IT1245140B - Metodo di fabbricazione di uno schermo fosforico per un tubo a raggi catodici - Google Patents

Metodo di fabbricazione di uno schermo fosforico per un tubo a raggi catodici

Info

Publication number
IT1245140B
IT1245140B ITMI910312A ITMI910312A IT1245140B IT 1245140 B IT1245140 B IT 1245140B IT MI910312 A ITMI910312 A IT MI910312A IT MI910312 A ITMI910312 A IT MI910312A IT 1245140 B IT1245140 B IT 1245140B
Authority
IT
Italy
Prior art keywords
phosphoric
screen
ray tube
cathode ray
manufacture
Prior art date
Application number
ITMI910312A
Other languages
English (en)
Inventor
Himanshu M Patel
Antimo Pezzulo
Original Assignee
Videocolor Spa
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 Videocolor Spa filed Critical Videocolor Spa
Priority to ITMI910312A priority Critical patent/IT1245140B/it
Publication of ITMI910312A0 publication Critical patent/ITMI910312A0/it
Priority to DE4202701A priority patent/DE4202701A1/de
Priority to CN92100703.5A priority patent/CN1065549A/zh
Priority to PL29336792A priority patent/PL293367A1/xx
Publication of ITMI910312A1 publication Critical patent/ITMI910312A1/it
Application granted granted Critical
Publication of IT1245140B publication Critical patent/IT1245140B/it

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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

La presente invenzione si riferisce ad un metodo di fabbricazione di uno schermo fosforico per un tubo a raggi catodici (CRT) e riguarda, in modo più specifico, un metodo di preparazione di una sospensione fosforica utilizzata per la realizzazione dello schermo del tubo a raggi catodici. Il metodo include lo stadio di miscelazione di un materiale fotosensibile appropriato, di un sensibilizzante bicromatico, di un fosforo luminescente e di un intensificatore della migrazione degli ioni cromo. L'aggiunta dell'intensificatore della migrazione degli ioni cromo aumenta le caratteristiche di scorrimento della sospensione fosforica, in modo tale da ottenere una maggior uniformità dello schermo. Inoltre, il risultante strato fosforico fotosensibile risulta notevolmente sensibile alla luce ma presenta una minor sensibilità termica ed una maggior resistenza all'indurimento al buio, rispetto agli strati ottenuti in accordo con la tecnologia anteriore.
ITMI910312A 1991-02-07 1991-02-07 Metodo di fabbricazione di uno schermo fosforico per un tubo a raggi catodici IT1245140B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITMI910312A IT1245140B (it) 1991-02-07 1991-02-07 Metodo di fabbricazione di uno schermo fosforico per un tubo a raggi catodici
DE4202701A DE4202701A1 (de) 1991-02-07 1992-01-31 Verfahren zum herstellen eines leuchtschirms fuer eine kathodenstrahlroehre
CN92100703.5A CN1065549A (zh) 1991-02-07 1992-02-01 制造阴极射线管荧光屏的方法
PL29336792A PL293367A1 (en) 1991-02-07 1992-02-03 Method of making image tube luminescent screen and luminophore suspension therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI910312A IT1245140B (it) 1991-02-07 1991-02-07 Metodo di fabbricazione di uno schermo fosforico per un tubo a raggi catodici

Publications (3)

Publication Number Publication Date
ITMI910312A0 ITMI910312A0 (it) 1991-02-07
ITMI910312A1 ITMI910312A1 (it) 1992-08-07
IT1245140B true IT1245140B (it) 1994-09-13

Family

ID=11358469

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI910312A IT1245140B (it) 1991-02-07 1991-02-07 Metodo di fabbricazione di uno schermo fosforico per un tubo a raggi catodici

Country Status (4)

Country Link
CN (1) CN1065549A (it)
DE (1) DE4202701A1 (it)
IT (1) IT1245140B (it)
PL (1) PL293367A1 (it)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269838A (en) * 1963-03-18 1966-08-30 Rca Corp Method of making luminescent screens for cathode ray tubes
NL6602797A (it) * 1966-03-04 1967-09-05
DE3538167A1 (de) * 1985-10-26 1987-04-30 Standard Elektrik Lorenz Ag Farbbildwiedergabevorrichtung

Also Published As

Publication number Publication date
CN1065549A (zh) 1992-10-21
PL293367A1 (en) 1992-09-21
ITMI910312A1 (it) 1992-08-07
DE4202701A1 (de) 1992-08-20
ITMI910312A0 (it) 1991-02-07

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Legal Events

Date Code Title Description
0001 Granted