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GB971459A - Electroluminescent display device - Google Patents

Electroluminescent display device

Info

Publication number
GB971459A
GB971459A GB39989/60A GB3998960A GB971459A GB 971459 A GB971459 A GB 971459A GB 39989/60 A GB39989/60 A GB 39989/60A GB 3998960 A GB3998960 A GB 3998960A GB 971459 A GB971459 A GB 971459A
Authority
GB
United Kingdom
Prior art keywords
sheet
electrodes
electrode
piezo
electric
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
GB39989/60A
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 GB971459A publication Critical patent/GB971459A/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
    • H05B33/26—Light sources with substantially two-dimensional radiating surfaces characterised by the composition or arrangement of the conductive material used as an electrode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/12—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by switched stationary formation of lamps, photocells or light relays
    • 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
    • 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
    • H05B33/20—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the material in which the electroluminescent material is embedded

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

<PICT:0971459/C4-C5/1> An electroluminescent device comprises an electroluminescent layer 24 in engagement with one surface of a piezo-electric sheet 10, electrodes 12, 18 disposed on one side of the sheet 10 and so arranged to co-operate with at least one electrode 14 on the other side of the sheet that when electrical pulses are applied thereto elastic waves, accompanied by corresponding electrical fields, are caused to travel over the sheet 10 in directions inclined relatively to one another, and an elastic wave absorbing termination 30, 32, 34, 36, e.g. of lead, provided at each edge of the sheet. The piezo-electric sheet 10 can be of polarized sintered lead titanate-lead zirconate ceramic. The electrodes can comprise two pairs of elongated conductive strips, the electrodes of each pair being disposed substantially in register with one another on opposite sides of the piezo-electric sheet, Fig. 1, or can comprise elongated electrodes on one side of and co-operating with a common electrode 100 on the other side of the sheet, Fig. 2. In the construction shown in Fig. 2 the piezo-electric sheet 10 and the layer 24 of electroluminescent material are sandwiched between the common electrode 100 and a further transparent electrode 102 and modulating signals can be applied between these electrodes. Means 40 are provided for applying a first pulse train to the electrode 12 and a second pulse train to the electrode 18 as described in Specification 905,682 The pulses of at least one of the pulse trains can have a progressively varying time spacing to produce a scanning action. Reference has been directed by the Comptroller to Specification 801,985.
GB39989/60A 1959-11-25 1960-11-21 Electroluminescent display device Expired GB971459A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US855419A US3035200A (en) 1959-11-25 1959-11-25 Electroluminescent display device

Publications (1)

Publication Number Publication Date
GB971459A true GB971459A (en) 1964-09-30

Family

ID=25321225

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39989/60A Expired GB971459A (en) 1959-11-25 1960-11-21 Electroluminescent display device

Country Status (3)

Country Link
US (1) US3035200A (en)
BE (1) BE597075R (en)
GB (1) GB971459A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3145354A (en) * 1960-04-20 1964-08-18 Bell Telephone Labor Inc Circuit element
US3121824A (en) * 1960-06-16 1964-02-18 Gen Telephone & Elect Electroluminescent information display system
US3243648A (en) * 1962-03-28 1966-03-29 Gen Telephone & Elect Piezoelectric energy conversion and electroluminescent display device
US3453595A (en) * 1964-06-30 1969-07-01 Ibm Optic to acoustic converter for pattern recognition
GB1136254A (en) * 1965-10-27 1968-12-11 Standard Telephones Cables Ltd Solid state scanning system
US3536830A (en) * 1967-05-15 1970-10-27 Bell Telephone Labor Inc Solid state display and light sensitive devices
US3824586A (en) * 1972-09-07 1974-07-16 Univ Leland Stanford Junior Method of and apparatus for analog to digital conversion utilizing acoustic waves
US4403834A (en) * 1979-07-23 1983-09-13 Kley & Associates Acoustic-wave device
JP7104849B2 (en) 2018-05-17 2022-07-21 イー インク カリフォルニア， エルエルシー Piezoelectric electrophoresis display

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796584A (en) * 1955-03-21 1957-06-18 Hurvitz Hyman Two dimensional electroluminescent display
US2877371A (en) * 1955-08-16 1959-03-10 Itt Information display device
US2877376A (en) * 1955-09-06 1959-03-10 Itt Phosphor screen device
US2816236A (en) * 1956-06-19 1957-12-10 Gen Electric Method of and means for detecting stress patterns
US2922923A (en) * 1959-03-19 1960-01-26 Sylvania Electric Prod Electroluminescent devices
US2951168A (en) * 1958-11-28 1960-08-30 Sylvania Electric Prod Electroluminescent device

Also Published As

Publication number Publication date
US3035200A (en) 1962-05-15
BE597075R (en) 1961-03-15

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