Patent ID: 7214980

Claim:
A semiconductor device, comprising: a semiconductor substrate; at least two gate electrode sections formed adjacent to each other on a surface of the semiconductor substrate; a first diffusion region formed in a surface area of the semiconductor substrate, except in the gate electrode sections; a substrate contact layer formed between the gate electrode sections in self-alignment with the gate electrode sections; a first side-wall insulating film formed on one of side-wall portions of each of the gate electrode sections, the first side-wall insulating film including a first oxide film and a first insulating film; a second side-wall insulating film formed on other of the side-wall portions of each of the gate electrode sections, the second side-wall insulating film including the first oxide film and a second insulating film, the second insulating film being formed to extend to a portion above the substrate contact layer; and a second diffusion region whose conductivity type is opposite to that of the first diffusion region, formed in the surface area of the semiconductor substrate and corresponding to each of edges of the gate electrode sections, the edges corresponding to the other of the side-wall portions, wherein the second insulating film is formed along a side of the substrate contact layer.