Method and apparatus for polishing substrates

Details Method and apparatus for polishing substrates Method and apparatus for polishing substrates

2006-07-04

2006-07-04

Wilson, Lee D. (Department: 3723)

Abrading

Abrading process

Utilizing fluent abradant

C451S527000, C451S041000

Reexamination Certificate

active

07070480

ABSTRACT:
Method and apparatus for polishing substrates. A chemical mechanical polishing article comprises a body and a patterned surface. The patterned surface comprises a plurality of slurry distribution grooves and a plurality of islands on the body. Each of the plurality of the islands comprises a base portion, a polishing surface disposed thereon, and a contoured surface disposed therebetween. The base portion comprises one or more sidewalls defining at least a portion of the plurality of slurry distribution grooves. The polishing surface is smaller than the base portion, the difference therebetween attributable to the contoured surface. In a particular embodiment, conductive materials and low k dielectric films are polished with reduced or minimum substrate surface damage.

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