METHOD FOR CONTROLLING A LITHOGRAPHIC APPARATUS

    公开(公告)号:US20220334500A1

    公开(公告)日:2022-10-20

    申请号:US17636452

    申请日:2020-07-22

    Abstract: A method of determining a control setting for a lithographic apparatus. The method includes obtaining a first correction for a current layer on a current substrate based on first metrology data associated with one or more previous substrates, and obtaining a second correction for the current layer on the current substrate. The second correction is based on a residual determined based on second metrology data associated with a previous layer on the current substrate. The method further includes determining the control setting for the lithographic apparatus for patterning the current layer on the current substrate by combining the first correction and the second correction.

    METHOD AND APPARATUS TO CORRECT FOR PATTERNING PROCESS ERROR

    公开(公告)号:US20180252998A1

    公开(公告)日:2018-09-06

    申请号:US15765489

    申请日:2016-09-27

    Abstract: A method including: determining first error information based on a first measurement and/or simulation result pertaining to a first patterning device in a patterning system; determining second error information based on a second measurement and/or simulation result pertaining to a second patterning device in the patterning system; determining a difference between the first error information and the second error information; and creating modification information for the first patterning device and/or the second patterning device based on the difference between the first error information and the second error information, wherein the difference between the first error information and the second error information is reduced to within a certain range after the first patterning device and/or the second patterning device is modified according to the modification information.

    METHODS OF CONTROLLING A PATTERNING PROCESS, DEVICE MANUFACTURING METHOD, CONTROL SYSTEM FOR A LITHOGRAPHIC APPARATUS AND LITHOGRAPHIC APPARATUS

    公开(公告)号:US20180373162A1

    公开(公告)日:2018-12-27

    申请号:US16061257

    申请日:2016-12-09

    Abstract: Performance measurement targets are used to measure performance of a lithographic process after processing a number of substrates. In a set-up phase, the method selects an alignment mark type and alignment recipe from among a plurality of candidate mark types by reference to expected parameters of the patterning process. After exposing a number of test substrates using the patterning process, a preferred metrology target type and metrology recipe are selected by comparing measured performance (e.g. overlay) of performance of the patterning process measured by a reference technique. Based on the measurements of position measurement marks and performance measurement targets after actual performance of the patterning process, the alignment mark type and/or recipe may be revised, thereby co-optimizing the alignment marks and metrology targets. Alternative run-to-run feedback strategies may also be compared during subsequent operation of the process.

    LITHOGRAPHY SYSTEM AND A MACHINE LEARNING CONTROLLER FOR SUCH A LITHOGRAPHY SYSTEM
    9.
    发明申请
    LITHOGRAPHY SYSTEM AND A MACHINE LEARNING CONTROLLER FOR SUCH A LITHOGRAPHY SYSTEM 有权
    LITHOGRAPHY系统和一台机器学习控制器

    公开(公告)号:US20160170311A1

    公开(公告)日:2016-06-16

    申请号:US14905611

    申请日:2014-08-06

    Abstract: A lithography system configured to apply a pattern to a substrate, the system including a lithography apparatus configured to expose a layer of the substrate according to the pattern, and a machine learning controller configured to control the lithography system to optimize a property of the pattern, the machine learning controller configured to be trained on the basis of a property measured by a metrology unit configured to measure the property of the exposed pattern in the layer and/or a property associated with exposing the pattern onto the substrate, and to correct lithography system drift by adjusting one or more selected from: the lithography apparatus, a track unit configured to apply the layer on the substrate for lithographic exposure, and/or a control unit configured to control an automatic substrate flow among the track unit, the lithography apparatus, and the metrology unit.

    Abstract translation: 一种光刻系统,被配置为将图案应用于基底,所述系统包括被配置为根据图案暴露基底层的光刻设备,以及机器学习控制器,被配置为控制光刻系统以优化图案的特性, 机器学习控制器被配置为基于由测量单元测量的属性来进行训练,所述测量单元被配置成测量所述层中的暴露图案的性质和/或与将图案暴露于衬底相关联的属性,并且修正光刻系统 通过调整选自以下的一个或多个漂移:光刻设备,被配置为将该层施加在用于光刻曝光的基板上的轨道单元和/或控制单元,被配置为控制轨道单元,光刻设备之间的自动衬底流动, 和计量单位。

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