DE69411248T2 - Vorratskathode und Herstellungsverfahren - Google Patents

Vorratskathode und Herstellungsverfahren

Info

Publication number
DE69411248T2
DE69411248T2 DE69411248T DE69411248T DE69411248T2 DE 69411248 T2 DE69411248 T2 DE 69411248T2 DE 69411248 T DE69411248 T DE 69411248T DE 69411248 T DE69411248 T DE 69411248T DE 69411248 T2 DE69411248 T2 DE 69411248T2
Authority
DE
Germany
Prior art keywords
powders
granules
pressed
mixed
cathodes
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 - Fee Related
Application number
DE69411248T
Other languages
English (en)
Other versions
DE69411248D1 (de
Inventor
Jacobus A J M Deckers
Theodorus H Weekers
Albert Manenschijn
Franciscus M M Snijkers
Der Heid Petrus A M Van
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.)
Koninklijke Philips NV
Original Assignee
Philips Electronics NV
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 BE9301156A external-priority patent/BE1007677A3/nl
Priority claimed from BE9301155A external-priority patent/BE1007676A3/nl
Application filed by Philips Electronics NV filed Critical Philips Electronics NV
Publication of DE69411248D1 publication Critical patent/DE69411248D1/de
Application granted granted Critical
Publication of DE69411248T2 publication Critical patent/DE69411248T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
    • H01J9/047—Cathodes having impregnated bodies
    • 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
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/28—Heaters for thermionic cathodes
    • H01J2201/2892—Coatings

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Powder Metallurgy (AREA)
DE69411248T 1993-10-28 1994-10-21 Vorratskathode und Herstellungsverfahren Expired - Fee Related DE69411248T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9301156A BE1007677A3 (nl) 1993-10-28 1993-10-28 Werkwijze voor het vervaardigen van een naleveringskathode.
BE9301155A BE1007676A3 (nl) 1993-10-28 1993-10-28 Werkwijze voor het vervaardigen van een naleveringskathode.

Publications (2)

Publication Number Publication Date
DE69411248D1 DE69411248D1 (de) 1998-07-30
DE69411248T2 true DE69411248T2 (de) 1999-02-04

Family

ID=25662802

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69411248T Expired - Fee Related DE69411248T2 (de) 1993-10-28 1994-10-21 Vorratskathode und Herstellungsverfahren

Country Status (5)

Country Link
US (2) US5666022A (de)
EP (1) EP0651419B1 (de)
JP (1) JPH07192602A (de)
AT (1) ATE167755T1 (de)
DE (1) DE69411248T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5407633A (en) * 1994-03-15 1995-04-18 U.S. Philips Corporation Method of manufacturing a dispenser cathode
DE19515596A1 (de) * 1995-05-02 1996-11-07 Philips Patentverwaltung Elektrische Entladungsröhre oder Entladungslampe, Flachbildschirm, Niedertemperaturkathode und Verfahren zu deren Herstellung
JP2000306492A (ja) * 1999-04-21 2000-11-02 Hitachi Powdered Metals Co Ltd 電界放出型カソード、電子放出装置、および電子放出装置の製造方法
DE19961672B4 (de) * 1999-12-21 2009-04-09 Philips Intellectual Property & Standards Gmbh Scandat-Vorratskathode
DE10121442B4 (de) * 2000-09-19 2010-04-08 Philips Intellectual Property & Standards Gmbh Kathodenstrahlröhre mit Oxidkathode
CN100433230C (zh) * 2006-07-19 2008-11-12 北京工业大学 压制型含钪扩散阴极的制备方法
US8311186B2 (en) * 2007-12-14 2012-11-13 Schlumberger Technology Corporation Bi-directional dispenser cathode
US20110140074A1 (en) * 2009-12-16 2011-06-16 Los Alamos National Security, Llc Room temperature dispenser photocathode
BR112014002222A2 (pt) * 2011-08-03 2017-02-21 Koninklijke Philips Nv material alvo, uso do material, método para a produção de um catodo dispensador de bário-escandato e dispositivo
US10074505B2 (en) * 2016-01-14 2018-09-11 Wisconsin Alumni Research Foundation Perovskites as ultra-low work function electron emission materials

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH629033A5 (de) * 1978-05-05 1982-03-31 Bbc Brown Boveri & Cie Gluehkathode.
JPS5652835A (en) * 1979-10-01 1981-05-12 Hitachi Ltd Impregnated cathode
US4436651A (en) * 1981-04-20 1984-03-13 David M. Corneille Thermionic cathode and process for preparing the same
JPS58154131A (ja) * 1982-03-10 1983-09-13 Hitachi Ltd 含浸形陰極
JPS58192237A (ja) * 1982-05-07 1983-11-09 Hitachi Ltd 含浸形陰極
JPS59203343A (ja) * 1983-05-04 1984-11-17 Hitachi Ltd 含浸形陰極
NL8403032A (nl) * 1984-10-05 1986-05-01 Philips Nv Werkwijze voor het vervaardigen van een scandaatnaleveringskathode, naleveringskathode vervaardigd met deze werkwijze.
NL8701583A (nl) * 1987-07-06 1989-02-01 Philips Nv Scandaatkathode.
NL8701584A (nl) * 1987-07-06 1989-02-01 Philips Nv Werkwijze voor de vervaardiging van een naleveringskathode; naleveringskathode vervaardigd volgens de werkwijze; lopende golfbuis, klystron en zendbuis bevattende een kathode vervaardigd volgens de werkwijze.
NL8702727A (nl) * 1987-11-16 1989-06-16 Philips Nv Scandaatkathode.
KR910003698B1 (en) * 1988-11-11 1991-06-08 Samsung Electronic Devices Cavity reservoir type dispenser cathode and method of the same
JP2635415B2 (ja) * 1989-07-21 1997-07-30 関西日本電気株式会社 含浸型陰極の製造方法
JP2699770B2 (ja) * 1992-07-14 1998-01-19 信越化学工業株式会社 高充填性窒化ケイ素粉末及びその製造方法

Also Published As

Publication number Publication date
EP0651419B1 (de) 1998-06-24
DE69411248D1 (de) 1998-07-30
ATE167755T1 (de) 1998-07-15
EP0651419A1 (de) 1995-05-03
JPH07192602A (ja) 1995-07-28
US5890941A (en) 1999-04-06
US5666022A (en) 1997-09-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V., EINDHOVEN, N

8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee