Anisotropic-electroconductive adhesive film

An adhesive film capable of exhibiting anisotropic-electroconductivity by applying pressure or pressure and heat to each of its major surfaces, said film comprising a polymeric adhesive component in the form of a film and electroconductive particles dispersed in the adhesive component in an amount of 0.1 to 10% by volume, said film being formed by cast molding a solution containing the adhesive component, the electroconductive particles and a solvent and thereafter evaporating the solvent, said electroconductive particles having an average particle size of 1 to 10 .mu.m, with a ratio of the minimum particle diameter to the maximum particle diameter of each particle being 0.5 to 1.0, and the thickness of the film being not more than 50 .mu.m, said adhesive film exhibiting a total light transmittance of 40% or more and electroconductivity only in the thickness direction thereof upon the application of pressure or pressure and heat to said major surfaces.