METAL-CLAD LAMINATE FOR FLEXIBLE ELECTRONIC DEVICES, AND FLEXIBLE ELECTRONIC DEVICE USING SAME

A metal-clad laminate for flexible electronic devices, said metal-clad laminate comprising a metal layer and a polyimide insulating layer that is superposed on one surface of the metal layer and contains one or more polyimide layers, wherein the polyimide insulating layer satisfies the following req...

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Bibliographische Detailangaben
Hauptverfasser: NAKATSUKA, Jun, HIRAISHI, Katsufumi, WANG, Hongyuan, KAWAI, Shouhei, IWASAKI, Toshio
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A metal-clad laminate for flexible electronic devices, said metal-clad laminate comprising a metal layer and a polyimide insulating layer that is superposed on one surface of the metal layer and contains one or more polyimide layers, wherein the polyimide insulating layer satisfies the following requirements: (a) the thickness thereof is within the range of from 3 µm to 25 µm; (b) the thickness ratio thereof to the metal layer is within the range of from 0.1 to 0.5; (c) the thermal expansion coefficient thereof is 25 ppm/K or less; (d) the coefficient of humidity expansion thereof is 30 ppm/% RH or less; (e) the arithmetic mean roughness (Ra) of the exposed surface, which is not in contact with the metal layer, is 1.0 nm or less; and (f) the polyimide that constitutes the polyimide layer having the exposed surface, which is not in contact with the metal layer, is not thermoplastic.