Patent ID: 9349854
Filing Date: 2016-05-24
CPC Classification: H01L

Claim Text:
1. A semiconductor device, comprising: a vertical IGFET in a first area of a semiconductor body, the vertical IGFET having a drift zone between a body zone and a drain electrode, the drift zone having a vertical dopant profile of a first conductivity type being a superposition of a first dopant profile declining with increasing distance from the drain electrode and dominating the vertical dopant profile in a first zone next to the drain electrode and a second dopant profile being a broadened peak dopant profile and dominating the vertical dopant profile in a second zone next to the body zone; and a further semiconductor component formed in a second area of the semiconductor body, wherein the second dopant profile of the drift zone is absent in the second area, wherein the vertical dopant profile of the drift zone has a local dopant maximum in the second zone and the local dopant maximum is located below gate trenches of the vertical IGFET.