ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,733,396, issued on Sept. 8, was assigned to LG CHEM Ltd. (Seoul, South Korea).

"Organic light-emitting device" was invented by Jae Seung Ha (Daejeon, South Korea), Seong So Kim (Daejeon, South Korea) and Minseung Chun (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an organic light-emitting device including: an anode; a cathode facing the anode; a light-emitting layer between the anode and the cathode; a first organic material layer between the anode and the light-emitting layer; and a second organic material layer between the cathode and the light emitting layer, in which each organic material, from among organic materi...