Patent ID: 9378988
Filing Date: 2016-06-28
CPC Classification: B08B,H01L

Claim Text:
1. A substrate processing method that supplies a processing solution to a substrate, comprising the steps of (a) causing a plurality of nozzle arms to pivot such that a discharge head arranged at the tip end thereof moves between a processing position and a standby position, the discharge head discharging a processing solution to a substrate held on a substrate holding element in a substantially horizontal position while being caused to rotate by the substrate holding element, the processing position being above a substrate held on said substrate holding element, the standby position being outside a cup surrounding said substrate holding element, said plurality of nozzle arms being arranged in parallel to each other in a horizontal direction, and (b) cleaning at least part of said plurality of nozzle arms that are to face a substrate held on said substrate holding element when said discharge head has moved to said processing position, wherein in said step (b), while a cleaning solution is ejected obliquely downward from a shower nozzle when said discharge head is at said standby position, said plurality of nozzle arms are caused to move up and down such that said plurality of nozzle arms cut across a jet of the cleaning solution discharged from said shower nozzle, and thereby, the cleaning solution is sprayed on all of said plurality of nozzle arms in order.