ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,816, issued on Feb. 17, was assigned to Samsung Display Co. Ltd. (Yongin-si, South Korea).
"Light emitting diode" was invented by Tetsuji Hayano (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light emitting diode of one or more embodiments includes a first electrode, a second electrode opposite the first electrode, and at least one functional layer disposed between the first electrode and the second electrode, the at least one functional layer including a polycyclic compound represented by Formula 1 below, wherein the first electrode and the second electrode each independently includes at least one selected from among Ag, Mg, Cu, ...