TRANSPARENT MEMBER FOR SHIELDING ELECTROMAGNETIC WAVES AND METHOD OF PRODUCING THE SAME
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United States of America Patent
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Sep 10, 2002
Grant Date -
Oct 24, 2002
app pub date -
Aug 20, 1999
filing date -
Dec 24, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provode a transparent member for use as a shield against electromagnetic waves characterized in that an electrically conductive reticular pattern is provided on a substrate (1) by forming a thin-film layer (2) of copper or an alloy thereof on the substrate by physical thin film forming means and forming a copper thick-film layer (4) on the thin-film layer by plating means so as to give the member a total transmittance of at least 50%, the reticular pattern having an electric resistivity of up to 200 m.OMEGA./.quadrature..
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