Conductive particles, insulating-coated conductive particles, anisotropic conductive adhesive, connection structure and method for producing conductive particles

摘要

Provided is a conductive particle capable of achieving excellent conduction reliability and insulation reliability when used as conductive particles to be mixed with an anisotropic conductive adhesive. The conductive particle 100a includes a composite particle 103 having resin particles 101 and non-conductive inorganic particles 102 disposed on the surface of the resin particles 101 and a metal layer covering the composite particles 103 do. The metal layer has the non-conductive inorganic particles 102 as a nucleus and has protrusions 109 on its outer surface. The non-conductive inorganic particles 102 on the surface in a concentric circle having a diameter that is 1/2 of the diameter of the resin particles 101 are formed by dispersing 40 to 200 non-conductive inorganic particles 102a having a diameter of less than 70 nm , And has 5 or more and 50 or less second non-conductive inorganic particles (102b) having a diameter of 90 nm or more and 150 nm or less.