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:
Apr. 28, 2020
Filed:
Jul. 12, 2018
Synopsys, Inc., Mountain View, CA (US);
Qiliang Yan, Portland, OR (US);
Synopsys, Inc., Mountain View, CA (US);
Abstract
A two-dimensional representation of a polygon is converted to a parametric representation. A smoothing filter is applied to the parametric representation to produce corner rounding. In some embodiments, a polygon layout plus a model that specifies how much corner rounding should be applied are taken as inputs. The desired amount of rounding to the corners in the input polygons is applied and this produces a new polygon layout with corners that are properly rounded as its output. The process can be implemented so that it does not induce any pattern-size dependent bias. It also can be designed so that it does not induce line-end pullbacks. However, this feature can be turned off if line-end pullbacks are deemed appropriate for the specific application.