Back light module unit and LCD device

A technology of backlight module and light guide plate, applied in optics, nonlinear optics, static indicators, etc., can solve the problem of low light utilization rate, and achieve the effect of ensuring light output quality, increasing stability, and preventing light utilization rate decline.

Inactive Publication Date: 2009-09-23
INNOCOM TECH (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problem of low light utilization in the prior art, it is necessary to provide a backlight module with high light utilization

Method used

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  • Back light module unit and LCD device
  • Back light module unit and LCD device
  • Back light module unit and LCD device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] see image 3 , is an exploded perspective view of the first embodiment of the liquid crystal display device of the present invention. The liquid crystal display device 2 includes a liquid crystal panel 29 and a backlight module 20 adjacent to the liquid crystal panel 29 .

[0027] The backlight module 20 includes a light guide plate 27 with a light incident surface 26 , a flexible circuit board 21 , a plurality of light emitting elements 25 , a fixing piece 222 and a frame 23 . The light guide plate 27 , the flexible circuit board 21 , the plurality of light emitting elements 25 and the fixing piece 222 are housed in the frame 23 .

[0028] The flexible circuit board 21 includes a light source installation area 212 , and the light emitting element 25 is generally a light emitting diode, which is disposed in the light source installation area 212 .

[0029] The fixing sheet 222 is an L-shaped metal sheet body, which includes a first blade 226 and a second blade 228 per...

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Abstract

The invention relates to a backlight module and a liquid crystal display device using the backlight module. The backlight module includes a light guide plate, a flexible circuit board, a frame and a holding structure. The light guide plate is arranged in the frame and has a light incident surface. The flexible circuit board includes a light source installation area provided with light emitting elements, and the light emitting elements are interposed between the frame and the light incident surface of the light guide plate. The holding structure clamps the flexible circuit board between the frame and the holding structure, the holding structure includes a fixing piece and a fixing groove, the fixing piece cooperates with the fixing groove, and then holds the flexible circuit board on the frame .

Description

technical field [0001] The invention relates to a backlight module and a liquid crystal display device using the backlight module. 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, it is necessary to provide a light source device for the liquid crystal display panel to realize the display function, such as a backlight module, whose function is to provide the liquid crystal display panel with sufficient and distributed brightness. Uniform flat light. [0003] Usually, a backlight module mainly includes a light source, a light source cover, a light guide plate, a flexible printed circuit (FPC), and other optical components. Each component of the backlight module needs a backlight module frame to fix it during assembly. . [0004] see figure 1 and figure 2 , figure 1 It is a three-dimensional exploded view of a prior art backlight module, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02F1/133
Inventor 张正芳张志清
Owner INNOCOM TECH (SHENZHEN) CO LTD
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