Patent ID: 7443371

Claim:
An electro-optic apparatus, comprising: a plurality of scan lines; a plurality of data lines that intersect the scan lines; pixel electrodes disposed at respective intersections of the scan lines and the data lines; a counter electrode disposed opposite the pixel electrodes, the counter electrodes being set at a predetermined potential; electro-optic material disposed between the respective pixel electrodes and the respective counter electrodes, a memory to store logic corresponding to a tone of a data signal supplied from the data lines to the pixel electrodes in accordance with logic of a polarity signal; a power supply selecting device, the power supply selecting device switching between a first state in which a first potential and a second potential are supplied to the memory and a second state in which a third potential and a fourth potential are supplied to the memory, based on a switching of the logic of the polarity signal; and a reading device to switch a read of logic stored in the memory device based on the switching of the logic of the polarity signal, and supplying the pixel electrodes, the predetermined potential being lower than the first potential and the second potential and being higher than the third potential and the fourth potential.