GB1309423A - Field-emission cathodes and methods for preparing these cathodes - Google Patents

Field-emission cathodes and methods for preparing these cathodes

Info

Publication number
GB1309423A
GB1309423A GB1134670A GB1134670A GB1309423A GB 1309423 A GB1309423 A GB 1309423A GB 1134670 A GB1134670 A GB 1134670A GB 1134670 A GB1134670 A GB 1134670A GB 1309423 A GB1309423 A GB 1309423A
Authority
GB
United Kingdom
Prior art keywords
cathode
cathodes
ions
march
implanted
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
GB1134670A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1309423A publication Critical patent/GB1309423A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J9/022—Manufacture of electrodes or electrode systems of cold cathodes
    • H01J9/025—Manufacture of electrodes or electrode systems of cold cathodes of field emission cathodes
    • 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
    • H01J1/30—Cold cathodes, e.g. field-emissive cathode
    • H01J1/304—Field-emissive cathodes

Abstract

1309423 Cathode materials and processing MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 10 March 1970 [14 March 1969] 11346/70 Heading H1D A field emission cathode comprises a refractory body having a pointed tip into which Li, Na, K, Cs, Ca, Th or Zr ions are implanted by an ion beam from a plasma so that their peak distribution is away from the surface. The body is of W, Mo, Ta or Re, may be coated with the oxide or carbide thereof, or comprises a SiC whisker. The implanted ions have a low work function and allow electrons to escape using the tunnel effect. The tip is produced by electrochemical etching or by arcing in a disruptive breakdown discharge. The ion beam is applied, the cathode is exposed to air and heated in vacuum, e.g. in an electron tube to remove unwanted oxide and adsorbed gases and also to actuate the cathode by diffusing implanted ions to the surface.
GB1134670A 1969-03-14 1970-03-10 Field-emission cathodes and methods for preparing these cathodes Expired GB1309423A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2107269 1969-03-14

Publications (1)

Publication Number Publication Date
GB1309423A true GB1309423A (en) 1973-03-14

Family

ID=12044667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1134670A Expired GB1309423A (en) 1969-03-14 1970-03-10 Field-emission cathodes and methods for preparing these cathodes

Country Status (5)

Country Link
US (1) US3678325A (en)
DE (1) DE2012101B2 (en)
FR (1) FR2034947B1 (en)
GB (1) GB1309423A (en)
NL (1) NL149947B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6097139A (en) * 1995-08-04 2000-08-01 Printable Field Emitters Limited Field electron emission materials and devices
US8058159B2 (en) 2008-08-27 2011-11-15 General Electric Company Method of making low work function component

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814975A (en) * 1969-08-06 1974-06-04 Gen Electric Electron emission system
FR2177497B1 (en) * 1972-03-27 1978-09-29 Labo Electronique Physique
US4325000A (en) * 1980-04-20 1982-04-13 Burroughs Corporation Low work function cathode
GB8621600D0 (en) * 1986-09-08 1987-03-18 Gen Electric Co Plc Vacuum devices
USRE39633E1 (en) * 1987-07-15 2007-05-15 Canon Kabushiki Kaisha Display device with electron-emitting device with electron-emitting region insulated from electrodes
USRE40566E1 (en) * 1987-07-15 2008-11-11 Canon Kabushiki Kaisha Flat panel display including electron emitting device
USRE40062E1 (en) * 1987-07-15 2008-02-12 Canon Kabushiki Kaisha Display device with electron-emitting device with electron-emitting region insulated from electrodes
US5759080A (en) * 1987-07-15 1998-06-02 Canon Kabushiki Kaisha Display device with electron-emitting device with electron-emitting region insulated form electrodes
DE3853744T2 (en) * 1987-07-15 1996-01-25 Canon Kk Electron emitting device.
US5089292A (en) * 1990-07-20 1992-02-18 Coloray Display Corporation Field emission cathode array coated with electron work function reducing material, and method
JP3239038B2 (en) * 1995-04-03 2001-12-17 シャープ株式会社 Method of manufacturing field emission electron source
US5713775A (en) * 1995-05-02 1998-02-03 Massachusetts Institute Of Technology Field emitters of wide-bandgap materials and methods for their fabrication
WO1997036693A1 (en) * 1996-04-01 1997-10-09 The Regents Of The University Of California Process to modify work functions using ion implantation
WO1998021737A1 (en) * 1996-11-13 1998-05-22 Board Of Trustees Of The Leland Stanford Junior University Carbon-containing cathodes for enhanced electron emission
WO1998051417A1 (en) * 1997-05-16 1998-11-19 The Board Of Trustees Of The Leland Stanford Junior University Method and apparatus for making thermionic oxide cathodes
US6255772B1 (en) 1998-02-27 2001-07-03 Micron Technology, Inc. Large-area FED apparatus and method for making same
US6019913A (en) * 1998-05-18 2000-02-01 The Regents Of The University Of California Low work function, stable compound clusters and generation process
FR2803944B1 (en) * 2000-01-14 2002-06-14 Thomson Tubes Electroniques ELECTRON GENERATING CATHODE AND MANUFACTURING METHOD THEREOF
US7488106B2 (en) * 2005-05-05 2009-02-10 Leco Corporation Automated calorimeter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL285235A (en) * 1961-11-08
US3425111A (en) * 1964-10-08 1969-02-04 Trak Microwave Corp Method of making cathodes by neutron bombardment
US3356912A (en) * 1964-10-16 1967-12-05 Gen Electric Porous electrode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6097139A (en) * 1995-08-04 2000-08-01 Printable Field Emitters Limited Field electron emission materials and devices
US8058159B2 (en) 2008-08-27 2011-11-15 General Electric Company Method of making low work function component

Also Published As

Publication number Publication date
DE2012101C3 (en) 1975-10-09
DE2012101B2 (en) 1975-03-06
US3678325A (en) 1972-07-18
FR2034947B1 (en) 1974-09-20
NL149947B (en) 1976-06-15
NL7003616A (en) 1970-09-16
DE2012101A1 (en) 1970-09-24
FR2034947A1 (en) 1970-12-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee