Patent ID: 7009590

Claim:
A display apparatus, comprising: electro-optical devices in respective areas partitioned by a plurality of first signal lines and a plurality of second signal lines intersecting with each other, each of the electro-optical devices being driven so as to carry out displaying in accordance with a signal level supplied via the second signal line while a first active device being selected via the corresponding first signal line; at least one second active device corresponding to the electro-optical device; at least one pixel memory, corresponding to the at least one second active device, for storing a signal level captured by the at least one second active device; electric potential keeping means for keeping a signal level captured by the first active device; and at least one bit selecting line for selectively driving the at least one second active device, wherein, while the first signal line is selected and a display signal level is set in the electric potential keeping means through the first active device, the at least one second active device is selectively driven so that the display signal level is also set in the at least one pixel memory, and the at least one second active device is selectively driven when the first signal lines is not selected, so that a display signal level of the electric potential keeping means is switched to the display signal level in the at least one pixel memory, and when time-division gradation display is carried out using an active organic EL, a bit appearing more than once in one frame is kept in an SRAM, while a bit appearing only once in one frame is kept in a capacitor, and when display period of weight is less than scanning time, the gap is filled as a data display period of the pixel memory, and time-division gradation driving is carried out.