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:
Mar. 01, 2011
Filed:
Oct. 19, 2007
Megumi Jyousaka, Koshi, JP;
Shinichi Shinozuka, Koshi, JP;
Kunie Ogata, Kikuchi-gun, JP;
Tokyo Electron Limited, Tokyo, JP;
Abstract
In the present invention, a thermal plate of a heating unit is divided into a plurality of thermal plate regions, and a temperature can be set for each of the thermal plate regions. A temperature correction value for adjusting a temperature within the thermal plate can be set for each of the thermal plate regions of the thermal plate. The line widths within the substrate which has been subjected to a photolithography process are measured, and, from an in-plane tendency of the measured line widths, an in-plane tendency improvable by temperature correction and an unimprovable in-plane tendency are calculated using a Zernike polynomial. An average remaining tendency of the improvable in-plane tendency after improvement obtained in advance is added to the unimprovable in-plane tendency to estimate an in-plane tendency of the line widths within the substrate after change of temperature setting.