Patent ID: 7322385

Claim:
An apparatus for drying a substrate comprising: a rotational supporting portion on which a substrate is placed; a first supplying portion having a first nozzle for spraying a first liquid having a surface tension to the substrate that is placed on the supporting portion; a second supplying portion comprising: a second nozzle for spraying second liquid having a smaller surface tension than the surface tension of the first liquid to the substrate that is placed on the supporting portion, wherein the second liquid comprises alcohol vapor; a vapor generating portion generating the alcohol vapor; a gas supplying pipe through which a carrier gas for carrying the alcohol vapor generated by the vapor generating portion to the second nozzle is supplied to the vapor generating portion; and a vapor supplying pipe through which the alcohol vapor generated by the vapor generating portion is supplied to the second nozzle; and a controlling portion for controlling the second supplying portion such that the amount of the second liquid reaching the center of the substrate that is placed on the supporting portion gradually increases.