Patent ID: 8633572

Claim:
A semiconductor carrier structure comprising: a semiconductor substrate having a front surface and an opposing back surface, wherein the front surface is provided with an integrated circuit arrangement; a first connection extending between the front surface and the back surface, wherein the first connection comprises a through hole filled with a low ohmic material having a specific resistivity lower than poly silicon, surrounds a portion of the semiconductor substrate, and is electrically coupled to at least one node of the integrated circuit arrangement without penetrating the integrated circuit arrangement; a second connection extending between the front surface and the back surface, wherein the first connection and the second connection are spatially separated from each other by at least a portion of the semiconductor substrate, the second connection is made of doped poly silicon and is a self-contained structure that surrounds the first connection; a solder ball at the back surface; a first contact element between the first connection and the solder ball, wherein the first contact element includes AlSiTi; and a second contract element between the first connection and the solder ball, wherein the second contact element includes NiAu.