Patent ID: 8293141

Claim:
An electronic device comprising: (a) an electronic circuit structure, which is a multilayer printed circuit structure of a plurality of planes; and (b) a vertical interconnection between the planes, wherein the vertical interconnection is filled with an electrically conductive adhesive, comprising: (i) an adhesive vehicle, having 100% solids content, comprising (1) at least one melt-processable reactive resin in an amount of about 1 weight % to about 20 weight % based on the total weight of the vehicle, comprised of a combination of at least one thermoplastic resin and at least one thermosetting resin, (2) at least one reactive diluent in an amount of about 1 weight % to about 20 weight %, (3) at least one rheological additive in an amount of about 0.5 weight % to about 5 weight %, (4) at least one curing agent in an amount of about 0.5 weight % to about 5 weight %, and (5) at least one organic acid catalyst in an amount of about 0.0001 weight % to about 2 weight %; and (ii) spherically shaped uncoated copper particles having an average particle diameter about 1 μm to 5 μm in an amount of at least 80 weight % based on the total weight of the electrically conductive adhesive.