GB806510A - Improvements in or relating to colour-television cathode-ray tubes - Google Patents

Improvements in or relating to colour-television cathode-ray tubes

Info

Publication number
GB806510A
GB806510A GB25207/57A GB2520757A GB806510A GB 806510 A GB806510 A GB 806510A GB 25207/57 A GB25207/57 A GB 25207/57A GB 2520757 A GB2520757 A GB 2520757A GB 806510 A GB806510 A GB 806510A
Authority
GB
United Kingdom
Prior art keywords
strips
electrodes
colour
aug
phosphors
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
GB25207/57A
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 Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB806510A publication Critical patent/GB806510A/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
    • H01J29/18—Luminescent screens
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2231/00—Cathode ray tubes or electron beam tubes
    • H01J2231/12—CRTs having luminescent screens
    • H01J2231/121—Means for indicating the position of the beam, e.g. beam indexing

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

806,510. Colour television tubes. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 9, 1957. [Aug. 13, 1956], No. 25207/57. Class 39(1). A cathode ray tube having grouped, substantially parallel strips of phosphor luminescing in various colours on electron impact is provided in each group, or a multiple thereof, with the same number of indexing strips of a material whose specific conductivity varies upon electron impact, these strips being arranged between two electrodes. One of the particular phosphors itself may be of such a material, or the material may be mixed with a particular colour phosphor. Alternatively the material may be located in separate strips 13, Fig. 5, between each group of colour phosphors, 7, 9, 11. As shown the strips 13 are provided with individual electrode strips 43, 45 of which the electrode strips 43 are electron pervious and the electrodes 45 are of conducting transparent material, a common supply wire being connected to each set 43, 45 and the pulses induced by the scanning beam appearing as an increased current in the resistor 53. Instead of individual electrodes 43, 45 either set, or both, may be united to form an uninterrupted layer. The electrodes 43 may be of aluminium and the electrodes 45 of tin oxide.
GB25207/57A 1956-08-13 1957-08-09 Improvements in or relating to colour-television cathode-ray tubes Expired GB806510A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL806510X 1956-08-13

Publications (1)

Publication Number Publication Date
GB806510A true GB806510A (en) 1958-12-23

Family

ID=19836621

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25207/57A Expired GB806510A (en) 1956-08-13 1957-08-09 Improvements in or relating to colour-television cathode-ray tubes

Country Status (5)

Country Link
US (1) US2926283A (en)
DE (1) DE1041525B (en)
FR (1) FR1192944A (en)
GB (1) GB806510A (en)
NL (2) NL110942C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122415A (en) * 1982-06-04 1984-01-11 Marconi Avionics Colour cathode ray indexing tubes and display systems using such tubes

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1270077B (en) * 1966-11-10 1968-06-12 Werk Fernsehelektronik Veb Procedure for avoiding color defects in color television picture tubes
US4107570A (en) * 1973-03-12 1978-08-15 Washburn Clayton A Cathode ray tube indexing structures
DE3006943A1 (en) * 1980-02-25 1981-09-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Colour TV tube with index targetting control - has light emitting reference strips between three colour phosphors and photocells to detect emissions
US4871949A (en) * 1987-01-23 1989-10-03 Albert Abramson Cathode ray tube

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB417679A (en) * 1933-04-27 1934-10-10 Cossor Ltd A C Improvements in or relating to fluorescent screens for use in television systems
US2446440A (en) * 1947-01-28 1948-08-03 Rca Corp Color television tube
US2725420A (en) * 1951-07-20 1955-11-29 Rca Corp Color television image reproduction
US2723361A (en) * 1952-01-02 1955-11-08 Du Mont Allen B Lab Inc Cathode ray tube
US2768318A (en) * 1952-10-03 1956-10-23 Philco Corp Screen structure for cathode ray tubes
US2792522A (en) * 1953-09-18 1957-05-14 Westinghouse Electric Corp Color television tube
US2767346A (en) * 1953-10-05 1956-10-16 Hoyt Karl Robert Apparatus and method for regulating television target potential
US2790930A (en) * 1955-02-21 1957-04-30 Meguer V Kalfaian Color television image tube and system therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122415A (en) * 1982-06-04 1984-01-11 Marconi Avionics Colour cathode ray indexing tubes and display systems using such tubes

Also Published As

Publication number Publication date
NL110942C (en)
NL209771A (en)
DE1041525B (en) 1958-10-23
US2926283A (en) 1960-02-23
FR1192944A (en) 1959-10-29

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