Patent ID: 9142532
Filing Date: 2015-09-22
Classification: B23K,H01L

Abstract:
1. A method for bonding plural chips each having a chip-side-bond-surface having one or more metal regions to a substrate having plural bond portions, the method comprising: causing particles having a predetermined kinetic energy to collide with at least the metal region(s) of the chip-side-bond-surface to subject the metal region(s) to surface activating treatment, and further causing water to adhere onto the metal region(s) to subject the metal region(s) to hydrophilizing treatment, causing particles having a predetermined kinetic energy to collide with the bond portions of the substrate to subject the bond portions to surface activating treatment, and further causing water to adhere onto the bond portions to subject the bond portions to hydrophilizing treatment, fitting each of the chips subjected to the surface activating treatment and the hydrophilizing treatment onto the corresponding bond portion of the substrate subjected to the surface activating treatment and the hydrophilizing treatment to bring the metal region(s) of the chip into contact with the bond portion of the substrate, to obtain a resultant structure comprising the substrate and the chips fitted onto the substrate, and heating the resultant structure.