Patent ID: 6864154
Filing Date: 2005-03-08
Classification: B24B,Y10S

Abstract:
1. A process of lapping a second side of a wafer, which is provided at a first side thereof with a ultraviolet tape attached to said first side, said method comprising the steps of: irradiating the ultraviolet tape attached to the first side of the wafer with ultraviolet light; maintaining a lapping jig, on which the wafer is to be placed, at a temperature higher than a binder's melting temperature but lower than a deformation temperature of the ultraviolet tape; applying the binder to an upper surface of the lapping jig; bonding the first side of the wafer to the lapping jig via the binder; placing the lapping jig having the wafer bonded thereto on a lapping plate; lapping the second side of the wafer to cause the wafer to have a predetermined thickness; and removing the wafer from the lapping jig; wherein said irradiating step is performed before said lapping step.