Patent ID: 9130063
Filing Date: 2015-09-08
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate, on which a semiconductor region having a first conductivity type is locally formed on a surface of a semiconductor layer having a second conductivity type opposite to the first conductivity type; a main electrode, which is provided on a surface of the semiconductor substrate and which is connected to the semiconductor region and the semiconductor layer such that a pn-junction diode is formed with the semiconductor region and a Schottky barrier diode is formed with the semiconductor layer; a first electrode configured to ohmic-contact the semiconductor region; a second electrode configured to Schottky-contact the semiconductor layer and not having a portion directly contacting the first electrode; and a conductive reaction suppression layer configured to contact the first electrode and the second electrode and to suppress a reaction between a material configuring the first electrode and a material configuring the second electrode are provided on the surface of the semiconductor substrate, wherein the main electrode is electrically connected to the first electrode and the second electrode.