ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,721,037, issued on Aug. 25, was assigned to Samsung Display Co. Ltd. (Yongin-si, South Korea).
"Organic electroluminescence device and polycyclic compound for organic electroluminescence device" was invented by Takuya Uno (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An organic electroluminescence device includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region, wherein the hole transport region includes a polycyclic compound rep...