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:
Apr. 27, 2010
Filed:
Aug. 11, 2006
Tetsuya Hatai, Hukuyama, JP;
Tetsuya Hatai, Hukuyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An exposure operation evaluation method for an exposure apparatus for arranging a predetermined number of at least one evaluation pattern in an overlapping area and printing the at least one evaluation pattern on a substrate when performing a plurality of exposures and printing on the substrate while sequentially step-moving an exposure area in quadrangle, the exposure area having evaluation patterns arranged on an outer peripheral side of a circuit pattern, the overlapping area overlapping respective exposure areas adjacent to four sides of the exposure area, the method including: measuring a printing misalignment between each evaluation pattern of adjacent exposure areas printed on the substrate; and calculating a plurality of linear components in an exposure operation of the exposure apparatus based on the result of the measurement of the printing misalignment and suppressing and controlling the printing misalignment based on the plurality of linear components.