Patent ID: 7378718

Claim:
A semiconductor device, comprising: a first insulating film formed on a semiconductor substrate; a second insulating film formed on a region of the semiconductor substrate which is adjacent to the first insulating film, and being thinner than the first insulating film; a fuse element extending on the first insulating film and the second insulating film, and having a first region which serves as a fuse portion, a second region connected to one side of the first region, and a third region connected to another side of the first region; a first interlayer insulating film formed on the fuse element; at least one first contact plug extending through the first interlayer insulating film to the second region of the fuse element; at least one second contact plug extending through the interlayer insulating film to the third region of the fuse element; a first wiring formed on the first interlayer insulating film and connected to the at least one first contact plug; a second wiring formed on the first interlayer insulating film and connected to the at least one second contact plug; and wherein a pattern width of the first region is narrower than a pattern width of the second region and the third region, a pattern width of the second region is substantially equal to a pattern width of the third region, and the entire second region is formed on the first insulating film, and at least a part of the third region is formed on the second insulating film.