Abstract: A functional multilayer anisotropic conductive adhesive film, capable of bonding and package 0.18-0.13 micron IC chips and high density COF, includes a monomer layer, a reinforcing layer, a low-temperature, hot-melt resin layer, and a conductive particle layer, successively bonded by coating and drying processes. The monomer layer comprises a copolymer of butyl acrylate, methyl acrylate, glycol acrylate, and tetramethyl butyl peroxy-2-ethyl hexanoate. The reinforcing layer comprises long chain imidazole derivatives. The hot-melt resin layer comprises polymer of tocopheroxyl, novolac epoxy, acrylic rubbers and elastic mixture of acrylic rubbers and styrene-butadiene rubbers. The conductive particle layer comprises conductive particles and micro-encapsulating resin for receiving the conductive particles. Diameter of the conductive particles is selected from the group consisting of 3.00 ?m±0.05, 3.25 ?m±0.05, 3.50 ?m±0.05, 3.75 ?m±0.05 and 4.00 ?m±0.05.