Patent ID: 7255147
Filing Date: 2007-08-14
Classification: B32B,G02F,G03G

Abstract:
1. A bonding device for fabricating a liquid crystal display, comprising: a vacuum chamber; an upper stage and a lower stage within the vacuum chamber, the upper and lower stages for respectively attaching first and second substrates; a stage moving system moving at least one of the upper and lower stages; a plurality of first observation holes formed through regions of the upper stage, wherein the first observation holes include at least two perimeter holes located at an outer perimeter of the upper stage and at least one inner hole located inside the outer perimeter of the upper stage; a plurality of second observation holes formed through an upper portion of the vacuum chamber, each aligned to one of the plurality of first observation holes; and a plurality of alignment cameras, each camera aligned with the each of the first and second observation holes.