US Patent Issued to Universal Display on Sept. 2 for "Heteroleptic iridium complexes as dopants" (New Jersey, Pennsylvania Inventors)

ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,408,242, issued on Sept. 2, was assigned to Universal Display Corp. (Ewing, N.J.).

"Heteroleptic iridium complexes as dopants" was invented by Gregg Kottas (Ewing, N.J.), Nasrin Ansari (Monmouth Jct., N.J.), Zeinab Elshenawy (Holland, Pa.), Alan DeAngelis (Pennington, N.J.) and Chuanjun Xia (Lawrenceville, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Novel phosphorescent heteroleptic iridium complexes with phenylpyridine and dibenzo-containing ligands are provided. Alkyl substitution at specific positions on the ligands gives rise to compounds with improved OLED properties, including saturated green emission."

The patent was filed on Dec. 19, 20...