Patent ID: 8137574
Filing Date: 2012-03-20
Classification: B24B,C03C,Y10T

Abstract:
1. A processing method of a glass substrate by processing a surface of a glass substrate, which comprises: a flatness distribution measurement step of measuring a flatness of a first glass substrate prior to processing at each site within a surface of the substrate; a first processing step of processing the surface of the first glass substrate that has been subjected to the flatness distribution measurement while changing a processing condition for each site within the surface of the substrate; a second processing step of finish-polishing the surface of the first glass substrate that has been subjected to the first processing step; and a step of measuring an in-plane distribution of the processing amount of the first glass substrate by the second processing step, and further comprising, with respect to a second glass substrate having the same properties as the first glass substrate: a flatness distribution measurement step of measuring a flatness of the second glass substrate prior to processing at each site within a surface of the substrate; a first processing step of processing the surface of the second glass substrate that has been subjected to the flatness distribution measurement while changing a processing condition for each site within the surface of the substrate; and a second processing step of finish-polishing the surface of the second glass substrate that has been subjected to the first processing step, wherein a processing amount for each site within the surface of the second glass substrate in the first processing step is determined from the flatness distribution within the surface of the second glass substrate prior to processing as measured in the flatness distribution measurement step and the in-plane distribution of the processing amount of the first glass substrate by the second processing step.