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.:

US 9304412 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 05, 2016

Filed:

Aug. 21, 2008
Applicants:

Yuichi Shibazaki, Kumagaya, JP;

Yuho Kanaya, Kumagaya, JP;

Inventors:

Yuichi Shibazaki, Kumagaya, JP;

Yuho Kanaya, Kumagaya, JP;

Assignee:

NIKON CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 27/52 (2006.01); G03B 27/58 (2006.01); G03F 7/20 (2006.01); G03F 9/00 (2006.01);
U.S. Cl.
CPC ...
G03F 7/7085 (2013.01); G03F 7/70725 (2013.01); G03F 7/70775 (2013.01); G03F 9/7026 (2013.01); G03F 9/7034 (2013.01); G03F 9/7049 (2013.01);
Abstract

A wafer stage is moved while monitoring a position using an X interferometer and a Y interferometer, and a Z position of a Y scale arranged on the wafer stage upper surface is measured using a surface position sensor. In this case, for example, from a difference of measurement results of two surface position sensors, tilt of the Y scale in the Y-axis direction is obtained. By measuring the tilt of the entire surface of a pair of Y scales, two-dimensional unevenness data of the scales are made. By correcting the measurement results of the position surface sensor using the unevenness data, and then using the corrected measurement results, it becomes possible to drive wafer stage WST two-dimensionally with high precision.


Find Patent Forward Citations

Shibazaki, Yuichi. (2016). Movable body drive method and movable body drive system, pattern formation method and apparatus, exposure method and apparatus, device manufacturing method, and measuring method (U.S. Patent No. 9304412). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9304412

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