TWI605159B

There is provided a roughened copper foil which can significantly improve adhesion to an insulating resin and reliability (e.g., hygroscopic heat resistance). The roughened copper foil of the present invention has at least one roughened surface having fine irregularities composed of acicular crystal...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TSUYOSHI, HIROAKI, MOGI, SATOSHI
Format: Patent
Sprache:chi
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Beschreibung
Zusammenfassung:There is provided a roughened copper foil which can significantly improve adhesion to an insulating resin and reliability (e.g., hygroscopic heat resistance). The roughened copper foil of the present invention has at least one roughened surface having fine irregularities composed of acicular crystals, wherein the entire surface of the acicular crystals is composed of a mixed phase of Cu metal and Cu2O.