Patent ID: 7268079

Claim:
A method for fabricating a semiconductor having at least one field zone comprising: providing a semiconductor body having an inner region, an edge region adjoining the inner region in a lateral direction of the semiconductor body, and a first side, the semiconductor body comprising a first semiconductor zone of a first conduction type in the inner region and at least one second semiconductor zone of the first conduction type in the edge region, the at least one second semiconductor zone having a dimension in a vertical direction of the semiconductor body and extending into the semiconductor body proceeding from the first side; and patterned etching of the semiconductor body proceeding from the first side as far as a predetermined etching depth at least in the edge region in order to partially remove and reduce the dimension of the at least one second semiconductor zone in the vertical direction of the semiconductor body, wherein the at least one second semiconductor zone forms a field zone in the edge region of the semiconductor body.