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Backlight module and liquid crystal display device

A technology of backlight module and light source, which is applied in the direction of lighting devices, fixed lighting devices, components of lighting devices, etc., can solve the problems of low coupling efficiency, improve coupling efficiency, and solve the effect of low coupling efficiency

Inactive Publication Date: 2012-08-01
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a backlight module and a liquid crystal display device, which has a reflective element including a reflective curved surface and a reflective plane, the reflective element improves the light coupling efficiency of the backlight module, and solves the problem of the light coupling efficiency of the existing backlight module and the liquid crystal display device lower technical issues

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

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Embodiment Construction

[0024] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0025] In the figures, structurally similar units are denoted by the same reference numerals.

[0026] Please refer to figure 2 , figure 2 It is a structural schematic diagram of the first preferred embodiment of the backlight module of the present invention, wherein the backlight module includes a light guide plate 201, a base 204, a light source 202, a reflective element 203, a reflective sheet 205, a back plate 206, and a light source reflective ...

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PUM

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Abstract

The invention relates to a backlight module and a liquid crystal display device. The backlight module comprises a light guide plate, a pedestal arranged on one side of the light guide plate, a light source arranged on the pedestal and a reflecting element for reflecting light emitted by the light source to the incident light surface of the light guide plate, wherein the reflecting element comprises a first reflecting plane, a reflecting curved surface and a second reflecting plane which are connected in proper order; a ratio of a height of the first reflecting plane to that of the reflecting curved surface is 0.9 to 1.1, and the ratio of the height of the reflecting curved surface to that of the second reflecting plane is 9 to 11. The backlight module and the liquid crystal display device have high light coupling efficiency.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a backlight module and a liquid crystal display device capable of improving light coupling efficiency. Background technique [0002] Liquid Crystal Displays (LCDs) have been widely used in various electronic products. Most of the LCDs are backlight LCDs, which include a liquid crystal panel and a backlight module. The backlight module can be divided into two types according to the incident position of the light source: a side-light type backlight module and a direct-light type backlight module. [0003] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of a conventional side-light incident backlight module. The backlight module includes a light guide plate 101 , a light source 102 , a reflective element 103 , a base 104 , a reflective sheet 105 , a back plate 106 and a light source reflective sheet 107 , and the reflective element 103 is usually an ...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V13/04G02F1/13357
CPCG02B6/0013G02B6/4214G02B5/126G02B6/0031G02F1/133553G02F1/1336
Inventor 黄建发
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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