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:
Dec. 19, 2000
Filed:
Mar. 09, 1998
Shigeo Itoh, Mobara, JP;
Takahiro Niiyama, Mobara, JP;
Masaharu Tomita, Mobara, JP;
Yoshitaka Kagawa, Mobara, JP;
Akira Inoue, Mobara, JP;
Junji Itoh, Tsukuba, JP;
Seigo Kanemaru, Tsukuba, JP;
Futaba Denshi Kogyo K.K., Mobara, JP;
Director General Agency of Industrial Science and Technology, Tokyo, JP;
Abstract
A field emission cathode that can uniform the number of electrons emitted from each emitter and can prevent a line defect even when a gate electrode is electrically short-circuited with an emitter. The movement of electrons in a channel formed on the channel forming electrode is controlled by applying a positive voltage to the current control electrode, so that the current supplied from the cathode electrode to the emitter can be controlled. If the emitter is short-circuited with the gate electrode, the increased current density destroys the channel, so that the current supply to the emitter can be stopped.