ALEXANDRIA, Va., April 2 -- United States Patent no. 12,268,085, issued on April 1, was assigned to Samsung Display Co. Ltd. (Yongin-si, South Korea).
"Organic electroluminescence device" was invented by Yoonkyoo Lee (Seoul, South Korea) and Heechoon Ahn (Yongin-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An organic electroluminescence device of an embodiment includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region, wherein the emission layer includes a first host compound represented by Formula 1, a second host compo...