Patent ID: 7276436

Claim:
A method for manufacturing an electronic component module having a semiconductor bear chip packaged on a wiring board, said method including: preparing said wiring board including a wiring pattern, a thermosetting resin film covering an electrode area on said wiring pattern and having insulating particles dispersed and included, and a thermoplastic resin film covering said thermosetting resin film; pressing a bump of the semiconductor bear chip onto the thermoplastic resin film in a melted state where said thermoplastic resin film is heated and softened, while applying an ultrasonic wave, so that the melted thermoplastic resin film is shoved away by said bump of the semiconductor bear chip and that said bump reaches a surface of said thermosetting resin film; pressing said bump against said thermosetting resin film by continually applying said ultrasonic wave to said bump so that said insulating particles are separated from within the thermosetting resin film, the thermosetting resin film is shaved away by said bump, and said bump makes contact with said electrode area; ultrasonically bonding said bump and said electrode area by continually applying said ultrasonic wave in a state where said bump and said electrode area are contacted; and bonding a semiconductor bear chip main body on said wiring board by cooling and solidifying said melted thermoplastic resin.