Chemical mechanical polishing method for reducing slurry reflux

Abrading – Abrading process – Glass or stone abrading

Reexamination Certificate

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C451S005000, C451S006000, C451S285000, C451S287000

Reexamination Certificate

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06843709

ABSTRACT:
A method of polishing a surface (120) of an article, e.g., a semiconductor wafer (112, 212), using a polishing layer (108, 208) in the presence of a polishing medium, such as a slurry (116). The method includes selecting the rotational rate of the article or the velocity of the polishing layer, or both, so as to control either removal rate uniformity or the occurrence of defects on the polished surface, or both.

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