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:
May. 08, 2012
Filed:
Jul. 29, 2008
Qi-de Qian, Sant Clara, CA (US);
Qi-De Qian, Sant Clara, CA (US);
Other;
Abstract
We disclose a method for optimizing integrated circuit layout which comprises analyzing constraint relationship among objects in an initial layout; constructing local modifications to the constraint relationship; forming new constraint relationships by combining initial constraint relationships with their local modifications; and producing a new layout by implementing the new constraint relationships. Local modification to constraints provides a framework for bringing detailed local information into the design process in a highly automated manner, which can be applied to a wide range of situations. We disclose preferred embodiments on improving lithography printability, reducing defect susceptibility, and improving circuit performance such as reducing layout variability and leakage.