US Patent Issued to Semiconductor Energy Laboratory on Aug. 26 for "Light-emitting element, light-emitting device, electronic device, and lighting device" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,400,590, issued on Aug. 26, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Atsugi, Japan).

"Light-emitting element, light-emitting device, electronic device, and lighting device" was invented by Satoshi Seo (Kanagawa, Japan), Takahiro Ishisone (Kanagawa, Japan), Nobuharu Ohsawa (Kanagawa, Japan), Yusuke Nonaka (Kanagawa, Japan) and Toshiki Sasaki (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Emission efficiency of a light-emitting element is improved. The light-emitting element has a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a first light-emitting layer and a second light-emitti...