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:
Sep. 13, 2011
Filed:
Apr. 14, 2008
Hong MA, Singapore, SG;
Hong Ma, Singapore, SG;
United Microelectronics Corp., Hsinchu, TW;
Abstract
A method of controlling a result parameter of an IC manufacturing procedure is described. The value of at least one first variable of a process correlated with the result parameter is acquired, and the difference between the predicted value and the target value of the result parameter is calculated from the same using a correlation equation of the first variable and the result parameter. A correcting action is then performed to a subsequent process including at least one second variable correlated with the result parameter, which is based on a correlation equation of the second variable and the result parameter to control the subsequent process and adjust the second variable such that the difference is reduced due to the affect of the second variable to the result parameter. The at least one first variable and the at least one second variable include two or more different physical quantities.