Title:
電子放出素子、電子放出装置、自発光デバイス、画像表示装置、送風装置、冷却装置、帯電装置、画像形成装置、及び電子線硬化装置
Document Type and Number:
Japanese Patent JP4777448
Kind Code:
B2
Abstract:
The present invention provides an electron emitting element which has good energy efficiency and which is capable of controlling a value of current flowing in an electron acceleration layer and an amount of emitted electrons by adjusting a resistance value of the electron acceleration layer and an amount of generated ballistic electrons. An electron emitting element 1 includes an electron acceleration layer 4 including a fine particle layer containing insulating fine particles. In the electron emitting element 1, Ie=α·R−0.67 where Ie [A/cm2] is electron emission current per unit area during the voltage application and R is element resistance [Ω·cm2] per unit area, the element resistance being obtained by dividing (a) a voltage applied between the electrode substrate 2 and the thin-film electrode 3 during the voltage application by (b) current in element per unit area which current flows between the electrode substrate 2 and the thin-film electrode 3 during the voltage application, and where α is not less than 2.0×10−6, and the electron emission current Ie is not less than 1.0×10−9.
Inventors:
Hiroyuki Hirakawa
Nagaoka Aya
Yasuro Imura
Tadashi Iwamatsu
Nagaoka Aya
Yasuro Imura
Tadashi Iwamatsu
Application Number:
JP2009121460A
Publication Date:
September 21, 2011
Filing Date:
May 19, 2009
Export Citation:
Assignee:
Sharp Corporation
International Classes:
H01J1/312; F25B21/00; G03G15/02; G21K1/00; G21K5/04; H01J31/12; H01J63/06
Domestic Patent References:
| JP2003331712A | ||||
| JP2003173744A | ||||
| JP2006236965A | ||||
| JP2006351524A | ||||
| JP10308166A |
Attorney, Agent or Firm:
Kenzo Hara International Patent Office