Patent ID: 6593170
Filing Date: 2003-07-15
Classification: B28D,H01L

Abstract:
A method of dividing a semiconductor wafer, of which the surface has a plurality of chips sectioned by streets, into individual chips, characterized in that said method comprises:a scribing step in which division guide lines are formed by drawing scribed lines along the streets on the surface of said semiconductor wafer; a tape sticking step in which a tape is stuck onto the surface having said division guide lines formed thereon, of said semiconductor wafer; and a back surface cutting step in which cutting grooves are formed in the back surface, to which said tape has been stuck, of said semiconductor wafer such that a bit of uncut portions are left along said division guide lines, and: by the formation of said cutting grooves, said uncut portions are completely separated with the aid of said division guide lines to divide said semiconductor wafer into individual chips.