Patent ID: 11945075
Assignee: EBARA CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method for dressing a polishing member by causing a dresser to move on the polishing member used for a polishing apparatus for a substrate, the dresser being enabled to adjust a swing moving speed in a plurality of scanning areas set on the polishing member along a moving direction, the method comprising:
a step of measuring a surface height of the polishing member in a plurality of monitoring areas set in advance on the polishing member along the moving direction of the dresser;
a step of creating a dress model matrix defined from the plurality of monitoring areas and the plurality of scanning areas;
a step of setting an evaluation index based on a deviation from the target cut amount, a deviation from the staying time according to a reference recipe, and a speed difference between neighboring scanning areas, the deviation from the target cut amount being a square value of the difference between the target cut amount and a wear amount of the polishing member calculated based on the dress model matrix; and
a step of setting the moving speed in each of the plurality of scanning areas of the dresser based on the evaluation index,
wherein at least one of a parameter to determine the target cut amount or a parameter to determine the evaluation index is made to change automatically.