Electroluminescent device comprising a transparent structured el

Details Electroluminescent device comprising a transparent structured el Electroluminescent device comprising a transparent structured el

1995-09-06

1998-01-06

Patel, Nimeshkumar

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313504, 313505, H05B 3302, H01L 3300

Patent

active

057058881

ABSTRACT:
An electroluminescent (EL) device is (1) composed of polymeric LEDs comprising an active layer (7) of a conjugated polymer and a transparent polymeric electrode layer (5) having electroconductive areas (51) as electrodes. Like the active layer (7), the electrode layer (5) can be manufactured in a simple manner by spin coating. The electrode layer (5) is structured into conductive electrodes (51) by exposure to UV light. The electrodes (9) and (51) jointly form a matrix of LEDs for a display. When a flexible substrate (3) is used, a very bendable EL device is obtained.

REFERENCES:
patent: 5300858 (1994-04-01), Nikuido
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Y. Cao et al, "Influence of chemical polymerization conditions on the properties of polyaniline", Polymer, 1989, vol. 30, Dec., pp. 2350-2311.
G. Gustafsson et al, "Flexible Light-emitting diodes made from soluble conducting polymers", Nature, vol. 357, 11 Jun. 1992, pp. 477-479.
D. Braus, et al, "Photo and electroluminescence efficiency in poly(dialkoxy-p-phenylenevinylene", Synthetic Metals, 1994, pp. 75-79.
E. Staring et al, "Photo and Elecroluminescence Efficiency in Soluble Poly(dialkyl-p-phenylenevinylene)", Adanced Materials, 1994, 6 No. 12, pp. 934-937.

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