Patent ID: 7214984
Filing Date: 2007-05-08
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; a silicon carbide layer formed on the semiconductor substrate and having its top surface inclined at an angle of 10 degrees or less from a crystal plane in a miscut direction; a gate insulating film formed on the silicon carbide layer; a gate electrode formed on the gate insulating film; a source electrode formed on a part of the silicon carbide layer located to a side of the gate electrode; a drain electrode formed on the back surface of the semiconductor substrate; and a source region formed in a region of the silicon carbide layer located at least under the source electrode, wherein the longest of the edges of the source region extends along the direction perpendicular to the miscut direction in a plan view, and the semiconductor device contains a V-group element at the interface between the silicon carbide layer and the gate insulting film.