Patent ID: 8465591
Filing Date: 2013-06-18
Classification: C23C

Abstract:
1. A film deposition apparatus for depositing 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 produce a layer of a reaction product in a chamber, the film deposition apparatus comprising: a turntable rotatably provided in the chamber; a substrate receiving portion that is provided in one surface of the turntable and the substrate is placed in; a first reaction gas supplying portion configured to supply a first reaction gas to the one surface; a second reaction gas supplying portion configured to supply a second reaction gas to the one surface, the second reaction gas supplying portion being separated from the first reaction gas supplying portion along a rotation direction of the turntable; a separation area located along the rotation 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; a center area that is located substantially in a center portion of the chamber in order to separate the first process area and the second process area, and has an ejection opening that ejects a first separation gas along the one surface; an evacuation opening provided in the chamber in order to evacuate the chamber; a third reaction gas supplying portion configured to supply a third reaction gas to the one surface; a fourth reaction gas supplying portion configured to supply to the one surface a fourth reaction gas that reacts with the third reaction gas thereby to form a second reaction product different from a first reaction product formed from the first reaction gas and the second reaction gas, the fourth reaction gas supplying portion being separated from the third reaction gas supplying portion along the rotation direction of the turntable; and a controlling portion configured to control the first through the fourth reaction gas supplying portions so that depositing a first film from the first reaction gas from the first reaction gas supplying portion and the second reaction gas from the second reaction gas supplying portion is carried out alternately with depositing a second film from the third reaction gas from the third reaction gas supplying portion and the fourth reaction gas from the fourth reaction gas supplying portion, wherein the separation area includes a lower surface that is lower than a ceiling surface of each of the first and the second process areas in relation to the turntable and has a width becoming greater toward a circumference of the vacuum chamber, the width being along the rotation direction, thereby to create in relation to the one surface of the turntable a thin space, and