Patent ID: 7117059
Filing Date: 2006-10-03
Classification: G05B,Y02P

Abstract:
1. A run-to-run control system for controlling a first tool to perform a first semiconductor process for a plurality of process runs, the run-to-run control system comprising: means for determining whether a set of metrology parameters of the first process is ready; means for receiving a set of tool process parameters of a first process run of the process runs and the set of the metrology parameters when the set of the metrology parameters of the first process run is ready, wherein the set of the metrology parameters characterizes a process performance of the first tool for each process run and the set of the tool process parameters characterizes a process environment during the first semiconductor process performed by the first tool; means for determining and updating a modeling set by applying the set of metrology parameters and the set of the tool process parameters to a multi-variable modeling function; means for determining a set of optimal operation variables for the first tool for a second process run posterior to the first process run by applying at least a control rule to the modeling set; and means for providing the set of optimal operation variables to the first tool for processing the second process run.