The first output buffer 22 of the driving LSI 20 outputs the first video signal voltage V and the second output buffer outputs the second video signal voltage *V with the opposite polarity from that of the first video signal voltage. The first and the second video signal voltages V, *V are fed to the drain driver 2 of the display panel 1 through a pair of signal wirings. The drain driver 2 supplies the first video signal voltage V to a pixel and the second video signal voltage with the opposite polarity to the pixel adjacent to the fist pixel through the drain line 5 and the TFT9. In this way, any pair of the adjacent pixels in horizontal and vertical direction receives the video signal voltages with opposite polarities from each other.