Title:
CATHODE STRUCTURE AND PRODUCTION METHOD THEREFOR AND ELECTRON GUN AND CATHODE RAY TUBE
Document Type and Number:
WIPO Patent Application WO/2002/052599
Kind Code:
A1
Abstract:
A cathode electrode (cathode structure) capable of reducing an electron beam spot diameter and a cathode drive voltage, and ensuring an extended stabilization of a cathode current. A cathode electrode which is formed with a non-electron-beam-emitting dent or region (9a) in the vicinity of the center or the outer periphery of the emissive material (9) of the cathode electrode (1) to thereby emit a hollow electron beam (13), and a production method therefor; and an electron gun and a cathode ray tube.
More Like This:
| JP61214325 | IMPREGNATED CATHODE STRUCTURE |
| JP54029965 | INDIRECTLY-HEATED CATHODE FOR ELECTRON TUBE |
| JP53014548 | CATHODE FOR ELECTRONIC TUBE |
Inventors:
Maeda, Makoto c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Asano, Tomohisa c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Kojima, Akihiro c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Yamada, Yoshinori c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Nakadaira, Tadakatsu c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Asano, Tomohisa c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Kojima, Akihiro c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Yamada, Yoshinori c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Nakadaira, Tadakatsu c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Application Number:
PCT/JP2001/011494
Publication Date:
July 04, 2002
Filing Date:
December 26, 2001
Export Citation:
Assignee:
SONY CORPORATION (7-35, Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Maeda, Makoto c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Asano, Tomohisa c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Kojima, Akihiro c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Yamada, Yoshinori c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Nakadaira, Tadakatsu c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Maeda, Makoto c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Asano, Tomohisa c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Kojima, Akihiro c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Yamada, Yoshinori c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
Nakadaira, Tadakatsu c/o Sony Corporation 7-35 (Kitashinagawa 6-chome Shinagawa-ku, Tokyo, 141-0001, JP)
International Classes:
H01J1/20; H01J1/13; H01J1/16; H01J1/26; H01J1/28; H01J9/04; H01J29/04; H01J1/13; H01J1/20; H01J9/04; H01J29/04; (IPC1-7): H01J1/16; H01J1/28; H01J9/04; H01J29/04
Attorney, Agent or Firm:
Matsukuma, Hidemori (Shinjuku Bldg, 8-1 Nishishinjuku 1-chome Shinjuku-ku, Tokyo, 160-0023, JP)
Download PDF:
Previous Patent: VACUUM SELECTOR SWITCH LIGHT-BULB
Next Patent: ELECTRON EMISSION ELEMENT AND FIELD EMISSION DISPLAY USING IT
Next Patent: ELECTRON EMISSION ELEMENT AND FIELD EMISSION DISPLAY USING IT