Title:
CARBON NANOTUBE AND METHOD FOR PRODUCING THE SAME, ELECTRON SOURCE AND METHOD FOR PRODUCING THE SAME, AND DISPLAY
Document Type and Number:
WIPO Patent Application WO/2001/062665
Kind Code:
A1
Abstract:
A carbon nanotube has a carbon network film of polycrystalline structure divided into crystal regions along the axis of the tube, and the length along the tube axis of each crystal region preferably ranges from 3 to 6 nm. An electron source includes a carbon nanotube having a cylindrical shape the end of which on the substrate side is closed and disposed in a fine hole. The end on the substrate side of the tube is firmly adhered to the substrate. The carbon nanotube is produced by a method in which carbon is deposited under the condition that no metal catalyst is present in the fine hole and produced by a method in which after the carbon deposition the end of the carbon deposition film is modified by etching the carbon deposition film using a plasma. Therefore, an electron source excellent in the evenness of electron emission characteristics in an electron emission region (pixel) in the device plane and driven with low voltage can be provided, and a display operated with ultralow power consumption and exhibiting ultrahigh luminance can be provided.
Inventors:
Ohki, Hiroshi (3-5-2, Nishioizumi Nerima-ku, Tokyo, 178-0065, JP)
Tsunesada, Tsunaki (5-3-32, Asahi-cho Kashiwa-shi, Chiba, 277-0852, JP)
Urayama, Masao (4-4-22-403, Hikonari Misato-shi, Saitama, 341-0003, JP)
Kyotani, Takashi (3-15-3, Yurigaoka Natori-shi, Miyagi, 981-1245, JP)
Matsui, Keitarou (2-14-11, Mukoyama Taihaku-ku Sendai-shi, Miyagi, 982-0841, JP)
Tomita, Akira (2-21-30, Hitokita Taihaku-ku Sendai-shi, Miyagi, 982-0222, JP)
Tsunesada, Tsunaki (5-3-32, Asahi-cho Kashiwa-shi, Chiba, 277-0852, JP)
Urayama, Masao (4-4-22-403, Hikonari Misato-shi, Saitama, 341-0003, JP)
Kyotani, Takashi (3-15-3, Yurigaoka Natori-shi, Miyagi, 981-1245, JP)
Matsui, Keitarou (2-14-11, Mukoyama Taihaku-ku Sendai-shi, Miyagi, 982-0841, JP)
Tomita, Akira (2-21-30, Hitokita Taihaku-ku Sendai-shi, Miyagi, 982-0222, JP)
Application Number:
PCT/JP2001/001326
Publication Date:
August 30, 2001
Filing Date:
February 22, 2001
Export Citation:
Assignee:
SHARP KABUSHIKI KAISHA (22-22, Nagaike-cho Abeno-ku Osaka-shi, Osaka, 545-8522, JP)
Ohki, Hiroshi (3-5-2, Nishioizumi Nerima-ku, Tokyo, 178-0065, JP)
Tsunesada, Tsunaki (5-3-32, Asahi-cho Kashiwa-shi, Chiba, 277-0852, JP)
Urayama, Masao (4-4-22-403, Hikonari Misato-shi, Saitama, 341-0003, JP)
Kyotani, Takashi (3-15-3, Yurigaoka Natori-shi, Miyagi, 981-1245, JP)
Matsui, Keitarou (2-14-11, Mukoyama Taihaku-ku Sendai-shi, Miyagi, 982-0841, JP)
Tomita, Akira (2-21-30, Hitokita Taihaku-ku Sendai-shi, Miyagi, 982-0222, JP)
Ohki, Hiroshi (3-5-2, Nishioizumi Nerima-ku, Tokyo, 178-0065, JP)
Tsunesada, Tsunaki (5-3-32, Asahi-cho Kashiwa-shi, Chiba, 277-0852, JP)
Urayama, Masao (4-4-22-403, Hikonari Misato-shi, Saitama, 341-0003, JP)
Kyotani, Takashi (3-15-3, Yurigaoka Natori-shi, Miyagi, 981-1245, JP)
Matsui, Keitarou (2-14-11, Mukoyama Taihaku-ku Sendai-shi, Miyagi, 982-0841, JP)
Tomita, Akira (2-21-30, Hitokita Taihaku-ku Sendai-shi, Miyagi, 982-0222, JP)
International Classes:
B82B1/00; B82B3/00; C01B31/02; C23C16/26; H01J1/304; H01J9/02; H01J29/04; H01J31/12; (IPC1-7): C01B31/02; C23C16/26; H01J1/304; H01J9/02; H01J31/12; H01J29/04
Attorney, Agent or Firm:
Hara, Kenzo (HARAKENZO PATENT LAW FIRM Daiwa Minamimorimachi Building 2-6, Tenjinbashi 2-chome Kita Kita-ku Osaka-shi, Osaka, 530-0041, JP)
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