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Electroluminescent Device Having Electroluminescent Compound and Liquid Crystalline Compound
United States Patent Number: 5,748,271
  • Rifat A.M. Hikmet, Eindhoven University of Technology, Netherlands
  • David Braun, Eindhoven University of Technology, Netherlands
  • Aemilianus G.J. Staring, Eindhoven University of Technology, Netherlands
  • Hermanmus F.M. Schoo, Eindhoven University of Technology, Netherlands
  • Johan Lub, Eindhoven University of Technology, Netherlands
Publication Date
5-5-1998
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.

Publisher statement
Also available from the United States Patent and Trademark Office. Website: http://www.uspto.gov.
Citation Information
Rifat A.M. Hikmet, David Braun, Aemilianus G.J. Staring, Hermanmus F.M. Schoo, et al.. "Electroluminescent Device Having Electroluminescent Compound and Liquid Crystalline Compound" United States Patent Number: 5,748,271 (1998) p. 1 - 6
Available at: http://works.bepress.com/dbraun/26/