Patent ID: 8294206
Filing Date: 2012-10-23
Classification: H01L

Abstract:
1. An integrated circuit device comprising: a vertical MOSFET with vertical charge compensation comprising: a semiconductor body with a first electrode and a second electrode located on opposite surfaces of the semiconductor body; a control electrode on an insulating layer, which controls channel regions of body zones in the semiconductor body for a current flow between the two electrodes; a vertical drift section having vertical drift zones adjoining the channel regions within a cell region; vertical charge compensation zones adjacent the vertical drift zones of the vertical drift section within a cell region; the vertical charge compensation zones having a first part electrically connected to the first electrode; the vertical charge compensation zones having a second part including nearly-floating charge compensation zones arranged below a polysilicon layer that forms an enlarged control electrode surface and is connected to a control electrode potential and provides a monolithically integrated additional capacitance G wherein the nearly-floating charge compensation zones are electrically connected to one another or to a body zone or to one of the conductively connected charge compensation zones by a layer of a second conduction type within the semiconductor.