Patent ID: 8906246

Claim:
A film deposition method comprising steps of: transferring a plurality of substrates, each having a pattern including a concave part therein, into a vacuum chamber and placing the plurality of the substrates on a turntable in the vacuum chamber along a circumferential direction of the turntable at equal angular intervals; supplying a first reaction gas to the plurality of the substrates in the vacuum chamber from a first reaction gas supplying part, thereby allowing the first reaction gas to be adsorbed on the plurality of the substrates; supplying a second reaction gas that reacts with the first reaction gas to the plurality of the substrates in the vacuum chamber from a second reaction gas supplying part, thereby allowing the first reaction gas adsorbed on the plurality of the substrates to react with the second reaction gas and thus forming a reaction product of the first reaction gas and the second reaction gas on the substrate; supplying an alteration gas to the plurality of the substrates in the vacuum chamber through an activated gas supplying part that is capable of activating the alteration gas, thereby altering properties of the reaction product on the plurality of the substrates; and supplying an etching gas to the substrate in the vacuum chamber through the activated gas supplying part under an environment where the reaction product is not being formed, thereby etching the reaction product, wherein the etching gas is supplied in addition to the alteration gas to the plurality of the substrates in the vacuum chamber through the activated gas supplying part, thereby performing alteration of the reaction product and etching of the reaction product in the step of supplying the alteration gas, and wherein the forming and the etching of the reaction product are performed continuously and repeatedly on each of the plurality of the substrates on the turntable in the vacuum chamber.