Method and system for reducing the overlay error in exposure fields by means of APC control strategies
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By taking into account plant-specific distortion signatures and retikelspezifischer positioning properties in a Justiersteuerungssystem control quality of modern APC strategies can be significantly improved. Corresponding correction data can be on the basis of combinations of system / reticles and layers to adjust to each other, it is determined which can then modify the corresponding set values of Justierparametern which are used for controlling the adjustment process on the basis of standard overlay metrology data from corresponding overlay marks are obtained.