摘要:
A method and an apparatus for matching data related to an integrated metrology tool and a standalone metrology tool. At least one semiconductor wafer is processed. An integrated metrology tool and/or a standalone metrology tool is matched based upon a difference between metrology data relating to a processed semiconductor wafer acquired by the integrated metrology tool and metrology data acquired by the standalone metrology tool, using a controller.
摘要:
A method for controlling a process includes determining incoming state information associated with the process. A plurality of control models associated with the process is provided. A confidence metric is determined for each of the control models based on the incoming state information. The one of the plurality of control models having the highest associated confidence metric is selected. A control action for determining at least one parameter in an operating recipe used to implement the process is generated using the selected control model. A system includes a process tool and a process controller. The process tool is configured to process a workpiece in accordance with an operating recipe. The process controller is configured to determine incoming state information associated with processing the workpiece, determine a confidence metric for each of a plurality of control models based on the incoming state information, select the one of the plurality of control models having the highest associated confidence metric, and generate a control action for determining at least one parameter in the operating recipe using the selected control model.
摘要:
A method and an apparatus for performing a process control using partial measurement data. A process operation is performed on a semiconductor wafer. Inline metrology data related to the process of the semiconductor wafer is acquired. A partial measurement data acquisition process is performed based upon the inline metrology data, the partial measurement data acquisition process comprising determining a time period for acquiring the inline metrology data, determining a number of wafers to be sampled based upon the time period, and determining a number of wafer sites for data acquisition. At least one of a feedback adjustment on a second semiconductor wafer and a feed-forward adjustment relating to a subsequent processing of the first semiconductor wafer based upon the partial measurement data acquisition process is performed.
摘要:
A method and an apparatus for selectively applying correction to a process control. Manufacturing data relating to the processing of a workpiece is acquired. The manufacturing data includes metrology data relating to the processed workpiece. An adjustment for at least a first or a second control input parameter is determined based upon the manufacturing data. The first and second control input parameters are organized to isolate the first control input parameter from the second control input parameter for adjusting at least one of the first and the second control input parameters, using a controller.
摘要:
A method and apparatus provided for controlling cumulative wafer effects. The method comprises processing a workpiece, determining a cumulative effect of the processing on the workpiece and comparing the determined cumulative effect to a reference target value. The method further comprises adjusting a downstream process of the workpiece based on comparing the determined cumulative effect to the reference target value.
摘要:
A method and an apparatus for adjusting a process controller based upon a fault detection analysis. A process step upon a workpiece is performed using a processing tool. Manufacturing data relating to processing of the workpiece is acquired. The manufacturing data may include metrology data relating to the processed workpiece and/or tool state data relating to the tool state of a processing tool. A metrology/tool state data integration process is performed based upon the acquired manufacturing data. The metrology/tool state data integration process includes performing an assessment of a tool health related to the processing tool and adjusting an emphasis of the metrology data based upon the assessment of the tool health.
摘要:
The present invention is generally directed to various methods and systems for dynamically adjusting metrology sampling based upon available metrology capacity. In one illustrative embodiment, the method comprises providing a metrology control unit that is adapted to determine a baseline metrology sampling rate for at least one metrology operation, determining available metrology capacity, and providing the determined available metrology capacity to the metrology control unit wherein the metrology control unit determines a new metrology sampling rate based upon the determined available metrology capacity.
摘要:
The present invention is generally directed to various methods and systems for adaptive metrology sampling plans that may be employed to monitor various manufacturing processes. In one example, the method includes creating a plurality of metrology sampling rules, assigning each of the metrology sampling rules a sampling weight value, identifying at least one workpiece that satisfies at least one of the metrology sampling rules, assigning the sampling weight value for each of the satisfied metrology sampling rules with the identified workpieces that satisfy the rules, and indicating a metrology operation should be performed when a cumulative total of the sampling weight values is at least equal to a pre-established trigger value.
摘要:
The present invention provides a method and apparatus for modifying process selectivities based on process state information. The method includes accessing process state information associated with at least one material removal process, determining at least one selectivity based on the process state information, and modifying at least one process parameter of said material removal process based on said at least one determined selectivity.
摘要:
A method includes receiving a current residual vector. The current residual vector is compared to a plurality of historical residual vectors. Each historical residual vector has an associated fault classification code. At least one of the historical residual vectors is selected responsive to determining that the current residual vector matches at least one of the historical residual vectors. A fault condition is classified based on the fault classification code associated with the selected historical residual vector.