摘要:
The present invention is a method for producing a bonded wafer, comprising at least: bonding a base wafer serving as a support substrate to a bond wafer made of a silicon single crystal via an insulator film or directly bonding the wafers to provide a bonded wafer; and reducing a thickness of the bond wafer to form a thin film made of the silicon single crystal on the base wafer, wherein the thickness of the bonded wafer is reduced based on at least surface grinding while measuring the thickness of the bond wafer, and surface grinding with respect to the bond wafer is stopped when the thickness of the bond wafer reaches a target thickness. As a result, the method for producing a bonded wafer enabling a silicon single crystal thin film to precisely have a desired film thickness, a bonded wafer, and a surface grinding machine enabling a silicon single crystal thin film to precisely have a desired film thickness are provided.
摘要:
The present invention provides a method for manufacturing a bonded wafer prepared by bonding a base wafer and a bond wafer, comprising at least a step of etching an oxide film in a terrace region in an outer periphery of the bonded wafer wherein the oxide film in the terrace region is etched by spin-etching with holding and spinning the bonded wafer. Thereby, there is provided a method for manufacturing a bonded wafer in which an oxide film formed in a terrace region of a base wafer is efficiently etched without removing an oxide film on the back surface of the base wafer.