Semiconductor having diffusion region separated from the gap electrode and wiring layer

摘要

A method of manufacturing a semiconductor device includes the steps of: forming a gate electrode and a wiring layer on a silicon oxide film formed on the surface of a semiconductor substrate, by using conductive material; forming a diffusion region on the surface of the semiconductor substrate by implanting impurities into the semiconductor substrate at an area other than the gate electrode and the wiring layer; and forming a film for electrically interconnecting the diffusion region and the wiring layer, using conductive material.