Patent ID: 6398623
Filing Date: 2002-06-04
Classification: B24B,G11B,Y10T

Abstract:
A method of working a device for individually separating a plurality of devices formed on one substrate, comprising:a supporting step for allowing a suspension to support the devices on a rear surface opposite to a front surface of the substrate on which the devices are formed; a notching step for cutting a notch in a first direction at a boundary set between the devices on the substrate to some midpoint of a thickness of the substrate along the thickness of the substrate from the front surface of the substrate; and a substrate cutting step for bringing a wire saw of a diameter greater than a width of the notch into contact with the notch, and slicing the substrate in the first direction across the overall thickness of the substrate along the thickness of the substrate while sliding the wire saw in a longitudinal direction, thereby smoothing a cut surface formed by cutting while cutting the substrate.