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GB893187A - Electroluminescent device - Google Patents

Electroluminescent device

Info

Publication number
GB893187A
GB893187A GB12821/58A GB1282158A GB893187A GB 893187 A GB893187 A GB 893187A GB 12821/58 A GB12821/58 A GB 12821/58A GB 1282158 A GB1282158 A GB 1282158A GB 893187 A GB893187 A GB 893187A
Authority
GB
United Kingdom
Prior art keywords
electroluminescent
layer
discs
photo
light
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
GB12821/58A
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB893187A publication Critical patent/GB893187A/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
    • H05B33/22—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
    • 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

Landscapes

  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

893,187. Electroluminescent devices. SYLVANIA ELECTRIC PRODUCTS Inc. April 22, 1958 [April 22, 1957], No. 12821/58. Drawings to Specification. Class 39(1) An electroluminescent device, e.g. a photoconductive electroluminescent combination light amplifier or storage device, comprises two electroluminescent layers, each preferably of phosphor embedded in ceramic as in Specification 733,260, having disposed between them a layer of an opaque material of ceramic, black glass or thin metal, e.g. vaporized aluminium which can be applied as a mosaic of insulated separate dots to prevent " cross-talk." In the combination light amplifier the photo-conductive layer is capable of receiving light from one of the electroluminescent layers for feed-back purposes and is prevented by the opaque layer from receiving light from the other layer and ambient light. The invention can be used in conjunction with an arrangement in which on a layer of electroluminescent material there are a number of circular discs of light-transparent conducting material, the discs being electrically insulated from one another by an insulating opaque material, and a layer of photo-conducting material being applied over the discs and insulating material so as to leave part of the tops of the discs free of photo-conductive material or with the arrangement described in U.S.A. Specification 2,973,436 in which the discs can be of rectangular or square cross-section. Alternatively the arrangement of Specification 829,294 can be used. The layers of electroluminescent material and opaque material can be sandwiched between arrays of parallel lighttransparent conducting strips perpendicular to each other as described in U.S.A. Specification 2,996,623.
GB12821/58A 1957-04-22 1958-04-22 Electroluminescent device Expired GB893187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US893187XA 1957-04-22 1957-04-22

Publications (1)

Publication Number Publication Date
GB893187A true GB893187A (en) 1962-04-04

Family

ID=22216984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12821/58A Expired GB893187A (en) 1957-04-22 1958-04-22 Electroluminescent device

Country Status (2)

Country Link
DE (1) DE1130088B (en)
GB (1) GB893187A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672264A (en) * 1985-01-08 1987-06-09 Phosphor Products Company Limited High contrast electroluminescent display panels

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5229628A (en) * 1989-08-02 1993-07-20 Nippon Sheet Glass Co., Ltd. Electroluminescent device having sub-interlayers for high luminous efficiency with device life

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672264A (en) * 1985-01-08 1987-06-09 Phosphor Products Company Limited High contrast electroluminescent display panels

Also Published As

Publication number Publication date
DE1130088B (en) 1962-05-24

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