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:
Jan. 10, 1995
Filed:
Nov. 30, 1993
Shigeo Itoh, Mobara, JP;
Teruo Watanabe, Mobara, JP;
Hisashi Nakata, Mobara, JP;
Norio Nishimura, Mobara, JP;
Junji Itoh, Tsukuba, JP;
Seigo Kanemaru, Tsukuba, JP;
Futaba Denshi Kogyo K.K., Mobara, JP;
Agency of Industrial Science and Technology, Tsukuba, JP;
Abstract
A field emission element in which the emitter has rectangular projections at its distal end capable of readily controlling the interval between electrodes in increments as small as sub-microns, in order to reduce the voltage at which the device starts field emission at the required level and to improve emission uniformity. An emitter (2,20), a collector (3,21) and a gate (5,22) are arranged on a substrate (1), which is formed with a recess (4) in proximity to the electrodes (2,3, 20,21) other than the gate (5). The gate (5) is provided in the recess (4).