Patent ID: 6358117
Filing Date: 2002-03-19
Classification: B24B,B24D

Abstract:
A processing method for a wafer, having two circular tables, opposite to and independent of each other, are arranged so that the peripheral end portion of one table coincides with an axial center of a rotary shaft of the other table at all times, comprising the steps of:fixing a grinding stone on an opposite surface of the one table, fixing the wafer on an opposite surface of the other table; rotating the two tables independently relative to each other; and pressing at least one table on the other while said at least one table is relatively moved in a direction, so that a surface of the wafer is ground, wherein the surface of the wafer is ground while controlling a pitch of grinding striations produced across all the surface of the wafer processed by the grinding stone to be 1.6 mm or less.