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Backlight module used in liquid crystal display device and control method of backlight module

A liquid crystal display device and backlight module technology, which is applied in optics, nonlinear optics, static indicators, etc., can solve the problems of short service life of LCD TV displays, avoid accelerated aging, improve service life, and reduce color cast. Effect

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

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a backlight module capable of prolonging the service life of a liquid crystal display device and its control method in view of the short service life of liquid crystal television display screens in the prior art.

Method used

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  • Backlight module used in liquid crystal display device and control method of backlight module
  • Backlight module used in liquid crystal display device and control method of backlight module

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Embodiment Construction

[0031] The backlight module of the liquid crystal display device provided by the invention is suitable for the liquid crystal display. The present invention adds multiple light sources to the backlight source, and then allocates the use of the light sources through the controller, so that different light sources can be called each time the backlight module is turned on to reduce the frequency of use of each light source, thereby improving the efficiency of the light source. service life, thereby increasing the service life of the backlight module and further improving the service life of the liquid crystal display device.

[0032] refer to figure 1 , the backlight module provided by the present invention includes a light emitting unit 10 and a power supply 20 for providing electric energy to the light emitting unit 10 . The light emitting unit 10 includes a plurality of light sources 110 arranged in parallel, a plurality of switches 30 connected between the plurality of light...

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Abstract

The invention discloses a backlight module used in a liquid crystal display device and a control method of the backlight module. The backlight module comprises a light emitting unit and a power supply used for supplying power for the light emitting unit. The light emitting unit comprises a plurality of light sources connected in parallel, a plurality of switches corresponding to the light sources and a controller used for controlling the on-off state of each switch. Each light source is electrically connected with the power supply through one corresponding switch, and the switches are electrically connected with the controller. When the backlight module is started, the controller chooses to connect one of the switches in the following steps so as to turn on the light source corresponding to the connected switch. By means of the backlight module and the control method of the backlight module, service life of the backlight module can be prolonged.

Description

technical field [0001] The invention relates to the field of a backlight module of a liquid crystal display device, in particular to a backlight module and a control method thereof for improving the service life of a liquid crystal display device. Background technique [0002] At present, LCD TVs have entered thousands of households, and are deeply loved by users because of their lightness, thinness, and bright colors. However, the lifespan of the display screen of an LCD TV is still an important factor determining the quality of an LCD TV. How to prolong the lifespan of a LCD TV screen is a major problem for TV manufacturers today. There are two main factors affecting the life of the display screen, one is the aging speed of the display screen; the other is the life of the backlight tube. The life-span of the backlight lamp tube of existing LCD TV is about 50,000 hours. However, after 6 to 7 years of use in general TV sets, the problem of color cast occurs due to the agin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34G02F1/13357
CPCH05B45/46H05B45/58
Inventor 齐明虎吴俊豪林昆贤汪永强舒志优杨卫兵陈增宏杨国坤李晨阳子蒋运芍
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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