Patent ID: 8343834

Claim:
A method for the production of a semiconductor device with a charge compensation structure in a semiconductor body, the method comprising: providing a semiconductor wafer as a semiconductor substrate; applying epitaxial layers in epitaxial growth zones into which either no doping materials or doping materials in low concentration are introduced; applying first epitaxial growth zones to the semiconductor substrate wherein, following each first epitaxial growth zone, doping materials for a first conduction type are ion- implanted over the entire surface of the first epitaxial growth zones without using a mask and doping materials of a second, complementary conduction type are selectively implanted using an ion implantation mask; applying further epitaxial growth zones towards a front side wherein, following each epitaxial growth zone, doping materials for the second, complementary conduction type are ion-implanted over the entire surface without using a mask and doping materials of the first conduction type are selectively implanted using an ion implantation mask; and diffusing the doping materials for drift zones and charge compensation zones to produce column shaped vertical drift zones and charge compensation zones adjacent to one another, wherein the column shaped drift zones have smaller surface area than the drift zones of the first epitaxial growth zones.