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:
Feb. 23, 2016
Filed:
Sep. 11, 2013
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Masayuki Jinguuji, Oita, JP;
Kei Hattori, Mie, JP;
Keiji Fujita, Oita, JP;
Takahito Nagamatsu, Oita, JP;
Kabushiki Kaisha Toshiba, Minato-Ku, Tokyo, JP;
Abstract
An ion implantation apparatus according to an embodiment includes an ion implantation unit, a position detection unit, a charge supply unit, a current value detection unit, and a determination unit. The ion implantation unit scans the surface of a substrate with an ion beam containing positively charged ions and implants the ions into the substrate. The position detection unit detects the scan position of the ion beam on the substrate. The charge supply unit generates a plasma, emits electrons contained in the plasma, and supplies the electrons to the substrate. The current value detection unit detects a current value that changes in accordance with the amount of electrons emitted by the charge supply unit. The determination unit determines the charge build-up state of the substrate based on a change in the current value, the change being accompanied by a change in the scan position.