Patent ID: 7502008

Claim:
A liquid crystal display device, comprising: a liquid crystal display panel including a pixel matrix for displaying a picture; a data driving circuit for applying video signals to the liquid crystal display panel; a static electricity proof circuit in the liquid crystal display panel and connected to a plurality of video lines receiving the video signals from the data driving circuit, for supplying the video lines with a pre-charge voltage in a pre-charge time interval while shutting off static electricity in the remaining time interval; and a plurality of demultiplexers in the liquid crystal display panel, for pre-charging the pre-charge voltage supplied via the video lines into data lines of the pixel matrix in the pre-charge time interval while making a time-divisional driving of the data lines to apply the video signals in a charge time interval of the video signals, wherein the data driving circuit floats the video lines in the pre-charge time interval, wherein a supplying time of the pre-charge voltage is synchronized with a floating time of the video lines.