Transparent member for shielding electromagnetic waves and method of producing the same
AssigneeGunze Limited
InventorsATSUSHI OKADA, SHIGENORI KIYAMA, TAKESHI YOSHIMI, TOSHIYUKI OKAMOTO, MASANORI YAMAMOTO
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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 mΩ/□.
Claims23
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 mΩ/□.
A transparent member for use as a shield against electromagnetic waves comprising a reticular copper pattern (2P) formed on a transparent sheet (21) and consisting predominantly of copper, the reticular copper pattern having a line wide of 1 to 25 μm and an opening ratio of 56 to 96%.
A transparent member for use as a shield against electromagnetic waves comprising a reticular copper pattern (3P) consisting predominantly of copper and an electrically conductive transparent thin-film layer (32) which are formed over a transparent sheet (31) so as to give a total transmittance of at least 50% to the transparent member.
Dependencies are inferred from the claim text.