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    • 5. 发明申请
    • Control system, lithographic projection apparatus, method of controlling a support structure, and a computer program product
    • 控制系统,光刻投影装置,控制支撑结构的方法以及计算机程序产品
    • US20080316460A1
    • 2008-12-25
    • US11812817
    • 2007-06-21
    • Erik Roelof LoopstraEngelbertus Antonius Fransiscus Van Der PaschMarc Wilhelmus Maria Van Der Wijst
    • Erik Roelof LoopstraEngelbertus Antonius Fransiscus Van Der PaschMarc Wilhelmus Maria Van Der Wijst
    • G03B27/58G05B1/06
    • G03F7/709G03F7/70775G03F7/70858G03F9/7096
    • A control system is provided for controlling a support structure in a lithographic apparatus. The control system includes a first measurement system arranged to measure the position of a substrate supported by the support structure, the position being measured in a first coordinate system. The control system further includes a second measurement system for measuring the position of the support structure in a second coordinate system, the first measurement system having a presumed position in the second coordinate system. The control system further comprises a controller configured to control the position of the support structure based on measurements by the second measurement system, to convert the measured position of the substrate into a converted position of the support structure in the second coordinate system, to position the support structure based on the converted position, to receive a position error signal indicative of a difference between the presumed position and an actual position of the first measurement system in the second coordinate system, and to position the support structure in a manner dependent upon the position error signal.
    • 提供了一种用于控制光刻设备中的支撑结构的控制系统。 控制系统包括第一测量系统,其布置成测量由支撑结构支撑的基板的位置,该位置在第一坐标系中被测量。 所述控制系统还包括用于在第二坐标系中测量所述支撑结构的位置的第二测量系统,所述第一测量系统在所述第二坐标系中具有推测位置。 所述控制系统还包括控制器,所述控制器被配置为基于所述第二测量系统的测量来控制所述支撑结构的位置,以将所述基板的测量位置转换成所述支撑结构在所述第二坐标系中的转换位置, 基于转换位置的支撑结构,接收表示第二坐标系中的第一测量系统的推测位置和实际位置之间的差异的位置误差信号,并且以取决于位置的方式定位支撑结构 误差信号。