US Patent Issued to Universal Display on Feb. 17 for "Organic electroluminescent materials and devices" (Pennsylvania, New Jersey Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,986, issued on Feb. 17, was assigned to Universal Display Corp. (Ewing, N.J.).

"Organic electroluminescent materials and devices" was invented by Jui-Yi Tsai (Newtown, Pa.), Zhiqiang Ji (Hillsborough, N.J.), Alexey Borisovich Dyatkin (Ambler, Pa.), Chuanjun Xia (Yardley, Pa.), Chun Lin (Yardley, Pa.), Lichang Zeng (Lawrenceville, N.J.) and Walter Yeager (Yardley, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Iridium complexes comprising three different bidentate ligands and their use in OLEDs to enhance the device efficiency and lifetime are disclosed. The complexes have a structure of the formula Ir(LA)(LB)(LC), where ligand LA is selected fro...