Patent ID: 8371318
Filing Date: 2013-02-12
Classification: H01L

Abstract:
1. A liquid processing method using a liquid processing apparatus having a casing; a substrate holding mechanism disposed in the casing, the substrate holding mechanism being configured to hold a substrate to be processed; a process-liquid supplying mechanism configured to supply a process liquid to the substrate to be processed held by the substrate holding mechanism; a draining cup configured to cover the substrate to be processed held by the substrate holding mechanism in the casing from an outer peripheral side, the draining cup being configured to receive a process liquid that has been used for cleaning the substrate to be processed; and a draining pipe connected to the draining cup, the draining pipe being configured to discharge outside the process liquid having passed through the draining cup, the liquid processing method comprising: a holding step in which the substrate to be processed is held by the substrate holding mechanism; a rotating step in which the substrate to be processed held by the substrate holding mechanism is rotated by the rotating mechanism; and a process-liquid supplying step in which a process liquid is supplied by the process-liquid supplying mechanism to the substrate to be processed held by the substrate holding mechanism, wherein: the process-liquid supplying step includes: a second chemical-liquid supplying step, in which an alkaline process liquid is supplied; a first chemical-liquid supplying step after the second chemical-liquid supplying step, in which a hydrofluoric process liquid is supplied; and a drying-liquid supplying step, after the first chemical-liquid supplying step, in which an organic solvent for drying the substrate to be processed is supplied; and after the second chemical-liquid supplying step and before the drying-liquid supplying step, there is performed a removing step in which an alkaline component adhering to the draining cup is removed by supplying a cleaning liquid to the draining cup.