Patent ID: 6620028
Filing Date: 2003-09-16
Classification: B23D,B28D

Abstract:
An apparatus for cutting a wafer, comprising:a chuck table in which a hole is formed, wherein a wafer is mounted on the chuck table so that a front side of the wafer is facing down; a camera installed under the hole in the chuck table for directly recognizing the semiconductor chip shape on the front side of the wafer exposed through the hole; a sawing blade for cutting a back side of the wafer mounted on the chuck table; and a controller electrically connected to the chuck table, the camera and the sawing blade for controlling the driving of the chuck table, the camera and the sawing blade, wherein the controller drives the sawing blade to cut the wafer after the controller properly aligns the location of the wafer to the sawing blade by moving the chuck table according to the information regarding the wafer directly recognized by the camera.