Measuring method, apparatus and substrate

    公开(公告)号:US10151987B2

    公开(公告)日:2018-12-11

    申请号:US13306668

    申请日:2011-11-29

    摘要: A pattern formed on a substrate includes first and second sub-patterns positioned adjacent one another and having respective first and second periodicities. The pattern is observed to obtain a combined signal which includes a beat component having a third periodicity at a frequency lower than that of the first and second periodicities. A measurement of performance of the lithographic process is determined by reference to a phase of the beat component. Depending how the sub-patterns are formed, the performance parameter might be critical dimension (CD) or overlay, for example. For CD measurement, one of the sub-patterns may comprise marks each having of a portion sub-divided by product-like features. The measurement can be made using an existing alignment sensor of a lithographic apparatus. Sensitivity and accuracy of the measurement can be adjusted by selection of the first and second periodicities, and hence the third periodicity.

    Substrate table with windows, method of measuring a position of a substrate and a lithographic apparatus
    3.
    发明授权
    Substrate table with windows, method of measuring a position of a substrate and a lithographic apparatus 失效
    具有窗的基板,测量基板的位置的方法和光刻设备

    公开(公告)号:US07463337B2

    公开(公告)日:2008-12-09

    申请号:US11321467

    申请日:2005-12-30

    IPC分类号: G03B27/58

    摘要: A substrate table is provided with an optical system that includes a first window and a second window arranged to allow radiation to pass into an optical arm. At least two mirrors are provided within the optical arm and are arranged to reflect radiation that is passed through the windows. At least two lenses are positioned to receive radiation reflected from the mirrors, wherein the first window is provided with a first alignment mark and the at least two mirrors and at least two lenses are arranged to form an image of the first alignment mark at the second window. A second alignment mark is provided in the second window, or in the substrate table at a location adjacent to the second window.

    摘要翻译: 衬底台设置有光学系统,该光学系统包括第一窗口和布置成允许辐射进入光学臂的第二窗口。 至少两个反射镜设置在光学臂内,并被布置成反射穿过窗户的辐射。 至少两个透镜被定位成接收从反射镜反射的辐射,其中第一窗口设置有第一对准标记,并且至少两个反射镜和至少两个透镜被布置成在第二个第二对准标记处形成第一对准标记的图像 窗口。 第二对准标记设置在第二窗口中,或者在与第二窗口相邻的位置处的衬底台中。

    Alignment of substrates for bonding
    7.
    发明授权
    Alignment of substrates for bonding 有权
    用于接合的基板的对准

    公开(公告)号:US07433038B2

    公开(公告)日:2008-10-07

    申请号:US11412112

    申请日:2006-04-27

    IPC分类号: G01B11/00 H01L21/30

    摘要: An alignment apparatus for a substrate bonding system is provided with a first optical arm arranged to direct onto a detector radiation from a first alignment mark on a first substrate, and a second optical arm arranged to direct onto the detector radiation from a second alignment mark on a second substrate. The first alignment mark has a known location relative to a functional pattern provided on an opposite side of the first substrate, and the second alignment mark has a known location relative to a functional pattern provided on an opposite side of the second substrate. The substrate bonding system can be further provided with first and second substrate tables arranged to hold the first and second substrates such that they face one another, at least one of the substrate tables being movable in response to a signal output from the detector, thereby allowing the first and second substrates to be aligned with respect to each other for bonding.

    摘要翻译: 用于基板接合系统的对准装置设置有第一光学臂,布置成将第一对准标记上的检测器辐射引导到第一基板上,第二光臂布置成将检测器辐射从第二对准标记 第二基板。 第一对准标记具有相对于设置在第一基板的相对侧上的功能图案的已知位置,并且第二对准标记相对于设置在第二基板的相对侧上的功能图案具有已知位置。 衬底接合系统还可以设置有第一和第二衬底台,布置成保持第一和第二衬底使得它们彼此面对,至少一个衬底台可响应于从检测器输出的信号而可移动,从而允许 第一和第二基板相对于彼此对准以进行接合。

    Lithographic apparatus and device manufacturing method to determine improved absolute position of exposure fields using mark structures
    8.
    发明授权
    Lithographic apparatus and device manufacturing method to determine improved absolute position of exposure fields using mark structures 有权
    使用标记结构确定改善的曝光场绝对位置的光刻设备和器件制造方法

    公开(公告)号:US08908152B2

    公开(公告)日:2014-12-09

    申请号:US12621143

    申请日:2009-11-18

    IPC分类号: G03B27/32 G03F9/00

    摘要: A method for manufacturing a device includes providing a substrate, the substrate including a plurality of exposure fields, each exposure field including one or more target portions and at least one mark structure, the mark structure being arranged as positional mark for the exposure field; scanning and measuring the mark of each exposure field to obtain alignment information for the respective exposure field; determining an absolute position of each exposure field from the alignment information for the respective exposure field; determining a relative position of each exposure field with respect to at least one other exposure field by use of additional information on the relative parameters of the exposure field and the at least one other exposure field relative to each other; and combining the absolute positions and the determined relative positions into improved absolute positions for each of the plurality of exposure fields.

    摘要翻译: 一种制造器件的方法包括:提供衬底,所述衬底包括多个曝光场,每个曝光场包括一个或多个目标部分和至少一个标记结构,所述标记结构被布置为所述曝光场的位置标记; 扫描和测量每个曝光场的标记以获得相应曝光场的对准信息; 根据相应曝光场的对准信息确定每个曝光场的绝对位置; 通过使用关于相对于彼此的曝光场和至少一个其他曝光场的相对参数的附加信息来确定每个曝光场相对于至少一个其它曝光场的相对位置; 以及将所述绝对位置和所确定的相对位置组合为所述多个曝光场中的每一个的改进的绝对位置。

    Alignment system and alignment marks for use therewith
    9.
    发明授权
    Alignment system and alignment marks for use therewith 有权
    对准系统和对准标记

    公开(公告)号:US08208140B2

    公开(公告)日:2012-06-26

    申请号:US12718485

    申请日:2010-03-05

    IPC分类号: G01B11/00

    摘要: A lithographic apparatus according to one embodiment of the invention includes an alignment system for aligning a substrate or a reticle. The alignment system includes a radiation source configured to illuminate an alignment mark on the substrate or on the reticle, the alignment mark comprising a maximum length sequence or a multi periodic coarse alignment mark. An alignment signal produced from the alignment mark is detected by a detection system. A processor determines an alignment position of the substrate or the reticle based on the alignment signal.

    摘要翻译: 根据本发明的一个实施例的光刻设备包括用于对准衬底或掩模版的对准系统。 对准系统包括被配置为照亮衬底或掩模版上的对准标记的辐射源,对准标记包括最大长度序列或多周期性粗略对准标记。 由对准标记产生的对准信号由检测系统检测。 处理器基于对准信号确定基板或掩模版的对准位置。

    Alignment mark and a method of aligning a substrate comprising such an alignment mark
    10.
    发明授权
    Alignment mark and a method of aligning a substrate comprising such an alignment mark 有权
    对准标记和对准包括这种对准标记的基板的方法

    公开(公告)号:US08208121B2

    公开(公告)日:2012-06-26

    申请号:US12363320

    申请日:2009-01-30

    IPC分类号: G03B27/42 G03B27/58

    CPC分类号: G03B27/32 G03F9/7076

    摘要: An alignment mark comprising a periodic structure formed by mark lines is described. In an embodiment, the alignment mark is formed in a scribe lane of a substrate, the scribe lane extending in a scribe lane direction. The alignment mark includes: a first area including a first periodic structure formed by first mark lines extending in a first direction, the first direction being at a first angle α with respect to the scribe lane direction: 0°

    摘要翻译: 描述包括由标记线形成的周期性结构的对准标记。 在一个实施例中,对准标记形成在基板的划线中,刻划线在划线方向延伸。 对准标记包括:第一区域,包括由第一方向延伸的第一标记线形成的第一周期性结构,第一方向相对于划线方向为第一角度α:0°<α<90°, 第二区域包括由沿第二方向延伸的第二标记线形成的第二周期性结构,第二方向为第二角度&amp; bgr; 相对于划线方向:-90°&nlE;&bgr; <0°。