Patent ID: 6025622
Filing Date: 2000-02-15
Classification: H01L

Abstract:
A conductivity-modulated field effect bipolar transistor, comprising:a first conductivity type region having a first surface;a first semiconductor region of a second conductivity type having a second surface and having a doping concentration less than that of said first conductivity type region;a base region of said first conductivity type formed in said second surface of said first semiconductor region;a source region of said second conductivity type formed in said base region;a polycrystalline gate electrode being opposite, through a gate insulating film, to said base region between said first semiconductor region and said source region;a source electrode connected to said source region and said base region;a drain electrode formed connected to said first surface of said first conductivity type region;a second semiconductor region of said first conductivity type connected to said base region between said first semiconductor region and said source region; anda metal film provided on and electrically connected to said polycrystalline gate electrode and provided over said second semiconductor region.