Anisotropic conductive adhesive compositions

An anisotropic conductive adhesive composition comprising an insulating adhesive component, particles dispersed in said insulating adhesive component and inorganic particles, said anisotropic conductive adhesive composition being characterized in that

• said insulating adhesive component comprises a copolymer of acrylic ester having an alkyl group of 1-4 carbon atoms and a maleimide derivative,
• 5 to 60 parts by weight, based on 100 parts by weight of the copolymer, of a thermosetting resin, and
• 0.05 to 5.0 parts by weight, based on 100 parts by weight of the copolymer, of a coupling agent, and
• said particles are metallic-layer containing particles comprising a core made of resin, a metallic layer covering said core and a resin layer formed from finely divided resin fixed by the dry blending method on the surface of said metallic layer, and
• said inorganic particles have an average particle diameter of not more than 1/10 of the average particle diameter of said metallic-layer containing particles.