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Method to generate high efficient devices which emit high quality light for illumination

United States Patent

June 30, 2009
View the Complete Patent at the US Patent & Trademark Office
An electroluminescent apparatus includes an OLED device emitting light in the blue and green spectrums, and at least one down conversion layer. The down conversion layer absorbs at least part of the green spectrum light and emits light in at least one of the orange spectra and red spectra.
Krummacher; Benjamin C. (Sunnyvale, CA), Mathai; Mathew (Santa Clara, CA), Choong; Vi-En (San Jose, CA), Choulis; Stelios A. (San Jose, CA)
Osram Opto Semiconductors GmbH (Regensburg, DE)
11/ 159,557
June 22, 2005
GOVERNMENT RIGHTS This invention was made with Government support under Contract No. DE-FC26-04NT41947 awarded by the Department of Energy. The Government may have certain rights in the invention.