Patent ID: 6992013

Claim:
A method of forming a fine pattern comprising the steps of: forming a silicon-oxide-based film over a substrate by using SiH 4 and N 2 O as material gases at a reaction temperature of over 400° C., wherein, in the step of forming the silicon-oxide-based film, a nitrogen content of a surface of the silicon-oxide-based film is made to about a value of 0.01 atm % to 0.08 atm %; forming a chemically-amplified photoresist layer on the silicon-oxide-based film; transferring a mask pattern onto the chemically-amplified photoresist layer upon exposure through a mask; and exposing the surface of the silicon-oxide-based film to plasma atmosphere of O 2 or N 2 O between the step of forming the silicon-oxide-based film and the step of forming the chemically-amplified photoresist layer.