GB697585A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB697585A
GB697585A GB30283/51A GB3028351A GB697585A GB 697585 A GB697585 A GB 697585A GB 30283/51 A GB30283/51 A GB 30283/51A GB 3028351 A GB3028351 A GB 3028351A GB 697585 A GB697585 A GB 697585A
Authority
GB
United Kingdom
Prior art keywords
liquid
film
screen
forming
bulb
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
GB30283/51A
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.)
Rauland Borg Corp
Original Assignee
Rauland Borg Corp
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 Rauland Borg Corp filed Critical Rauland Borg Corp
Publication of GB697585A publication Critical patent/GB697585A/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)
  • Luminescent Compositions (AREA)

Abstract

697,585. Luminescent screens. RAULAND CORPORATION. Dec. 28, 1951 [Dec. 29, 1950], No. 30283/51. Class 39(i). In making a cathode-ray tube in which the fluorescent screen is coated with an organic film on which a metal backing layer is deposited, the same charge of liquid is used for settling the screen and then forming the film. After the screen has settled, the bulb is tilted through a small angle A, and so maintained while the film-forming process is carried out. This is to prevent the film forming on a liquid surface which is smaller than the screen surface eventually to be covered after decanting off the liquid. The angle of tilt may be from 5 degrees to 20 degrees, depending on the configuration of the bulb and the amount of liquid, and is defined in terms of dimensions of the liquid surface produced. The least depth d of the liquid is similarly defined. Suitable compositions are given for the fluorescent screen,.the film solution, and the settling liquid: and the metal backing may be aluminium, lithium, beryllium, or magnesium. Specification 645,633 is referred to. Reference has been directed by the Comptroller to Specification 656,531.
GB30283/51A 1950-12-29 1951-12-28 Improvements in or relating to cathode ray tubes Expired GB697585A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US697585XA 1950-12-29 1950-12-29

Publications (1)

Publication Number Publication Date
GB697585A true GB697585A (en) 1953-09-23

Family

ID=22091031

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30283/51A Expired GB697585A (en) 1950-12-29 1951-12-28 Improvements in or relating to cathode ray tubes

Country Status (1)

Country Link
GB (1) GB697585A (en)

Similar Documents

Publication Publication Date Title
GB1406509A (en) Coating of workpieces
US2586304A (en) Protection of phosphors from attack by alkali vapors
GB1006062A (en) Improvements in or relating to colour image screens
GB559672A (en) Improvements in and relating to the deposition of substances on surfaces by vaporization
US2402900A (en) Liquid settling process
GB697585A (en) Improvements in or relating to cathode ray tubes
GB529777A (en) Improvements in or relating to television transmitting and like cathode ray tubes
US2690979A (en) Method of powder-coating television screens
US2960416A (en) Method of manufacturing screens for electron-discharge devices
McGee et al. High Quality Phosphor Screens for Cascade Image Intensifies
US2681293A (en) Manufacture of fluorescent screens for cathode-ray tubes
GB701867A (en) Improvements in or relating to cathode ray tubes
US2921863A (en) Settling of luminescent screens
US2710262A (en) Method of forming a phosphor screen
US2749252A (en) Method of applying an organic film to a phosphor layer
US2686734A (en) Method of coating water sensitive phosphor screens
US2758942A (en) Cathode-ray tube of the kind comprising a luminescent screen
US2726167A (en) Method of coating cathode ray tube
US2032761A (en) Fluorescent coating method
US2625493A (en) Method of manufacturing a reflective fluorescent screen
US2795514A (en) Method for improving the dry adhesion of a phosphor screen
GB822160A (en) Improvements in or relating to the manufacture of luminescent screens for cathode ray tubes
GB656531A (en) Improvements relating to the manufacture of fluorescent screens
GB618469A (en) Improvements in or relating to screens for use in electron discharge tubes and methods of forming such screens
KR930008617B1 (en) Manufacture of photoelectric screen