Title:
ELECTRODE, ELECTRON EMISSION ELEMENT AND DEVICE USING IT
Document Type and Number:
WIPO Patent Application WO/2002/097843
Kind Code:
A1
Abstract:
A high−performance electron emission device that can further improve the electron emission characteristics of a conventional spin trapping type cold cathode, carbon nano−tube and carbon nano−fiber, and emit high−brightness electrons at a low voltage is produced to provide it as a key device in a flat panel display, imaging device, electron beam device and microwave travelling wave tube. A semiconductor film having a thickness of up to 50 nm and an electron affinity of up to 4.0 eV is provided in a spin trapping type cold cathode, carbon nano−tube, carbon nano−fiber and metal or semiconductor substrate having irregularities to produce an electron emission device. The above semiconductor film uses either one of a compound of III group atoms of such as aluminum nitride, boron nitride, aluminum&sol boron nitride, aluminum&sol gallium nitride and boron&sol gallium nitride and nitrogen atoms&semi boron&sol carbon nitride&semi and diamond.
Inventors:
Sugino, Takashi (3-4-1-322, Kamishinden Toyonaka-shi, Osaka, 565-0085, JP)
Kusuhara, Masaki c/o KABUSHIKI KAISHA WATANABE SHOKO (2-16 Nihonbashi-Muromachi 4-chom, Chuo-ku Tokyo, 103-0022, JP)
Umeda, Masaru c/o KABUSHIKI KAISHA WATANABE SHOKO (2-16 Nihonbashi-Muromachi 4-chom, Chuo-ku Tokyo, 103-0022, JP)
Kusuhara, Masaki c/o KABUSHIKI KAISHA WATANABE SHOKO (2-16 Nihonbashi-Muromachi 4-chom, Chuo-ku Tokyo, 103-0022, JP)
Umeda, Masaru c/o KABUSHIKI KAISHA WATANABE SHOKO (2-16 Nihonbashi-Muromachi 4-chom, Chuo-ku Tokyo, 103-0022, JP)
Application Number:
PCT/JP2002/005153
Publication Date:
December 05, 2002
Filing Date:
May 28, 2002
Export Citation:
Assignee:
KABUSHIKI KAISHA WATANABE SHOKO (2-16, Nihonbashi-Muromachi 4-chome Chuo-ku, Tokyo, 103-0022, JP)
Sugino, Takashi (3-4-1-322, Kamishinden Toyonaka-shi, Osaka, 565-0085, JP)
Kusuhara, Masaki c/o KABUSHIKI KAISHA WATANABE SHOKO (2-16 Nihonbashi-Muromachi 4-chom, Chuo-ku Tokyo, 103-0022, JP)
Umeda, Masaru c/o KABUSHIKI KAISHA WATANABE SHOKO (2-16 Nihonbashi-Muromachi 4-chom, Chuo-ku Tokyo, 103-0022, JP)
Sugino, Takashi (3-4-1-322, Kamishinden Toyonaka-shi, Osaka, 565-0085, JP)
Kusuhara, Masaki c/o KABUSHIKI KAISHA WATANABE SHOKO (2-16 Nihonbashi-Muromachi 4-chom, Chuo-ku Tokyo, 103-0022, JP)
Umeda, Masaru c/o KABUSHIKI KAISHA WATANABE SHOKO (2-16 Nihonbashi-Muromachi 4-chom, Chuo-ku Tokyo, 103-0022, JP)
International Classes:
H01J1/304; (IPC1-7): H01J1/304
Attorney, Agent or Firm:
Fukumori, Hisao (2F Fuji Building, 5-11 Kudanminami 4-chom, Chiyoda-ku Tokyo, 102-0074, JP)
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