发明申请
US20050254030A1 Alignment system and method and device manufactured thereby 有权
对准系统及其制造方法和装置

Alignment system and method and device manufactured thereby
摘要:
An arrangement for and a method of automatically selecting substrate alignment marks on a substrate in a lithographic apparatus or overlay metrology targets in an overlay metrology apparatus. The apparatus has a processor and a memory connected to the processor. The memory stores locations of one or more sets of substrate alignment marks or overlay metrology targets available for selection and selection rules to select suitable substrate alignment marks or overlay metrology targets from this at least one set. The selection rules are based on experimental or theoretical knowledge about which substrate alignment mark or overlay metrology targets locations are optimal in dependence on one or more selection criteria.
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