Patent ID: 7632170

Claim:
A work piece polishing assembly comprising: a polishing pad comprising a polishing surface, an exhaust aperture that extends through the polishing pad from the polishing surface and is configured to receive a slurry from the polishing surface, and a groove disposed and extending along the polishing surface; and an underlying member disposed underlying the polishing pad and comprising a peripheral surface, wherein the underlying member comprises a channel that is in fluid communication with the exhaust aperture and that opens at the peripheral surface of the underlying member, and wherein the channel underlies the groove, and a pattern of the channel mimics at least a portion of the pattern of the groove; wherein the polishing pad comprises a supply hole and the underlying member comprises a supply conduit that is in fluid communication with the supply hole, and wherein the supply hole and the supply conduit are configured to receive the slurry and permit the slurry to flow to the polishing surface of the polishing pad.