Patent ID: 6340836
Filing Date: 2002-01-22
Classification: H01L

Abstract:
A semiconductor device for rectifying comprising:a semiconductor substrate of a first conductivity type with a high impurity concentration; a semiconductor layer of said first conductivity type with a low impurity concentration formed by epitaxial growth on said semiconductor substrate; a plurality of semiconductor regions of a second conductivity type formed in a surface side of said semiconductor layer; and a metal layer formed on a surface of said semiconductor layer and on a surface of said semiconductor regions, said metal layer forming a Schottky barrier with said semiconductor layer; wherein said semiconductor regions are formed to be regularly arranged in such a manner that a plan configuration of each of said semiconductor regions on a surface of said semiconductor layer is a circularity or a polygon, and that at least one of said plurality of semiconductor regions contacts or overlaps with at least one other said plurality of semiconductor regions.