Patent ID: 9593409
Date: 2017-03-14
CPC Classifications: C23C,C30B

Claim:
1. A method for forming a dielectric film using a dielectric film forming apparatus including a vacuum chamber; a target disposed inside the vacuum chamber; a substrate holding pedestal for holding substrate, disposed in a position facing the target; a substrate heating portion for heating the substrate supported by the substrate holding pedestal; a sputtering power supply for applying a voltage to the target; a sputtering gas introduction unit for introducing sputtering gas into the vacuum chamber; a deposition preventive plate disposed in a position where particles discharged from the target adhere inside the vacuum chamber; and a deposition preventive plate heating portion for heating the deposition preventive plate, the method, comprising the steps of: preliminarily determining a film forming temperature; forming a seed layer, the step of forming the seed layer including the steps of: introducing sputtering gas into the vacuum chamber from the sputtering gas introduction unit, heating the deposition preventive plate to a temperature higher than a film forming temperature, and emitting vapor from a thin film adhered to the deposition preventive plate so as to form a seed layer on the substrate; and forming a film, the step of forming the film including the steps of setting the substrate to be the film forming temperature, applying a voltage to the target from the sputtering power supply, and sputtering the target so as to form a dielectric film on the seed layer of the substrate.