Invention Grant
US08163605B2 Production method for semiconductor device 有权
半导体器件的制造方法

Production method for semiconductor device
Abstract:
It is intended to provide an SGT production method capable of obtaining a structure for reducing a resistance of a source, drain and gate, a desired gate length, desired source and drain configurations and a desired diameter of a pillar-shaped semiconductor to be obtained. The method comprises the steps of: forming a pillar-shaped first-conductive-type semiconductor layer; forming a second-conductive-type semiconductor layer underneath the pillar-shaped first-conductive-type semiconductor layer; forming a dummy gate dielectric film and a dummy gate electrode around the pillar-shaped first-conductive-type semiconductor layer; forming a first dielectric film on an upper region of a sidewall of the pillar-shaped first-conductive-type semiconductor layer and in contact with a top of the gate electrode, through a gate dielectric film; forming a first dielectric film on a sidewall of the gate electrode; forming a second-conductive-type semiconductor layer in an upper portion of the pillar-shaped first-conductive-type semiconductor layer; forming a second-conductive-type semiconductor layer in an upper portion of the pillar-shaped first-conductive-type semiconductor layer; forming a metal-semiconductor compound on each of the second-conductive-type semiconductor layers formed in the upper portion of and underneath the pillar-shaped first-conductive-type semiconductor layer; removing the dummy gate dielectric film and the dummy gate electrode and forming a high-k gate dielectric film and a metal gate electrode.
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