PSM alignment method and device

摘要

The present invention relates to alignment of a writing system and a workpiece. In particular, it relates to alignment to write a second layer pattern on a workpiece that has a first layer pattern, using an SLM. It extends to producing a mask or reticle, and to producing a layer of a device using the mask or reticle. Particular aspects of the present invention are described in the claims, specification and drawings.