Patent ID: 7659588
Filing Date: 2010-02-09
Classification: H01L

Abstract:
1. A power semiconductor device comprising: a semiconductor body of one conductivity; an active region formed in said semiconductor body; and a termination region having a transition region adjacent said active region that includes a plurality of columns of a conductivity different than said one conductivity formed in said semiconductor body, a cross-section of said plurality of columns taken normal to the longitudinal axes of said plurality of columns having a pattern in which a first group of said plurality of columns are disposed at corners of a hexagon and at the centroid of said hexagon, said first group forming a plurality of equilateral triangles with said column at said centroid at one corner thereof and two columns at the other corners thereof, and a second group of said plurality of columns wherein each of said columns of said second group being positioned equidistant from two of said plurality of columns in said first group, wherein columns of said plurality of columns have substantially analogous resistivity.