GB1502709A - Fluorescent compositions and low-velocity electron excited fluorescent display devices utilizing the same - Google Patents

Fluorescent compositions and low-velocity electron excited fluorescent display devices utilizing the same

Info

Publication number
GB1502709A
GB1502709A GB41/77A GB4177A GB1502709A GB 1502709 A GB1502709 A GB 1502709A GB 41/77 A GB41/77 A GB 41/77A GB 4177 A GB4177 A GB 4177A GB 1502709 A GB1502709 A GB 1502709A
Authority
GB
United Kingdom
Prior art keywords
fluorescent
phosphor
firing
low
same
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
GB41/77A
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
Priority claimed from JP8220275A external-priority patent/JPS5210878A/en
Priority claimed from JP8220175A external-priority patent/JPS5210877A/en
Priority claimed from JP8194875A external-priority patent/JPS5210875A/en
Priority claimed from JP8194975A external-priority patent/JPS5210876A/en
Application filed by Dai Nippon Toryo KK filed Critical Dai Nippon Toryo KK
Publication of GB1502709A publication Critical patent/GB1502709A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/64—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing aluminium
    • C09K11/641—Chalcogenides
    • C09K11/642—Chalcogenides with zinc or cadmium
    • 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
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/0805—Chalcogenides
    • 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
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/7729—Chalcogenides
    • C09K11/7731—Chalcogenides with alkaline earth metals
    • 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
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/7767—Chalcogenides
    • C09K11/7769—Oxides
    • C09K11/7771—Oxysulfides
    • 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
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
    • C09K11/7794—Vanadates; Chromates; Molybdates; Tungstates

Landscapes

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

Abstract

1502709 Luminescent compositions DAI NIPPON TORYO CO Ltd 29 June 1976 [3 July 1975 (2)] 00041/77 Divided out of 1502707 Heading C4S A fluorescent composition contains (i) In 2 O 3 and (ii) a phosphor of Y 2 O 2 S:Eu, Y 2 O 3 :Eu or YVO 4 :Eu or a mixture of two or more of the phosphors, the two components (i) and (ii) being in a weight ratio in the range 1:9 to 9:1. Applications, including details of low velocity (e.g. < 100 eV) electron beam fluorescent devices (Figs. 1 and 2, not shown) which may produce multicolour displays, types of In 2 O 3 and pretreatments, &c. are as in the parent Specification. The Y 2 O 2 S phosphor may be prepared by adding S and Na 2 CO 3 as a flux to a mix of Eu 2 O 3 and Y 2 O 3 then firing in air at 1200‹ to 1300‹ C. Y 2 O 3 phosphor may be formed by adding one of specified boric compounds as flux to Eu 2 O 3 and Y 2 O 3 and firing at 1300‹ to 1400‹ C. YVO 4 may be formed by mixing V 2 O 5 with Eu 2 O 3 and Y 2 O 3 and firing at 1000‹ to 1100‹ C. in air. The Y 2 O 3 and Eu 2 O 3 mix may be mechanically formed or by dissolving ingredients in nitric acid and adding oxalic acid to produce oxalate coprecipitates which are then pyrolysed. Emission characteristics are detailed (Figs. 4a-4c, 5a-5c, not shown).
GB41/77A 1975-07-03 1976-06-29 Fluorescent compositions and low-velocity electron excited fluorescent display devices utilizing the same Expired GB1502709A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP8220275A JPS5210878A (en) 1975-07-03 1975-07-03 Luminous compositions
JP8220175A JPS5210877A (en) 1975-07-03 1975-07-03 Red luminous fluorescent display tube excited by electron beam of low velocity
JP8194875A JPS5210875A (en) 1975-07-04 1975-07-04 Luminous compositions
JP8194975A JPS5210876A (en) 1975-07-04 1975-07-04 Green luminous fluorescent display tube excited by electron beam of lo w velocity

Publications (1)

Publication Number Publication Date
GB1502709A true GB1502709A (en) 1978-03-01

Family

ID=27466639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41/77A Expired GB1502709A (en) 1975-07-03 1976-06-29 Fluorescent compositions and low-velocity electron excited fluorescent display devices utilizing the same

Country Status (1)

Country Link
GB (1) GB1502709A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009012651A1 (en) * 2007-07-23 2009-01-29 Rhodia China Co., Ltd. Process for the preparation of an yttrium and rare earth mixed oxide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009012651A1 (en) * 2007-07-23 2009-01-29 Rhodia China Co., Ltd. Process for the preparation of an yttrium and rare earth mixed oxide

Similar Documents

Publication Publication Date Title
US2457054A (en) Luminescent materials for electric discharge devices
GB1026043A (en) Fluorescent rare earth compounds
EP1754767A1 (en) Chemiluminescent compositions
US3758413A (en) Terbium activated yttrium silicate phosphors
GB1289176A (en)
GB1222909A (en) Phosphors
GB1502709A (en) Fluorescent compositions and low-velocity electron excited fluorescent display devices utilizing the same
GB1501672A (en) Electron tubes
GB941166A (en) Phosphors
US3623994A (en) Very short luminescent decay-time phosphor
GB578272A (en) Improvements in luminescent materials
GB1193320A (en) Alkaline Earth Tellurate Phosphors
GB1271388A (en) Method of making phosphors
US2714095A (en) Magnesium boroarsenate phosphor
SU118929A1 (en) The method of obtaining double fluoride cathodolumines
KR19990007107A (en) Rare earth borate phosphor
US2957829A (en) Preparation of luminescent material
GB1502708A (en) Fluorescent compositions and low-velocity electron excited fluorescent display devices utilizing the same
US2736712A (en) Luminescent magnesium oxide
GB1498405A (en) Phosphors
GB1216565A (en) Polycrystalline phosphors
GB1532465A (en) Phosphors
JPS585221B2 (en) Luminescent composition and slow electron beam excitation fluorescent display tube
JPS5940869B2 (en) luminescent composition
JPS5418484A (en) Luminous composition and fluorescent display tube excited by low speed electron beam

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19960628