GB828026A - Method of forming display screens for cathode ray tubes - Google Patents

Method of forming display screens for cathode ray tubes

Info

Publication number
GB828026A
GB828026A GB27152/57A GB2715257A GB828026A GB 828026 A GB828026 A GB 828026A GB 27152/57 A GB27152/57 A GB 27152/57A GB 2715257 A GB2715257 A GB 2715257A GB 828026 A GB828026 A GB 828026A
Authority
GB
United Kingdom
Prior art keywords
alcohol
layer
cathode ray
light
sensitive
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
GB27152/57A
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products 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
Application filed by Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB828026A publication Critical patent/GB828026A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

828,026. Luminescent screens. SYLVANIA ELECTRIC PRODUCTS Inc. Aug. 28, 1957 [Aug. 28, 1956], No. 27152/57. Class 39(1). An image display screen is formed on the viewing panel of a cathode ray tube by coating the panel with light-sensitive alcohol, rinsing it with solvent for the alcohol, depositing a layer of light-sensitive alcohol and a phosphor on the panel, masking portions of the layer, exposing the unmasked portion of the layer to light and removing the unexposed portion of the layer with a solvent. The sensitive layer comprises a polyvinyl alcohol and ammonium dichromate in solution in ethyl alcohol and the preliminary coating preferably comprises polyvinyl alcohol in aqueous solution containing between 0À1 and 0À8% by weight of the alcohol. Specification 804,958 is referred to. Reference has been directed by the Comptroller to Specification 713,908.
GB27152/57A 1956-08-28 1957-08-28 Method of forming display screens for cathode ray tubes Expired GB828026A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US828026XA 1956-08-28 1956-08-28

Publications (1)

Publication Number Publication Date
GB828026A true GB828026A (en) 1960-02-10

Family

ID=22173554

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27152/57A Expired GB828026A (en) 1956-08-28 1957-08-28 Method of forming display screens for cathode ray tubes

Country Status (1)

Country Link
GB (1) GB828026A (en)

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