Patent ID: 6858091
Filing Date: 2005-02-22
Classification: H01L,Y10S

Abstract:
1. A method for minimizing galvanic corrosion effects in a single-wafer cleaning system, the method comprising: spraying a cleaning chemistry containing corrosion inhibitors onto a surface of a wafer, exposing the surface of the wafer to the cleaning chemistry for a period of time; refreshing a concentration gradient at an interface of the cleaning chemistry and the surface of the wafer; and applying a rinsing agent and a drying agent simultaneously from independent nozzles angled toward an outer edge of the wafer above the wafer while the wafer is rotating to remove the cleaning chemistry, wherein the rinsing agent is different than the cleaning chemistry and the drying agent dries the surface of the wafer prior to a concentration of the corrosion inhibitors being diluted to a level insufficient to provide corrosion protection.