GB1394055A - Electron emitters - Google Patents

Electron emitters

Info

Publication number
GB1394055A
GB1394055A GB3232971A GB3232971A GB1394055A GB 1394055 A GB1394055 A GB 1394055A GB 3232971 A GB3232971 A GB 3232971A GB 3232971 A GB3232971 A GB 3232971A GB 1394055 A GB1394055 A GB 1394055A
Authority
GB
United Kingdom
Prior art keywords
cathode
tubes
july
field
electron
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
GB3232971A
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB3232971A priority Critical patent/GB1394055A/en
Priority to US269139A priority patent/US3866077A/en
Publication of GB1394055A publication Critical patent/GB1394055A/en
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
    • H01J1/30—Cold cathodes, e.g. field-emissive cathode
    • H01J1/304—Field-emissive cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement, ion-optical arrangement
    • H01J37/06—Electron sources; Electron guns
    • H01J37/073—Electron guns using field emission, photo emission, or secondary emission electron sources
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/24—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
    • H01J37/241—High voltage power supply or regulation circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/30—Cold cathodes
    • H01J2201/304—Field emission cathodes
    • H01J2201/30446—Field emission cathodes characterised by the emitter material
    • H01J2201/30453—Carbon types
    • H01J2201/30457—Diamond

Abstract

1394055 Field-emission cathodes NATIONAL RESEARCH DEVELOPMENT CORP 18 July 1972 [9 July 1971] 32329/71 Heading H1D An electron discharge tube is provided with a field-emission cathode consisting of at least one carbon filament 46 having a pointed end 56 and mounted in a tantalum sheet 52 by means of tin solder 48. Alternatively, the fibre can be attached to a metal support by means of a conductive adhesive and the point formed by means of an electric discharge. The cathode can consist of an array of at least a thousand filaments. The cathode can be used in an electron beam machining apparatus, Fig. 1 (not shown), scanning transmission or reflection electron microscopes, Fig. 3 (not shown), X-ray tubes, colour cathode-ray display tubes or camera tubes, vacuum gauges or microwave tubes.
GB3232971A 1971-07-09 1971-07-09 Electron emitters Expired GB1394055A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3232971A GB1394055A (en) 1971-07-09 1971-07-09 Electron emitters
US269139A US3866077A (en) 1971-07-09 1972-07-05 Electron emitters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3232971A GB1394055A (en) 1971-07-09 1971-07-09 Electron emitters

Publications (1)

Publication Number Publication Date
GB1394055A true GB1394055A (en) 1975-05-14

Family

ID=10336911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3232971A Expired GB1394055A (en) 1971-07-09 1971-07-09 Electron emitters

Country Status (2)

Country Link
US (1) US3866077A (en)
GB (1) GB1394055A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2309822A (en) * 1996-01-30 1997-08-06 Samsung Display Devices Co Ltd Electron gun for color CRT

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2542355A1 (en) * 1975-09-19 1977-03-24 Siemens Ag RADIATION SCREEN ELECTRON MICROSCOPE WITH DISC-SHAPED DETECTOR
NL7605820A (en) * 1976-05-31 1977-12-02 Philips Nv ELECTRON BEAM TUBE WITH FIELD EMISSION ELECTRONIC SOURCE, FIELD EMISSION ELECTRONIC SOURCE FOR SUCH ELECTRONIC BEAM TUBE AND METHOD FOR MANUFACTURE OF SUCH FIELD EMISSION ELECTRONIC SOURCE.
JPS6351037A (en) * 1986-08-20 1988-03-04 Toshiba Corp Anode chamber of electron beam device
US5654548A (en) * 1992-08-06 1997-08-05 International Business Machines Corporation Source for intense coherent electron pulses
US5602439A (en) * 1994-02-14 1997-02-11 The Regents Of The University Of California, Office Of Technology Transfer Diamond-graphite field emitters
US5578901A (en) * 1994-02-14 1996-11-26 E. I. Du Pont De Nemours And Company Diamond fiber field emitters
US5550432A (en) * 1994-11-01 1996-08-27 The United States Of America As Represented By The Secretary Of The Air Force Smart adaptive vacuum electronics
WO1996042101A1 (en) * 1995-06-12 1996-12-27 Ecole Polytechnique Federale De Lausanne Electron source and applications of the same
CA2229067A1 (en) * 1995-08-14 1997-02-27 E.I. Du Pont De Nemours And Company Fluorescent lamp
AU6719396A (en) * 1995-08-14 1997-03-12 E.I. Du Pont De Nemours And Company Display panels using fibrous field emitters
EP0932909B1 (en) * 1996-10-17 2004-09-22 E.I. Du Pont De Nemours And Company Connection method for fiber field emitters and field emitter cathodes made therefrom
US6020677A (en) * 1996-11-13 2000-02-01 E. I. Du Pont De Nemours And Company Carbon cone and carbon whisker field emitters
KR100520337B1 (en) 1997-04-02 2005-10-11 이 아이 듀폰 디 네모아 앤드 캄파니 Metal-Oxygen-Carbon Field Emission Electron Emitter Composition, the Field Emission Cathode Comprising the Same, and the Process for the Production of the Field Emission Cathode
CN1281586A (en) * 1997-12-15 2001-01-24 纳幕尔杜邦公司 Ion bombarded graphite electron emitters
KR100550486B1 (en) * 1997-12-15 2006-02-09 이 아이 듀폰 디 네모아 앤드 캄파니 Coated-Wire Ion Bombarded Graphite Electron Emitters
KR20010039637A (en) * 1999-06-18 2001-05-15 이철진 Method of fabricating white light source using carbon nanotubes
US6586889B1 (en) 2000-06-21 2003-07-01 Si Diamond Technology, Inc. MEMS field emission device
US6819034B1 (en) 2000-08-21 2004-11-16 Si Diamond Technology, Inc. Carbon flake cold cathode
US6664728B2 (en) 2000-09-22 2003-12-16 Nano-Proprietary, Inc. Carbon nanotubes with nitrogen content
US20050200261A1 (en) * 2000-12-08 2005-09-15 Nano-Proprietary, Inc. Low work function cathode
US6885022B2 (en) * 2000-12-08 2005-04-26 Si Diamond Technology, Inc. Low work function material
US20020170887A1 (en) * 2001-03-01 2002-11-21 Konica Corporation Optical element producing method, base material drawing method and base material drawing apparatus
US6739932B2 (en) * 2001-06-07 2004-05-25 Si Diamond Technology, Inc. Field emission display using carbon nanotubes and methods of making the same
US6700454B2 (en) 2001-06-29 2004-03-02 Zvi Yaniv Integrated RF array using carbon nanotube cathodes
US6897603B2 (en) * 2001-08-24 2005-05-24 Si Diamond Technology, Inc. Catalyst for carbon nanotube growth
US6660959B2 (en) * 2001-11-21 2003-12-09 University Of Kentucky Research Foundation Processes for nanomachining using carbon nanotubes
US6979947B2 (en) 2002-07-09 2005-12-27 Si Diamond Technology, Inc. Nanotriode utilizing carbon nanotubes and fibers
US20080012461A1 (en) * 2004-11-09 2008-01-17 Nano-Proprietary, Inc. Carbon nanotube cold cathode
PL234120B1 (en) * 2018-03-08 2020-01-31 Inst Tele I Radiotech Cold-cathode tube for generation of UV light

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1203215A (en) * 1914-07-20 1916-10-31 Samuel T Mccollam Electrode.
US1628045A (en) * 1926-10-08 1927-05-10 Manhattan Electrical Supply Co Electronic discharge device
CH220324A (en) * 1939-07-22 1942-03-31 Fides Gmbh Electron microscope.
US3535516A (en) * 1966-10-17 1970-10-20 Hitachi Ltd Electron microscope employing a modulated scanning beam and a phase sensitive detector to improve the signal to noise ratio
US3484643A (en) * 1966-12-01 1969-12-16 Physics Int Co Boron carbide cathode for cold emission type cathode of the field emission type
US3532923A (en) * 1969-03-17 1970-10-06 Ibm Pyrolytic graphite support for lanthanum hexaboride cathode emitter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2309822A (en) * 1996-01-30 1997-08-06 Samsung Display Devices Co Ltd Electron gun for color CRT

Also Published As

Publication number Publication date
US3866077A (en) 1975-02-11

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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