Patent ID: 6336546
Filing Date: 2002-01-08
Classification: H01L,Y10S

Abstract:
In combination with a clean room having a plurality of processing centers for processing wafers, a conveying configuration for transporting the wafers to and in the clean room, the conveying configuration comprising:a main conveying system functioning as a transporting store for the wafers; a plurality of secondary conveying systems branching off from said main conveying system, each of said plurality of secondary conveying systems leading, at a minimum, to one processing center and forms a supply buffer from which a predetermined number of the wafers can be removed and fed to the processing center; and at least one at least one rail-borne load-receiving device for removing and feeding the wafers from said supply buffer to the processing center, said load-receiving device having: a gripper which can be displaced in three directions in space for receiving the wafers; and at least one running rail and a substantially vertically running carrier on which said gripper is fastened, said running carrier having an underside with wheels disposed thereon, said wheels being guided in said at least one running rail.