Patent ID: 9192878
Filing Date: 2015-11-24
Classification: B01D,H01L

Abstract:
1. A liquid processing apparatus comprising: at least one processing unit configured to perform a liquid process by supplying a chemical liquid to a substrate; a reservoir configured to store the chemical liquid; a supply line configured to supply the collected chemical liquid to the at least one processing unit; a collecting line configured to collect the chemical liquid supplied to the at least one processing unit to return the chemical liquid back to the reservoir; and a gas supply unit configured to supply an inert gas into the collecting line, wherein the gas supply unit includes a gas supply pipe connected with the collecting line, and the inert gas is supplied to the chemical liquid in the collecting line thereby reducing an amount of oxygen to be dissolved in the chemical liquid in the collecting line, such that corrosion of wirings formed on the substrate by recirculated chemical liquid is suppressed.