Patent ID: 9741685
Date: 2017-08-22
CPC Classifications: B23K,H01L

Claim:
1. A method for bonding a first silicon part to a second silicon part, comprising: arranging the first silicon part and the second silicon part in direct physical contact on a surface in a thermal insulating structure; controlling pressure in the thermal insulating structure to a predetermined pressure; controlling temperature in the thermal insulating structure to a predetermined temperature using one or more heaters; and bonding the first silicon part and the second silicon part during a process period, the bonding including melting outer surfaces of the first and second silicon parts and allowing capillary forces to draw molten silicon from the outer surfaces of the first and second silicon parts into a gap between the first and second silicon parts, wherein the predetermined temperature is in a temperature range that is greater than or equal to 1335° C. and less than 1414° C.