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Backlight module and liquid crystal display device

A backlight module and backlight technology, applied in lighting devices, fixed lighting devices, components of lighting devices, etc., can solve the problems of low efficiency, light leakage and light efficiency, and achieve the effects of reducing current, avoiding light leakage, and improving utilization

Active Publication Date: 2013-10-09
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the present invention proposes a backlight module, which can make the light emitted by the light source lamp completely enter the light guide plate, avoiding the problems of light leakage and low light efficiency

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

[0022] The present invention will be further described below in conjunction with accompanying drawing.

[0023] figure 2 The structure of the backlight module 20 according to the present invention is schematically shown. The backlight module 20 includes a backlight 40 and a light guide plate 27 disposed directly in front of the backlight 40 . The backlight 40 includes a board body 21 on which the light source lamp 23 is installed, and reflectors 24 and 25 arranged at two longitudinal edges of the board body 21 . The reflectors 24 and 25 can prevent scattered light from emitting from the gap between the plate body 21 and the light guide plate 27 to cause light leakage. In addition, part of the scattered light can be reflected, which will greatly improve the light efficiency. Therefore, the liquid crystal display device using the backlight module 20 will also reduce power consumption and realize energy saving while maintaining brightness.

[0024] image 3 The structure of ...

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Abstract

The invention relates to a backlight module and a liquid crystal display device. The backlight module comprises a backlight source. The backlight source comprises a plate body where a light source lamp is arranged and at least one light reflection plate arranged at the longitudinal edge of the plate body. The cross section of the light reflection plate is in a right trapezoid, the upper base of the right trapezoid can serve as the inner lateral side of the light reflection plate, the lower base of the right trapezoid can serve as the outer lateral side of the light reflection plate, the right-angle edge of the right trapezoid can serve as a contact face between the light reflection plate and the plate body, and the oblique edge of the right trapezoid can serve as a light reflection oblique plane of the light reflection plate. The backlight module can end light emitted by the light source lamp to completely enter the light guide plate so as to solve the problems of light leakage and low light efficiency.

Description

technical field [0001] The invention relates to a liquid crystal display component, in particular to a backlight module. The invention also relates to a liquid crystal display device using the backlight module. Background technique [0002] Thin film transistor displays (ie, TFT-LCDs) are one of the main types of current flat panel displays, which are widely used in electronic devices. Since the liquid crystal itself does not emit light, a backlight module must be configured for display. figure 1 It schematically shows the structure of a thin film transistor display in the prior art. The edge-lit backlight module 100 emits light, which is transmitted to the display area through the light guide plate 102 for display. [0003] The backlight module 100 includes a light-emitting diode (ie, LED) light bar 104 installed in the aluminum extrusion 103. During use, the scattered light irradiated by the light bar 104 into the gap between the aluminum extrusion 103 and the light guid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V13/02F21V19/00G02F1/13357
CPCG02B6/0031G02B6/0085
Inventor 黄笑宇
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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