Photocuring anisotropic conductive film and preparation method thereof

The invention discloses a photocuring anisotropic conductive film, comprising a plastic film base material and an anisotropic conductive rubber layer, wherein the anisotropic conductive rubber layer is formed by coating photocuring anisotropic conductive rubber on the plastic film base material and drying by hot air. The photocuring anisotropic conductive rubber comprises the following components in percentage by mass: 5%-11% of a single functional photocuring active monomer, 6%-12% of a multifunctional photocuring active monomer, 10%-15% of photocuring resin, 5%-8% of a photoinitiator, 30%-49% of film-forming resin, 10%-20% of an elastomer, 8%-16% of insulating nanoparticles, 3%-12% of conductive particles, 1.0%-3.0% of a flatting agent, 2%-5% of a coupling agent and 0.02%-0.05% of a polymerization inhibitor. The photocuring anisotropic conductive film prepared by the method is especially suitable for bonding between transparent conducive substrates (for example, an optical conductive film and conductive glass) and flexible circuit boards.