Patent ID: 8283252
Filing Date: 2012-10-09
Classification: B24B

Abstract:
1. A method of manufacturing a semiconductor wafer comprising holding a semiconductor wafer in a wafer holding hole formed in a carrier plate, and simultaneously polishing a front and back surface of said semiconductor wafer by driving said carrier plate to make a circular motion associated with no rotation on its own axis within a plane parallel with a surface of said carrier plate between a pair of polishing members disposed to face to each other, while supplying a polishing agent to said semiconductor wafer, said method being characterized in that either one of said polishing members is made of bonded abrasive body having bonded abrasive grains which have a grain size in a range of 0.1-3.0 μm and the other of said polishing members is made of a polishing surface plate with a polishing cloth extended over a surface thereof facing to said bonded abrasive body so as to differentiate a quantity to be polished off from said semiconductor wafer between said front surface and said back surface thereof.