US Patent Issued to Universal Display on April 29 for "Organic electroluminescent materials and devices" (New Jersey, Pennsylvania Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,986, issued on April 29, was assigned to Universal Display Corp. (Ewing, N.J.).

"Organic electroluminescent materials and devices" was invented by Hsiao-Fan Chen (Lawrence Township, N.J.), Jason Brooks (Philadelphia), Morgan C. Macinnis (Yardley, Pa.) and Noah Horwitz (Ewing, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A compound of Formula Iis disclosed. In the structure of Formula I, ring A and ring B are 5- or 6-membered rings; L1, L2, L3, and Z are each linking groups; a, b, and c are each 0 or 1, and a+b+c=2 or 3; K1, K2, K3, and K4 are each a direct bond, O, or S; Z1 to Z6 and X1 to X5 are each C or N; W is a linking group comprising 3 ...