Patent ID: 7547611
Filing Date: 2009-06-16
Classification: H01L,Y10T

Abstract:
1. Process for bonding at least two substrates ( 1 , 2 ) with a device having a lower pressure plate ( 5 ) for holding the substrates ( 1 , 2 ) and transferring pressure and heat to the substrates ( 1 , 2 ), an upper pressure plate ( 6 ) located opposite the lower pressure plate ( 5 ) for transferring pressure and heat to the substrates ( 1 , 2 ), heating means ( 7 , 8 ) for heating up the substrates ( 1 , 2 ) to temperatures above 100° C., and pressure charging means for charging the lower ( 5 ) and/or upper pressure plate ( 6 ) with a pressing force F higher than 500 N, the upper pressure plate ( 6 ) and/or the lower pressure plate ( 5 ) being substantially free from the chemical elements Ti and Mo at least on one substrate contact surface ( 5 o , 6 o ) facing the substrates, said process comprising the following process steps: a) introduction of the substrates ( b) charging of the substrates ( c) charging of the substrates (