GB1168074A - Improvements in or relating to Surface Coated Phosphor Particles - Google Patents

Improvements in or relating to Surface Coated Phosphor Particles

Info

Publication number
GB1168074A
GB1168074A GB3895866A GB3895866A GB1168074A GB 1168074 A GB1168074 A GB 1168074A GB 3895866 A GB3895866 A GB 3895866A GB 3895866 A GB3895866 A GB 3895866A GB 1168074 A GB1168074 A GB 1168074A
Authority
GB
United Kingdom
Prior art keywords
oxide
coated
mixing
phosphor
particles
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
GB3895866A
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.)
Dai Nippon Toryo KK
Original Assignee
Dai Nippon Toryo KK
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 Dai Nippon Toryo KK filed Critical Dai Nippon Toryo KK
Publication of GB1168074A publication Critical patent/GB1168074A/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
    • H01J29/30—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines
    • H01J29/32—Luminescent screens with luminescent material discontinuously arranged, e.g. in dots, in lines with adjacent dots or lines of different luminescent material, e.g. for colour television
    • 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, e.g. electroluminescent, chemiluminescent materials
    • 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
    • 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
    • H01J29/225—Luminescent screens characterised by the binder or adhesive for securing the luminescent material to its support, e.g. vessel photosensitive adhesive
    • 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

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Luminescent Compositions (AREA)

Abstract

1,168,074. Luminescent materials. DAI NIPPON TORYO K.K. 31 Aug., 1966 [31 Aug., 1965; 12 July, 1966], No. 38958/66. Heading C4S. Rare earth oxide phosphor particles have a surface coating of an acidic oxide of B, Al, Ti, V, Ga, Ge, As, Nb, Mo, Sn, Sb, Ta or W. The coating may be applied by mixing preferably in a liquid medium the phosphor and the oxide or a compound which on heating forms the oxide, e.g. hydroxides, carbonates, sulphides and NH 4 oxyacidates. The mixture is heated causing the oxide to melt; some of the oxide may diffuse on to the surface of the phosphor particle, reacting to form an adhering intermediate layer. The particles may be coated by mixing the oxide suspended in an aqueous or non-aqueous dispersion and the particles and then drying. An hydroxide can first be deposited by adding a solution of the salt to a phosphor suspension and adjusting the pH value, then heating to convert the hydroxide to oxide. A further method is to add the oxide to a slurry comprising an aqueous phosphor suspension and PVA. Y 2 O 3 : Eu is coated with Wo 3 , B2O 3 or Ga 2 O 3 by mixing and heating; formation of Y tungstate and Y gallate are referred to. Gd 2 O 3 : Eu is coated with MoO 3 by mixing with water to form a paste and then drying. Gd 2 O 3 : Eu is coated with As 2 O 3 by mixing with water and PVA. Slurries containing the coated particles were prepared using PVA and NH4 bicromate sensitizer for photo-printing colour TV screens.
GB3895866A 1965-08-31 1966-08-31 Improvements in or relating to Surface Coated Phosphor Particles Expired GB1168074A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5351965 1965-08-31
JP4555366 1966-07-12

Publications (1)

Publication Number Publication Date
GB1168074A true GB1168074A (en) 1969-10-22

Family

ID=26385562

Family Applications (3)

Application Number Title Priority Date Filing Date
GB3895866A Expired GB1168074A (en) 1965-08-31 1966-08-31 Improvements in or relating to Surface Coated Phosphor Particles
GB2629369A Expired GB1175039A (en) 1965-08-31 1966-11-30 Improvements in or relating to Surface Coated Phosphor Particles
GB2787769A Expired GB1175040A (en) 1965-08-31 1966-11-30 Improvements in or relating to surface coated phosphor particles

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB2629369A Expired GB1175039A (en) 1965-08-31 1966-11-30 Improvements in or relating to Surface Coated Phosphor Particles
GB2787769A Expired GB1175040A (en) 1965-08-31 1966-11-30 Improvements in or relating to surface coated phosphor particles

Country Status (2)

Country Link
GB (3) GB1168074A (en)
NL (1) NL144086B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021588A (en) * 1976-01-23 1977-05-03 Rca Corporation Method for preparing filter-coated phosphor particles
US4452830A (en) * 1979-09-14 1984-06-05 Mitsubishi Kinzoku Kabushiki Kaisha Electroconductive powder and process for production thereof
GB2255100A (en) * 1991-03-06 1992-10-28 Nichia Kagaku Kogyo Kk Coated phosphor particles
US5185207A (en) * 1990-08-12 1993-02-09 Nichia Kagaku Kogyo K.K. Phosphor for cathode ray tube and surface treatment method for the phosphor
US5382452A (en) * 1992-12-18 1995-01-17 E. I. Du Pont De Nemours And Company Luminescent materials prepared by coating luminescent compositions onto substrate particles
US5518808A (en) * 1992-12-18 1996-05-21 E. I. Du Pont De Nemours And Company Luminescent materials prepared by coating luminescent compositions onto substrate particles
US5643674A (en) * 1992-12-18 1997-07-01 E. I. Du Pont De Nemours And Company Luminescent materials prepared by coating luminescent compositions onto substrate particles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW261631B (en) * 1993-08-03 1995-11-01 Futaba Denshi Kogyo Kk
CN101899294B (en) * 2010-06-28 2014-04-02 海洋王照明科技股份有限公司 Fluorescent powder material and preparation method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021588A (en) * 1976-01-23 1977-05-03 Rca Corporation Method for preparing filter-coated phosphor particles
US4452830A (en) * 1979-09-14 1984-06-05 Mitsubishi Kinzoku Kabushiki Kaisha Electroconductive powder and process for production thereof
US5185207A (en) * 1990-08-12 1993-02-09 Nichia Kagaku Kogyo K.K. Phosphor for cathode ray tube and surface treatment method for the phosphor
GB2255100A (en) * 1991-03-06 1992-10-28 Nichia Kagaku Kogyo Kk Coated phosphor particles
GB2255100B (en) * 1991-03-06 1995-04-12 Nichia Kagaku Kogyo Kk Phosphor particles coated with silica and at least one of indium, zirconium and antimony for cathode-ray tube and surface treatment method for the phosphor
US5382452A (en) * 1992-12-18 1995-01-17 E. I. Du Pont De Nemours And Company Luminescent materials prepared by coating luminescent compositions onto substrate particles
US5518808A (en) * 1992-12-18 1996-05-21 E. I. Du Pont De Nemours And Company Luminescent materials prepared by coating luminescent compositions onto substrate particles
US5643674A (en) * 1992-12-18 1997-07-01 E. I. Du Pont De Nemours And Company Luminescent materials prepared by coating luminescent compositions onto substrate particles

Also Published As

Publication number Publication date
DE1592860B2 (en) 1972-08-17
NL144086B (en) 1974-11-15
GB1175039A (en) 1969-12-23
DE1592860A1 (en) 1971-01-28
GB1175040A (en) 1969-12-23
NL6612277A (en) 1966-11-25

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)