Liquid crystal display device and driving method thereof

Abstract

An LCD device improving picture-quality and a driving method thereof are disclosed. The LCD device and the driving method thereof generates analog normal driving gamma values and analog black data driving gamma values according to a driving mode selection signal which designates any one of a normal driving mode and a black data driving mode. Also, the LCD device and the driving method thereof provides RGB data voltages compensated with any one of the analog normal driving gamma values and the analog black data driving gamma values. In other words, the LCD device and the driving method thereof allow the normal driving gamma values to be used in the normal driving mode and the black data driving gamma values to be used in the black data driving mode. Therefore, brightness in the black data driving mode can maintains almost equally to that in the normal driving mode. As a result, the deterioration of picture-quality can be prevented.

Dependencies are inferred from the claim text.