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. 12, 2005
Filed:
Jun. 07, 2002
Tomotaka Ezaki, Ise, JP;
Sashiro Uemura, Ise, JP;
Junko Yotani, Ise, JP;
Hiromu Yamada, Ise, JP;
Takeshi Nagasako, Ise, JP;
Hiroyuki Kurachi, Ise, JP;
Kazunori Tatsuda, Ise, JP;
Yukiharu Seko, Ise, JP;
Tsuyoshi Maesoba, Ise, JP;
Tomotaka Ezaki, Ise, JP;
Sashiro Uemura, Ise, JP;
Junko Yotani, Ise, JP;
Hiromu Yamada, Ise, JP;
Takeshi Nagasako, Ise, JP;
Hiroyuki Kurachi, Ise, JP;
Kazunori Tatsuda, Ise, JP;
Yukiharu Seko, Ise, JP;
Tsuyoshi Maesoba, Ise, JP;
Noritake Co., Ltd., Aichi, JP;
Abstract
Disclosed is an electrode for an electron source, a method for producing the same, and an electronic tube using the same which provide a decreased thickness of an electron emitting source, and an improved current distribution percentage. The electronic tube comprises a substrate, an electron emitting source area formed on the substrate, and a shield area around the electron emitting area. The shield area is formed of a material that does not produce an electron emitting source, when the electron emitting source is produced by a dry method. As a result, if a space between an electron drawing electrode and the electrode for the electron source is narrow, the percentage of anode current increases in the total current, thereby improving the current distribution percentage.