Patent ID: 8637336
Filing Date: 2014-01-28
Classification: B24B,H01L

Abstract:
1. A method for producing a semiconductor wafer, comprising: a placing step in which a semiconductor wafer including a substrate and a semiconductor layer formed on the substrate is placed, with a surface-to-be-ground of the semiconductor wafer facing upward, on a fixing plate of a grinder via a fixing wax; a heating step in which the fixing plate on which the semiconductor wafer is placed in the placing step is heated to soften the fixing wax; a pressure-contact bonding step in which, in a state where the fixing wax is softened in the heating step, the semiconductor wafer is brought into pressure-contact from a side of the surface-to-be-ground by an air bag and bonded onto the fixing plate; a fixing step in which the fixing plate is cooled while the semiconductor wafer bonded onto the fixing plate in the pressure-contact bonding step is pressurized, and thereby the semiconductor wafer is fixed onto the fixing plate by curing the fixing wax; and a grinding step in which the surface-to-be-ground of the semiconductor wafer fixed onto the fixing plate is rotated while being in pressure-contact with a grinding plate of the grinder to be ground, wherein, in the placing step, the semiconductor wafer is placed on the fixing plate via a fixing sheet and the fixing wax, and wherein the fixing sheet is configured with machine made Japanese paper or a nonwoven fabric.