Patent ID: 7345573
Filing Date: 2008-03-18
Classification: H01C,H01L

Abstract:
1. An integrated circuit structure including multiple thin film resistors having the same or different sheet resistances and the same or different TCRs (temperature coefficients of resistance), comprising: (a) a first oxide layer disposed on a semiconductor substrate having a circuit element therein; (b) a first thin film resistor disposed on the first oxide layer and a second oxide layer disposed over the first oxide layer and the first thin film resistor; (c) a second thin film resistor disposed on the second oxide layer and a third oxide layer disposed over the second thin film resistor and the second oxide layer; and (d) interconnect metallization elements disposed on at least one of the second and third oxide layers and contacting the circuit element, terminals of the first thin film resistor, and terminals of the second thin film resistor, respectively, through corresponding contact openings in at least one of the second and third oxide layers.