Patent ID: 7837804

Claim:
A substrate cleaning method comprising: performing a cleaning process on a target substrate while feeding a cleaning liquid onto the substrate; and performing a dry process on the target substrate after the cleaning process, wherein the dry process comprises, rotating the target substrate in a horizontal state during a predetermined period, starting feeding of a rinse liquid onto a surface of the target substrate at a first time point within the predetermined period, while setting a liquid feed point where the rinse liquid is supplied onto the target substrate, at a center of the target substrate, starting feeding of an inactive gas onto the surface of the target substrate at or before the first time point within the predetermined period, while setting a gas feed point where the inactive gas is supplied onto the target substrate at a gas start position 10 to 50 mm distant from the center of the target substrate, feeding the rinse liquid onto the surface of the target substrate during a period from the first time point to a second time point within the predetermined period, while moving the liquid feed point radially outward from the center of the target substrate to an intermediate position on the substrate, feeding the inactive gas onto the surface of the target substrate during the period from the first time point to the second time point, while moving the gas feed point radially inward from the gas start position to the center of the target substrate, feeding the rinse liquid onto the surface of the target substrate during a period from the second time point to a third time point within the predetermined period, while moving the liquid feed point radially outward from the intermediate position to a periphery of the target substrate, and feeding the inactive gas onto the surface of the target substrate during the period from the second time point to the third time point and a period from the third time point to a fourth time point within the predetermined period, while moving the gas feed point radially outward from the center of the target substrate to the periphery of the target substrate, such that the gas feed point is kept located radially inward of the liquid feed point during the period from the second time point to the third time point.