Disclosed herein is an electro-optical device including a substrate for the electro-optical device connected with a flexible circuit board, wherein the flexible circuit board partially faces one surface of the substrate for the electro-optical device, is folded to face the other surface of the substrate for the electro-optical device at a position which does not overlap the substrate for the electro-optical device, and has a region extending to overlap the substrate for the electro-optical device, and wherein a reinforcement plate is interposed between the substrate for the electro-optical device and the folded flexible circuit board in a region in which at least the substrate for the electro-optical device and the flexible circuit board overlap each other.