To provide a wiring layout of electric power lines, which improves the aperture ratio of the pixel while forming pixels with the same pixel pitch. An electric-optical apparatus according to the present invention comprises multiple pixels (10) arranged in matrix including electro-optical devices driven by receiving electric power from an electric power supply circuit, wherein the aforementioned multiple pixels (10) make up multiple pixel groups formed of a series of pixels arrayed in at least one direction of the row direction and the column direction, and any of line forming regions (31, 32, 33, 34) is disposed between adjacent pixel groups of the aforementioned pixel groups, wherein the aforementioned line forming regions (31, 32, 33, 34) are formed with generally the same width.