Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tsutomu Nanataki0
Yukihisa Takeuchi0
Iwao Ohwada0
Takayoshi Akao0
Date of Patent
February 26, 2008
Patent Application Number
10950976
Date Filed
September 27, 2004
Patent Primary Examiner
Patent abstract
An electron emitter has an emitter made of a dielectric material and an upper electrode and a lower electrode for being supplied with a drive voltage for emitting electrons. The upper electrode is disposed on an upper surface of the emitter, and the lower electrode is disposed on a lower surface of the emitter. The upper electrode has a plurality of through regions through which the emitter is exposed. Each of the through regions of the upper electrode has a peripheral portion having a surface facing the emitter and spaced from the emitter.
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