ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,490,640, issued on Dec. 2, was assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES (Paris).
"Light-emitting device" was invented by Benoit Racine (Grenoble, France), Gilles Le Blevennec (Grenoble, France) and Etienne Quesnel (Grenoble, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting device includes a first electrode reflecting in a spectral range, a second electrode, and a light-emitting layer extending between the first and second electrodes and configured to emit electromagnetic radiation in the spectral range, the electromagnetic radiation emitted by the light-emitting layer being circularly polarized in a...