GB1412839A - Colour display cathode-ray tube - Google Patents

Colour display cathode-ray tube

Info

Publication number
GB1412839A
GB1412839A GB5777973A GB5777973A GB1412839A GB 1412839 A GB1412839 A GB 1412839A GB 5777973 A GB5777973 A GB 5777973A GB 5777973 A GB5777973 A GB 5777973A GB 1412839 A GB1412839 A GB 1412839A
Authority
GB
United Kingdom
Prior art keywords
guns
axes
electrodes
parallel
axis
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
GB5777973A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1412839A publication Critical patent/GB1412839A/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
    • H01J31/20—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours
    • H01J31/201—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode
    • H01J31/203—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode with more than one electron beam
    • H01J31/206—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours using a colour-selection electrode with more than one electron beam with three coplanar electron beams
    • 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
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

1412839 Colour cathode-ray tubes PHILIPS ELECTRIC & ASSOCIATED INDUSTRIES Ltd 13 Dec 1973 [16 Dec 1972] 57779/73 Heading H1D In a colour display cathode-ray tube, each gun 10, 20, 30, has a cathode 12, 22, 32, a control grid 13, 23, 33, an anode 14, 24, 34, a focusing electrode 15, 25, 35 and an accelerating electrode 16, 26, 36. The gun axes 17, 27, 37 may be coplanar with axis 28 coinciding with the main axis of the tube, and the axis 17, 37 displaced and parallel on either side. The axes 18, 38 of electrodes 16, 36 are displaced outwardly from the axes 18, 38 of the guns 10, 30, while remaining parallel to and in the same plane as the axes of the guns. The diameter of electrodes 16, 36 is greater than the diameter of the electrodes 15, 25, 35 by at least twice the displacement. In another arrangement, the guns are arranged with their axes parallel to the tube axis and displaced therefrom in triangular fashion, the electrodes 16, 26, 36 being further displaced from the axis. The effect of the displacement of electrodes 16, 26, 36 is to deflect the electron beams from the guns so that the beams converge on a single point, even though the gun axes are parallel. The parallel arrangement of the guns enables these to be assembled on a jig with pins, and the guns to be joined together and removed as a unit without disassembling the pins.
GB5777973A 1972-12-16 1973-12-13 Colour display cathode-ray tube Expired GB1412839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7217179A NL7217179A (en) 1972-12-16 1972-12-16

Publications (1)

Publication Number Publication Date
GB1412839A true GB1412839A (en) 1975-11-05

Family

ID=19817573

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5777973A Expired GB1412839A (en) 1972-12-16 1973-12-13 Colour display cathode-ray tube

Country Status (10)

Country Link
US (1) US3906279A (en)
JP (1) JPS4990870A (en)
BE (1) BE808659A (en)
CA (1) CA979474A (en)
DE (1) DE2358896A1 (en)
ES (1) ES421456A1 (en)
FR (1) FR2327636A1 (en)
GB (1) GB1412839A (en)
IT (1) IT999991B (en)
NL (1) NL7217179A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5038462A (en) * 1973-08-08 1975-04-09
US4028581A (en) * 1976-06-24 1977-06-07 Gte Sylvania Incorporated Plural beam electron gun assembly
US4061941A (en) * 1976-06-24 1977-12-06 Gte Sylvania Incorporated CRT electron gun assembly
JPS53118972A (en) * 1977-03-28 1978-10-17 Toshiba Corp Electron gun constituent body
DE2832687C2 (en) * 1978-07-26 1984-01-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Electron gun of a color cathode ray tube
NL7809160A (en) * 1978-09-08 1980-03-11 Philips Nv COLOR IMAGE TUBE.
NL7904114A (en) * 1979-05-25 1980-11-27 Philips Nv COLOR IMAGE TUBE.
NL8102527A (en) * 1981-05-22 1982-12-16 Philips Nv COLOR IMAGE TUBE.
US4500808A (en) * 1982-04-02 1985-02-19 Rca Corporation Multibeam electron gun with composite electrode having plurality of separate metal plates
NL8400927A (en) * 1984-03-23 1985-10-16 Philips Nv DEVICE AND METHOD FOR MOUNTING AN INTEGRATED ELECTRON CANNON SYSTEM.
US4605880A (en) * 1984-08-22 1986-08-12 Rca Corporation Multibeam electron gun having a cathode-grid subassembly and method of assembling same
US4607187A (en) * 1984-08-22 1986-08-19 Rca Corporation Structure for and method of aligning beam-defining apertures by means of alignment apertures
TW405142B (en) * 1997-01-13 2000-09-11 Toshiba Corp Color cathode ray tube

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850658A (en) * 1956-02-21 1958-09-02 Rca Corp Non-symmetrical cathodes in cathode ray tubes
BE793992A (en) * 1972-01-14 1973-05-02 Rca Corp CATHODIC RAY TUBE

Also Published As

Publication number Publication date
BE808659A (en) 1974-06-14
NL7217179A (en) 1974-06-18
FR2327636B1 (en) 1978-03-24
JPS4990870A (en) 1974-08-30
US3906279A (en) 1975-09-16
FR2327636A1 (en) 1977-05-06
IT999991B (en) 1976-03-10
ES421456A1 (en) 1976-04-01
CA979474A (en) 1975-12-09
DE2358896A1 (en) 1974-06-20

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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