Patent ID: 6217657
Filing Date: 2001-04-17
Classification: B05D,G03F

Abstract:
A resist processing system comprising:a mounting table for mounting a substrate thereon;a nozzle for expelling out a processing solution to the substrate mounted on the mounting table;a vessel for storing the processing solution;pressurizing means for introducing a pressurized gas into the vessel, thereby pressurizing the processing solution to send the processing solution from the vessel to the nozzle;a processing solution supply line provided between the vessel and the nozzle, for guiding the processing solution sent out from the vessel by said pressurizing means, to the nozzle; anda deaeration mechanism attached to said processing solution supply line, for separating and removing a gaseous component from the processing solution;said deaeration mechanism comprisingan airtight chamber,a gas-liquid separation membrane provided in the airtight chamber, one side portion of which is communicated with said processing solution supply line through which said processing solution is supplied to said one side portion,a vacuum evacuation line communicated with the other side portion of the gas-liquid separation membrane,evacuation means for evacuating the other side portion of the gas-liquid separation membrane through the vacuum evacuation line, anda trap tank attached to the vacuum evacuation line, for receiving a liquid component permeating through the gas-liquid separation membrane and leaking into the vacuum evacuation line.