Patent ID: 6509206
Filing Date: 2003-01-21
Classification: H01L,Y10T

Abstract:
A method of manufacturing a semiconductor device having a semiconductor substrate mounted on a circuit board, the method comprising:a step of mounting the semiconductor substrate on the surface of the circuit board such that terminal electrodes of the circuit board oppose electrode pads of the semiconductor substrate; a step of establishing electrical connection between the terminal electrodes and the electrode pads, by means of applying ultrasonic vibration between a first holding tool for holding the circuit board and a second holding tool for holding the semiconductor substrate; and at least one of a step of interposing intermediate material between the first holding tool and the circuit board such that the intermediate material adheres to at least one of the first holding tool and the circuit board, the intermediate material having hardness lower than that of the circuit board and a step of interposing intermediate material between the second holding tool and the semiconductor substrate such that the intermediate material adheres to at least one of the second holding tool and the semiconductor substrate, the intermediate material having hardness lower than that of the semiconductor substrate.