GB1192067A - Electron Emitting Device and Method of Assembling the Same - Google Patents

Electron Emitting Device and Method of Assembling the Same

Info

Publication number
GB1192067A
GB1192067A GB40725/67A GB4072567A GB1192067A GB 1192067 A GB1192067 A GB 1192067A GB 40725/67 A GB40725/67 A GB 40725/67A GB 4072567 A GB4072567 A GB 4072567A GB 1192067 A GB1192067 A GB 1192067A
Authority
GB
United Kingdom
Prior art keywords
cathode
layer
layers
sept
insulator
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
GB40725/67A
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.)
Sony Corp
Original Assignee
Sony 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
Application filed by Sony Corp filed Critical Sony Corp
Publication of GB1192067A publication Critical patent/GB1192067A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/04—Cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/485—Construction of the gun or of parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/027—Construction of the gun or parts thereof
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Resistance Heating (AREA)

Abstract

1,192,067. Electron guns; cathode materials and processing. SONY CORP. 6 Sept., 1967 [10 Sept., 1966], No. 40725/67. Heading H1D. [Also in Division C7] A cathode structure comprises an insulating member 4, Fig. 3, provided with a support ledge 11 across which extends a heater element 7 carrying a cathode element 5, the element 7 being connected at its ends to two leaf springs 13 and 14 which apply tension along the length of the element and at right angles to this direction respectively. The other ends of the leaf springs are spot welded to lead-in conductors 15 and 16 which are secured to the insulator 4. The insulator 4 may be provided with a rim 12 which co-operates with a spacer 28 to position the cathode accurately with respect to the front surface of a control electrode 2 in an electron gun for a television picture tube. Cathode materials and processing.-The cathode 5 comprises a metal base 6, e.g. of nickel, on which are superposed three layers each of about 30 microns thick. The first layer is formed by spraying or spreading a compound solution comprising a powder of nickel or platinum, a powdered alkaline earth carbonate and an adhesive agent such as butyl acetate, butyl alcohol, or nitrocellulose. The second layer comprises alkaline earth carbonate and adhesive, and the third layer is the same as the first. After the layers have been applied they are compressed and then heated to about 1000‹ C. to sinter the outer layers and to convert the carbonate to oxide.
GB40725/67A 1966-09-10 1967-09-06 Electron Emitting Device and Method of Assembling the Same Expired GB1192067A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5977966 1966-09-10

Publications (1)

Publication Number Publication Date
GB1192067A true GB1192067A (en) 1970-05-20

Family

ID=13123104

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40725/67A Expired GB1192067A (en) 1966-09-10 1967-09-06 Electron Emitting Device and Method of Assembling the Same

Country Status (3)

Country Link
US (1) US3444416A (en)
DE (1) DE1639463C3 (en)
GB (1) GB1192067A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3541382A (en) * 1967-12-11 1970-11-17 Tokyo Shibaura Electric Co Direct heated cathode member for an electron tube
DE2606897C3 (en) * 1976-02-20 1981-07-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Electron gun of a cathode ray tube
US4259610A (en) * 1977-09-12 1981-03-31 Tokyo Shibaura Denki Kabushiki Kaisha Electron gun assembly for cathode ray tubes and method of assembling the same
JPS6023455B2 (en) * 1978-10-17 1985-06-07 株式会社東芝 Directly heated cathode structure
JPS6023454B2 (en) * 1978-11-29 1985-06-07 株式会社日立製作所 electron tube cathode
JPS55102146A (en) * 1979-01-31 1980-08-05 Toshiba Corp Directly-heated cathode structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2335818A (en) * 1942-09-29 1943-11-30 Rca Corp Cathode assembly
US3097419A (en) * 1960-03-11 1963-07-16 dickson
US3389290A (en) * 1965-04-06 1968-06-18 Sony Corp Electron gun device

Also Published As

Publication number Publication date
DE1639463B2 (en) 1977-12-08
US3444416A (en) 1969-05-13
DE1639463C3 (en) 1978-08-10
DE1639463A1 (en) 1971-04-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years