ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,501,823, issued on Dec. 16, was assigned to LG CHEM Ltd. (Seoul, South Korea).
"Organic light emitting device" was invented by Dong Uk Heo (Daejeon, South Korea), Miyeon Han (Daejeon, South Korea), Jae Tak Lee (Daejeon, South Korea), Jung Min Yoon (Daejeon, South Korea), Heekyung Yun (Daejeon, South Korea), Hoyoon Park (Daejeon, South Korea) and Sung Kil Hong (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an organic light-emitting device comprising: a light emitting layer comprising a compound of the following Chemical Formula 1, and one or more of an electron transport layer, an electron injection layer, or an electron...