Patent ID: 6069055
Filing Date: 2000-05-30
Classification: H01L

Abstract:
A fabricating method for semiconductor devices comprising the steps of:depositing a film on a silicon substrate;patterning said film;forming an isolation trench in said silicon substrate with masking of said patterned film; andgrowing a silicon oxide film that is generated by reaction of ozone and tetra-ethyl-ortho-silicate (TEOS) at least inside said isolation trench where silicon is exposed;wherein when said silicon oxide film is formed by reaction of ozone and tetra-ethyl-ortho-silicate (TEOS), the concentration of said ozone is optimized so as to cause a growing rate of said silicon oxide film on said film to be lower than that in said isolation trench where said silicon substrate is exposed, so that a surface of the silicon oxide formed inside the isolation trench is made higher than a surface of the silicon oxide formed on said film.