Patent ID: 9362371
Filing Date: 2016-06-07
CPC Classification: H01L

Claim Text:
1. A method for producing a controllable semiconductor component, the method comprising: providing a semiconductor body with a top side and a bottom side; forming a first trench protruding from the top side into the semiconductor body and a second trench protruding from the top side into the semiconductor body, the first trench comprising a first width and a first depth, and the second trench comprising a second width greater than the first width and a second depth greater than the first depth; forming, in a common process, an oxide layer in the first trench and in the second trench such that the oxide layer fills the first trench and electrically insulates a surface of the second trench; and removing the oxide layer from the first trench completely or at least partly such that the semiconductor body comprises an exposed first surface area arranged in the first trench, wherein the second trench is not completely filled with the oxide layer in the common process of forming the oxide layer in the first trench and in the second trench, and wherein a first electrode is formed on the top side, the first electrode electrically connected to the exposed first surface area.