초록 ▼

Apparatus and concomitant method for performing priority based scheduling of wafer processing within a multiple chamber semiconductor wafer processing system (cluster tool). The sequencer assigns priority values to the chambers in a cluster tool, then moves wafers from chamber to chamber in accordan

Apparatus and concomitant method for performing priority based scheduling of wafer processing within a multiple chamber semiconductor wafer processing system (cluster tool). The sequencer assigns priority values to the chambers in a cluster tool, then moves wafers from chamber to chamber in accordance with the assigned priorities. The sequencer is capable of determining the amount of time available before a priority move is to be performed and, if time is sufficient, the sequencer performs a non-priority move while waiting. The sequencer also dynamically varies assigned priorities depending upon the availability of chambers in the tool. Lastly, the sequencer prioritizes the chambers based upon the minimum time required for the robot to move the wafers in a particular stage.

대표청구항 ▼

[ What is claimed is:] [1.] A method for scheduling semiconductor wafers for processing within a multiple chamber, semiconductor wafer processing system having a plurality of chambers, said method comprising:assigning a priority to each chamber in said plurality of chambers;selecting a chamber havin

[ What is claimed is:] [1.] A method for scheduling semiconductor wafers for processing within a multiple chamber, semiconductor wafer processing system having a plurality of chambers, said method comprising:assigning a priority to each chamber in said plurality of chambers;selecting a chamber having a highest priority;moving a wafer from a selected chamber to a target chamber in accordance with the assigned priority of the selected chamber.