Semiconductor device having a potential fuse, and method of manufacturing the same

摘要

In a semiconductor device, an active region is formed in a semiconductor substrate separated by a plurality of isolation regions. A plurality of surface insulating films of different thickness are formed separately on the active region. A plurality of conductive films are formed on the respective insulating films. Then, one of the surface insulating film having smaller thickness is caused to break down to work as an electric fuse.