Patent ID: 6540841
Filing Date: 2003-04-01
Classification: B08B

Abstract:
A method for cleaning a surface of a semiconductor wafer, said wafer having a peripheral edge and a center point spaced apart from and circumscribed by said peripheral edge, said method comprising:providing a semiconductor wafer; providing a reservoir comprising cleaning chemicals; mounting said semiconductor wafer onto the surface of a wafer holding chuck; mounting a cylinder having an outside surface in such a manner that a central axis of said cylinder is parallel to a surface of said semiconductor wafer, whereby said central axis furthermore intersects with said center point of said semiconductor wafer, whereby a cylindrical brush is attached to and mounted longitudinally on said outside surface of said cylinder thereby leaving a longitudinal surface of said cylindrical brush exposed; providing said wafer holding chuck with a rotating motion; providing said cylinder with a rotating motion; establishing a first physical contact between said surface of said semiconductor wafer and said exposed longitudinal surface of said cylindrical brush whereby said first physical contact is uniform along the first physical contact; and providing a second contact between said reservoir comprising cleaning chemicals and said cylindrical brush.