Organic electroluminescent multicolor image display device

Details Organic electroluminescent multicolor image display device Organic electroluminescent multicolor image display device

1991-12-30

1994-03-15

Yusko, Donald J.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313505, 3151693, 428917, 345 76, H05B 3314

Patent

active

052948706

ABSTRACT:
An organic electroluminescent multicolor image display device is disclosed containing an image display array made up of a plurality of light emitting pixels arranged in intersecting files (rows and columns). Each pixel contains a light transmissive first electrode, an electroluminescent medium overlying the first electrode, and an overlying second electrode. The electrodes connect the pixels in an X-Y addressing pattern. The organic electroluminescent medium emits in the blue region of the spectrum. Each pixel is divided into at least two sub-pixels. The electrodes of one set of parallel files is divided into at least two laterally spaced elements each of which joins and forms a part of one sub-pixel of each pixel in the same file. A fluorescent medium capable of absorbing light emitted by the electroluminescent medium and emitting at a longer wavelength is positioned to receive emitted light from the first electrode means. The fluorescent medium is confined to only one of the sub-pixels of each pixel.

REFERENCES:
patent: 4446399 (1984-05-01), Endo et al.
patent: 4999539 (1991-03-01), Coovert et al.
Batchelder et al, Luminescent Solar Concentrators. 2: Experimental and Theoretical Analysis of Their Possible Efficiencies, Applied Optics vol. 21, No. 21, Nov. 1991, pp. 3733-3754.
R. Mach and G. O. Mueller, "Physics and Technology of Thin Film Electroluminescent Displays", Semicond. Sci. Technol. 6 pages: 305-323; Dec. 1990.

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