ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,873, issued on March 11, was assigned to Samsung Display Co. Ltd. (Yongin-si, South Korea).
"Light emitting device" was invented by Yoonkyoo Lee (Seoul, South Korea) and Jin-Won Sun (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light emitting device includes a first electrode, a second electrode disposed on the first electrode, and an emission layer disposed between the first electrode and the second electrode, wherein the emission layer includes a first host represented by Formula 1, a second host different from the first host, and a dopant containing an organometallic complex, and thereby an improved service life characteri...