Invention Grant
US08088539B2 Exposure aligning method and exposure apparatus 有权
曝光对准方法和曝光装置

Exposure aligning method and exposure apparatus
Abstract:
In an exposure aligning method, a first shift amount indicating a shift amount of a lower layer pattern of an exposure target substrate from an origin point position is determined and a second shift amount indicating a shift amount of the lower layer pattern in at lease one past lot which has been processed before said exposure target substrate is processed, from the origin point position is determined. A third shift amount indicating a difference between the first shift amount and the second shift amount is calculated and a first correction value is determined based on the third shift amount. An exposure position of an exposure target pattern is adjusted based on the first correction value.
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