Patent ID: 6867079

Claim:
A method for manufacturing a semiconductor device having a bipolar transistor, a Schottky diode, and a resistance element formed in a first region, a second region, and a third region of a semiconductor substrate, respectively, said method comprising the steps of: (a) forming the bipolar transistor in the first region; (b) forming a first semiconductor layer of the Schottky diode in the second region; (c) forming an ohmic electrode of the Schottky diode, electrically connected to the first semiconductor layer, in the second region; (d) forming a first conductive film having a first portion and a second portion in the second and third regions, respectively; and (e) forming a first wiring and a second wiring electrically connected to the second portion of the first conductive film; wherein the first portion of the first conductive film and the first semiconductor layer of the Schottky diode have a Schottky contact; and the first and second portions of the first conductive film are a Schottky electrode of the Schottky diode and a resistance film of the resistance element, respectively.