Patent ID: 7458051

Claim:
A semiconductor structure comprising: a first conductive line for connecting to a power supply; a second conductive line for connecting to a complementary power supply; and at least one spare cell including one or more doped regions, the doped regions being coupled together by via contacts and conductive patterns so that the spare cell carries out certain predetermined functions, wherein the spare cell is unconnected from the first or second conductive line for being selectively connected to at least one normally functioning electronic component, the first conductive line and the second conductive line only during a rerouting process of the semiconductor structure for reducing leakage power, wherein the spare cell comprises one or more gate structures overlying the doped regions, wherein one or more active areas coupled between the doped regions and the first and second conductive lines for connecting the spare cell to the power supply and the complementary power supply via the first and second conductive lines during the rerouting process of the semiconductor structure.