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. 21, 2024
Filed:
Nov. 29, 2021
Sharp Kabushiki Kaisha, Sakai, JP;
Shohei Komaru, Sakai, JP;
Katsuhiko Kyuhken, Sakai, JP;
Kohji Shinkawa, Sakai, JP;
Tadashi Iwamatsu, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
An ion generation apparatus according to the present invention includes an electron emission device, an opposite electrode, and a controller, the electron emission device includes a lower electrode, a surface electrode, and an intermediate layer provided between the lower electrode and the surface electrode, the opposite electrode is provided to be opposite to the surface electrode, and the controller is provided to apply a voltage to the surface electrode, the lower electrode, or the opposite electrode such that a potential of the surface electrode becomes higher than a potential of the lower electrode and a potential of the opposite electrode in a positive ion mode.