Patent ID: 8178399
Filing Date: 2012-05-15
Classification: H01L

Abstract:
1. A method of producing a semiconductor device, comprising the steps of: (a) forming a planar semiconductor layer on a substrate and then forming a pillar-shaped first-conductive-type semiconductor layer on the planar semiconductor layer; (b) forming a second-conductive-type semiconductor layer in a portion of the planar semiconductor layer underneath the pillar-shaped first-conductive-type semiconductor layer; (c) forming a dummy gate dielectric film and a dummy gate electrode around the pillar-shaped first-conductive-type semiconductor layer; (d) forming a second-conductive-type semiconductor layer in an upper portion of the pillar-shaped first-conductive-type semiconductor layer; (e) forming a metal-semiconductor compound on the second-conductive-type semiconductor layer in the portion of the planar semiconductor layer underneath the pillar-shaped first-conductive-type semiconductor layer; (f) forming a metal-semiconductor compound on the second-conductive-type semiconductor layer in the upper portion of the pillar-shaped first-conductive-type semiconductor layer; (g) removing the dummy gate dielectric film and the dummy gate electrode; (h) forming a high-k gate dielectric film and a metal gate electrode around the pillar-shaped first-conductive-type semiconductor layer; (i) forming a contact on the second-conductive-type semiconductor layer in the portion of the planar semiconductor layer underneath the pillar-shaped first-conductive-type semiconductor layer; forming a contact on the second-conductive-type semiconductor layer in the upper portion of the pillar-shaped first-conductive-type semiconductor layer; and (k) forming a contact on a metal gate line extending from the metal gate electrode.