GB782096A - Improvements in or relating to electro-luminescent powders - Google Patents

Improvements in or relating to electro-luminescent powders

Info

Publication number
GB782096A
GB782096A GB3076/54A GB307654A GB782096A GB 782096 A GB782096 A GB 782096A GB 3076/54 A GB3076/54 A GB 3076/54A GB 307654 A GB307654 A GB 307654A GB 782096 A GB782096 A GB 782096A
Authority
GB
United Kingdom
Prior art keywords
elements
group
particles
feb
gold
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
GB3076/54A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB782096A publication Critical patent/GB782096A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
    • H05B33/145—Arrangements of the electroluminescent material

Landscapes

  • Luminescent Compositions (AREA)

Abstract

782,096. Electroluminescent materials. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 2, 1954 [Feb. 4, 1953], No. 3076/54. Class 39(1). An electroluminescent material comprises particles of material composed of at least one element of each of the groups (1) S and Se, (2) Zn and Cd, (3) Cu and Au, with the ratio of the elements of group 3 to group 2 between 10<SP>-3</SP> and 10-2, the content of the elements of group 3 being higher at the surface of the particles than in the interior thereof. Elements also present may be aluminium, scandium, gallium, indium, antimony, phosphorus, arsenic, cerium, samarium, praseodymium, silver, chlorine and bromium in elemental amounts not greater than the copper and/or gold. Up to 10 per cent of the elements of group 2 may be replaced by manganese. The copper or gold may be vaporized in a closed vessel and deposited on particles of the activated sulphides or selenides. Alternatively, the matrix compounds are wetted with solutions of the activator and fired in hydrogen sulphide. Specifications 782,095 and 782,097 are referred to.
GB3076/54A 1953-02-04 1954-02-02 Improvements in or relating to electro-luminescent powders Expired GB782096A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL782096X 1953-02-04

Publications (1)

Publication Number Publication Date
GB782096A true GB782096A (en) 1957-09-04

Family

ID=19832176

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3076/54A Expired GB782096A (en) 1953-02-04 1954-02-02 Improvements in or relating to electro-luminescent powders

Country Status (1)

Country Link
GB (1) GB782096A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212980A (en) * 1987-11-21 1989-08-02 Emi Plc Thorn Electroluminescent display device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212980A (en) * 1987-11-21 1989-08-02 Emi Plc Thorn Electroluminescent display device
US4982135A (en) * 1987-11-21 1991-01-01 Thorn Emi Plc Electroluminescent device
GB2212980B (en) * 1987-11-21 1991-02-20 Emi Plc Thorn Electroluminescent display device

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