ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,115, issued on Sept. 22, was assigned to SFC Co. LTD. (Cheongju-si, South Korea).
"Organoelectroluminescent device using polycyclic aromatic compounds" was invented by So-young Shim (Cheongju-si, South Korea), Se-jin Yu (Cheongju-si, South Korea), Jin-hwi Cho (Cheongju-si, South Korea) and Yong-woon Yang (Cheongju-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An organoelectroluminescent device according to the present invention employs compounds of characteristic structures as a hole transport material and a dopant material in a hole injection layer or a hole transport layer, and in an emissive layer, respectively, and thus can be ...