Patent ID: 7221026

Claim:
A computer system, the computer system including: a circuit at ground potential; a circuit at V DD potential; a resistor electrically connect to the circuit at V DD potential; a transistor device having a gate and an active region proximate the gate; the active region comprising a pair of source/drain regions; one of the source/drain regions being electrically connected to the ground potential and the other of the source/drain regions being electrically connected to the resistor; an electrically insulative mass over the transistor device; an electrically conductive pillar extending upwardly from said other of the source/drain regions and through the insulative mass; and the resistor being over the insulative mass and in physical contact with the pillar; the resistor comprising a first crystalline layer and a second crystalline layer over the first crystalline layer; the second crystalline layer having a different composition than the first crystalline layer; the second crystalline layer comprising doped silicon/germanium and the first crystalline layer comprising doped silicon.