Electroluminescent device having electroluminescent compound and

Details Electroluminescent device having electroluminescent compound and Electroluminescent device having electroluminescent compound and

1996-08-21

1998-05-05

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

349164, 349139, 313504, G02F 11335, H05B 3314

Patent

active

057482713

ABSTRACT:
A description is given of an electroluminescent device (1) having an LED structure, which is composed of an active layer (7) of oriented liquid-crystalline and electroluminescent compounds and a transparent positive electrode layer (5) which is preferably made from an electroconductive polymer. By previously rubbing the electrode layer (5) in one direction with a velvet cloth, an orientation is induced in the molecules in the active layer (7), the orientation being frozen by cooling or polymerization. The electroluminescent device (1) emits polarized light whose direction of polarization is parallel to the direction of rubbing.

REFERENCES:
patent: 3775631 (1973-11-01), Morikawa
patent: 4892292 (1990-01-01), Broer
Influence of Chemical Polymerization Conditions on the Properties of Polyaniline, Yong Cao et al, Polymer, 1989, vol. 30, Dec. 1989.
Nature, G. Gustafsson et al, vol. 357, pp. 477-479 -Jun. 1992.
"Polarized Electroluminescence from Rubbing-Aligned Poly(2,5-dionyloxy-1,4,-phenylenevinylene)Films", by Hamaguchi et al, Appl. Phys. Letter 67, Dec. 4, 1995, pp. 3381-3383.

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