Patent ID: 8186298

Claim:
A coating film forming apparatus that holds a substrate upon a spin chuck and forms a coating film by supplying a chemical liquid upon a top surface of said substrate, said coating film forming apparatus comprising: an outer cup provided detachably to surround said spin chuck; an inner cup provided detachably to surround a region underneath said substrate held upon said spin chuck; a cleaning nozzle configured to supply a cleaning liquid for cleaning a peripheral edge part of said substrate, such that said cleaning liquid is supplied from a supply aperture toward a peripheral part of a bottom surface of said substrate obliquely in an upward direction from an inner side region to said peripheral edge part of said bottom surface; a cutout part for nozzle mounting, said cutout part being cut out in a top part of said inner cup to extend from an inner surface to an outer surface of said inner cup to engage with said cleaning nozzle in a state such that said supply aperture is located at a side of said outer surface of said inner cup; and a cleaning liquid supply tube connected to said cleaning nozzle, said cleaning nozzle being detachable to said cutout part in a state in which said cleaning liquid supply tube is connected.