Patent ID: 8058670

Claim:
A trench insulation gate bipolar transistor (IGBT) power device with a monolithic deep body clamp diode comprising a plurality of trench gates surrounded by emitter regions of a first conductivity type near a top surface of a semiconductor substrate of said first conductivity type encompassed in base regions of a second conductivity type, said trench semiconductor power device further comprising: a collector region of said second conductivity type disposed on a rear side opposite from said top surface of said semiconductor substrate corresponding to and underneath said trench gates surrounded by said emitter regions encompassed in said base regions constituting a plurality of insulation gate bipolar transistors (IGBTs); a deep dopant region of the second conductivity type having P-N junction depth deeper than said base regions, disposed between and extending below the trench gates in said semiconductor substrate of said first conductivity type; and a dopant region of said first conductivity type disposed on said rear side of said semiconductor substrate corresponding to and underneath said deep dopant region disposed between said trench gates thus constituting a plurality of deep body diodes; and an active cell area disposed substantially over a central portion of the semiconductor substrate and a termination area disposed near an edge of said semiconductor substrate wherein said termination area further comprising a plurality of said deep dopant regions of the second conductivity type.