ES200042A1 - Improvements in or relating to luminescent materials - Google Patents

Improvements in or relating to luminescent materials

Info

Publication number
ES200042A1
ES200042A1 ES0200042A ES200042A ES200042A1 ES 200042 A1 ES200042 A1 ES 200042A1 ES 0200042 A ES0200042 A ES 0200042A ES 200042 A ES200042 A ES 200042A ES 200042 A1 ES200042 A1 ES 200042A1
Authority
ES
Spain
Prior art keywords
metals
group
relating
luminescent materials
luminescent
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
ES0200042A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES200042A1 publication Critical patent/ES200042A1/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
    • H01J29/20—Luminescent screens characterised by the luminescent material
    • 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 materials, e.g. electroluminescent or chemiluminescent
    • C09K11/08—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials
    • C09K11/77—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing rare earth metals
    • C09K11/7715—Luminescent materials, e.g. electroluminescent or chemiluminescent containing inorganic luminescent materials containing rare earth metals containing cerium
    • C09K11/7723—Phosphates
    • C09K11/7724—Phosphates with alkaline earth metals

Landscapes

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

Abstract

A cathode ray tube that has a screen provided with a coating that contains as luminescent material one or more activated phosphides with a series of blue and ultraviolet luminescence that can become luminescent when excited by electrons and that has a lower fluorescence extinction time that 10 raised to -6 sec., characterized by the fact that the phosphate stops the formula ABPO4, in which A represents one or more of the metals of the group of sodium, potassium, cerium and rubidium, and B represents one or more of the metals of the calcium, barium and strontium group. (Machine-translation by Google Translate, not legally binding)
ES0200042A 1950-10-21 1951-10-18 Improvements in or relating to luminescent materials Expired ES200042A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL178656X 1950-10-21

Publications (1)

Publication Number Publication Date
ES200042A1 true ES200042A1 (en) 1952-02-16

Family

ID=19777276

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0200042A Expired ES200042A1 (en) 1950-10-21 1951-10-18 Improvements in or relating to luminescent materials

Country Status (6)

Country Link
AT (1) AT178656B (en)
CH (1) CH301206A (en)
DE (1) DE897746C (en)
DK (1) DK77902C (en)
ES (1) ES200042A1 (en)
GB (1) GB697938A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1150774B (en) * 1955-07-22 1963-06-27 Thorn Electrical Ind Ltd Alkaline earth phosphate phosphor

Also Published As

Publication number Publication date
DK77902C (en) 1954-08-02
CH301206A (en) 1954-08-31
DE897746C (en) 1953-11-23
AT178656B (en) 1954-06-10
GB697938A (en) 1953-09-30

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