Patent ID: 6911967

Claim:
A liquid crystal display device, comprising: pixels equipped with a liquid crystal cell and a switch element, which are arranged at positions where scan lines and data lines intersect; a data line drive circuit for supplying from said data line and said switch element to said liquid crystal cell a write signal corresponding with image data; a control circuit for inverting a polarity of said write signal after every plurality of scan lines; and a scan line drive circuit for supplying a drive signal to said scan lines and switching said switch elements ON and OFF, wherein said scan line drive circuit, in the scan lines where the polarity of said write signal is inverted, supplies said drive signal for a period of time that is longer than one horizontal period by a fixed amount of time that is determined within a range of an invalid period, during which said invalid period said image data is not supplied, and in following scan lines to which is supplied a write signal of the same polarity as said scan line, supplies said drive signal for a period of time shorter than one horizontal period by said fixed amount of time.