US Patent Issued to Semiconductor Energy Laboratory on Feb. 4 for "Light-emitting element, light-emitting device, electronic device, and lighting device" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,219,873, issued on Feb. 4, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Japan).

"Light-emitting element, light-emitting device, electronic device, and lighting device" was invented by Satoshi Seo (Kanagawa, Japan), Tsunenori Suzuki (Kanagawa, Japan) and Naoaki Hashimoto (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a novel light-emitting element, a light-emitting element with a long lifetime, or a light-emitting element with high emission efficiency. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer containing a fluorescent substan...