Patent ID: 7075147

Claim:
A MOS-gated semiconductor power device comprising: a semiconductor body having a first major surface and a second opposing major surface; a base region of a first conductivity type formed in said semiconductor body below said first major surface; a first trench and a second trench formed in said semiconductor body, said first trench being spaced from said second trench by a first semiconductor region and a second semiconductor region, said first region being wider than said second region, and including access to said base region; a gate structure formed in each of said trenches; a conductive region of a second conductivity type formed adjacent each of said trenches; and an external contact in electrical contact with said conductive regions of said second conductivity type and said base region at said first region; wherein said trenches follow a serpentine path, wherein said trenches advance along a common direction of advancement, and wherein said serpentine path is comprised of smooth curves that together form a sinusoidal pattern.