Lithographic apparatus and device manufacturing method utilizing a large area FPD chuck equipped with encoders an encoder scale calibration method
    4.
    发明授权
    Lithographic apparatus and device manufacturing method utilizing a large area FPD chuck equipped with encoders an encoder scale calibration method 有权
    使用装有编码器的大面积FPD卡盘的光刻设备和器件制造方法进行编码器刻度校准方法

    公开(公告)号:US07408617B2

    公开(公告)日:2008-08-05

    申请号:US11165575

    申请日:2005-06-24

    IPC分类号: G03B27/42

    CPC分类号: G03F7/70291 G03F7/70625

    摘要: A lithographic apparatus comprises an illumination system, an array of individually controllable elements, a substrate table, a projection system, a position encoder, an imaging device, and an image processing unit. The illumination system conditions a radiation beam. The array of individually controllable elements modulates the cross-section of the radiation beam. The substrate table supports a substrate. The projection system projects the modulated radiation beam onto a target portion of the substrate, thereby applying a pattern to the target portion of the substrate. The pattern comprises a first line and a second line. The first line is offset from the second line. The position encoder determines a position of the substrate table. The position encoder comprises a position sensor and a scale. The scale comprises a plurality of lines intended to be straight and parallel to one another. The imaging device obtains an image of the first line and the second line. The image processing unit measures the separation between the first line and the second line in a plurality of locations, and determines the non-uniformity of at least a part of the scale from the plurality of separations.

    摘要翻译: 光刻设备包括照明系统,独立可控元件的阵列,衬底台,投影系统,位置编码器,成像设备和图像处理单元。 照明系统调节辐射束。 独立可控元件的阵列调制辐射束的横截面。 衬底台支撑衬底。 投影系统将调制的辐射束投影到基板的目标部分上,从而将图案施加到基板的目标部分。 该图案包括第一行和第二行。 第一行偏离第二行。 位置编码器确定衬底台的位置。 位置编码器包括位置传感器和秤。 该刻度尺包括多条相互直线并平行的线。 成像装置获得第一行和第二行的图像。 图像处理单元测量多个位置中第一线和第二线之间的间隔,并且从多个分离中确定刻度的至少一部分的不均匀性。

    Stage apparatus, lithographic apparatus and method of positioning an object table
    5.
    发明授权
    Stage apparatus, lithographic apparatus and method of positioning an object table 有权
    平台设备,光刻设备和定位对象表的方法

    公开(公告)号:US09316928B2

    公开(公告)日:2016-04-19

    申请号:US13194791

    申请日:2011-07-29

    摘要: A measurement system configured to measure a position dependent signal of an object table, the measurement system including at least one sensor mountable on the object table and a sensor target object mountable on a substantially stationary frame, and a mounting device configured to mount the sensor target object on the substantially stationary frame, wherein the measurement system further includes a compensator configured to compensate movements and/or deformations of the sensor target object with respect to the substantially stationary frame. The compensator may include a passive or an active damper and/or a feedback position controller. In an alternative embodiment, the compensator includes a gripping device which fixes the position of the sensor target object during a high accuracy movement of the movable object.

    摘要翻译: 一种测量系统,被配置为测量对象台的与位置相关的信号,所述测量系统包括可安装在所述对象台上的至少一个传感器和可安装在基本上固定的框架上的传感器目标对象;以及安装装置,其被配置为安装所述传感器目标 物体在基本上固定的框架上,其中测量系统还包括补偿器,其被配置为补偿传感器目标物体相对于基本上固定的框架的运动和/或变形。 补偿器可以包括无源或主动阻尼器和/或反馈位置控制器。 在替代实施例中,补偿器包括夹持装置,其在可移动物体的高精度运动期间固定传感器目标物体的位置。