Patent ID: 7705401
Filing Date: 2010-04-27
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising: forming a dielectric film pattern having a specific thickness on silicon semiconductor substrate; selectively etching said silicon semiconductor substrate by using said dielectric film pattern as an etching mask to form a trench; depositing an isolation film within said trench; selectively etching said dielectric film pattern to form a pair of openings exposing therethrough a portion of said silicon semiconductor substrate; selectively growing a silicon semiconductor layer on said portion of said semiconductor substrate; removing said dielectric film pattern having said pair of openings; etching a top portion of said isolation film; forming a gate insulation film on a surface portion of said silicon substrate and at least a portion of said selectively grown semiconductor layer; and forming a gate electrode opposing said surface portion of said silicon semiconductor substrate and said selectively grown semiconductor layer with an intervention of said gate insulation film.