There is provided an electro-optical circuit including: a substrate; a plurality of data lines and a plurality of scan lines disposed in a pixel region on the substrate to intersect each other; a plurality of pixel portions disposed at intersections of the data lines and the scan lines; a scan line driver circuit which applies scan signals through the scan lines to the pixel portions; an image signal apply circuit which applies image signals through the data lines to the a plurality of the pixel portions; and a plurality of power supply lines used to supply multiple-system powers to at least one of the scan line driver circuit and the image signal apply circuit.