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METHODS AND APPARATUS FOR LIGHT HARVESTING IN DISPLAYS

United States Patent Application

20110010911
A1
View the Complete Application at the US Patent & Trademark Office
Methods and apparatuses for harvesting light from displays. In one embodiment, the invention relates to a substrate having a first and a second surface, an edge and a luminescent dye. A photovoltaic transducer is positioned adjacent the substrate. Light passing through both the first and second surfaces of the substrate is polarized and light constrained within and traveling through the substrate interacts with the photovoltaic transducer to produce electric current. In one embodiment, the method of harvesting light from an illuminated electronic display including the steps of providing a light source, providing a substrate having a first and a second surface and an edge; and a luminescent dye; and providing a photovoltaic transducer positioned adjacent the substrate. Light passing through both the first and second surfaces of the substrate is polarized, and light constrained within and traveling through the substrate interacts with the photovoltaic transducer to produce electric current.
Baldo, Marc A. (Lexington, MA), Mulder, Carlijn L. (Boston, MA), Rotschild, Carmel (Brookline, MA)
MASSACHUSETTS INSTITUTE OF TECHNOLOGY (Cambridge MA)
12/ 821,932
June 23, 2010
REFERENCE TO GOVERNMENT FUNDING [0001] This invention was made with government support under grant number DE-FG02-07ER46474 awarded by the U.S. Department of Energy. The government has certain rights in the invention.