Patent ID: 7217965

Claim:
A semiconductor device including fuse elements electrically opened by irradiation with laser light that melts and thereby cuts the fuse elements, the semiconductor device comprising: a semiconductor substrate; a first insulating film supported by said semiconductor substrate; fuse elements comprising respective portions of an aluminum layer disposed on said first insulating film; a bonding pad comprising a portion of said aluminum layer disposed on said first insulating film; a second insulating film covering said fuse elements, said first insulating film between said fuse elements, and part of said bonding pad, said second insulating film having a first hole through which at least part of said bonding pad is exposed; and a third insulating film covering said second insulating film and having a second hole through which at least part of said bonding pad is exposed, wherein said third insulating film has planar portions between said fuse elements and ridged portions opposite said fuse elements, and each of said fuse elements is thinner than the total thickness of said planar portions of said third insulating film and said second insulating film at locations between said fuse elements.