US Patent Issued to Universal Display on May 13 for "Organic electroluminescent materials and devices" (Pennsylvania, New Jersey Inventors)

ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,212, issued on May 13, was assigned to Universal Display Corp. (Ewing, N.J.).

"Organic electroluminescent materials and devices" was invented by Jui-Yi Tsai (Newtown, Pa.), Alexey Borisovich Dyatkin (Ambler, Pa.), Zhiqiang Ji (Chalfont, Pa.), Walter Yeager (Yardley, Pa.) and Pierre-Luc T. Boudreault (Pennington, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compound comprising a first bidentate ligand LA having a structure of Formula I,is provided. In Formula I, each of Y1 to Y12 is CR or N; each R can be same or different; each R is hydrogen or a substituent; at least one pair selected from Y3-Y4, Y7-Y8, or Y11-Y12 are CR and the Rs are joi...