Patent ID: 7079102

Claim:
A driving method for an active matrix liquid crystal display apparatus including a plurality of gate lines, a plurality of source lines crossing the plurality of gate lines for carrying a source signal, a plurality of pixel electrodes at respective crossings of the gate lines and the source lines, wherein each of the pixel electrodes includes a switching element connected thereto, a liquid crystal capacitor and a storage capacitor, the liquid crystal display apparatus further including a counter electrode and a liquid crystal layer, the method comprising: setting potentials of the source signal, a terminal of the storage capacitor and the counter electrode such that a potential difference from the potential of a terminal of the storage capacitor to the potential of the counter electrode varies repeatedly; and determining an absolute value of a first voltage applied between the pixel electrode and the counter electrode when the potential difference is the same as that during writing of a charge to the pixel electrode, and determining an absolute value of a second voltage applied between the pixel electrode and the counter electrode when the potential difference is different from that during writing of a charge to the pixel electrode, such that an effective voltage is adapted to be applied to the liquid crystal capacitor during display of a moving image of a gray-scale level that is different from an effective voltage applied to the liquid crystal capacitor during display of the a still image of the same gray-scale level.