Patent ID: 7247935

Claim:
A semiconductor device comprising: a first semiconductor chip with a first pad on a main face of said first semiconductor chip; a second semiconductor chip; said second semiconductor chip having a semiconductor substrate with a substrate front surface and a substrate rear surface; a multi-level interconnect layer provided on a front surface of said semiconductor substrate; a through electrode, which penetrates said semiconductor substrate completely from the substrate front surface to the substrate rear surface, being connected to a conductive component provided within said multi-level interconnect layer; and a second pad mounted on a top of said multi-level interconnect layer, wherein, said first semiconductor chip and said second semiconductor chip are flip-chip connected with each other via said first pad and said second pad, said second semiconductor chip further comprises a logic circuit and a multilayer converter circuit, the logic circuit and the plural interconnect layers occupy a first area of the substrate front surface, and the multilayer converter circuit occupies a second area, distinct from and coplanar with the first area, of the substrate front surface, the second area being in vertical registration with the through electrodes, and at least one layer of the multilayer converter circuit is connected to a corresponding interconnect layer, and at least one layer of the multilayer converter circuit is connected to ao corresponding through electrode.