223 . The top surface 200 of the upper light guide plate 20 is the light emitting surface of the backlight module 2 , and the bottom surface 222 of the lower light guide plate 22 is the reflective surface of the backlight module 2 . The bottom surface 202 of the upper light guide plate 20 and the top surface 220 of the lower light guide plate 22 are stacked on each other. The upper and lower lig...

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PUM

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Abstract

The invention relates to a backlight module comprising an upper light guide plate and a lower light guide plate which are mutually stacked and arranged. The top surface of the upper light guide plate is a light extraction surface; the bottom surface of the lower light guide plate is a reflecting surface; and the upper light guide plate and the lower light guide plate are respectively provided with a light entry surface. LED light source assays of different colors are arranged on the light entry surface, and a selective light-transmitting film layer corresponding to the colors of the LED light source assays is plated on the stacking surface between the upper light guide plate and the lower light guide plate so that rays of different colors are mixed into white light or rays of different chromas between the upper light guide plate and the lower light guide plate to improve the color saturation of an LCD (Liquid Crystal Display) device using the backlight module.

Description

technical field [0001] The invention relates to a backlight module, in particular to an LED backlight module. Background technique [0002] In recent years, liquid crystal display devices (LCDs) have become the mainstream of flat panel display devices due to their advantages of high brightness and light weight. Because the liquid crystal display panel in the LCD itself cannot emit light, it is necessary to use an LED surface light source device that emits uniform light, such as a backlight module (Backlight Module), as its LED light source array to display screen images. The backlight module usually includes a point LED light source array or a line LED light source array and a light guide plate that planarizes the light emitted by the point LED light source array or line LED light source array to provide an LED surface light source to illuminate the liquid crystal display panel. For the structure, principle, characteristics and other aspects of the backlight module, please ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357G02B6/00G02B1/10F21V8/00F21Y101/02G02F1/1335
CPCG02B6/002G02B6/0043G02B6/0031G02B6/0061G02F1/133615G02B6/0073G02B6/0076
Inventor 张仁淙
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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