Patent attributes
A coating process method in which a coating liquid is discharged onto the surface of a target substrate to be processed while rotating the target substrate so as to expand the coating liquid radially outward on the target substrate and, thus, to form a coated film comprises the step of detecting that the actual discharging of a coating liquid from a coating liquid discharging nozzle is started, and the step of controlling based on a signal of the detection at least one of the driving timing of a pump for allowing the coating liquid to be discharged from the coating liquid discharging nozzle, the operation timing of a valve mounted to a pipe for supplying the coating liquid into the coating liquid discharging nozzle, and the rotation starting or stopping timing of the target substrate.
