Patent ID: 8928071
Filing Date: 2015-01-06
Classification: H01L

Abstract:
1. A semiconductor device including a MOSFET, comprising: a semiconductor substrate having a main surface and a back surface opposite to the main surface; the semiconductor substrate having a plurality of transistor cell regions, each of the plurality of transistor cell regions including: a source electrode of the MOSFET disposed over the main surface of the semiconductor substrate and being in contact with a top surface of the source region in each of the plurality of transistor cell regions; a drain electrode of the MOSFET disposed over the back surface of the semiconductor substrate and electrically connected to the semiconductor substrate; and a Schottky cell region disposed between the plurality of transistor cell regions in the semiconductor substrate; wherein the source electrode is in contact with a part of the main surface of the semiconductor substrate so as to form a Schottky junction in the Schottky cell region, and wherein the Schottky junction is lower than a portion of the main surface between the Schottky junction and one of the transistor cell regions.