GB656531A - Improvements relating to the manufacture of fluorescent screens - Google Patents

Improvements relating to the manufacture of fluorescent screens

Info

Publication number
GB656531A
GB656531A GB3047448A GB3047448A GB656531A GB 656531 A GB656531 A GB 656531A GB 3047448 A GB3047448 A GB 3047448A GB 3047448 A GB3047448 A GB 3047448A GB 656531 A GB656531 A GB 656531A
Authority
GB
United Kingdom
Prior art keywords
film
water
phosphor
manufacture
improvements relating
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
GB3047448A
Inventor
Leslie John Charles Bayford
Peter Seats
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB3047448A priority Critical patent/GB656531A/en
Publication of GB656531A publication Critical patent/GB656531A/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
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers

Landscapes

  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

A fluorescent screen for a cathode-ray tube is made by settling particles of a phosphor from a liquid suspension medium, e.g. water, on to the tube to form a fluorescent layer. A solution of a film-forming substance, e.g. nitro-cellulose in methyl-ethyl ketone, is then applied to the surface of the water, and the solvent is evaporated so as to leave a film of the nitro-cellulose on the water, which is then removed by siphoning or decanting so that the film is applied to the phosphor layer. The film is then coated with aluminium applied by evaporation and the screen is heated to decompose the film, the metal coating thus being applied to the phosphor.
GB3047448A 1948-11-24 1948-11-24 Improvements relating to the manufacture of fluorescent screens Expired GB656531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3047448A GB656531A (en) 1948-11-24 1948-11-24 Improvements relating to the manufacture of fluorescent screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3047448A GB656531A (en) 1948-11-24 1948-11-24 Improvements relating to the manufacture of fluorescent screens

Publications (1)

Publication Number Publication Date
GB656531A true GB656531A (en) 1951-08-22

Family

ID=10308243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3047448A Expired GB656531A (en) 1948-11-24 1948-11-24 Improvements relating to the manufacture of fluorescent screens

Country Status (1)

Country Link
GB (1) GB656531A (en)

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