Electromagnetic wave shield film

Provided is an electromagnetic wave shield film having excellent blackness regardless of the constitutive composition of a black layer. An electromagnetic wave shield film 1 is provided on a surface thereof with a protective layer 2. The protective layer 2 has a black protective layer 21. The minimu...

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Bibliographic Details
Main Authors UMEMURA, SHIGEKAZU, NONOGUCHI, KOUTA, ISOBE, OSAMU
Format Patent
LanguageChinese
English
Published 01.04.2023
Subjects
CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
PERFORMING OPERATIONS
PRINTED CIRCUITS
TRANSPORTING
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Summary:Provided is an electromagnetic wave shield film having excellent blackness regardless of the constitutive composition of a black layer. An electromagnetic wave shield film 1 is provided on a surface thereof with a protective layer 2. The protective layer 2 has a black protective layer 21. The minimum autocorrelation length Sal of the surface of the protective layer 2 is 10 [mu]m or less. The developed area ratio Sdr of the interface is 200% or more. The ratio [Sdr/Sal] of the Sdr to the Sal is at least 50. The brightness L* on the protective layer 2 side is preferably 24 or less.
Bibliography:Application Number: TW20220109913