ES343297A1 - Fluorescent Film for Colour TV Picture Tube and Process of Preparing Same. - Google Patents

Fluorescent Film for Colour TV Picture Tube and Process of Preparing Same.

Info

Publication number
ES343297A1
ES343297A1 ES343297A ES343297A ES343297A1 ES 343297 A1 ES343297 A1 ES 343297A1 ES 343297 A ES343297 A ES 343297A ES 343297 A ES343297 A ES 343297A ES 343297 A1 ES343297 A1 ES 343297A1
Authority
ES
Spain
Prior art keywords
particles
coated
colour
picture tube
fluorescent film
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
ES343297A
Other languages
Spanish (es)
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics 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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Publication of ES343297A1 publication Critical patent/ES343297A1/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
    • H01J9/221—Applying luminescent coatings in continuous layers
    • 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
    • H01J29/22—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel
    • 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)
  • Luminescent Compositions (AREA)

Abstract

A colour TV tube fluorescent screen includes phosphor particles coated with 0À5-5À0% by weight of a mixture of either GeO 2 and SiOg or WO 3 and SiO 2 . The particles are coated by adding one of the mixtures to water glass, introducing the particles and heating. A coating slurry is prepared by dispersing the coated particles in an aqueous PVA solution with colloidal silica and photosensitive NH 4 bichromate. The colloidal silica, comprising SiO 2 particles covered with Na aluminate, is absorbed on the coated phosphor particles and acts as a protective dispersing agent. ZnS :Ag, (Zn,CdS:Ag and Y 2 0 3 :Eu phosphors are referred to.
ES343297A 1966-07-22 1967-07-21 Fluorescent Film for Colour TV Picture Tube and Process of Preparing Same. Expired ES343297A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4844366 1966-07-22

Publications (1)

Publication Number Publication Date
ES343297A1 true ES343297A1 (en) 1968-12-01

Family

ID=12803476

Family Applications (1)

Application Number Title Priority Date Filing Date
ES343297A Expired ES343297A1 (en) 1966-07-22 1967-07-21 Fluorescent Film for Colour TV Picture Tube and Process of Preparing Same.

Country Status (6)

Country Link
BE (1) BE701658A (en)
DE (1) DE1792729C2 (en)
ES (1) ES343297A1 (en)
GB (1) GB1188954A (en)
NL (1) NL6710099A (en)
SE (1) SE335180B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920010099B1 (en) * 1989-07-06 1992-11-14 삼성전관 주식회사 Process for the preparation of a fluorescent substance

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL110941C (en) * 1956-07-25

Also Published As

Publication number Publication date
DE1792729C2 (en) 1975-03-27
SE335180B (en) 1971-05-17
DE1592920A1 (en) 1971-02-04
GB1188954A (en) 1970-04-22
NL6710099A (en) 1968-01-23
BE701658A (en) 1968-01-02
DE1592920B2 (en) 1972-06-22
DE1792729B1 (en) 1972-10-26

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