Patent ID: 6787827
Filing Date: 2004-09-07
Classification: H01L

Abstract:
A semiconductor device comprising:a semiconductor substrate; a first insulating film selectively formed on a surface of said semiconductor substrate; a gate insulating film selectively formed on a surface portion of said semiconductor substrate where said first insulating film is not formed, said gate insulating film including a first gate insulating film and a second gate insulating film formed between said semiconductor substrate and said first gate insulating film; a gate electrode formed on said gate insulating film; and a second insulating film formed of the same material as the first gate insulating film and formed on a side wall of said gate electrode at the same time as said first gate insulating film; and a side wall insulating film which is formed on said second insulating film, wherein a total film thickness of said gate insulating film and said second insulating film is larger than a film thickness of said insulating film.