To provide an electro-optical device which has the high degree of freedom with regard to changes in the area of a pixel region, and which can adjust brightness or a life span between light-emitting elements, easily control the white balance, and lengthen the life span of the overall display device. A top emission type of electro-optical device comprises first wiring lines, second wiring lines substantially orthogonal to the first wiring lines, and pixel regions selected by the first and second wiring lines. The electro-optical device has a plurality of pixel regions, and at least one of the pixel regions is provided so as to exceed a unit region surrounded by one of the first wiring lines and one of the second wiring lines, which select the at least one pixel region, and another of the first wiring lines and another of the second wiring lines respectively adjacent to one of the first wiring lines and one of the second wiring lines.