Patent ID: 7059942
Filing Date: 2006-06-13
Classification: B24B,H01L

Abstract:
1. A method of backgrinding a wafer, said wafer characterized by a front side and a backside, said method comprising the steps of: providing tape and a chuck, said tape suitable for protecting a wafer during backgrinding and said chuck suitable for use during backgrinding of the wafer; placing the tape onto the chuck; placing the wafer onto the tape with the front side of the wafer facing the tape; thereafter backgrinding the backside of the wafer; before removing the wafer from the tape, spraying the backside of the wafer with water under a pressure of about 40 PSI to about 60 PSI while scrubbing the backside of the wafer; removing the wafer from the tape while leaving the tape on the chuck; thereafter cleaning the front side of the wafer, wherein the step of cleaning the front side of the wafer comprises spraying the front side of the wafer with water under a pressure of about 500 PSI to about 1500 PSI while scrubbing the front side of the wafer; and drying the wafer.