Patent ID: 7183591
Filing Date: 2007-02-27
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate; a thyristor body having a plurality of regions including opposite end regions and at least one body region in the substrate; a trench region in the substrate and laterally adjacent to said at least one thyristor body region in the substrate, the trench region including an insulative liner material and a conductive material in a portion of the trench region that is lined, the insulative liner material being arranged to electrically insulate the conductive material from said at least one body region in the substrate; and a conductive thyristor control port in the trench and configured and arranged for capacitively coupling at least one voltage transition to the at least one thyristor body region in the substrate, wherein the at least one thyristor body region in the substrate has a cross section adapted so that the capacitive coupling of at least one voltage transition from the control port results in an outflow of minority carriers from said one thyristor body region and switches the thyristor-based semiconductor device at least from a current-passing mode to a current-blocking mode for current flow between the opposite end regions of the thyristor body; wherein the conductive material is over the control port.