METHOD FOR DIRECT DECOMPOSITION OF STOCHASTIC CONTRIBUTORS

    公开(公告)号:EP3910418A1

    公开(公告)日:2021-11-17

    申请号:EP20174556.9

    申请日:2020-05-14

    Abstract: Described herein is a method for decomposing error contributions from multiple sources to multiple features of a pattern printed on a substrate. The method includes obtaining an image of the pattern on the substrate and obtaining, using the image, a plurality of measurement values (615;620;625) of a feature of the pattern. The measurement values are obtained for different sensor values. Further, the method includes correlating, using a decomposition algorithm (320), each measurement value of the plurality of measurement values to a linear mixture of the error contributions to generate a plurality of linear mixtures of the error contributions, and deriving, from the linear mixtures and using the decomposition algorithm, each of the error contributions (601;602;603).

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