Patent ID: 7665946

Claim:
A transfer chamber for a flat display device manufacturing apparatus, comprising: a robot shaft installed within the transfer chamber; a first robot arm having a first end rotatably coupled to the robot shaft, and a second end rotatably coupled to a first end of a second robot arm; a robot hand rotatably coupled to a second end of the second robot arm, wherein the robot hand is configured to transfer a substrate disposed thereon into and out of the transfer chamber along a transfer path; and a buffer, comprising: a buffer plate, comprising: plurality of buffer pins configured to support a substrate; first, second, third and fourth buffer fingers disposed substantially parallel to each other, with the third and fourth buffer fingers being shorter than the first and fourth buffer fingers; and a connecting bar, wherein the first and fourth buffer fingers are respectively connected to opposite end portions of the connecting bar, and the second and third buffer fingers are connected to the connecting bar at a position inside of the first and fourth buffer fingers; and a driving system that moves first and second ends of the buffer plate up and down.