High power mosfet semiconductor device

Details High power mosfet semiconductor device High power mosfet semiconductor device

H - Electricity

01

L

H01L 29/76 (2006.01) H01L 29/78 (2006.01)

Patent

CA 2441912

A high power MOSFET semiconductor having a high breakdown voltage. The new, power device concept that reaches an area of a lower specific on- resistance, higher breakdown voltage and reduced device silicon area. This device architecture is built on the concepts of charge compensation in the drift region of the device. Where, ,the doping of the vertical drift region is increased by one order of magnitude. To counterbalance the added charges, fine-structured wells of opposite doping type to the drift region are introduced as part of the device structure. The charge compensation wells do not contribute to the on-state current conduction, therefore, this novel new generation of high voltage device architecture breaks the limit line of silicon. This architecture may extend to higher material resistivity and larger geometry to increase the voltage to 1kv plus.

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