LCD device and driving method of its backlight module

Abstract

The invention discloses an LCD device and a driving method of a backlight module thereof. The LCD device comprises a display panel and the backlight module, wherein, the backlight module comprises a first light source, a second light source and a drive circuit. When the LCD device is in a normal display mode, the drive circuit drives the first light source to make the backlight module to provide a first backlight to the display panel. When the LCD device is converted into a black frame insertion display mode, the drive circuit drives the first light source and the second drive circuit at the same time to make the backlight module to provide a mixed backlight to the display panel. The color temperature and lightness of the mixed backlight are different from the color temperature and the brightness of the first backlight, so that the displayed color temperature and displayed brightness of the LCD device under the black frame insertion display mode is essentially the same as the displayed color temperature and displayed brightness of the LCD under the normal display mode.

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 ...

AI Technical Summary

Problems solved by technology

However, using the black insertion technology that inserts low gray scale or full black screen will reduce the brightness of the screen display, and the deviation of gray scale will lead to the change of color temperature

When the liquid crystal display device is switched from the general display mode to the display mode using the black insertion technology, or when switching from the display mode using the black insertion technology to the general display mode, the user will obviously feel the change of the screen brightness and color temperature, so Will greatly affect the display quality of the liquid crystal display device and the comfort of the user watching the screen

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