Method and apparatus for calibrating a metrology tool

Data processing: measuring – calibrating – or testing – Calibration or correction system – Sensor or transducer

Reexamination Certificate

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Details

C702S097000, C356S237200, C356S401000, C356S328000, C324S765010, C430S022000, C430S030000, C257S005000, C703S013000, C716S030000

Reexamination Certificate

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06850858

ABSTRACT:
A method and apparatus for calibrating a metrology tool are disclosed. The method includes measuring a parameter of a contrast enhanced feature on an artifact using a metrology tool, where the contrast enhanced feature reduces random errors in the metrology tool during the measuring process. The measured parameter is compared with an initial parameter associated with the artifact and the metrology tool is adjusted until the measured parameter matches the initial parameter.

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