Patent ID: 6398879
Filing Date: 2002-06-04
Classification: B05C,Y10S

Abstract:
A method for a cleaning treatment of a cup in a coating mechanism, comprising: a rotary cup with a cover which is rotatable and which encloses a holding means for holding a substrate and side and lower portions of the substrate; a stationary cup which encloses side and lower portions of the covered rotary cup; and a rectifying plate covering the substrate at a position thereabove, comprising the steps of: supplying a cleaning liquid through a middle of the cover of the covered rotary cup toward the rectifying plate while rotating the covered rotary cup to supply the cleaning liquid to a lower surface of the cover with help of a centrifugal force, and at a same time supplying the cleaning liquid toward a lower surface of an outer periphery of the rectifying plate, an inner side surface of the covered rotary cup and a bottom surface of the stationary cup.