Patent ID: 7074660
Filing Date: 2006-07-11
Classification: H01L

Abstract:
1. A method for fabricating fin field-effect transistors, comprising: providing at least one original fin made of a single crystalline semiconductor material on a substrate by means of a first lithography step, then providing a gate dielectric layer over longitudinal sides of the at least one original fin, then providing a gate electrode layer made of a conductive gate electrode material over the gate dielectric layer; forming contact trenches that pattern the at least one original fin in a longitudinal direction by means of a second lithography step, wherein at least one transistor fin with a first head end and a second head end at a distance of a fin length from the first head end emerges from the at least one original fin, and wherein a gate electrode associated with the transistor fin emerges from to gate electrode layer; and then processing the gate electrode, wherein the gate electrode recedes from both head ends; and forming a source/drain-region in each transistor fin from the respective two head ends respectively.