An electro-optical device includes, above a substrate, a plurality of data lines and a plurality of scanning lines that cross each other, a plurality of pixel electrodes that are provided so as to correspond to intersections between the plurality of data lines and the plurality of scanning lines, and transistors, each of which is electrically connected to the pixel electrode and has an LDD structure. Further, each of the transistors has a semiconductor layer in which an impurity region is formed around a channel region, the impurity region having a heavily doped region and a lightly doped region whose impurity concentrations are different from each other, a first gate electrode that is formed on the channel region so as not to overlap the lightly doped region in plan view, and a second gate electrode that is electrically connected to the first gate electrode and that is formed on the first gate electrode so as to cover the lightly doped region in plan view.