Backlight module and liquid crystal display device

A liquid crystal display device and backlight module technology, which is applied to lighting devices, fixed lighting devices, components of lighting devices, etc., and can solve problems such as increasing the thickness of the backlight module, increasing the thickness of the frame, and unfavorable development of thinner display devices

Inactive Publication Date: 2014-01-15
XINCHENG TECH CHENGDU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The light guide plate and the frame of the backlight module are usually positioned by the cooperation between the protrusions on the light guide plate and the slots on the frame. If the groov...

Method used

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  • Backlight module and liquid crystal display device
  • Backlight module and liquid crystal display device
  • Backlight module and liquid crystal display device

Examples

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Embodiment Construction

[0036] see figure 1 , which is a schematic diagram of the first embodiment of the liquid crystal display device of the present invention. The liquid crystal display device 1 includes a top cover 10 , a liquid crystal panel 20 , and a backlight module 40 disposed adjacent to the liquid crystal panel 20 . The backlight module 40 includes an optical film set 420 , a light guide plate 430 , a light source 440 , a reflector 460 , a frame 450 and a back plate 480 . The upper cover 10 cooperates with the back plate 480 to accommodate the liquid crystal panel 20 and the backlight module 40 therein.

[0037] The light guide plate 430 includes a light emitting surface 431 , a bottom surface 432 opposite to the light emitting surface 431 , a plurality of side surfaces 434 connecting the light emitting surface 431 and the bottom surface 432 , and at least one notch 436 . The size of the bottom surface 432 of the light guide plate 430 is greater than the size of the light-emitting surfac...

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PUM

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Abstract

The invention relates to a backlight module and a liquid crystal display device with the backlight module. The backlight module comprises a light guide plate and a frame containing the light guide plate. The light guide plate is arranged in the frame and comprises a light emitting plane, a bottom face and a plurality of side faces, wherein the light emitting plane is opposite to the bottom face, and the side faces are intersected with the light emitting plane and the bottom face. The size of the bottom face is larger than that of the light emitting plane, so that the bottom face connected with at least one side face protrudes out of the light emitting plane connected with the side face, and a notch is defined in one side of the light emitting plane of the light guide plate. The notch extends in the length direction of the side face and penetrates through the side face. The frame comprises at least one protrusion, and the protrusion is matched with the notch to position the light guide plate.

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 LCD 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 LCD panel to realize the display function, such as a backlight module, whose function is to provide the LCD panel with sufficient brightness and uniform distribution. surface light source. [0003] Generally, a backlight module mainly includes a light source, a light guide plate and a frame. The light source is set relative to the light incident surface of the light guide plate. The light guide plate guides the transmission direction of the light beam emitted from the light source, and converts the light beam emitted by the line light source or point light source into a relatively uniform plane light to illuminate the liquid cr...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V17/10G02F1/13357F21Y101/02
Inventor 黄星童王俊渊
Owner XINCHENG TECH CHENGDU
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