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:
Jul. 30, 2002
Filed:
Oct. 21, 1999
Henning Haffner, Fishkill, NY (US);
Heinz Hoenigschmid, Starnberg, DE;
Donald J. Samuels, Silverthorne, CO (US);
Other;
Abstract
A method, and a system for employing the method, for providing a modified optical proximity correction (OPC) for correcting distortions of pattern lines on a semiconductor circuit wafer. The method comprises producing a mask having one or more pattern regions, and producing the semiconductor circuit wafer from the mask. The pattern regions include one or more non-edge pattern regions located adjacent to other of the non-edge pattern regions on the mask. The pattern regions further include one or more edge pattern regions located at or near an area on the mask not having the other non-edge pattern regions. The edge pattern regions have widths calculated to minimize the variance in dimensions between one or more pattern lines on the semiconductor circuit wafer formed from them and one or more pattern lines on the semiconductor circuit wafer formed from the non-edge pattern regions. The distances between any two of the pattern regions are calculated to minimize the variance in dimensions between the one or more pattern lines formed from the edge pattern regions and the one or more pattern lines formed from the non-edge pattern regions. The above producing step includes producing the semiconductor circuit wafer from the mask having the pattern lines formed from the non-edge pattern regions and having the pattern lines formed from the edge pattern regions, where the pattern lines formed from the non-edge regions are permitted to differ in distances between them.