Patent ID: 6710383
Filing Date: 2004-03-23
Classification: H01L

Abstract:
A semiconductor device having a field effect transistor, said field effect transistor comprising a semiconductor substrate, source and drain regions formed in said semiconductor substrate, a gate insulating film on said semiconductor substrate, and a gate electrode disposed via said gate insulating film on said semiconductor substrate,said gate insulating film being an insulating film having a higher dielectric constant than that of a silicon dioxide film, the upper end portions in the gate length direction of said gate insulating film being positioned inwardly from the respective end portions of the gate electrode and inwardly from respective lower end portions of said gate insulating film, on the source side and on the drain side of said gate electrode, and said upper end portions of said gate insulating film being positioned in a region in which said gate electrode overlaps with a the source region and athe drain region in plan configuration.