ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,191, issued on Dec. 9, was assigned to LG CHEM Ltd. (Seoul, South Korea).
"Organic light emitting device" was invented by Minwoo Choi (Daejeon, South Korea), Jaeeun Kim (Daejeon, South Korea), Minseung Chun (Daejeon, South Korea), Jungha Lee (jDaejeon, South Korea), Hyeon Soo Jeon (Daejeon, South Korea) and Sang Young Jeon (Daejeon, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an organic light emitting device comprising an anode, a hole transport layer, a light emitting layer, an electron transport layer, and a cathode, wherein the light emitting layer comprises a compound of Chemical Formula 1 and a compound of Chemical For...