Patent ID: 7364626

Claim:
A substrate cleaning method comprising the steps of: ejecting a cleaning liquid by a cleaning nozzle onto a rotating substrate within a cup for preventing the cleaning fluid from scattering away while moving the cleaning nozzle in the radial direction of the substrate from a center of the substrate to a periphery of the substrate, thereby cleaning the substrate; supplying a second liquid onto the substrate by a first liquid nozzle in the radial direction of the substrate simultaneously with supplying of the cleaning liquid by the cleaning nozzle when the substrate is cleaned by the cleaning nozzle, thereby forming a liquid film on the substrate, the second liquid supplied onto the substrate by the first liquid nozzle is supplied closer to a rotating center of the substrate than the cleaning nozzle; and supplying the second liquid onto the rotating center of the substrate by a second liquid nozzle when the cleaning nozzle and the first liquid nozzle get access to a vicinity of a periphery of the substrate, thereby forming the liquid film on the substrate together with the first liquid nozzle.