ELECTROLYTIC COPPER FOIL, CLEANING FLUID COMPOSITION AND METHOD FOR CLEANING COPPER FOIL
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United States of America Patent
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Apr 24, 2015
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Aug 1, 2013
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Abstract
An electrolytic copper foil includes a copper foil body; and a IIA-group metal adhered to a surface of the copper foil body, wherein a signal strength of the IIA group metal is greater than 0.1% based on a signal strength of copper element as 100% analyzed by a secondary ion mass spectrometer. The present invention also provides a method for cleaning copper foil and a cleaning fluid composition which is used in the cleaning method.
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