Fabrication tool for bonding

摘要

A fabrication tool presses a first device surface against a second device surface after the first and the second device surfaces have been plasma activated, to bond the first device surface with the second device surface. The fabrication tool includes a bonding piston to exert force on the first device surface to press the first device surface against the second device surface. The fabrication tool also includes a pressure plate situated between the bonding piston and the first device surface. The fabrication tool further includes a mechanism to ensure that the force exerted by the bonding piston on the first device surface via the pressure plate is initially exerted at one or more first locations on the first device surface and subsequently exerted at one or more second locations on the first device surface.