Patent ID: 6124618
Filing Date: 2000-09-26
Classification: H01L

Abstract:
A dynamic threshold voltage MOSFET constructed on a substrate having increased drain-to-source saturation current, comprising:a first diffusion-well of a material of a first conductivity type formed at the surface of the substrate to form a bulk region;a source region and a drain region of a material of a second conductivity type diffused into the diffusion-well;a first gate placed on a first oxide surface above the substrate between the source and drain regions;an accumulated base bipolar transistor having a base connected to the gate, an emitter connected to the diffusion-well, and a collector;a resistor connected between the emitter and a substrate biasing voltage source; anda biasing circuit connected to the collector of the accumulated base bipolar transistor to provide a bias voltage for said accumulated base bipolar transistor.