Patent ID: 8246759
Filing Date: 2012-08-21
Classification: B05D,H01L

Abstract:
1. A substrate processing apparatus configured to process a substrate while rotating the substrate, with a plate surface of the substrate being oriented substantially in a horizontal direction, the substrate processing apparatus comprising: a table including a rotatable base plate having projecting members projected upward, the table being capable of supporting a substrate such that the projecting members contact the substrate from below with a gap being formed between the substrate and the table; a rotation driving mechanism configured to rotate the base plate; a pressure adjusting apparatus including a suction duct line having one end thereof being opened to the gap and a suction mechanism connected to the suction duct line; and a control device configured to control a suction performed by the pressure adjusting apparatus while the one end of the suction duct line is spaced apart from the substrate and the substrate is supported on the projecting members of the base plate and rotated with the base plate by the rotation driving mechanism, wherein the control device is connected to the rotation driving mechanism and the pressure adjusting apparatus, and is configured to control the suction performed by the pressure adjusting apparatus based on at least a rotational velocity of the base plate rotated by the rotation driving mechanism, and wherein the control device is configured to perform the suction by the pressure adjusting apparatus when the rotational velocity of the base plate rotated by the rotation driving mechanism is not more than a preset rotational velocity, and the control device is configured to stop the suction by the pressure adjusting apparatus when the rotational velocity of the base plate is more than the preset rotational velocity.