GB1502708A - 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
GB1502708A
GB1502708A GB40/77A GB4077A GB1502708A GB 1502708 A GB1502708 A GB 1502708A GB 40/77 A GB40/77 A GB 40/77A GB 4077 A GB4077 A GB 4077A GB 1502708 A GB1502708 A GB 1502708A
Authority
GB
United Kingdom
Prior art keywords
phosphor
oxide
fluorescent
electron excited
low
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
GB40/77A
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 JP8060775A external-priority patent/JPS5210873A/en
Priority claimed from JP8060875A external-priority patent/JPS5210874A/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 GB1502708A publication Critical patent/GB1502708A/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
    • C09K11/0805—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
    • C09K11/64—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
    • C09K11/77—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)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Luminescent Compositions (AREA)

Abstract

1502708 Luminescent compositions DAI NIPPON TORYO CO Ltd 29 June 1976 [30 June 1975 (2)] 40/77 Divided out of 1502707 Heading C4S A blue emitting fluorescent composition contains indium oxide (In 2 O 3 ) powder and ZnS:Ag phosphor powder in a wt. ratio of 1:9 to 9:1 (e.g. 1:4 to 4:1 or 1/3). Activator concentrations are given. The phosphor may be produced by adding AgNO 3 to reagent grade ZnS and firing in a reducing atmosphere in the range 900‹ to 1200‹ C. Firing above or below 1020‹ C. produces a hexagonal or cubic structure respectively. The oxide and phosphor may be mechanically mixed. The oxide may be produced and treated as described in the parent Specification. Also described in the parent Specification are applications and low velocity (e.g. < 100 eV) electron excited fluorescent tubes, including deposition by sedimentation procedures and multiphosphor screens. The electrical conductivity of the In 2 O 3 is considered to reduce charging,
GB40/77A 1975-06-30 1976-06-29 Fluorescent compositions and low-velocity electron excited fluorescent display devices utilizing the same Expired GB1502708A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP8060775A JPS5210873A (en) 1975-06-30 1975-06-30 Luminous compositions
JP8060875A JPS5210874A (en) 1975-06-30 1975-06-30 Blue 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
GB1502708A true GB1502708A (en) 1978-03-01

Family

ID=27466455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40/77A Expired GB1502708A (en) 1975-06-30 1976-06-29 Fluorescent compositions and low-velocity electron excited fluorescent display devices utilizing the same

Country Status (1)

Country Link
GB (1) GB1502708A (en)

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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