Patent ID: 6284625
Filing Date: 2001-09-04
Classification: H01L,Y10S

Abstract:
A method for manufacturing a semiconductor device, comprising the steps of:forming a pad oxide film on a circuit forming surface of a semiconductor substrate;forming an oxidation inhibition film on said pad oxide film;forming grooves in said semiconductor substrate with said oxidation inhibition film as a mask, said grooves having upper ends at the surface of the semiconductor substrate;receding said pad oxide film from said upper ends of said grooves;after receding said pad oxide film, oxidizing each of said grooves formed on said semiconductor substrate in a range of 0<C.ltoreq.0.88t-924, in which oxidizing atmosphere is dry oxidation (H2/O2.apprxeq.0), an oxygen partial pressure in air corresponding to the oxygen partial pressure ratio is C %, and oxidizing temperature is t (.degree. C.), t being equal to or higher than 1050.degree. C.;burying an insulating film in said oxidized grooves;removing said oxidation inhibition film formed on the circuit forming surface of said semiconductor substrate; andremoving said pad oxide film formed on the circuit forming surface of said semiconductor substrate.