Patent ID: 6362505
Filing Date: 2002-03-26
Classification: H01L

Abstract:
A MOS field-effect transistor, comprising:a semiconductor body of a first conductivity type having a first and a second main surface, at least one first semiconductor zone of a second conductivity type opposite to the first conductivity type embedded in the semiconductor body at the first main surface; at least one second semiconductor zone of the first conductivity type provided in the at least one first semiconductor zone; at least one gate electrode in a region above the at least one first semiconductor zone between the at least one second semiconductor zone and the semiconductor body; and a first electrode in contact with the semiconductor body on the second main surface and a second electrode in contact with the at least one second semiconductor zone, wherein at least one auxiliary electrode provided with an insulating layer is provided in the semiconductor body, the at least one auxiliary electrode extending in a direction between the first and the second main surfaces of the semiconductor body and being electrically connected to the at least one first semiconductor zone.