Patent ID: 8393370
Filing Date: 2013-03-12
Classification: B32B,G02F,Y10T

Abstract:
1. A substrate laminating apparatus comprising: a first chamber including an upper substrate carrying robot arm for carrying in an upper substrate and a lower substrate carrying robot arm for carrying in a lower substrate, in which the upper substrate carrying robot arm is configured to hold a surface of the upper substrate by suction and adsorption, and the lower substrate carrying robot arm is configured to hold a surface of the lower substrate by suction and adsorption; a vacuum pump which changes the first chamber inner condition from atmospheric pressure to medium vacuum; a second chamber including in which the upper table has at least one recess to permit an electrostatic absorption surface of the movable electrostatic adsorption means to become flush with the surface of the upper table, the movable electrostatic adsorption means being configured to move down from the recess of the upper table, pick up an upper substrate by electrostatic adsorption from the upper substrate carrying robot arm in medium vacuum, move up to the recess of the upper table surface to hold the upper substrate by electrostatic adsorption on the upper table surface, in which the holding electrostatic adsorption means is configured to hold the upper substrate by electrostatic adsorption on the upper table surface so when the movable electrostatic adsorption means ascends a holding surface of the upper substrate touches the upper table surface, and after the movable electrostatic adsorption means become flush with the upper table surface, the holding electrostatic absorption means for fixation the upper table is activated to fix the upper substrate on the on the upper table surface, wherein the movable electrostatic adsorption means retain their electrostatic force such that the electrostatic forces of both the movable electrostatic adsorption and the holding electrostatic adsorption means are active at the point in time when the movable electrostatic adsorption means is flush with the upper table surface, and a lower table has a lifting pin for receiving a lower substrate from the lower substrate carrying robot arm and placing it on the lower table surface, and holding means for holding a lower substrate by electrostatic adsorption on the lower table surface, and either of the upper and lower tables moves horizontally to align an upper substrate and a lower substrate and either of the upper and lower tables moves up or down to decrease the spacing between substrates and stick them together to form a substrate laminate; a first gate valve located between the first chamber and the second chamber and connects the first chamber to the second chamber so as to enable transfer of the upper and lower substrates from the first chamber to the second chamber in the medium vacuum; a third chamber including a robot arm for carrying out the substrate laminate from the second chamber into the third chamber in the medium vacuum, and in which the substrate laminate is carried out of the third chamber at atmospheric pressure; measuring means which are located in the first chamber, second chamber and third chamber to measure pressures in the chambers; and control means for controlling the degrees of vacuum in the chambers; a second gate valve is located between the second chamber and the third chamber and connects the second chamber and the third chamber to enable transfer of the substrate laminate from the second chamber to the third chamber in the medium vacuum; and when the first chamber reaches medium vacuum the first gate valve opens, as the first gate valve opens, the upper and lower substrate carrying robot hands are activated to simultaneously carry the upper and lower substrates into the second chamber and to put the upper and lower substrates on to the upper table and lower table respectively in the medium vacuum.