GB1324914A - Cathode ray tubes - Google Patents

Cathode ray tubes

Info

Publication number
GB1324914A
GB1324914A GB4323171A GB4323171A GB1324914A GB 1324914 A GB1324914 A GB 1324914A GB 4323171 A GB4323171 A GB 4323171A GB 4323171 A GB4323171 A GB 4323171A GB 1324914 A GB1324914 A GB 1324914A
Authority
GB
United Kingdom
Prior art keywords
grid
ray tubes
cathode
sept
dielectric
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
GB4323171A
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.)
HP Inc
Original Assignee
Hewlett Packard 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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of GB1324914A publication Critical patent/GB1324914A/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
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/395—Charge-storage screens charge-storage grids exhibiting triode effect
    • 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
    • H01J31/18—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with image written by a ray or beam on a grid-like charge-accumulating screen, and with a ray or beam passing through and influenced by this screen before striking the luminescent screen, e.g. direct-view storage tube

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

1324914 Cathode-ray tubes HEWLETTPACKARD CO 16 Sept 1971 [28 Sept 1970] 43231/71 Heading H1D In a cathode-ray tube a secondary emission structure intermediate the electron gun 34 and the screen 42 comprises a grid 38 or 40 provided with a dielectric coating 16 on the surface facing the gun 34, the dielectric being such as to emit secondary electrons and having a lattice energy greater than 1000 kcal./mole, and a collector electrode 39 or 41 on the electron gun side of the grid adjacent the grid and insulated therefrom. The grids 38 and 40 are respectively an expansion lens and a charge storage element. Suitable dielectric coatings are hafnium dioxide and thorium oxide.
GB4323171A 1970-09-28 1971-09-16 Cathode ray tubes Expired GB1324914A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7580970A 1970-09-28 1970-09-28

Publications (1)

Publication Number Publication Date
GB1324914A true GB1324914A (en) 1973-07-25

Family

ID=22128117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4323171A Expired GB1324914A (en) 1970-09-28 1971-09-16 Cathode ray tubes

Country Status (4)

Country Link
DE (1) DE2146232C3 (en)
FR (1) FR2108648A5 (en)
GB (1) GB1324914A (en)
NL (1) NL7113019A (en)

Also Published As

Publication number Publication date
DE2146232C3 (en) 1979-09-27
DE2146232B2 (en) 1979-02-01
FR2108648A5 (en) 1972-05-19
DE2146232A1 (en) 1972-04-06
NL7113019A (en) 1972-03-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee