An electro-optical device has a first selecting circuit for selecting, in order, each unit circuit, and a signal line, for supplying to a corrected data for each unit circuit. Each unit circuit includes: an electrooptical element having a greyscale corresponding to a drive current; a memory element for fetching and storing a corrected data from the signal line when the first selecting circuit selects the unit circuit; a current source transistor for producing a reference currrent of the current value corresponding to the corrected data stored in the memory element; and a drive transistor for producing a drive current by adjusting the reference current into the current value corresponding to the greyscale data.