The high dynamic contrast central processing unit and treatment manner null of the

摘要

PROBLEM TO BE SOLVED: To suppress power consumption of a backlight by improving a problem on low contrast and flicker or the like of a liquid crystal display device.;SOLUTION: This invention relates to a high dynamic contrast processing device and a high dynamic contrast processing method for a liquid crystal display device. The processing device includes a receiver connected to a central processing module, an inverter and a source driver IC. The processing method includes: a step of performing histogram statistical processing to received low voltage difference signal data; a step of obtaining a backlight control coefficient and a gamma reference voltage parameter of the same frame screen based on a result of statistical processing; a step of controlling the luminance of the backlight based on the backlight control coefficient; and a step of controlling the voltage of a pixel capacitor in a liquid crystal panel based on the gamma reference voltage parameter. The invention improves dynamic contrast of a screen by simultaneously adjusting the luminance of the backlight and the voltage of the pixel capacitor of the liquid crystal panel.;COPYRIGHT: (C)2009,JPO&INPIT