Patent ID: 8586437
Filing Date: 2013-11-19
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, the method comprising: providing a semiconductor substrate, the semiconductor substrate including: a first region where a FinFET (Fin Field Effect Transistor) is to be formed, and a second region where a PlanarFET (Planar Field Effect Transistor) is to be formed, wherein the first region includes: wherein the first insulating film, the second insulating film, and the first conducting film have a pattern of a first gate electrode of the FinFET, wherein the second region includes: wherein the first insulating film, the second insulating film, and the first conducting film have a pattern of a second gate electrode of the PlanarFET, wherein a thickness of the first insulating film in the second region is greater than a thickness thereof in the first region; forming first extension regions in the plurality of fins in the first region by a plasma doping method using the first gate electrode as a mask; forming second extension regions in the second region by one of an ion implantation method and a plasma doping method using the second gate electrode as a mask; forming first side walls and second side walls on side surfaces of the first gate electrode and on side surfaces of the second gate electrode, respectively; and forming a source and a drain of the FinFET in the first region by an ion implantation method using the first gate electrode and first side walls as masks and forming a source and a drain of the PlanarFET in the second region by an ion implantation method using the second gate electrode and second side walls as masks, at the same time.