Patent ID: 7432898

Claim:
An active matrix display device comprising: a pixel element; a pixel element electrode disposed for the pixel element; a plurality of sub-pixel element electrodes disposed for the pixel element electrode, each of the sub-pixel element electrodes having a different surface area, receiving an equal voltage according to an image signal in a moving picture display mode and receiving a respective bit signal of a digital image signal in a still picture display mode; and a plurality of retaining circuits disposed for the pixel element electrode, each of the retaining circuits corresponding to one of the sub-pixel element electrodes, retaining a voltage, and supplying the voltage to the corresponding sub-pixel element electrode, wherein the sub-pixel element electrodes are symmetrically disposed with respect to a first line of symmetry passing substantially through a center of the pixel element, with respect to a second line of symmetry passing substantially through the center of the pixel element, or with respect to both the first line and the second line, the first line and the second line being substantially orthogonal to each other.