GB1309423A - Field-emission cathodes and methods for preparing these cathodes - Google Patents
Field-emission cathodes and methods for preparing these cathodesInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cold Cathode And The Manufacture (AREA)
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.
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)
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)
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 |
EP0299461B1 (en) * | 1987-07-15 | 1995-05-10 | Canon Kabushiki Kaisha | Electron-emitting device |
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 |
US5759080A (en) * | 1987-07-15 | 1998-06-02 | Canon Kabushiki Kaisha | Display device with electron-emitting device with electron-emitting region insulated form electrodes |
USRE40062E1 (en) * | 1987-07-15 | 2008-02-12 | Canon Kabushiki Kaisha | Display device with electron-emitting device with electron-emitting region insulated from electrodes |
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 |
EP0904159A4 (en) * | 1996-04-01 | 2002-02-27 | Univ 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)
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 |
-
1970
- 1970-03-10 US US18176A patent/US3678325A/en not_active Expired - Lifetime
- 1970-03-10 GB GB1134670A patent/GB1309423A/en not_active Expired
- 1970-03-13 FR FR7009158A patent/FR2034947B1/fr not_active Expired
- 1970-03-13 NL NL707003616A patent/NL149947B/en unknown
- 1970-03-13 DE DE2012101A patent/DE2012101B2/en active Granted
Cited By (2)
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 |
---|---|
FR2034947B1 (en) | 1974-09-20 |
DE2012101A1 (en) | 1970-09-24 |
NL7003616A (en) | 1970-09-16 |
FR2034947A1 (en) | 1970-12-18 |
NL149947B (en) | 1976-06-15 |
DE2012101C3 (en) | 1975-10-09 |
US3678325A (en) | 1972-07-18 |
DE2012101B2 (en) | 1975-03-06 |
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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 |