ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,563,960, issued on Feb. 24, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Japan).

"Organic compound, light-emitting device, light-emitting apparatus, electronic device, and lighting device" was invented by Yui Yoshiyasu (Kanagawa, Japan), Hideko Yoshizumi (Kanagawa, Japan), Takeyoshi Watabe (Kanagawa, Japan) and Satoshi Seo (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A novel organometallic complex is provided. One embodiment of the present invention provides a novel organometallic complex having a high quantum yield. An Ir complex has a structure including a 1H-naphtho[1,2-d]imidazole skeleton as a ligand being represente...