ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,446,464, issued on Oct. 14, was assigned to Samsung Display Co. Ltd. (Yongin-si, South Korea).
"Organic electroluminescence device and polycyclic compound for organic electroluminescence device" was invented by Naoya Sakamoto (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An organic electroluminescence device includes: a first electrode; a second electrode disposed on the first electrode; and at least one organic layer disposed between the first electrode and the second electrode. wherein the at least one organic layer includes a polycyclic compound having a core structure including a n,n'-bicarbazole moiety and, outside the core struct...