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Concave-hemisphere-patterned organic top-light emitting device

United States Patent

January 21, 2014
View the Complete Patent at the US Patent & Trademark Office
A first device is provided. The first device includes an organic light emitting device, which further comprises a first electrode, a second electrode, and an organic emissive layer disposed between the first and second electrode. Preferably, the second electrode is more transparent than the first electrode. The organic emissive layer has a first portion shaped to form an indentation in the direction of the first electrode, and a second portion shaped to form a protrusion in the direction of the second electrode. The first device may include a plurality of organic light emitting devices. The indentation may have a shape that is formed from a partial sphere, a partial cylinder, a pyramid, or a pyramid with a mesa, among others. The protrusions may be formed between adjoining indentations or between an indentation and a surface parallel to the substrate.
Forrest; Stephen R. (Ann Arbor, MI), Slootsky; Michael (Ann Arbor, MI), Lunt; Richard (Ann Arbor, MI)
The Regents of the University of Michigan (Ann Arbor, MI)
12/ 731,249
March 25, 2010
This invention was made with government support under Grant No. DE-FG02-08ER85082 awarded by the Department of Energy. The government has certain rights in the invention.