Patent ID: 7045389

Claim:
A process for producing a semiconductor device to be mounted on a substrate by flip chip bonding comprising electrodes formed on a semiconductor chip, and spherically formed metal balls having a diameter of not greater than 150 micrometers, and adhesive bonded to the electrodes ( 8 ), wherein each electrode ( 8 ) includes a layer of an electrode material ( 5 ) and at least one layer ( 6 , 7 ) laminated to the layer of the electrode material ( 5 ) to avoid deterioration of bonding such that the at least one layer ( 6 , 7 ) has peripheral dimensions substantially the same as or larger than those of the electrode material ( 5 ); said process comprising: adhesive bonding the metal balls to the electrodes with a flux without reflowing the metal balls, whereby the metal balls are only bonded to the electrodes with flux without reflowing, and are physically attached to tops of the electrodes.