Coating processes – Electrical product produced – Fluorescent or phosphorescent base coating
Patent
1984-07-02
1986-09-30
DeMeo, Palmer C.
Coating processes
Electrical product produced
Fluorescent or phosphorescent base coating
313505, 313509, H05B 3310, H05B 3312, B05D 506
Patent
active
046146687
ABSTRACT:
An electroluminescent display is provided which comprises a matrix of individual light-emitting elements in a row and column formation and adapted for excitation from a voltage supply which addresses the matrix. The matrix, which is formed on a substrate, includes a plurality of parallel copper conductors etched onto the substrate with each of the conductors forming a column. A plurality of polymer dielectrics are screen printed over the first conductors, with each dielectric corresponding to an individual light-emitting element. A plurality of light-emitting polymer phosphors are screen printed over the dielectrics with each phosphor corresponding to an individual light-emitting element. A polymer indium oxide light-transmissive conductor is screen printed over each phosphor. A conductive silver polymer ink is printed over the light-transmissive conductor with portions of the silver polymer defining window openings for enabling viewing of the phosphor through the light-transmissive layer when the phosphor is excited. Voltage excitation by a dynamic voltage supply across a selected copper conductor and the silver polymer will cause light emission by the light-emitting element at the excited row-column intersection.
REFERENCES:
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patent: 2938135 (1960-05-01), Toulon
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"Design Guide--Electroluminescent Lighting", by Luminescent Systems Inc., pp. 1 to 69.
Hadden Sam
Topp Mark
Cordis Corporation
DeMeo Palmer C.
Gerstman George H.
O'Shea Sandra L.
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