Patent ID: 7316941

Claim:
A method of fabricating a thyristor-based semiconductor device comprising: forming alternating regions of opposite conductivity type in a layer of semiconductor material over an insulator and defining source, body, and drain regions for a MOSFET device and emitter and base regions for a thyristor device in series relationship; forming the alternating regions to define one of the source and the drain regions for the MOSFET in physical common relationship with the cathode/anode-emitter region to the thyristor; forming the drain/source region in common with the cathode/anode-emitter region by: implanting primary dopant with dosage sufficient to establish a concentration therefore in the emitter region of at least one order of magnitude greater than that of background dopant; and performing the implanting of the primary dopant for the emitter region to penetrate a full depth of the semiconductor material.