ALEXANDRIA, Va., May 19 -- United States Patent no. 12,635,331, issued on May 19, was assigned to Samsung Display Co. Ltd. (Yongin-si, South Korea).
"Organic electroluminescent device emitting light" was invented by Federico Koch (Heidelberg, Germany) and Christian Kasparek (Heidelberg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a an organic electroluminescent device comprising a light-emitting layer B comprising a host material HB, a first thermally activated delayed fluorescence (TADF) material EB, and an emitter material SB."
The patent was filed on Oct. 13, 2020, under Application No. 17/766,881.
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