Patent ID: 7765682

Claim:
An apparatus for attaching substrates, the apparatus comprising: a main frame; an upper chamber mounted on the main frame that holds an upper substrate; a lower chamber mounted on the main frame that holds a lower substrate; at least one moving device that moves at least one of the upper chamber or lower chamber so that the upper and lower chambers are brought together to form a sealed attaching space therebetween; a vacuum pump that evacuates the sealed attaching space; and at least one fixing device that is attached to a moving portion of the at least one moving device, wherein the at least one fixing device selectively couples the moving portion of the moving device to the main frame, wherein the at least one moving device comprises: a lifting screw that is coupled to a lifting motor; and a lifting table coupled to the lifting screw and in contact with the at least one of the upper chamber or lower chamber, the lifting table transferring a lifting force of the lifting motor to the at least one of the upper chamber or lower chamber through the lifting screw.