Lithographic apparatus and surface cleaning method

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United States of America Patent

PATENT NO 9927716
SERIAL NO

15589674

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Abstract

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An apparatus and method for cleaning a contaminated surface of a lithographic apparatus are provided. A liquid confinement structure comprises at least two openings used to supply and extract liquid to a gap below the structure. The direction of flow between the openings can be switched. Liquid may be supplied to the gap radially outward of an opening adapted for dual flow. Supply and extraction lines to respectively supply liquid to and extract liquid from the liquid confinement structure have an inner surface that is resistant to corrosion by an organic liquid. A corrosive cleaning fluid can be used to clean photo resist contamination.

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Patent Owner(s)

Patent OwnerAddress
ASML NETHERLANDS B VDE RUN 6501 VELDHOVEN 5504 DR

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hoekerd, Kornelis Tijmen Eindhoven, NL 18 182
Kaneko, Takeshi 's-Hertogenbosch, NL 137 529

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