GB836008A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB836008A
GB836008A GB12886/56A GB1288656A GB836008A GB 836008 A GB836008 A GB 836008A GB 12886/56 A GB12886/56 A GB 12886/56A GB 1288656 A GB1288656 A GB 1288656A GB 836008 A GB836008 A GB 836008A
Authority
GB
United Kingdom
Prior art keywords
screen
plates
colour
focusing
strips
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
GB12886/56A
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27054786&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB836008(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Publication of GB836008A publication Critical patent/GB836008A/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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/702—Convergence correction arrangements therefor
    • 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
    • H01J29/003—Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
    • 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
    • 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
    • H01J31/205—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 electron beams in delta configuration
    • 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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • H01J9/2272—Devices for carrying out the processes, e.g. light houses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
    • H01J2229/003—Preventing or cancelling fields entering the enclosure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/56—Correction of beam optics
    • H01J2229/568—Correction of beam optics using supplementary correction devices
    • H01J2229/5681—Correction of beam optics using supplementary correction devices magnetic
    • H01J2229/5687—Auxiliary coils

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

836,008. Cathode-ray tubes. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 26, 1956 [April 27, 1955], No. 12886/56. Class 39(1). A " flat " cathode-ray tube of the type described in Specifications 794,257 and 801,841 in which an electron beam is deflected out of a plane parallel and adjacent to the fluorescent screen into impingement with it, is adapted for colour television by providing colour strips on the screen. In Fig. 5 two colour strips 69, 70 are on one side of a transparent support plate 66, the other surface of the plate is coated with a transparent third colour 68. Two beams 64, 65 travel parallel to the top edge of the screen and are deflected by horizontal sweep deflection plates 67 to either side of the screen. Focusing and accelerating plates 71, 72; 71a, 72a are provided for each beam. Transparent plates 73, 74 provide the vertical sweep deflectors. Two sets of grids 75, 76 adjacent the colour strips 69, 70 form electrostatic lenses for supplementary focusing and registration. A single gun may replace guns 62, 63 ; the single beam is switched to either side of the screen. In alternative embodiments, three sets of colour strips may be provided, all on one side of the screen, the focusing and registration grids may or may not be provided, and a single gun 114, Fig. 8, may direct the beam 117 towards the screen instead of along one edge. Plates 115 provide the horizontal sweep, and plates 118, 119 the vertical sweep. Plates 116 switch the beam from one side of the screen to the other. Light filters may be used in association with fluorescent material emitting polychromatic light.
GB12886/56A 1955-04-27 1956-04-26 Improvements in or relating to cathode ray tubes Expired GB836008A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US504287A US3222172A (en) 1955-04-27 1955-04-27 Method for making color television picture tubes
US600545A US3179836A (en) 1955-04-27 1956-07-27 Compensator for earth's magnetic field by color dot displacement

Publications (1)

Publication Number Publication Date
GB836008A true GB836008A (en) 1960-06-01

Family

ID=27054786

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12886/56A Expired GB836008A (en) 1955-04-27 1956-04-26 Improvements in or relating to cathode ray tubes

Country Status (5)

Country Link
US (2) US3222172A (en)
DE (1) DE1017647B (en)
FR (1) FR1148169A (en)
GB (1) GB836008A (en)
NL (1) NL206671A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3514208A (en) * 1967-01-30 1970-05-26 Admiral Corp Aperture mask inspection apparatus
US3527652A (en) * 1967-02-17 1970-09-08 Victor Company Of Japan Method of producing a phosphor dot screen for a color picture tube by an electron beam printing
GB1350667A (en) * 1970-07-11 1974-04-18 Sony Corp Method of making colour screens
BE793999A (en) * 1972-01-14 1973-05-02 Rca Corp METHOD OF MANUFACTURING MASK-TYPE IMAGE TUBES FOR COLOR TELEVISION

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733366A (en) * 1956-01-31 Grimm ctal
NL158008B (en) * 1950-04-28 Ibm HOLOGRAPHIC MEMORY.
GB713908A (en) * 1951-09-26 1954-08-18 Philco Corp Cathode-ray tubes and methods of manufacturing the same
US2755402A (en) * 1953-09-28 1956-07-17 Rca Corp Color kinescopes of the masked-target dot-screen variety
US2767457A (en) * 1954-11-01 1956-10-23 Rca Corp Color kinescopes and methods of making same
BE544830A (en) * 1955-02-01
US2917276A (en) * 1955-02-28 1959-12-15 Orenda Engines Ltd Segmented stator ring assembly

Also Published As

Publication number Publication date
DE1017647B (en) 1957-10-17
US3222172A (en) 1965-12-07
NL206671A (en)
FR1148169A (en) 1957-12-04
US3179836A (en) 1965-04-20

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