Patent ID: 6594546
Filing Date: 2003-07-15
Classification: H01L,Y10S

Abstract:
A plant for processing wafers, comprising:a plurality of units, each one of said plurality of said units including a device selected from the group consisting of a fabrication unit and a measuring unit; and a transport system for transporting the wafers; each respective one of said plurality of said units including a loading and unloading station having at least one loading port for feeding in the wafers, a processing flap for closing said loading port, at least one unloading port for discharging the wafers, and a processing flap for closing said unloading port; each respective one of said plurality of said units including a registration system configured for registering a feeding-in and a discharging of the wafers to and from said respective one of said plurality of said units in order to determine a wafer occupancy in said respective one of said plurality of said units; for each respective one of said plurality of said units, a selected request being generated as a function of the wafer occupancy in said respective one of said plurality of said units, the selected request being selected from the group consisting of a supply request for said respective one of said plurality of said units and a disposal request for said respective one of said plurality of said units; said registration system of each respective one of said plurality of said units having a sensor configuration for registering a number of the wafers that are fed-in to said respective one of said plurality of said units and that are discharged from said respective one of said plurality of said units; said sensor configuration of said registration system of each respective one of said plurality of said units enabling registration of an actuation of said processing flap for closing said loading port of said respective one of said plurality of said units; and said sensor configuration of said registration system of each respective one of said plurality of said units enabling registration of an actuation of said processing flap for closing said unloading port of said respective one of said plurality of said units.