ALEXANDRIA, Va., June 16 -- United States Patent no. 12,660,501, issued on June 16, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Atsugi, Japan).

"Light-emitting element, display device, electronic device, and lighting device" was invented by Satoshi Seo (Sagamihara, Japan) and Nobuharu Ohsawa (Zama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting element containing a light-emitting material and having high light emission efficiency is provided. The light-emitting element includes a host material and a guest material. The host material includes at least a first molecule and a second molecule having the same molecular structure. The guest material has a function of exhibiting...