Patent ID: 6517635
Filing Date: 2003-02-11
Classification: B08B,H01L

Abstract:
A wet treatment method comprising the steps of:gradually feeding a wet treatment liquid from an introducing port of a wet treatment liquid feed nozzle to a region opposing an object to be wet-treated, the wet treatment liquid feed nozzle opposing the object to be wet-treated and having the introducing port and a discharging port which are open toward the object to be wet-treated, while cause a relative displacement of the object to be wet-treated and the wet treatment liquid feed nozzle, and gradually discharging the wet treatment liquid fed from said wet treatment liquid feed nozzle to the object to be wet-treated through the discharging port without causing the wet treatment liquid to be in contact with portions other than the portion to which the wet treatment liquid has been fed, by controlling a difference between the pressure of the wet treatment liquid in contact with the object to be wet-treated and the atmospheric pressure so as to prevent the wet treatment liquid from flowing out from the region opposing the object to be wet-treated.