Patent ID: 6833109
Filing Date: 2004-12-21
Classification: H01L,Y10S

Abstract:
A method for storing a polished semiconductor wafer after completion of its chemical mechanical polishing process for a period of time intervened between: said chemical mechanical polishing process for forming a metallic wiring in the polished semiconductor wafer; and, a cleaning process of the thus polished semiconductor wafer, wherein the cleaning process follows the chemical mechanical polishing process, the method comprising the steps of:adding an anticorrosion agent to pure water in a storage tank before placing the polished semiconductor wafer in the storage tank, wherein said anticorrosion agent added to said pure water prevents an oxidizing agent contained in an abrasive from chemically attacking said metallic wiring of said polished semiconductor wafer, wherein said abrasive is used in said chemical mechanical polishing process; and placing the polished semiconductor wafer in the storage tank containing the pure water and anticorrosion agent.