Patent ID: 6875283

Claim:
An apparatus for forming a film, comprising: a coating process portion for coating an insulating film containing a porogen on a substrate; a first heating process portion having a first processing chamber capable of being hermetically sealed, for performing a first heating process for the substrate coated with the insulating film at a first pressure higher than an atmospheric pressure and at a first temperature, and performing a second heating process for the substrate at the first pressure and at a second temperature higher than the first temperature; a second heating process portion having a second processing chamber capable of being hermetically sealed, for performing a third heating process for the substrate at a second pressure lower than the atmospheric pressure on the substrate heated in the first heating process portion; means for measuring a film thickness of the insulating film in at least one of the first heating process portion and the second heating process portion; means for inferring a relative permittivity of the insulating film corresponding to a value of the measured film thickness; and means for controlling at least one of the first pressure and the second pressure corresponding to the inferred value of the permittivity.