Patent ID: 7362321

Claim:
A method of driving an image display, comprising the steps of: applying a scan line voltage to scan lines so as to switch, between on state and off state, pixel switching elements connected to pixel electrodes each provided for a different pixel on a substrate, applying a signal line voltage to signal lines connected to the pixel electrodes through the pixel switching elements when the pixel switching elements are in the on state, applying a common voltage to a common electrode sandwiching the pixels between the same and the pixel electrodes, and while AC driving the pixels, adjusting a pulse width of the signal line voltage for the AC driving when the pixel switching elements are in the on state, so as to control display tones; and causing the scan line voltage and the signal line voltage to differ from each other equally during a specified period of positive polarity pixel writing when the pixel switching elements are in the on-state and during a corresponding period of negative polarity pixel writing when the pixel switching elements are in the on-state.