United States Patent Number: 5,408,109, April 18, 1995, pages 1-9.
NOTE: At the time of publication, the author David Braun was not yet affiliated with Cal Poly.
Visible light LEDs are produced having a layer of conjugated polymer which is cast directly from solution or formed as a gel-processed admixture with a carrier polymer. The LEDs can be formed so as to emit polarized light.
Electrical and Computer Engineering
Also available from the United States Patent and Trademark Office. Website: http://www.uspto.gov.