Patent ID: 6764392
Filing Date: 2004-07-20
Classification: B24B,B25B,H01L

Abstract:
A wafer adhering method for adhering a wafer to a wafer holding plate in order to polish a surface to be polished of the wafer by pressing and rubbing the surface to be polished against a polishing pad on a polishing turn table, the method comprising the steps of:holding the wafer by vacuum-chucking the surface to be polished of the wafer such that a surface to be adhered of the wafer forms a convex surface in a vicinity including an arbitrary point in the surface to be adhered within a region surrounding a center of the surface to be adhered of the wafer, and the region being at least not less than 50% of an entire adhesion area; and adhering the wafer to the wafer holding plate from a central portion of the surface to be adhered of the wafer.