Methods for conditioning surfaces of polishing pads after chemical-mechanical polishing, and apparatuses for conditioning surfaces of polishing pads
AssigneeMicron Technology, Inc.
InventorBrian E. Cron
Life of this patent
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Abstract
The invention includes a method for conditioning a surface of a polishing pad after chemical-mechanical polishing of a semiconductor substrate with the pad surface. The method includes exposing the pad surface to steam, and the steam can comprise ammonium citrate. The invention also includes an apparatus for conditioning a surface of a polishing pad after chemical-mechanical polishing of a semiconductor substrate with the pad surface. The apparatus includes a conditioning stone, and a steam outlet port proximate the conditioning stone. The steam outlet port is configured to jet steam onto the pad surface during the conditioning of the pad surface.
Claims35
A method for conditioning a surface of a polishing pad after chemical-mechanical polishing of a semiconductor substrate with the pad surface, comprising exposing the pad surface to steam.
A method for conditioning a surface of a polishing pad after chemical-mechanical polishing of a semiconductor substrate with the pad surface, comprising:
- providing an apparatus which includes a steam outlet port proximate a conditioning stone;
- positioning the pad with the pad surface against the conditioning stone and displacing the pad relative to the condition stone to rub the pad surface with the condition stone;
- and
- flowing steam through the outlet port and across the pad surface as the pad surface is rubbed with the conditioning stone.
A method for chemical-mechanical polishing of a semiconductor substrate with a polishing pad surface and reconditioning the pad surface, comprising:
- providing a semiconductor substrate having a surface which is to be chemical-mechanical polished;
- providing a polishing pad proximate the semiconductor substrate surface and utilizing a surface of the polishing pad to chemical-mechanical polish the semiconductor substrate surface;
- providing an apparatus which includes a steam outlet port proximate a conditioning stone;
- positioning the pad with the pad surface against the conditioning stone and displacing the pad relative to the condition stone to rub the pad surface with the condition stone;
- and
- flowing steam through the outlet port and across the pad surface as the pad surface is rubbed with the conditioning stone.
An apparatus for conditioning a surface of a polishing pad after chemical-mechanical polishing of a semiconductor substrate with the pad surface, comprising:
- a conditioning stone;
- and
- a steam outlet port proximate the conditioning stone;
- the steam outlet port being configured to jet steam onto the pad surface during the conditioning of the pad surface.
Dependencies are inferred from the claim text.