Patent ID: 6414360
Filing Date: 2002-07-02
Classification: H01L

Abstract:
A P-channel, metal oxide semiconductor field effect transistor, comprising:a substrate comprised of silicon semiconductor material having a Pâˆ’ electrical conductivity; a well region formed in the silicon semiconductor substrate, the well region having an Nâˆ’ electrical conductivity; a drain region formed in the well region, the drain region having a P+ electrical conductivity; a source region formed in the well region, the source region having a P+ electrical conductivity; a channel region formed in the well region, the channel region being located between the drain region and the source region; a gate terminal disposed above the well region formed in the silicon semiconductor substrate in proximity to the channel region, the gate terminal being separated from the channel region by an insulating region; a first well tie region formed in the well region, the first well tie region having a P+ electrical conductivity and being separate from the source region; and a second well tie region formed in the well region, the second well tie region having an N+ electrical conductivity, wherein the first well tie region and the second well tie region being connected to separate control lines of an external switching circuit.