Laminated structure for electronic equipment and method of electroless gold plating

A laminated structure for electronic equipment includes a printed circuit board having copper foil, an undercoat plating layer made of tin or silver, formed on the printed circuit board, and a gold plating layer formed on the undercoat plating layer by electroless plating. Tin or silver is a metal w...

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Bibliographische Detailangaben
Hauptverfasser:	TAKEUCHI ISAMU, MORIMITSU MASAAKI
Format:	Patent
Sprache:	eng
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMICAL SURFACE TREATMENT CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS PRINTED CIRCUITS SOLDERING OR UNSOLDERING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A laminated structure for electronic equipment includes a printed circuit board having copper foil, an undercoat plating layer made of tin or silver, formed on the printed circuit board, and a gold plating layer formed on the undercoat plating layer by electroless plating. Tin or silver is a metal which acts as an anticatalyst in electroless plating. After formation of the undercoat plating layer, the printed circuit board is dipped in catalyst-applying treating liquid to inhibit the anticatalyst.