Patent ID: 7743449
Filing Date: 2010-06-29
Classification: B08B,H01L

Abstract:
1. A system for single side contact cleaning of a wafer comprising: at least three edge rollers, the at least three edge rollers capable of fully supporting a wafer by an edge of the wafer; a first actuator having at least one of the edge rollers mounted thereon; a second actuator having a first scrubbing roller mounted thereon; and a controller coupled to the first actuator and the second actuator, the controller capable of applying a variable first scrubbing force to a first side of the wafer through the second actuator and the first scrubbing roller and wherein the controller is further capable of applying a variable second force to the edge of the wafer through the first actuator and the at least one edge roller, the second force being proportional to and sufficient to fully counteract the variable first scrubbing force applied to the first side of the wafer.