Patent ID: 7489008
Filing Date: 2009-02-10
Classification: H01L

Abstract:
1. A semiconductor device comprising: a layer of semiconductor material over an insulator; a source region, a body region and a drain region for a Metal-Oxide Semiconductor Field Effect Transistor (MOSFET) formed in the layer of semiconductor material; the drain region and the source region each comprising a conductivity of first-type; the body region comprising a conductivity of second-type, the second-type opposite to the first-type; a gate disposed over the body region and configured to be operable when under bias to form a conductive channel in a partial thickness of the body region between the drain region and the source region, a further thickness of the body region other than the partial thickness defining at least in part a floating body region of the body region; and another doped region of the conductivity of the second-type contacting the drain region, the drain region in contiguous and electrical series relationship between the body region and the another doped region; the body region, the drain region and the another doped region respectively configured to be operable collectively as an inherent bipolar device with a carrier transport gain sufficiently great to assist injection of carriers into the floating body region of the body region to impart an operable dynamic-kink effect to the MOSFET, yet sufficiently small to avoid inducing latching of the MOSFET with the another doped region when collectively in operation.