Patent ID: 9732910
Date: 2017-08-15
CPC Classifications: F17C,Y10T

Claim:
1. A processing-liquid supply apparatus, comprising: a processing-liquid supply source of a processing liquid for processing a target substrate; a discharge nozzle device which discharges the processing liquid to the target substrate; a supply channel connecting the processing-liquid supply source and the discharge nozzle device such that the processing liquid is supplied to the target substrate; a filter device which is positioned in the supply channel and forming a first side having the processing-liquid supply source and a second side having the discharge nozzle device such that the filter device removes contaminant from the processing liquid; a pump device which is positioned in the supply channel and suctions and discharges the processing liquid in the supply channel; and a control device built into a control computer configured to control suction and discharge by the pump device, wherein the control device built into the control computer is configured to control the pump device such that a discharge portion of the processing liquid flowed to the second side is discharged from the discharge nozzle device, that a remaining portion of the processing liquid on the second side is suctioned to be returned to the first side and that the remaining portion of the processing liquid returned to the first side flows from the first side toward the second side together with a refill portion of the processing liquid from the processing-liquid supply source, and the control device built into the control computer is set such that a return amount of the processing liquid to the filter device is equal to or greater than an amount of the discharge portion of the processing liquid.