Patent ID: 9006746
Filing Date: 2015-04-14
Classification: H01L

Abstract:
1. A Schottky barrier diode, comprising: an n− type epitaxial layer disposed on a first surface of an n+ type silicon carbide substrate; a plurality of p+ regions disposed within the n− type epitaxial layer; an n+ type epitaxial layer disposed on the n− type epitaxial layer; a Schottky electrode disposed on the n+ type epitaxial layer, and an ohmic electrode disposed on a second surface of the n+ type silicon carbide substrate, wherein the n+ type epitaxial layer includes a plurality of pillar parts disposed on the n− type epitaxial layer and a plurality of openings disposed between the pillar parts, wherein the plurality of openings expose the p+ regions, and wherein each of the pillar parts includes substantially straight line parts that contact the n− type epitaxial layer and substantially curved line parts that extend from the substantially straight line parts.