Patent ID: 7679871

Claim:
A semiconductor device, comprising: a semiconductor substrate; a fuse which comprises a conductive material and is formed on said semiconductor substrate; a contacting target conductor region which is placed around said fuse on said semiconductor substrate and formed so as to make electrical contact with the fuse through the conductive material constituting the fuse when a process for cutting the fuse is carried out; and a determination unit which detects whether or not said fuse is electrically disconnected, as well as whether or not said contacting target conductor region and said fuse are electrically connected, and determines that said fuse is in a cut state when electrical disconnection of said fuse is detected or electrical connection between said contacting target conductor region and said fuse is detected, wherein said contacting target conductor region is formed of a cover member which covers said fuse from above, below and the sides so as to prevent the conductive material constituting the fuse from diffusing into the surroundings when said fuse is cut.