Patent ID: 6394158
Filing Date: 2002-05-28
Classification: B23K,H01L,H05K

Abstract:
A method for the thermal connection of overlapping connecting surfaces of two opposing substrates with contact pairs between the connecting surfaces of the opposing substrates, the method comprising the steps of:providing one of the two substrates as a transparent substrate, the transparent substrate being transparent to laser energy; applying laser energy from a laser emitting device to the connecting surfaces from a rear side of the transparent substrate by angular movements of a swivel mirror device applying laser energy from the laser emitting device separately to each of the contact pairs by angular movements of the swivel mirror device; axially displacing a focusing device in a beam path between the laser emitting device and the contact pairs as a function of the angular movements of the swivel mirror device; and pressing connecting surfaces of the substrates against one another with a pressing device acting upon one of the substrates, the pressing device including a transparent force introduction device and a transparent non compressible deformable volume forming a pressure cushion simulating fluid pressure, the deformable volume being arranged between the transparent force introduction device and a rear side of one of the substrates.