Patent ID: 9508853
Filing Date: 2016-11-29
CPC Classification: H01L

Claim Text:
1. A method of forming a FinFET device with a channel region, the method comprising: forming an initial fin in a semiconductor substrate; forming a sacrificial gate structure around a portion of said initial fin; forming a sidewall spacer adjacent opposite sides of said sacrificial gate structure; removing said sacrificial gate structure so as to thereby define a replacement gate cavity that is laterally defined by said sidewall spacers, wherein formation of said replacement gate cavity exposes a portion of said initial fin within said replacement gate cavity; performing an etching process through said replacement gate cavity to remove portions of said initial fin so as to thereby define a reduced size fin and recesses under said sidewall spacers; forming at least one replacement epi semiconductor cladding material around said reduced size fin in said replacement gate cavity and in said recesses under said sidewall spacers; and forming a replacement gate structure within said replacement gate cavity around said at least one replacement epi semiconductor cladding material.