Title:
CARBON NANOTUBE, SUBSTRATE AND ELECTRON EMITTING ELEMENT EQUIPPED THEREWITH, SUBSTRATE FOR CARBON NANOTUBE SYNTHESIS, PROCESS FOR PRODUCING THEM, AND PRODUCTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2007/061078
Kind Code:
A1
Abstract:
In the Raman spectrum of carbon nanotube (64), the Raman scattering intensity in
the vicinity of 1580 cm-1 is the highest. Carbon nanotubes can be grown
on the catalyst microparticles (63) of a substrate composed of conductive substrate
(62) and, superimposed on its surface, catalyst microparticles (63). The catalyst
microparticles (63) consist of cobalt oxide catalyst ultrafine particles.
Electron emitting element (60) structured so as to apply voltage to apical end
(64a) of such carbon nanotube (64) to thereby effect electron emission can realize
lowering of driving voltage and attainment of a current value of such a magnitude
that induces luminescence of commercially available phosphors for low-velocity
electron beam. The electron emitting element (60) needs no gate, so that there
can be realized simplification of the structure of plane emission elements equipped
therewith and cost reduction thereof. The carbon material is not oxidized even
in low-vacuum regions, so that there can be realized easing of panel making, and
prolongation of operating life, as compared with those of light emitting elements
making use of conventional electron emitting elements.
Inventors:
ANDO, Toshihiro (1-2-1 Sengen, Tsukuba-sh, Ibaraki 47, 3050047, JP)
安藤 寿浩 (〒47 茨城県つくば市千現１－２－１ 独立行政法人物質・材料研究機構内 Ibaraki, 3050047, JP)
NAKAGAWA, Kiyoharu (1-2-1 Sengen, Tsukuba-sh, Ibaraki 47, 3050047, JP)
中川 清晴 (〒47 茨城県つくば市千現１－２－１ 独立行政法人物質・材料研究機構内 Ibaraki, 3050047, JP)
安藤 寿浩 (〒47 茨城県つくば市千現１－２－１ 独立行政法人物質・材料研究機構内 Ibaraki, 3050047, JP)
NAKAGAWA, Kiyoharu (1-2-1 Sengen, Tsukuba-sh, Ibaraki 47, 3050047, JP)
中川 清晴 (〒47 茨城県つくば市千現１－２－１ 独立行政法人物質・材料研究機構内 Ibaraki, 3050047, JP)
Application Number:
JP2006/323501
Publication Date:
May 31, 2007
Filing Date:
November 24, 2006
Export Citation:
Assignee:
NATIONAL INSTITUTE FOR MATERIALS SCIENCE (1-2-1, Sengen Tsukuba-sh, Ibaraki 47, 3050047, JP)
独立行政法人物質・材料研究機構 (〒47 茨城県つくば市千現１－２－１ Ibaraki, 3050047, JP)
TOPPAN PRINTING CO., LTD. (1-5-1, Taito Taito-k, Tokyo 16, 1100016, JP)
凸版印刷株式会社 (〒16 東京都台東区台東１－５－１ Tokyo, 1100016, JP)
ANDO, Toshihiro (1-2-1 Sengen, Tsukuba-sh, Ibaraki 47, 3050047, JP)
安藤 寿浩 (〒47 茨城県つくば市千現１－２－１ 独立行政法人物質・材料研究機構内 Ibaraki, 3050047, JP)
独立行政法人物質・材料研究機構 (〒47 茨城県つくば市千現１－２－１ Ibaraki, 3050047, JP)
TOPPAN PRINTING CO., LTD. (1-5-1, Taito Taito-k, Tokyo 16, 1100016, JP)
凸版印刷株式会社 (〒16 東京都台東区台東１－５－１ Tokyo, 1100016, JP)
ANDO, Toshihiro (1-2-1 Sengen, Tsukuba-sh, Ibaraki 47, 3050047, JP)
安藤 寿浩 (〒47 茨城県つくば市千現１－２－１ 独立行政法人物質・材料研究機構内 Ibaraki, 3050047, JP)
International Classes:
B82B3/00; C01B31/02; H01J1/304; H01J9/02
Attorney, Agent or Firm:
HIRAYAMA, Kazuyuki (6th Floor, Shinjukugyoen Bldg. 2-3-10, Shinjuk, Shinjuku-ku Tokyo 22, 1600022, JP)
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