High precision three-dimensional alignment system for lithography, fabrication and inspection
AssigneeInstitute of Materials Research and Engineering
InventorsSam Fong Yau Li, Hou Tee Ng
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AssigneeInstitute of Materials Research and Engineering
InventorsSam Fong Yau Li, Hou Tee Ng
Estimating the term…
The present invention provides a high precision three-dimensional alignment system using SPM techniques and method of using the same. The system comprises a fine distance control unit for the effective three-dimensional micromovement in the nanometer range of a planar object, and proximity detection unit to monitor the alignment process. In the preferred embodiment, the fine distance control unit comprises a set of at least three strategically positioned fine distance control elements which are capable of controlled expansion and contraction in the nanometer range. The most preferred embodiment of the fine distance control element comprises a piezoelectric tube, which crystal size may be varied by varying an applied voltage. This system may be applied to microlithography, in which case the planar object is a scribing tool having a planar base with multiple tips fabricated on one surface.
A high precision microalignment instrument comprising:
A micoralignment method using a high precision microalignment instrument, said instrument having a central control unit;
A product with surface features produced by a method using a microlithography system, said system having a central control unit;
Dependencies are inferred from the claim text.