Patent ID: 8476702
Filing Date: 2013-07-02
Classification: H01L

Abstract:
1. A semiconductor device, comprising: an N an N-type epitaxial layer made of silicon formed on the top side of the substrate; a P-type body region formed on the epitaxial layer, the body region having trenches that extend from a top side of the body region to the epitaxial layer; gate insulating films, each of the gate insulating films covering the surface of a respective one of the trenches to form an insulating trough; a plurality of gate electrodes made of polysilicon doped with a high concentration of an N-type impurity, each of the gate electrodes completely filling a respective one of the insulating troughs with the gate electrodes coming up to the top of the troughs; N P a drain electrode on the bottom side of the substrate, wherein the body contact regions are disposed in a plurality of columns that extend at a fixed pitch in a column Y direction when seen in a plan view, wherein, in a pair of columns that are adjacent one another in a row direction X that is orthogonal to the column direction Y, the body contact regions forming one of the columns and the body contact regions forming the other of the columns are in a positional relationship of being shifted in the column Y direction by half of the fixed pitch, wherein the trenches extend in the column Y direction, with each column of body contact regions having trenches disposed at both sides thereof, wherein the trenches are disposed in meandering lines having curved portions, with gaps having a fixed gap width D existing in the row direction X between adjacent trenches and between the trenches and the body contact regions, and wherein the body contact regions are substantially square in shape, with sides parallel to the row direction X or the column direction Y, when seen in a plan view.