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Backlight module and liquid crystal display device comprising same

A technology of backlight module and light guide plate, applied in lighting devices, fixed lighting devices, optics, etc., can solve the problems of lowering product quality, increasing the probability of scratching the light guide plate, etc., and achieve the effect of improving product quality

Inactive Publication Date: 2013-12-25
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the assembly process of the backlight module, some tiny foreign objects will remain between the light guide plate and the reflector. During the movement or transportation of the backlight module, these foreign objects are likely to increase the probability of scratching the light guide plate, thereby reducing the product quality

Method used

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

Examples

Experimental program
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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing.

[0019] figure 1 The structure of the backlight module 10 according to the present invention is schematically shown. The backlight module 10 includes a light guide plate 11 and a reflection sheet 12 disposed under the light guide plate 11 . Generally, the reflective sheet 12 can be selected as a planar sheet. The backlight module 10 also includes a light source 13 and an optical film set 14 . The light source 13 is arranged at the light incident side of the light guide plate 11 and is used to provide light beams. Brightens the display area of ​​the device.

[0020] Such as figure 1 As shown, the light guide plate 11 has a light incident side 20 , a light exit surface 30 and a lower surface 40 . The light incident side 20 is disposed adjacent to the light source 13 . A plurality of dots 31 are arranged on the upper surface of the light guide plate 11, and these dots 31...

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PUM

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Abstract

The invention relates to a backlight module and a liquid crystal display device comprising the same. The backlight module comprises a light guide plate and a plane reflection piece arranged below the light guide plate. The position of the upper surface of the light guide plate is provided with a plurality of net points to enable the upper surface to form a light outlet surface, and the lower surface of the light guide plate is provided with a plurality of columnar protrusions contacted with the plane reflection piece. The backlight module can greatly reduce scratch probability of the light guide plate, and accordingly product quality is improved.

Description

technical field [0001] The invention relates to a liquid crystal device, in particular to a backlight module. The invention also relates to a liquid crystal display device using the backlight module. Background technique [0002] In a liquid crystal display, it is necessary to use a light guide plate to transmit light from a light source to illuminate the display area of ​​the liquid crystal display. The working principle of the light guide plate is as follows: light emitted by a light source (such as a light-emitting diode, ie, LED) is coupled into the light guide plate for propagation. When the light does not meet the dots on the light guide plate, the light can only undergo total internal reflection in the light guide plate and travel to the distance; when it encounters the dots, the internal total reflection characteristics of the light are destroyed under the action of the dots, prompting The light is scattered or reflected, and finally exported from the light-emittin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V8/00F21S8/00G02F1/13357F21Y101/02
CPCG02B6/0055G02F1/133615G02B6/0038G02B6/0073G02F1/1336
Inventor 贺虎
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD