Patent ID: 6565687
Filing Date: 2003-05-20
Classification: H01L

Abstract:
An ultrasonic bonding method arranged to mount a chip device on a resin substrate by performing ultrasonic bonding such that the position of a connecting electrode of the chip device is aligned to the position of a circuit electrode provided for a resin substrate having elastic modulus &egr;r at room temperature and elastic modulus &egr;h, realized when said resin substrate is heated, said ultrasonic bonding method comprising:heating said resin substrate to a temperature at which the ratio of the elastic modulus &egr;r at room temperature and the elastic modulus &egr;h realized after heating satisfies 1>&egr;h/&egr;r&gE;0.5 when said circuit electrode and said connecting electrode are ultrasonic-bonded to each other.