Patent ID: 7029989
Filing Date: 2006-04-18
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising the steps of: (a) forming a pad nitride film on a semiconductor substrate; (b) etching a portion of the pad nitride film and the semiconductor substrate to form a trench; (c) depositing a first insulating film on the entire structure so that the trench is buried; (d) polishing the first insulating film so that the pad nitride film is exposed; (e) wet etching the first insulating film so that the semiconductor substrate at both sidewalls of the trench is exposed; (f) performing a SEG process at the condition that the pad nitride film is formed on the semiconductor substrate for only the semiconductor substrate exposed at both sidewalls of the trench to form a silicon growth layer on each sidewall; (g) forming a second insulating film on the first insulating film so that the trench is buried; and (h) removing the pad nitride film.