Liquid crystal display device and method of driving the same

摘要

An adjacent gradation correcting unit 11 performs processing for correcting gradations of sub-pixels to a video signal X2 after overshoot processing. When determining that a gradation of a target sub-pixel corresponds to a higher liquid crystal application voltage than that of a gradation of an adjacent sub-pixel, and that a gradation difference between the target sub-pixel and the adjacent sub-pixel is large, the adjacent gradation correcting unit 11 corrects the gradation of the adjacent sub-pixel so as to make the gradation difference smaller. In driving a liquid crystal panel 1, a video signal X3 after correction obtained by the adjacent gradation correcting unit 11 is used. With this, when displaying a specific color, such as red, green, or blue, it is possible to suppress a lateral electric field occurring between two sub-pixels that are adjacent to each other, and to improve response speed of the liquid crystal panel 1.

主权项

1. An active matrix-type liquid crystal display device, comprising:
a liquid crystal panel configured such that sub-pixels constituting color pixels are arranged two-dimensionally; an adjacent gradation correcting unit configured to correct gradations of the sub-pixels included in a video signal; and a drive circuit configured to drive the liquid crystal panel based on a video signal after correction obtained by the adjacent gradation correcting unit, wherein when the adjacent gradation correcting unit determines a gradation of a target sub-pixel corresponds to a liquid crystal application voltage is higher than for a gradation of an adjacent sub-pixel, and that a gradation difference between the target sub-pixel and the adjacent sub-pixel is large, the adjacent gradation correcting unit performs correction processing to the video signal for correcting the gradation of the adjacent sub-pixel so as to make the gradation difference smaller, each of the sub-pixels has a long side and a short side, and the adjacent gradation correcting unit performs the correction processing taking two sub-pixels disposed adjacent on the short side out of four sub-pixels disposed around the target sub-pixel as the adjacent sub-pixel.