Patent ID: 6080444
Filing Date: 2000-06-27
Classification: C23C,H01L

Abstract:
A CVD film forming method, comprising:placing a substrate on a susceptor equipped with a heating member and situated in a chamber;forming a film on the substrate by heating the substrate using the heating member while controlling a total rate of supplying gas including at least a process gas into said chamber so as to maintain constant pressure inside of said chamber while exhausting the gas including at least the process gas from said chamber at a fixed flow rate; andannealing the substrate by heating said substrate by using said heating member while also controlling a total rate of supplying individual gases including at least an annealing gas into the chamber while exhausting the gas including at least the annealing gas from said chamber at said fixed flow rate so as to maintain pressure in said chamber substantially constant,wherein the controlling of the total rate of supplying gas continues during changeover between the annealing step and the film forming step so as to avoid pressure change in said chamber during the changeover and wherein said annealing step occurs either immediately before or immediately after the film forming step.