Patent ID: 7633120

Claim:
An inverted field-effect-transistor (iT-FET) semiconductor device comprising a source disposed on a bottom and a drain disposed on a top of a semiconductor substrate further comprising: a vertical current conducting channel between said source and said drain controlled by a vertical sidewall gate disposed on sidewalls of a trench and padded by a gate oxide layer attached to said sidewalls of said trench; a source-body short structure extending downwardly from a bottom surface of said trench for electrically shorting a body region in said substrate to a source region disposed on under a bottom of said trench; a doped body region disposed in said substrate and surrounding a lower portion of said trench encompassing said source region forming a channel region along sidewalls of said trench; a drift region disposed near said top surface of said substrate surrounding an upper portion of said trench and encompassing said drain; and a linker regions disposed below said drift region and extending downwardly to said doped channel region for linking said drift region and said doped channel region.