Patent ID: 6989812

Claim:
A liquid crystal display device for displaying an image by driving, based on an input image signal, a liquid crystal panel having a plurality of source lines supplied with a picture-element signal, a plurality of gate lines supplied with a scanning signal, and a plurality of picture-element cells arranged in a matrix on intersections of the source lines and the gate lines, the liquid crystal display device comprising: a source driver for supplying the picture-element signal to the source lines; a gate driver for supplying the scanning signal to the gate lines; driving control means for generating a polarity control signal for controlling a polarity of a voltage applied to each of the picture-element cells, and controlling the source driver by the polarity control signal; and a signal converting section for speeding up a transfer rate of the input image signal, and inserting a non-image signal in space of the input image signal, the non-image signal for applying a predetermined voltage to the picture-element cells, to supply the picture-element signal to the source driver, wherein the input image signal and the non-image signal of a positive polarity or a negative polarity are sequentially written in each of the picture-element cells, and for all of the picture element cells, after an input image signal is written, a non-image signal equal in polarity to the input image signal is always written, and further, after the non-image signal is written, an input image signal opposite in polarity to the non-image signal is always written.