Patent ID: 7986012

Claim:
A semiconductor device, comprising: a semiconductor substrate; an insulating film formed over said semiconductor substrate; a first gate, including: a gate insulating film formed in a bottom surface in a first concave portion formed in said insulating film; a gate electrode formed over said gate insulating film in said first concave portion; and a protective insulating film formed over said gate electrode in said first concave portion; a source-drain region provided in the side of said first gate; and a contact formed in a second concave portion being formed in the side of said first concave portion in said insulating film and having a diameter that is larger than a diameter of said first concave portion in cross sectional view, and coupled to said source-drain region, wherein said gate electrode is composed of a film of first metal and a film of second metal coating a bottom surface and a side surface of said film of first metal.