DE3660878D1 - Cathode for electron tube and manufacturing method thereof - Google Patents

Cathode for electron tube and manufacturing method thereof

Info

Publication number
DE3660878D1
DE3660878D1 DE8686303959T DE3660878T DE3660878D1 DE 3660878 D1 DE3660878 D1 DE 3660878D1 DE 8686303959 T DE8686303959 T DE 8686303959T DE 3660878 T DE3660878 T DE 3660878T DE 3660878 D1 DE3660878 D1 DE 3660878D1
Authority
DE
Germany
Prior art keywords
cathode
manufacturing
electron tube
electron
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8686303959T
Other languages
English (en)
Inventor
Kinjiro Mitsubishi Denki Sano
Toyokazu Mitsubishi Den Kamata
Keiji Mitsubishi Denk Fukuyama
Masato Mitsubishi Denki Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP60112602A external-priority patent/JPS61271732A/ja
Priority claimed from JP60112601A external-priority patent/JPS61269828A/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of DE3660878D1 publication Critical patent/DE3660878D1/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H01J1/142—Solid thermionic cathodes characterised by the material with alkaline-earth metal oxides, or such oxides used in conjunction with reducing agents, as an emissive material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
DE8686303959T 1985-05-25 1986-05-23 Cathode for electron tube and manufacturing method thereof Expired DE3660878D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60112602A JPS61271732A (ja) 1985-05-25 1985-05-25 電子管陰極
JP60112601A JPS61269828A (ja) 1985-05-25 1985-05-25 電子管陰極の製造方法

Publications (1)

Publication Number Publication Date
DE3660878D1 true DE3660878D1 (en) 1988-11-10

Family

ID=26451726

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686303959T Expired DE3660878D1 (en) 1985-05-25 1986-05-23 Cathode for electron tube and manufacturing method thereof

Country Status (4)

Country Link
US (2) US4864187A (de)
EP (1) EP0204477B1 (de)
KR (1) KR900007751B1 (de)
DE (1) DE3660878D1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1270890A (en) * 1985-07-19 1990-06-26 Keiji Watanabe Cathode for electron tube
KR910002969B1 (ko) * 1987-06-12 1991-05-11 미쓰비시전기주식회사 전자관음극(cathode for an electron tube)
NL8701739A (nl) * 1987-07-23 1989-02-16 Philips Nv Oxydekathode.
JPH0690907B2 (ja) * 1988-02-02 1994-11-14 三菱電機株式会社 電子管用陰極
CN1040263C (zh) * 1987-12-17 1998-10-14 三菱电机株式会社 电子管阴极
US5277637A (en) * 1989-04-03 1994-01-11 U.S. Philips Corporation Cathode for an electric discharge tube
NL8901076A (nl) * 1989-04-28 1990-11-16 Philips Nv Oxydekathode.
KR920001337B1 (ko) * 1989-09-07 1992-02-10 삼성전관 주식회사 전자관음극 및 그 제조방법
JPH0828183B2 (ja) * 1989-10-06 1996-03-21 三菱電機株式会社 電子管陰極
JP2758244B2 (ja) * 1990-03-07 1998-05-28 三菱電機株式会社 電子管用陰極
KR920009328B1 (ko) * 1990-08-18 1992-10-15 삼성전관 주식회사 산화물 음극의 제조방법
US5266867A (en) * 1990-10-15 1993-11-30 Matsushita Electronics Corporation Gas discharge tube with tunnel effect type cathode
KR100294484B1 (ko) * 1993-08-24 2001-09-17 김순택 전자관용음극
CA2188802C (en) * 1996-02-29 2001-12-11 Hiroshi Sakurai Cathode for electron tube
JP3216579B2 (ja) * 1997-07-23 2001-10-09 関西日本電気株式会社 陰極部材の製造方法およびこの陰極部材を用いた電子管
JP2001006521A (ja) * 1999-06-22 2001-01-12 Nec Kansai Ltd カソード構体およびカラーブラウン管
US10497530B2 (en) * 2015-04-10 2019-12-03 The Government Of The United States Of America, As Represented By The Secretary Of The Navy Thermionic tungsten/scandate cathodes and methods of making the same

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE477232C (de) * 1922-06-23 1929-06-04 Aeg Aus schwer schmelzbarem Metall, insbesondere Wolfram, bestehende Gluehkathode fuer Elektronenroehren
US1794298A (en) * 1926-09-21 1931-02-24 Gen Electric Thermionic cathode
DE880181C (de) * 1951-11-17 1953-06-18 British Driver Harris Company Elektrodenelement fuer Vakuumroehren
DE976106C (de) * 1954-11-19 1963-02-28 Siemens Ag Mittelbar geheizte Kathode fuer elektrische Entladungsgefaesse
US3358178A (en) * 1964-08-05 1967-12-12 Figner Avraam Iljich Metal-porous body having pores filled with barium scandate
US3922428A (en) * 1972-02-04 1975-11-25 Spectra Mat Inc Thermionic cathode comprising mixture of barium oxide, calcium oxide and samarium oxide
NL160869C (nl) * 1972-11-03 Philips Nv Luminescerend scherm, alsmede ontladingslamp en katho- de straalbuis, voorzien van een dergelijk scherm.
JPS6016056B2 (ja) * 1976-07-06 1985-04-23 ソニー株式会社 プレスカソ−ド
JPS5596531A (en) * 1979-01-19 1980-07-22 Hitachi Ltd Directly heated cathode for electron tube
JPS5853680B2 (ja) * 1979-07-10 1983-11-30 信越化学工業株式会社 工程剥離紙用樹脂組成物
NL7905542A (nl) * 1979-07-17 1981-01-20 Philips Nv Naleveringskathode.
GB2060991A (en) * 1979-09-20 1981-05-07 Matsushita Electric Ind Co Ltd Oxide-coated cathode and method of producing the same
JPS5678055A (en) * 1979-11-30 1981-06-26 Jeol Ltd Liquid chromatograph mass spectrograph
JPS58154131A (ja) * 1982-03-10 1983-09-13 Hitachi Ltd 含浸形陰極
NL8201371A (nl) * 1982-04-01 1983-11-01 Philips Nv Werkwijzen voor het vervaardigen van een naleveringskathode en naleveringskathode vervaardigd volgens deze werkwijzen.
JPS599828A (ja) * 1982-07-08 1984-01-19 Okaya Denki Sangyo Kk 加熱陰極の製造方法
JPS5920941A (ja) * 1982-07-27 1984-02-02 Toshiba Corp 陰極構体
JPS59138033A (ja) * 1983-01-27 1984-08-08 Toshiba Corp 酸化物陰極構体
JPS59191226A (ja) * 1983-04-13 1984-10-30 Mitsubishi Electric Corp 電子管などの陰極体の製造方法
JPS601718A (ja) * 1983-06-20 1985-01-07 Toshiba Corp 酸化物陰極構体及びその製造方法
NL8403032A (nl) * 1984-10-05 1986-05-01 Philips Nv Werkwijze voor het vervaardigen van een scandaatnaleveringskathode, naleveringskathode vervaardigd met deze werkwijze.

Also Published As

Publication number Publication date
US5015497A (en) 1991-05-14
US4864187A (en) 1989-09-05
EP0204477A1 (de) 1986-12-10
KR860009460A (ko) 1986-12-23
EP0204477B1 (de) 1988-10-05
KR900007751B1 (ko) 1990-10-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: STREHL, P., DIPL.-ING. DIPL.-WIRTSCH.-ING. SCHUEBEL-HOPF, U., DIPL.-CHEM. DR.RER.NAT. GROENING, H., DIPL.-ING., PAT.-ANWAELTE, 8000 MUENCHEN