Patent ID: 8513763
Filing Date: 2013-08-20
Classification: H01L

Abstract:
1. A silicon carbide semiconductor device comprising: a silicon carbide semiconductor substrate of a first conductivity type; a plurality of recesses intermittently formed in a surface of said silicon carbide semiconductor substrate; semiconductor layers of a second conductivity type formed in said silicon carbide semiconductor substrate, in bottoms of said plurality of recesses; and a Schottky electrode selectively formed over said surface of said silicon carbide semiconductor substrate, said plurality of recesses all having an equal depth, wherein said plurality of recesses include one or more recesses not in contact with said Schottky electrode, wherein one or more of the one or more recesses not in contact with said Schottky electrode are alignment marks, and wherein said one or more recesses not in contact with said Schottky electrode are not covered by the Schottky electrode.