GB721523A - Display surface for color television tubes - Google Patents

Display surface for color television tubes

Info

Publication number
GB721523A
GB721523A GB32576/52A GB3257652A GB721523A GB 721523 A GB721523 A GB 721523A GB 32576/52 A GB32576/52 A GB 32576/52A GB 3257652 A GB3257652 A GB 3257652A GB 721523 A GB721523 A GB 721523A
Authority
GB
United Kingdom
Prior art keywords
strips
colour
grid
screen
wires
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
GB32576/52A
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.)
Chromatic Television Laboratories Inc
Original Assignee
Chromatic Television Laboratories Inc
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
Priority claimed from US265366A external-priority patent/US2669675A/en
Application filed by Chromatic Television Laboratories Inc filed Critical Chromatic Television Laboratories Inc
Publication of GB721523A publication Critical patent/GB721523A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • 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
    • H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching
    • H01J29/803—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching for post-acceleration or post-deflection, e.g. for colour switching
    • H01J29/806—Electron lens mosaics, e.g. fly's eye lenses, colour selection lenses
    • 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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/0022—Manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture
    • H01J2893/0022—Manufacture
    • H01J2893/0024—Planar grids

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

721,523. Colour television tubes. CHROMATIC TELEVISION LABORATORIES, Inc. Dec. 23, 1952 [Jan. 8, 1952]. No. 32576/52. Class 39 (1). A luminescent screen for a colour television tube comprises a supporting base, a number of spaced phosphor strips of substantially uniform width deposited on the base and extending across the base in one dimension, the strips being adapted to luminesce in one primary colour, and intermediate strips substantially filling the spaces between the first strips, the intermediate strips being comprised of alternate quadrilateral areas of phosphors luminescent in the other two primary colours. In one embodiment, Fig. 3, the continuous strips G are of green fluorescent material and the other strips are divided into blue fluorescent areas B and red fluorescent areas R. In part of the screen there may be provided a grid comprising four sets of conductors 27, 27<SP>1</SP>, 35, 35<SP>1</SP>, Fig. 2, the four sets being insulated from each other and serving to focus the beam and to deflect it to the required fluorescent area. The fluorescent material is preferably coated with a metallic layer which forms a lens in combination with the grid wires. Preferably the potential between the grid and the screen is three times that between the cathode and the grid; since the horizontal wires 35 must be spaced from the vertical wires 27 their potentials relative to the screen should not be equal but should be proportional to their distances from'the screen. The electron beam will normally impinge on the points where the phosphors meet; sine waves 90 degrees out of phase applied to the grid wires cause the spot to rotate about these points; since the beam will then cover twice as much of the green phosphor as of the other two phosphors this would produce an unsaturated green colour but by applying a fixed bias between wires 27 and 27' a white colour may be produced. By keying the beam in synchronism with the spinning of the focal spot any colour may be produced. In another embodiment, Fig. 5, the continuous strips B are of blue phosphor and the grid wires 65, 67 lie over the boundaries between the phosphors; colour selection is obtained by using a tube with three electron guns, Fig. 4 (not shown).
GB32576/52A 1952-01-08 1952-12-23 Display surface for color television tubes Expired GB721523A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US265366A US2669675A (en) 1952-01-08 1952-01-08 Display surface for color television tubes
US331200A US2824251A (en) 1952-01-08 1953-01-14 Method and apparatus for fabricating grid structures for cathode-ray tubes

Publications (1)

Publication Number Publication Date
GB721523A true GB721523A (en) 1955-01-05

Family

ID=26951154

Family Applications (2)

Application Number Title Priority Date Filing Date
GB32576/52A Expired GB721523A (en) 1952-01-08 1952-12-23 Display surface for color television tubes
GB35586/53A Expired GB757811A (en) 1952-01-08 1953-12-22 Method and apparatus for fabricating grid structures for cathode ray tubes

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB35586/53A Expired GB757811A (en) 1952-01-08 1953-12-22 Method and apparatus for fabricating grid structures for cathode ray tubes

Country Status (2)

Country Link
US (1) US2824251A (en)
GB (2) GB721523A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260853A (en) * 1991-10-22 1993-04-28 Gec Ferranti Defence Syst Colour display screens

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955348A (en) * 1954-09-13 1960-10-11 Wesley P Healy Color television screen and method of producing same
US2998033A (en) * 1957-02-12 1961-08-29 Sylvania Electric Prod Apparatus for producing cathode ray tubes
US3159188A (en) * 1962-03-01 1964-12-01 Motorola Inc Method of supplying wire for mounting in electronic units
FR1407802A (en) * 1964-06-25 1965-08-06 Cft Comp Fse Television Improvements to flat grids for cathode ray tubes and their manufacturing processes
US3714689A (en) * 1970-12-14 1973-02-06 Science Accessories Corp Apparatus for making spark chamber wire arrays
NL7701910A (en) * 1977-02-23 1978-08-25 Philips Nv LOW-PRESSURE GAS DISCHARGE LAMP.
US4630652A (en) * 1985-07-01 1986-12-23 Dieterich Frank L Method for forming a flat band of parallel, contiguous strands
US6604974B2 (en) * 2000-12-22 2003-08-12 Thomson Licensing S.A. Method and apparatus for applying crosswires to a tension focus mask

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB600257A (en) * 1944-12-21 1948-04-05 Herbert Edward Holman Improvements in or relating to the manufacture of grids for use in electron discharge devices
US1934097A (en) * 1929-04-29 1933-11-07 Telefunken Gmbh Manufacture of grid electrodes
US2182968A (en) * 1935-02-28 1939-12-12 Bell Telephone Labor Inc Method of making electrical connections
US2194551A (en) * 1936-06-25 1940-03-26 Emi Ltd Means and method of producing flat surfaces
US2282392A (en) * 1941-06-06 1942-05-12 Bell Telephone Labor Inc Electron discharge device
US2397233A (en) * 1943-12-14 1946-03-26 Philco Radio & Television Corp Grid structure for vacuum tubes and the like
US2463535A (en) * 1946-03-22 1949-03-08 Bell Telephone Labor Inc Electron discharge device
US2446791A (en) * 1946-06-11 1948-08-10 Rca Corp Color television tube
US2530538A (en) * 1948-12-18 1950-11-21 Bell Telephone Labor Inc Vernier pulse code communication system
US2695372A (en) * 1951-10-23 1954-11-23 Chromatic Television Lab Inc Grid structure for cathode-ray tubes
US2653263A (en) * 1952-01-08 1953-09-22 Chromatic Television Lab Inc Color control grid structure for cathode-ray tubes
US2683833A (en) * 1952-09-02 1954-07-13 Chromatic Television Lab Inc Electrode structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260853A (en) * 1991-10-22 1993-04-28 Gec Ferranti Defence Syst Colour display screens

Also Published As

Publication number Publication date
GB757811A (en) 1956-09-26
US2824251A (en) 1958-02-18

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