Patent ID: 7943459

Claim:
A semiconductor device comprising: a semiconductor substrate; at least one insulating film formed on the semiconductor substrate; a conductor wire and a fuse wire formed in the insulating film; a stopper insulating film on the insulating film; a first under-pad-wire insulating film formed on the stopper insulating film; a second under-pad-wire insulating film formed on the first under-pad-wire insulating film and comprising an element different from an element of the first under-pad-wire insulating film; a pad wire formed in an area above the conductor wire and in the first under-pad-wire insulating film and the second under-pad-wire insulating film; and an opening formed in a part of the first under-pad-wire insulating film and a part of the second under-pad-wire insulating film and exposing a top surface of the first under-pad-wire insulating film in an area above the fuse wire.