ANISOTROPIC CONDUCTIVE ADHESIVE FILM

PURPOSE: To obtain an anisotropic conductive adhesive film containing a polyimide resin specific in solubility in a prescribed solvent as an adhesive component, capable of being peeled with a solvent capable of being safely used for human bodies and environments, and high in electric connection reli...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KOBAYASHI MASANORI, HOTSUTA YASUNARI, YAMADA YOZO
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PRINTED CIRCUITS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE: To obtain an anisotropic conductive adhesive film containing a polyimide resin specific in solubility in a prescribed solvent as an adhesive component, capable of being peeled with a solvent capable of being safely used for human bodies and environments, and high in electric connection reliability against changes in temperatures in an usage temperature region. CONSTITUTION: In a film comprising a conductive adhesive and particles (e.g. gold-plated resin particles) dispersed in the adhesive, a polyimide resin having a solubility of at least 5g in 100g of an aprotic polar organic solvent, preferably a polyimide resin having structural units of the formula (n is 10-1000; R1 is 2-12C alkyl; R2 is 2-12C alkyl or alicyclic group such as methylene dicyclohexane or isophorone), as the adhesive component. For example, the resin is preferably obtained by reacting a tetracarboxylic acid dianhydride with a diamine at the ordinary temperature and subsequently subjecting the obtained polyamic acid to a dehydrative ring-closing reaction at a high temperature.