GB1501878A - Electroluminescent panel - Google Patents

Electroluminescent panel

Info

Publication number
GB1501878A
GB1501878A GB3985674A GB3985674A GB1501878A GB 1501878 A GB1501878 A GB 1501878A GB 3985674 A GB3985674 A GB 3985674A GB 3985674 A GB3985674 A GB 3985674A GB 1501878 A GB1501878 A GB 1501878A
Authority
GB
United Kingdom
Prior art keywords
colour
sept
layer
envelope
cobalt
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
GB3985674A
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.)
Thorn Electrical Industries Ltd
Original Assignee
Thorn 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 Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Priority to GB3985674A priority Critical patent/GB1501878A/en
Publication of GB1501878A publication Critical patent/GB1501878A/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
    • H05B33/02—Details
    • H05B33/04—Sealing arrangements, e.g. against humidity

Landscapes

  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

1501878 Electroluminescence THORN ELECTRICAL INDUSTRIES Ltd 9 Sept 1975 [12 Sept 1974] 39856/74 Heading C4S An electroluminescent panel has colour-changing moisture-indicating material 17 within a plastics material envelope 16. The indicating material may be applied as a layer, spot or spots, or stripe on either the back or front before encapsulation and may be a complex cobalt compound such as which can be precipitated from aqueous solutions of cobalt chloride and potassium cobalt cyanide and made into a suspension with an organic binder such as solution of hydroxy propyl cellulose in formdimethylamide and acetone. Encapsulation may be by a hot pressing treatment with temperatures as high as 250‹ C. and pressures of 500 lb./sq. in., this treatment also converting the indicator compound to the deep blue colour of the anhydrous form. The indicator colour may change to pink due not only to fracture or hole development but also because plastics materials are not completely water vapour impervious. Substrate 10 may be of Al foil adjacent barium titanate coating 11, phosphor layer 12 and electrically conducting translucent layer 13. Application of the individual layers utilizing specific suspension media is disclosed. The envelope is preferably a transparent fluorinated hydro-carbon material.
GB3985674A 1975-09-09 1975-09-09 Electroluminescent panel Expired GB1501878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3985674A GB1501878A (en) 1975-09-09 1975-09-09 Electroluminescent panel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3985674A GB1501878A (en) 1975-09-09 1975-09-09 Electroluminescent panel

Publications (1)

Publication Number Publication Date
GB1501878A true GB1501878A (en) 1978-02-22

Family

ID=10411867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3985674A Expired GB1501878A (en) 1975-09-09 1975-09-09 Electroluminescent panel

Country Status (1)

Country Link
GB (1) GB1501878A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357557A (en) * 1979-03-16 1982-11-02 Sharp Kabushiki Kaisha Glass sealed thin-film electroluminescent display panel free of moisture and the fabrication method thereof
US4553020A (en) * 1982-12-28 1985-11-12 Compagnie D'informatique Militaire, Spatiale Et Aeronautique Electronic component package comprising a moisture-retention element
US5124204A (en) * 1988-07-14 1992-06-23 Sharp Kabushiki Kaisha Thin film electroluminescent (EL) panel
WO2015100798A1 (en) * 2013-12-30 2015-07-09 深圳市华星光电技术有限公司 Oled panel, manufacturing method therefor, and detection method for sealing effectiveness
CN106773359A (en) * 2017-02-24 2017-05-31 合肥鑫晟光电科技有限公司 A kind of display panel and preparation method thereof, display device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357557A (en) * 1979-03-16 1982-11-02 Sharp Kabushiki Kaisha Glass sealed thin-film electroluminescent display panel free of moisture and the fabrication method thereof
US4553020A (en) * 1982-12-28 1985-11-12 Compagnie D'informatique Militaire, Spatiale Et Aeronautique Electronic component package comprising a moisture-retention element
US5124204A (en) * 1988-07-14 1992-06-23 Sharp Kabushiki Kaisha Thin film electroluminescent (EL) panel
WO2015100798A1 (en) * 2013-12-30 2015-07-09 深圳市华星光电技术有限公司 Oled panel, manufacturing method therefor, and detection method for sealing effectiveness
CN106773359A (en) * 2017-02-24 2017-05-31 合肥鑫晟光电科技有限公司 A kind of display panel and preparation method thereof, display device

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee