Patent ID: 7803684
Filing Date: 2010-09-28
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor device the method comprising: forming a protrusion that extends from a substrate, the protrusion being formed with an upper portion, a lower portion, a channel region, and a recess that extends through the upper portion and into the lower portion; forming a selective epitaxial growth (SEG) layer that surrounds the upper portion of the protrusion and has at least one gap that exposes a sidewall of the channel region of the protrusion, the recess of the protrusion being aligned with the gap, wherein: a width of a first section of the upper portion of the protrusion is less than a width of a first section of the lower portion of the protrusion, the first section of the upper portion of the protrusion corresponding to the recess and being directly above the first section of the lower portion of the protrusion.