A METHOD OF DETERMINING FOCUS CORRECTIONS, LITHOGRAPHIC PROCESSING CELL AND DEVICE MANUFACTURING METHOD
    2.
    发明申请
    A METHOD OF DETERMINING FOCUS CORRECTIONS, LITHOGRAPHIC PROCESSING CELL AND DEVICE MANUFACTURING METHOD 审中-公开
    确定焦点校正的方法,光刻处理单元和器件制造方法

    公开(公告)号:WO2013029957A3

    公开(公告)日:2013-04-25

    申请号:PCT/EP2012065599

    申请日:2012-08-09

    CPC classification number: G03F7/70641 G03F7/70616 G03F7/70625 G03F9/7026

    Abstract: Disclosed is a method of, and associated apparatus for, determining focus corrections for a lithographic projection apparatus. The method comprises: exposing a plurality of global correction fields on a test substrate, each comprising a plurality of global correction marks, and each being exposed with a tilted focus offset across it; measuring a focus dependent characteristic for each of the plurality of global correction marks to determine interfield focus variation information; and calculating interfield focus corrections from said interfield focus variation information.

    Abstract translation: 公开了一种用于确定光刻投影装置的焦点校正的方法和相关联的装置。 该方法包括:将测试基板上的多个全局校正场曝光,每个全局校正场均包括多个全局校正标记,并且每个全局校正场在其上以倾斜的焦点偏移曝光; 测量所述多个全局校正标记中的每一个的聚焦依赖特性,以确定场间焦点变化信息; 以及从所述场间焦点变化信息计算场间焦点校正。

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