Patent ID: 6580955
Filing Date: 2003-06-17
Classification: G06Q,H01L,Y10S,Y10T

Abstract:
A computer-implemented method for transferring one or more wafers in a wafer processing facility having a plurality of process chambers for implementing one or more processes, wherein each wafer has associated with at least one of a processing history and processing recipe, the method comprising the steps of:(1) receiving, in the wafer processing facility, a plurality of wafers, each wafer being associated with one of a plurality of priority levels according to at least one of the processing history and processing recipe of each respective wafer; (2) identifying which of the plurality of wafers, of those wafers located in a process chamber, has a highest priority level; (3) identifying, where more than one wafer has been assigned said highest priority level, which of said more than one wafer is to be transferred first; and (4) initiating a wafer transfer for the wafer identified prior to the current step.