Electromagnetic wave filter for plasma display panel
First Claim
1. An electromagnetic wave filter for a plasma display panel comprising a transparent substrate, a light transmitting electromagnetic wave shield film coated on one surface thereof, and a resin protective film provided on the electromagnetic wave shield film, wherein said electromagnetic wave shield film is a 7-layered laminate in which a dielectric layer and a metal layer containing silver as the principal ingredient are laminated alternately, with the dielectric layer being the first to be provided on said transparent substrate, said dielectric layer has a refractive index of 1.6 to 2.8 at a wavelength of 550 nm, and said metal layer containing silver as the principal ingredient contains 0.1 atomic % or more and less than 0.5 atomic % of palladium based on silver and has a thickness of 5 to 25 nm, whereby said electromagnetic wave shield film has a sheet resistance of 3 Ω
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or lower and a near infrared transmission of 20% or lower at a wavelength of 850 nm.
1 Assignment
0 Petitions
Accused Products
Abstract
An electromagnetic wave filter for a plasma display panel which is effective in preventing incorrect actions of a remote control of appliances, comprising a transparent substrate, a light transmitting electromagnetic wave shield film, and a resin protective film, wherein the electromagnetic wave shield film is a 7-layered laminate in which a dielectric layer and a metal layer containing silver as the principal ingredient are laminated alternately with the dielectric layer being the first to be provided on the transparent substrate, the dielectric layer has a refractive index of 1.6 to 2.8 at 550 nm, and the metal layer containing silver as the principal ingredient contains 0.1 atomic % or more and less than 0.5 atomic % of palladium based on silver and has a thickness of 5 to 25 nm, whereby the electromagnetic wave shield film has a sheet resistance of 3 Ω/□ or lower and a near infrared transmission of 20% or lower at 850 nm.
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Citations
11 Claims
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1. An electromagnetic wave filter for a plasma display panel comprising a transparent substrate, a light transmitting electromagnetic wave shield film coated on one surface thereof, and a resin protective film provided on the electromagnetic wave shield film, wherein said electromagnetic wave shield film is a 7-layered laminate in which a dielectric layer and a metal layer containing silver as the principal ingredient are laminated alternately, with the dielectric layer being the first to be provided on said transparent substrate, said dielectric layer has a refractive index of 1.6 to 2.8 at a wavelength of 550 nm, and said metal layer containing silver as the principal ingredient contains 0.1 atomic % or more and less than 0.5 atomic % of palladium based on silver and has a thickness of 5 to 25 nm, whereby said electromagnetic wave shield film has a sheet resistance of 3 Ω
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or lower and a near infrared transmission of 20% or lower at a wavelength of 850 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification