Patent ID: 7896046

Claim:
An apparatus for bonding substrates, comprising: a first chamber having a first surface plate upon which a first substrate can be mounted; a second chamber mounted opposite the first chamber, the second chamber having a second surface plate upon which a second substrate can be mounted; and an alignment unit installed in at least one of the first chamber and the second chamber, wherein the alignment unit can adjust a position of a surface plate of the chamber in which it is mounted via a six-degrees-of-freedom alignment procedure, wherein the alignment unit comprises: a connector plate coupled to a surface plate of the chamber in which it is mounted, wherein the connector plate can be displaced during the six-degrees-of-freedom alignment procedure, a support plate, and a plurality of actuators installed between the connector plate and the support plate, wherein a first end of each of the actuators is pivotally coupled to the connector plate, and wherein a second end of each of the actuators is pivotally coupled to the support plate.