The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2013
Filed:
Aug. 05, 2010
Shannon W. Dunn, Altamont, NY (US);
Shannon W. Dunn, Altamont, NY (US);
Tokyo Electron Limited, Tokyo, JP;
Abstract
A method for image pattern recognition in a multi-image patterning scheme is described. The method includes forming a first feature pattern on a substrate using a lithographic process, and forming a second feature pattern on the substrate using the lithographic process. The method further includes forming an inspection alignment mark on the substrate to distinguish the first feature pattern from the second feature pattern. The inspection alignment mark comprises a negative tone pattern having a first alignment structure aligned with at least a portion of the first feature pattern and a second alignment structure aligned with at least a portion of the second feature pattern, wherein the first alignment structure is independent from the second alignment structure.
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