GB997576A - Improvements in cathode ray tubes - Google Patents

Improvements in cathode ray tubes

Info

Publication number
GB997576A
GB997576A GB36730/62A GB3673062A GB997576A GB 997576 A GB997576 A GB 997576A GB 36730/62 A GB36730/62 A GB 36730/62A GB 3673062 A GB3673062 A GB 3673062A GB 997576 A GB997576 A GB 997576A
Authority
GB
United Kingdom
Prior art keywords
coating
resistive
deflection
sept
coatings
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
GB36730/62A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB997576A publication Critical patent/GB997576A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/123—Flat display tubes
    • H01J31/124—Flat display tubes using electron beam scanning

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

997,576. Cathode-ray tubes. GENERAL ELECTRIC CO. Sept. 27, 1962 [Sept. 29, 1961], No. 36730/62. Heading H1D. In a flat cathode-ray tube the vertical scanning deflection is obtained by applying a fixed positive potential at 34 to one end of a resistive coating 24 or alternatively of an array of wires interconnected by resistors, and a varying voltage 46 at 36 to a conductive coating 26. A voltage gradient set up along the resistive coating 24 produces a varying deflection field between the coating 24 and the metallic coating 20 on the phosphor screen 18, and a deflection field is also produced between the conductive coating 26 and the coating 21 which may be an extension of the coating 20. The shape of the coating 21 is preferably parabolic but the envelope could be L-shaped in this region. Conductive coating 30 and portions 23, 25 of coatings 21, 26 form a lens system. The resistive coating 24 may be of chromic oxide. A resistive coating 22 at the top of the tube may be dispensed with and coatings 24, 26 need not lie in a plane. The horizontal deflection system is magnetic and includes shaped collimating polepieces 12 similar to those described in Specification 997,575.
GB36730/62A 1961-09-29 1962-09-27 Improvements in cathode ray tubes Expired GB997576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US141862A US3155872A (en) 1961-09-29 1961-09-29 Flat display tube utilizing voltage gradient deflection layer

Publications (1)

Publication Number Publication Date
GB997576A true GB997576A (en) 1965-07-07

Family

ID=22497588

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36730/62A Expired GB997576A (en) 1961-09-29 1962-09-27 Improvements in cathode ray tubes

Country Status (5)

Country Link
US (1) US3155872A (en)
DE (1) DE1232273B (en)
ES (1) ES281160A1 (en)
GB (1) GB997576A (en)
NL (1) NL283750A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1489869C3 (en) * 1965-03-26 1973-11-29 Heimann Gmbh, 6200 Wiesbaden-Dotzheim Arrangement to reduce or suppress the pincushion Ver drawing and the image field curvature in the image by means of electric electron lenses
US3473200A (en) * 1967-07-31 1969-10-21 Hughes Aircraft Co Flat direct view storage tube

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880365A (en) * 1955-08-29 1959-03-31 Rca Corp Simplified scanning means for flat type kinescope

Also Published As

Publication number Publication date
DE1232273B (en) 1967-01-12
US3155872A (en) 1964-11-03
ES281160A1 (en) 1963-02-01
NL283750A (en)

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