Zone polishing using variable slurry solid content

Zone polishing using variable slurry solid content

A slurry dispensing apparatus for use with a chemical mechanical polishing tool for planarizing semiconductor substrates having irregular topology. The apparatus includes a slurry dispensing manifold with a first end suspended over a polishing pad, and a second end for mounting to the chemical mecha...

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Hauptverfasser: LAYADI NACE, LIM JOVIN, MAURY ALVARO, QUEK SEBASTIAN
Format: Patent
Sprache:eng
Schlagworte:
DRESSING OR CONDITIONING OF ABRADING SURFACES
FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
GRINDING
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
PERFORMING OPERATIONS
POLISHING
TRANSPORTING
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creator LAYADI NACE
LIM JOVIN
MAURY ALVARO
QUEK SEBASTIAN
description A slurry dispensing apparatus for use with a chemical mechanical polishing tool for planarizing semiconductor substrates having irregular topology. The apparatus includes a slurry dispensing manifold with a first end suspended over a polishing pad, and a second end for mounting to the chemical mechanical polishing tool. The slurry dispensing manifold has a linear array of nozzles positioned under the suspended manifold. Each nozzle provides an adjusted slurry mixture that is supplied from bifurcated supply lines. A first branch supplying a slurry, and a second branch supplying deionized water. Each nozzle is capable of providing a particular slurry concentration to either decrease or to increase polishing rate in specific zonal areas on a substrate according to its surface topology.
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subjects DRESSING OR CONDITIONING OF ABRADING SURFACES
FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
GRINDING
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
PERFORMING OPERATIONS
POLISHING
TRANSPORTING
title Zone polishing using variable slurry solid content
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