Patent ID: 6105567
Filing Date: 2000-08-22
Classification: B28D,H01L

Abstract:
A wafer sawing apparatus for scribing a wafer having a plurality of integrated circuits (ICs) which are separated from each other by a plurality of scribe streets, the wafer sawing apparatus comprising:a scribing blade which rotates and moves along the scribe streets;an ejection assembly comprising two side nozzles and a center nozzle, the side nozzles being respectively positioned on each side of the scribing blade and ejecting a washing solution onto the scribing blade and a top surface of the wafer through an arc measuring about 23.5.degree. to about 43.5.degree. between an upper line of spray and a lower line of spray of the washing solution, and the center nozzle being positioned adjacent to and ahead of a cutting edge of the scribing blade in a driving direction of the scribing blade and ejecting the washing solution at a designated angle relative to horizontal onto the scribing blade and the top surface of the wafer; anda suction nozzle for suctioning silicon particles from the top surface of the wafer, where the particles are created by the scribing blade abrading the wafer along the scribe streets.