发明申请
US20070058152A1 Method of calibrating a lithographic apparatus and device manufacturing method 有权
校准光刻设备的方法和器件制造方法

Method of calibrating a lithographic apparatus and device manufacturing method
摘要:
In calibration of overlay performance of an immersion lithographic apparatus, two sets of overlay data are obtained from exposures carried out using normal and reversed meanders. The two data sets can then be used to eliminate effects due to wafer cooling.
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