Patent ID: 8758855

Claim:
A method of forming a coating film comprising using a coating film forming apparatus comprising an outer cup provided detachably to surround a spin chuck, an inner cup provided detachably to surround a region underneath a substrate held upon said spin chuck, said method comprising the steps of: mounting a cleaning nozzle, to which a cleaning liquid supply tube is connected, upon a nozzle mounting cutout part provided to said inner cup in engagement therewith such that said cleaning liquid is supplied from a supply aperture toward a peripheral edge 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, 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, said cutout part being formed such that said supply aperture is located at a side of said outer surface of said inner cup; holding a substrate upon said spin chuck and forming a coating film by supplying a chemical liquid upon said substrate; cleaning a peripheral edge part of said substrate by supplying a cleaning liquid from said cleaning nozzle to a peripheral part of a bottom surface of said substrate while rotating said spin chuck; dismounting said cleaning nozzle from said inner cup in a state in which said cleaning liquid supply tube is connected thereto; and removing said inner cup.