Patent ID: 8545712
Filing Date: 2013-10-01
Classification: B24B,H01L

Abstract:
1. A method of manufacturing semiconductor wafers in which front and back surfaces of the semiconductor wafers are simultaneously polished with a double-side polishing machine, the double-side polishing machine including a carrier for accommodating the semiconductor wafer, and an upper press platen and a lower press platen for sandwiching the carrier, wherein the method comprises: accommodating the semiconductor wafer in the carrier; and conducting a double-side simultaneous polishing in a plurality of steps in which polishing conditions are differently set, the polishing being conducted while a polishing slurry is fed to between the back surface of the semiconductor wafer and a surface of the upper press platen, and between the front surface of the semiconductor wafer and a surface of the lower press platen; wherein, in a final step of the plurality of steps of the double-side simultaneous polishing, a difference between a thickness of the semiconductor wafer and a thickness of the carrier is set in a range of more than 0 μm to less than 5 μm, and wherein a polishing amount of both surfaces of the semiconductor wafer is set at 5 μm or less in total in the final step of the plurality of steps of the double-side simultaneous polishing.