GB469776A - Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge - Google Patents

Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge

Info

Publication number
GB469776A
GB469776A GB379836A GB379836A GB469776A GB 469776 A GB469776 A GB 469776A GB 379836 A GB379836 A GB 379836A GB 379836 A GB379836 A GB 379836A GB 469776 A GB469776 A GB 469776A
Authority
GB
United Kingdom
Prior art keywords
electric discharge
pure
paste
hour
heated
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
GB379836A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB379836A priority Critical patent/GB469776A/en
Publication of GB469776A publication Critical patent/GB469776A/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
    • C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon

Landscapes

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

Abstract

469,776. Luminescent screens for cathode-ray tubes. GENERAL ELECTRIC CO., Ltd., and RANDALL, J. T. Feb. 7, 1936, No. 3798. [Class 98 (i.)] The screen coating comprises calcium silicate prepared as follows. - Pure silica in gel form is mixed with pure calcium carborate in proportions to yield mainly the compound CaO. SiO2, slight excess (not exceeding 10 per cent) of either lime or silica being permissible. The mixture is formed into a paste with pure water, sufficient manganese nitrate is added to give 0À5 per cent manganese in the final product, the paste is dried at 180‹ C. for 1 hour, ground, heated for 30 minutes at 1000‹ C. in air, reground, and heated for 1 hour at 1250‹ C. in air. A white powder results which may require grinding and sieving before use. Reference is made to the known use of two forms of natural calcium silicate (wollastonite).
GB379836A 1936-02-07 1936-02-07 Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge Expired GB469776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB379836A GB469776A (en) 1936-02-07 1936-02-07 Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB379836A GB469776A (en) 1936-02-07 1936-02-07 Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge

Publications (1)

Publication Number Publication Date
GB469776A true GB469776A (en) 1937-08-03

Family

ID=9765093

Family Applications (1)

Application Number Title Priority Date Filing Date
GB379836A Expired GB469776A (en) 1936-02-07 1936-02-07 Improvements in or relating to combinations of electric discharge devices and materials excited to luminescence by the electric discharge

Country Status (1)

Country Link
GB (1) GB469776A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471082A (en) * 1946-03-28 1949-05-24 Sylvania Electric Prod Calcium cadmium silicate phosphor
DE1007908B (en) * 1953-05-18 1957-05-09 Ets Claude Paz & Silva Process for producing a phosphor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471082A (en) * 1946-03-28 1949-05-24 Sylvania Electric Prod Calcium cadmium silicate phosphor
DE1007908B (en) * 1953-05-18 1957-05-09 Ets Claude Paz & Silva Process for producing a phosphor

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