Patent ID: 7751215
Filing Date: 2010-07-06
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor layer made of a first conductivity type wide band-gap semiconductor; a plurality of transistor cells in each of which one vertical field effect transistor is formed, the vertical field effect transistor causing a charge carrier to move in a thickness direction of said semiconductor layer; and a plurality of diode cells in each of which one Schottky diode is formed, the Schottky diode being formed such that a Schottky electrode forms a Schottky junction with said semiconductor layer, wherein: said semiconductor layer is divided into a plurality of square subregions based on virtual border lines in plan view, each of the square subregions including either one, but not both, of one of the plurality of transistor cells and one of the plurality of diode cells, source electrodes provided on a surface of said semiconductor layer of said transistor cells and Schottky electrodes provided on a surface of said semiconductor layer of said diode cells are electrically connected to each other, and a plurality of the vertical field effect transistors and a plurality of the Schottky diodes are integrated in a same chip and connected in parallel.