Patent ID: 8518183

Claim:
A film deposition apparatus configured to deposit a film on a substrate by carrying out a cycle of alternately supplying at least two kinds of reaction gases that react with each other to the substrate to stack multiple layers of a reaction product in a vacuum chamber so that a thin film is formed, the film deposition apparatus comprising: a rotation table rotatably provided in the vacuum chamber; a substrate providing area provided in one surface of the rotation table and where the substrate is provided; a first reaction gas supplying part configured to supply a first reaction gas to the surface of the substrate where the substrate providing area is provided; a second reaction gas supplying part configured to supply a second reaction gas to the surface of the substrate where the substrate providing area is provided, the second reaction gas supplying part being separated from the first reaction gas supplying part along a rotational direction of the rotation table; a separation area located along the rotational direction between a first process area in which the first reaction gas is supplied and a second process area in which the second reaction gas is supplied so that an atmosphere of the first process area and an atmosphere of the second process area are separated from each other, the separation area including a separation gas supplying part configured to supply a first separation gas, and a convex part projecting downward whose lower surface forms a first ceiling surface, the first process area and the second process area having a second ceiling surface, the lowest part of the first ceiling surface being lower than the lowest part of the second ceiling surface and configured to form in relation to the rotation table a narrow space in which the first separation gas flows from the separation area to the process area side so as to prevent the first reaction gas and the second reaction gas from entering the narrow space, the first ceiling surface being positioned at both sides in the rotational direction of the separation gas supplying part; a center part area that is located substantially in a center part of the chamber in order to separate the atmosphere of the first process area and the atmosphere of the second process area, the center part area having an ejection hole configured to eject a second separation gas and provided at a substrate providing surface side of the rotation table; an evacuation port configured to evacuate the reaction gas with the first separation gas diffused to both sides of the separation area and the second separation gas ejected from the center part area; and a substrate cooling part configured to jet nitrogen gas or inert gas onto the substrate in the vacuum chamber so that the substrate is cooled.