ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,118, issued on July 15, was assigned to Samsung Display Co. Ltd. (Yongin-si, South Korea).
"Organic light-emitting device" was invented by Jae-Yong Lee (Yongin-si, South Korea) and Hwan-Hee Cho (Yongin-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An organic light-emitting device includes a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode, wherein the emission layer includes a first materi...