Patent ID: 6815734
Filing Date: 2004-11-09
Classification: H01L

Abstract:
A semiconductor device comprising:a semiconductor substrate; a thyristor having a body with an emitter region and an adjacent base region and having a control port, the emitter region being in the substrate and below the base region, the control port being adapted for capacitively coupling at least one edge of a voltage pulse to the base region; a shallower trench portion in the substrate and including at least a portion of the control port; a deeper trench portion having an upper region laterally adjacent to the shallower trench portion and having a lower region being arranged deeper into the substrate than the shallower trench portion and being arranged laterally to the emitter region; a pass device having first and second source/drain regions seperated by a channel region and a gate capacity coupled to the channel region, the pass device being electrically coupled to the emitter region; a shallow trench isolation (STI) region in the substrate and adapted to electrically insulate the pass device from adjacent circuitry; and a circuit structure in the semiconductor substrate and susceptible to reacting electrically in response to said at least one edge of a voltage pulse, wherein the STI region extends laterally in a first direction and wherein the circuit structure is located, relative to the emitter region, in a direction that is about parallel to the first direction.