A METHOD OF DETERMINING A MEASUREMENT RECIPE AND ASSOCIATED METROLOGY METHODS AND APPARATUSES

    公开(公告)号:US20240111221A1

    公开(公告)日:2024-04-04

    申请号:US18275663

    申请日:2022-01-12

    CPC classification number: G03F7/706841 G03F7/70633 G03F7/706831

    Abstract: A method of determining a measurement recipe for measurement of in-die targets located within one or more die areas of an exposure field. The method includes obtaining first measurement data relating to measurement of a plurality of reference targets and second measurement data relating to measurement of a plurality of in-die targets, the targets having respective different overlay biases and measured using a plurality of different acquisition settings for acquiring the measurement data. One or more machine learning models are trained using the first measurement data to obtain a plurality of candidate measurement recipes, wherein the candidate measurement recipes include a plurality of combinations of a trained machine learned model and a corresponding acquisition setting; and a preferred measurement recipe is determined from the candidate measurement recipes using the second measurement data.

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