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Light-transmitting electromagnetic shielding film, optical filter and plasma television

A technology of shielding film and electromagnetic wave, which is applied in the direction of AC plasma display panel, optical/shielding device, magnetic field/electric field shielding, etc. It can solve the problems of high cost, troublesome and complicated manufacturing process, etc., and achieve excellent conductivity and light transmission properties, Excellent electromagnetic wave shielding property, the effect of excellent electromagnetic wave shielding performance

Inactive Publication Date: 2008-03-12
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the problem it faces is that the manufacturing process is cumbersome and complicated, and therefore, the cost is high
Also, it is known that a problem with lattice patterns due to the use of an etching process is that the line width at the intersections is wider than the lines
Furthermore, it has been pointed out that this approach faces the problem of overcoming the ripple

Method used

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  • Light-transmitting electromagnetic shielding film, optical filter and plasma television

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Effect test

preparation example Construction

[0088] [Manufacturing method of light-transmitting electromagnetic wave shielding film]

[0089] The light-transmitting electromagnetic wave shielding film according to the present invention can be prepared by exposing a photosensitive material having a silver halide-containing emulsion layer on a support, and then performing a developing process to form metallic silver portions in the exposed area and the unexposed area, respectively. and light-transmitting parts, if desired, by applying a physical development and / or electroplating process to the metallic silver parts, thereby imparting conductive metal to the metallic silver parts.

[0090] The method of forming the light-transmitting electromagnetic wave-conducting film of the present invention includes the following two modes depending on the photosensitive material used and the developing process.

[0091] (I) A photosensitive silver halide monochrome photosensitive material without a physical development nucleus is subje...

Embodiment 1

[0381] [Preparation of near-infrared shielding film]

[0382] (Preparation of Composition for Shielding Near Infrared Rays)

[0383] Dissolved and mixed 2 parts by weight of IRG-022 (manufactured by NIPPON KAYAKU, melting point: 200°C) in a solvent mixture containing methyl ethyl ketone and toluene (mixing ratio by weight: 50:50), ie, N, N, N' , N'-tetra(p-diethylaminophenyl)-p-benzoquinone-two (immonium) hexafluoroantimonate, used as the diimonium compound of the first near-infrared absorbing dye, 1 weight part EXCOLOR810K ( Produced by NIPPON SHOKUBAI, the ratio of the absorption coefficient of the maximum absorption wavelength to the maximum absorption coefficient at 450 nm, 550 nm, and 620 nm is 10.2, 8.3, and 9.1), used as a phthalocyanine dye as the second near-infrared ray absorbing dye, and 100 Parts by weight of DIANAL BR-80 (manufactured by MITSUBISHI RAYON, glass transition temperature: 105° C.), to obtain a resin composition.

[0384] (Formation of near-infrared ...

Embodiment 2

[0444] (Preparation of optical filter)

[0445] A continuous film of Sample 1-1 as described above was treated with a copper blackening solution to blacken the copper surface. As the blackening solution, a commercially available product COPPER BLACK (manufactured by ISOLATEKAGAKU KENKYUSHO) was used.

[0446] The surface resistivity of this electromagnetic wave shielding film was 0.3Ω / □.

[0447] The visible light transmittance of this electromagnetic wave shielding film was 90%.

[0448] The light-transmitting electromagnetic wave shielding film thus obtained has electromagnetic wave shielding ability and near infrared ray shielding ability (light transmittance of 800-1000 nm rays: 15% or less) without causing practical problems. In addition, this membrane achieves both properties simultaneously in a single membrane.

[0449] The light transmittance was measured using a U-3500 type spectrophotometer (manufactured by HITACHI).

[0450] The resulting film had a metal mesh s...

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Abstract

Disclosed is a light-transmitting electromagnetic shielding film which has both high electromagnetic shielding properties and high infrared blocking properties. Specifically disclosed is a light-transmitting electromagnetic shielding film wherein a metal silver portion and a light-transmitting portion are formed by exposing and developing an emulsion layer which is arranged on a supporting body and contains a silver salt emulsion. This light-transmitting electromagnetic shielding film is characterized by having infrared blocking properties.

Description

technical field [0001] The present invention relates to a light-transmitting electromagnetic wave shielding film capable of shielding electromagnetic waves from displays such as cathode ray tubes (CRTs), plasma display panels (PDPs), liquid crystal displays, electroluminescence (EL) displays or field emission displays (EFDs), microwave ovens, Electromagnetic waves are generated on the front side of electronic devices, printed circuit boards, etc. and have light transmission properties, and optical filters and plasma display panels having such light-transmitting electromagnetic wave shielding films. Background technique [0002] With the recent increase in the use of various electrical equipment and electronic devices, electromagnetic interference (EMI) has increased dramatically. It should be noted that EMI not only causes mechanical failures and obstructions in electrical and electronic devices, but also has adverse effects on the health of workers who operate these devices...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00B32B15/01B32B15/04G06F9/00G09F9/00
CPCC23C18/14H01J11/44C25D5/34H05K9/0096H01J11/10H01J2211/446B32B27/18C23C18/08C23C18/143B32B15/01B32B15/04G09F9/00H05K9/00
Inventor 佐佐木博友
Owner FUJIFILM CORP
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