ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,745,561, issued on Sept. 22, was assigned to LG CHEM Ltd. (Seoul, South Korea).
"Organic light emitting device" was invented by Hoon Jun Kim (Daejeon, South Korea), Jae Seung Ha (Daejeon, South Korea), Ji Young Choi (Daejeon, South Korea), Woochul Lee (Daejeon, South Korea) and Joo Ho Kim (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an organic light emitting device comprising: a first electrode; a second electrode; one or more organic material layers including a light emitting layer provided between the first electrode and the second electrode, wherein the light emitting layer includes a compound of Chemical Formula ...