摘要:
The method includes the steps of measuring a surface height of a polishing member 10 at each of plural oscillation sections Z1 to Z5 which are defined in advance on the polishing member 10 along an oscillation direction of a dresser 5; calculating a difference between a current profile obtained from measured values of the surface height and a target profile of the polishing member 10; and correcting moving speeds of the dresser 5 in the plural oscillation sections Z1 to Z5 so as to eliminate the difference.
摘要:
A method of conditioning a surface of a polishing pad is used for conditioning a polishing pad on a polishing table for polishing a thin film formed on a surface of a substrate. The conditioning method includes bringing a dresser into contact with the polishing pad, and conditioning the polishing pad by moving the dresser between a central part of the polishing pad and an outer circumferential part of the polishing pad. A moving speed of the dresser at a predetermined area of the polishing pad is higher than a standard moving speed of the dresser at the predetermined area of the polishing pad.
摘要:
The method includes: calculating an increment of a sliding distance of a dresser by multiplying a relative speed between the dresser and a polishing member by a contact time between them; correcting the increment of the sliding distance by multiplying the calculated increment of the sliding distance by at least one correction coefficient; calculating the sliding distance by repeatedly adding the corrected increment of the sliding distance to the sliding distance according to elapse of time; and producing the sliding-distance distribution of the dresser from the obtained sliding distance and a position of a sliding-distance calculation point. The at least one correction coefficient includes an unevenness correction coefficient provided for the sliding-distance calculation point. The unevenness correction coefficient is a correction coefficient that allows a profile of the polishing member to reflect a difference between an amount of scraped material of the polishing member in its raised portion and an amount of scraped material of the polishing member in its recess portion.