Patent ID: 8356406

Claim:
A method of manufacturing an electronic device, comprising: roughening an underside surface of a film made of a resin material, which is opposite to a mounting surface of the film, the mounting surface being a surface on which a circuit chip is to be mounted; forming a conductor pattern on the mounting surface of the film, thereby obtaining a substrate made of the film on which the conductor pattern is formed; attaching a thermoset adhesive to a surface of the substrate, on which surface the conductor pattern is formed; mounting the circuit chip to be connected to the conductor pattern on the substrate via the thermoset adhesive; clamping the substrate by a heating apparatus having a presser section and a support section for heating the thermoset adhesive, such that the presser section abuts on the circuit chip mounted on the substrate and the support section abuts on the underside surface of the film roughened in the roughening; and fixing the circuit chip to the conductor pattern by heating and hardening the thermoset adhesive using the heating apparatus, wherein the support section has a surface abutting on the film and being coarser than the film prior to being roughened in the roughening so that frictional force against the film is increased by the roughening.