Inspection Methods, Substrates Having Metrology Targets, Lithographic System and Device Manufacturing Method
    2.
    发明申请
    Inspection Methods, Substrates Having Metrology Targets, Lithographic System and Device Manufacturing Method 有权
    检测方法,具有计量目标的基板,平版印刷系统和器件制造方法

    公开(公告)号:US20160327871A1

    公开(公告)日:2016-11-10

    申请号:US15105349

    申请日:2014-11-20

    CPC classification number: G03F7/70625 G03F7/70466 G03F7/70633 G03F7/70683

    Abstract: Disclosed is a method of measuring overlay between upper and lower layers on a substrate using metrology targets formed by a lithographic process. The lithographic process is of a multiple-patterning type whereby first and second distinct populations of structures are formed in a single one of said layers (L1) by respective first and second patterning steps. The metrology target (620) in the single one of said layers comprises a set of structures of which different subsets (642A, 642B) are formed in said first and second patterning steps. An overlay measurement on this target can be used to calculate a combined (average) overlay performance parameter for both of the first and second patterning steps.)

    Abstract translation: 公开了一种使用由光刻工艺形成的测量目标来测量衬底上的上层和下层之间的覆盖层的方法。 光刻工艺是多重图案化形式,其中通过相应的第一和第二图案形成步骤,通过第一和第二不同的结构群体形成在单个所述层(L1)中。 所述层中的一个中的测量目标(620)包括在所述第一和第二图案化步骤中形成不同子集(642A,642B)的一组结构。 可以使用该目标上的覆盖测量来计算第一和第二图案化步骤的组合(平均)叠加性能参数。)

    DEFECT PREDICTION
    7.
    发明申请

    公开(公告)号:US20210150115A1

    公开(公告)日:2021-05-20

    申请号:US16629633

    申请日:2018-06-20

    Abstract: A method including obtaining verified values of a characteristic of a plurality of patterns on a substrate produced by a device manufacturing process; obtaining computed values of the characteristic using a non-probabilistic model; obtaining values of a residue of the non-probabilistic model based on the verified values and the computed values; and obtaining an attribute of a distribution of the residue based on the values of the residue. Also disclosed herein are methods of computing a probability of defects on a substrate produced by the device manufacturing process, and of obtaining an attribute of a distribution of the residue of a non-probabilistic model.

    CONTROL BASED ON PROBABILITY DENSITY FUNCTION OF PARAMETER

    公开(公告)号:US20210080838A1

    公开(公告)日:2021-03-18

    申请号:US16966596

    申请日:2019-01-14

    Abstract: A method for determining adjustment to a patterning process. The method includes obtaining a probability density function of a parameter related to a feature of a substrate subject to the patterning process based on measurements of the parameter, determining an asymmetry of the probability density function, and determining an adjustment to the patterning process based on the asymmetry of the probability density function of the parameter so as to reduce a probability of the feature having a parameter value that falls outside a range between threshold values of the parameter.

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