Insulation-coated conductive particle

Details Insulation-coated conductive particle Insulation-coated conductive particle

2004-06-09

2010-12-07

Kopec, Mark (Department: 1796)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

C428S403000, C252S500000

Reexamination Certificate

active

07846547

ABSTRACT:
To provide both an excellent solvent-resistance and a conduction reliability to an insulation coated conductive particle that is suitable for use as a conductive particle in an anisotropic conductive adhesive, the insulation coated conductive particle is configured such that the surface of a conductive particle is coated with an insulating resin layer formed of an insulating resin having a carboxyl group, and the insulating resin layer is surface-treated with a polyfunctional aziridine compound. Examples of the aziridine compound include trimethylolpropane-tri-β-aziridinylpropionate, tetramethylolmethane-tri-β-aziridinylpropionate, and N,N-hexamethylene-1, 6-bis-1-aziridinecarboxamide. The insulating resin layer is preferably composed of an insulating resin having an acrylic acid monomer unit or a methacrylic acid monomer unit. Specifically, the preferable insulating resin is an acrylic acid-styrene copolymer.

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Encyclopedia of Chemical Technology, vol. 13, pp. 142 to 166 (1984).
Motohide Takechi, “Iho Dodensei Film Ni Yoru Flip Chip Jisso Gijutsu,” Denshi Zairyo, 2001 Nen 5 Gtasugo Bessatsu, pp. 130-133.

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