METHODS FOR GENERATING CHARACTERISTIC PATTERN AND TRAINING MACHINE LEARNING MODEL

    公开(公告)号:WO2020078762A1

    公开(公告)日:2020-04-23

    申请号:PCT/EP2019/077146

    申请日:2019-10-08

    Abstract: A method of generating a characteristic pattern for a patterning process and training a machine learning model. The method for generating the characteristic pattern includes obtaining a trained generator model configured to generate a characteristic pattern (e.g., hot spot pattern), and an input pattern; and generating, via simulation of the trained generator model (e.g., CNN), the characteristic pattern based on the input pattern, wherein the input pattern is at least one of a random vector, a class of pattern.

    METHOD TO LABEL SUBSTRATES BASED ON PROCESS PARAMETERS

    公开(公告)号:WO2019149562A1

    公开(公告)日:2019-08-08

    申请号:PCT/EP2019/051424

    申请日:2019-01-22

    Abstract: Substrates to be processed (402) are partitioned based on pre-processing data (404) that is associated with substrates before a process step. The data is partitioned using a partition rule (410, 412, 414) and the substrates are partitioned into subsets (G1-G4) in accordance with subsets of the data obtained by the partitioning. Corrections (COR1-COR4) are applied, specific to each subset. The partition rule is obtained (Fig 5) using decision tree analysis on a training set of substrates (502). The decision tree analysis uses pre-processing data (256, 260) associated with the training substrates before they were processed, and post-processing data (262) associated with the training substrates after being subject to the process step. The partition rule (506) that defines the decision tree is selected from a plurality of partition rules (512) based on a characteristic of subsets of the post-processing data. The associated corrections (508) are obtained implicitly at the same time.

    IDENTIFICATION OF HOT SPOTS OR DEFECTS BY MACHINE LEARNING
    16.
    发明申请
    IDENTIFICATION OF HOT SPOTS OR DEFECTS BY MACHINE LEARNING 审中-公开
    机器学习识别热点或缺陷

    公开(公告)号:WO2017194281A1

    公开(公告)日:2017-11-16

    申请号:PCT/EP2017/059328

    申请日:2017-04-20

    Abstract: Disclosed herein are various methods of identifying a hot spot from a design layout or of predicting whether a pattern in a design layout is defective, using a machine learning model. An example method disclosed herein includes obtaining sets of characteristics of performance of hot spots, respectively, under a plurality of process conditions, respectively, in a device manufacturing process; determining, for each of the process conditions, for each of the hot spots, based on the characteristics under that process condition, whether that hot spot is defective; obtaining characteristics of each of the process conditions; obtaining characteristics of each of the hot spots; and training a machine learning model using a training set comprising the characteristics of one of the process conditions, the characteristics of one of the hot spots, and whether that hot spot is defective under that process condition.

    Abstract translation: 这里公开了使用机器学习模型从设计布局识别热点或预测设计布局中的模式是否有缺陷的各种方法。 本文公开的示例方法包括分别在设备制造过程中的多个过程条件下分别获得热点性能的特征组; 基于在该处理条件下的特性,针对每个处理条件确定每个热点的热点是否有缺陷; 获得每个工艺条件的特性; 获得每个热点的特征; 并且使用训练集训练机器学习模型,所述训练集包括过程条件之一的特征,其中一个热点的特征以及在该过程条件下该热点是否有缺陷。

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