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:
Nov. 30, 2010
Filed:
Oct. 22, 2003
Dimitry Shur, Holon, IL;
Alexander Kadyshevitch, Moddieen, IL;
Dimitry Shur, Holon, IL;
Alexander Kadyshevitch, Moddieen, IL;
Applied Materials Israel, Ltd., Rehovot, IL;
Abstract
A system and method for detecting overlay errors, the method includes (i) directing a primary electron beam to interact with an inspected object; whereas the inspected object comprises a first feature formed on a first layer of the inspected object and a second feature formed on a second layer of the object, wherein the second feature is buried under the first layer and wherein the second feature affects a shape of an area of the first layer; (ii) detecting electrons reflected or scattered from the area of the first layer; and (iii) receiving detection signals from at least one detector and determining overlay errors.