LCD device and driving method of its 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 reducing screen brightness, changing color temperature, affecting the display quality of liquid crystal display devices, and the user's viewing comfort of the screen. The effect of increasing cost, increasing visual comfort, and improving overall quality
CN100573650CInactive Publication Date: 2009-12-23AU OPTRONICS CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AU OPTRONICS CORP
Publication Date
2009-12-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a liquid crystal display device and a driving method of a backlight module thereof. The liquid crystal display device includes a display panel and a backlight module. The backlight module includes a first light source, a second light source and a driving circuit. When the liquid crystal display device is in the normal display mode, the driving circuit drives the first light source so that the backlight module provides the first backlight to the display panel. When the liquid crystal display device switches to the black insertion display mode, the driving circuit simultaneously drives the first light source and the second light source so that the backlight module provides mixed backlight to the display panel. The color temperature and brightness of the mixed backlight are different from the color temperature and brightness of the first backlight, so that the display color temperature and display brightness of the liquid crystal display device in the black insertion display mode are substantially equal to the display color temperature and display brightness of the liquid crystal display device in the normal display mode. Display brightness.
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Description

technical field

[0001] The invention relates to a liquid crystal display device and a driving method of a backlight module thereof. Background technique

[0002] With the advancement of flat panel display technology, thinner display devices, such as LCD TVs and LCD screens, have gradually entered people's daily life. Due to factors such as improved image quality and lower prices, more and more consumers choose liquid crystal displays as display devices for personal computers. In response to various demands from consumers, the industry has been striving to develop liquid crystal displays with wider viewing angles, wider color gamut and shorter response time.

[0003] Response time refers to the response speed of the liquid crystal display to the input signal, that is, the reaction time for the liquid crystal to turn from dark to bright, or from bright to dark. With the development of technology, the response time of LCDs has been gradually shortened from 20 milliseconds in ...

Claims

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