US Patent Issued to Universal Display on Feb. 10 for "Organic electroluminescent materials and devices" (New Jersey, Pennsylvania Inventors)

ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,550,603, issued on Feb. 10, was assigned to Universal Display Corp. (Ewing, N.J.).

"Organic electroluminescent materials and devices" was invented by Lichang Zeng (Lawrenceville, N.J.), Chuanjun Xia (Lawrenceville, N.J.), Zhiqiang Ji (Hillsborough, N.J.) and Chun Lin (Yardley, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compound having formula (LA)nIr(LB)3-n or formula (LA)mPt(LC)2-m is provided, in which the ligand LA has a structure of Formula I,wherein R has the structure ofwhere two adjacent atoms from the four atoms marked with * are C and are fused to ring B. In Formulas I and II, ring A is a carbocyclic or heterocyclic ring; ring B is an...