Patent ID: 8192257
Filing Date: 2012-06-05
Classification: B24B

Abstract:
1. A planarizing pad, comprising: a pad material having a thickness and a plurality of openings extending from a surface into the pad and having a depth less than the thickness of the pad, and a solid fill material partially filling the openings such that the pad material extends beyond a surface of the solid material, the solid fill material consisting essentially of water-soluble particles within a water-soluble, calcium-based binder; the water-soluble particles selected from the group consisting of high molecular weight sugars, water-soluble salts, water-soluble gums and water-soluble resins, said solid fill material compatible and substantially non-removable with a planarizing solution used with the pad during a planarizing or polishing operation and dissolvable upon contact with a composition selective to the solid fill material relative to the pad, the pad being devoid of abrasives.