Patent ID: 8921927

Claim:
A semiconductor device including a super junction structure, comprising: a semiconductor substrate; a drain region of a first conductivity type formed in the semiconductor substrate; a drift region of the first conductivity type formed over the drain region; a column region of a second conductivity type opposite to the first conductivity type formed in the drift region; a body region of the second conductivity type formed in the drift region and arranged over the column region; a source region of the first conductivity type formed in the body region; a gate insulating film formed over the drift region and the body region; a gate electrode formed over the gate insulating film; and a metal source electrode formed over the body region and electrically connected to the body region and the source region, wherein a first trench is formed in the column region and the drift region, wherein the body region is formed of an epitaxial layer and is embedded in the first trench, wherein an impurity region of the second conductivity type is formed in the body region and is arranged at a bottom of the metal source electrode, wherein a second trench is formed in the drift region, and wherein the column region is formed of an epitaxial layer and is embedded in the second trench.