Patent ID: 6582983
Filing Date: 2003-06-24
Classification: H01L,Y10S

Abstract:
A method of protecting wafer bonding pads from silicon wafer dust and contamination during singulation or Dicing, comprising the steps of:providing a clean wafer to be saw cut mounted on a dicing tape; applying a neutral hardened water soluble film over the surface of the wafer to be cut; sawing through said water soluble film and said wafer and partially into said dicing tape; cooling said wafer with clean cool water while sawing the wafer without removing the water soluble film; washing said wafer in a wafer washer using high pressure clean warm deionized water to remove said neutral hardened water soluble film from the surface of individual sawn die and from the sawn kerf in said wafer; and drying said wafer prior to removing individual die from said wafer mounted on said dicing tape.