Patent ID: 7291899
Filing Date: 2007-11-06
Classification: H01L

Abstract:
1. A semiconductor component comprising: a semiconductor body having a first surface, a second surface, a third surface, a first conduction type region and a second conduction type region, wherein the first surface is defined by the top surface of the second conduction type region, the second surface is defined by the bottom surface of the first conduction type region, and the third surface is defined as a junction between the bottom surface of the second conduction type region and the top surface of the first conduction type region; a trench extending into the semiconductor body from the first surface through the third surface and into the first conduction type region, the trench defined by a trench bottom and a mostly arcuately shaped sidewall extending downward from the third surface to the trench bottom, wherein the trench bottom lies at least 20% further away from the first surface of the semiconductor body than the third surface lies away from the first surface of the semiconductor body.