Dressing a wafer polishing pad

Abrading – Precision device or process - or with condition responsive... – Computer controlled

Reexamination Certificate

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Details

C451S010000, C451S021000, C451S056000

Reexamination Certificate

active

07846006

ABSTRACT:
A dressing apparatus for dressing a polishing pad includes a dressing member engageable with the polishing pad. The dressing apparatus is adapted to change the amount of force exerted by the dressing member on the polishing pad as the dressing member moves radially along the polishing pad. A controller for controlling the dressing apparatus has pre-programmed recipes that are selectable based on the radial profile of a measured polished wafer.

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