Patent ID: 6819317
Filing Date: 2004-11-16
Classification: G09G

Abstract:
A liquid crystal display comprising:(1) a switching element connected to a display data retention circuit, a common electrode, and a display electrode, for controlling a connection between the common electrode and the display electrode according to a voltage retained in the display data retention circuit; and (2) an opposite electrode installed opposite to the display electrode, having applied thereto an AC voltage vibrating in response to a voltage of the common electrode; wherein a liquid crystal is held between the display electrode and the opposite electrode; wherein display is performed based on the fact that an AC voltage is applied to the opposite electrode to drive the liquid crystal when the switching element establishes a connection between the display electrode and the common electrode, and the AC voltage is not applied to the opposite electrode when the switching element releases the connection between the display electrode and the common electrode; and wherein the switching element changes from connection between the display electrode and the common electrode to release of the connection under a condition that the AC voltage applied to the opposite electrode is stopped, and respective voltages of the opposite electrode, the display electrode, and the common electrode are made substantially the same.