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. 19, 2016
Filed:
Feb. 06, 2015
Varian Semiconductor Equipment Associates, Inc., Gloucester, MA (US);
Shengwu Chang, South Hamilton, MA (US);
Kristen S. Rounds, Rowley, MA (US);
William Leavitt, Haverhill, MA (US);
Michael St. Peter, Gloucester, MA (US);
Varian Semiconductor Equipment Associates, Inc., Gloucester, MA (US);
Abstract
An apparatus to control an ion beam for treating a substrate. The apparatus may include a fixed electrode configured to conduct the ion beam through a fixed electrode aperture and to apply a fixed electrode potential to the ion beam, a ground electrode assembly disposed downstream of the fixed electrode. The ground electrode assembly may include a base and a ground electrode disposed adjacent the fixed electrode and configured to conduct the ion beam through a ground electrode aperture, the ground electrode being reversibly movable along a first axis with respect to the fixed electrode between a first position and a second position, wherein a beam current of the ion beam at the substrate varies when the ground electrode moves between the first position and second position.