Patent ID: 8901654
Filing Date: 2014-12-02
Classification: H01L

Abstract:
1. A semiconductor structure comprising: an insulator layer comprising a vertically protruding portion; a semiconductor channel portion having a uniform thickness, contacting a top surface of said vertically protruding portion, and laterally protruding outward from a periphery of said top surface of said vertically protruding portion; a gate stack including, from bottom to top, of a gate dielectric and a gate electrode and contacting a top surface of said semiconductor channel portion; a dielectric spacer having a bottom surface that is coplanar with an interface between said vertically protruding portion and said semiconductor channel portion; an epitaxial source region contacting a first concave sidewall of said vertically protruding portion and epitaxially in contact with said semiconductor channel portion; and an epitaxial drain region contacting a second concave sidewall of said vertically protruding portion and epitaxially in contact with said semiconductor channel portion.