US Patent Issued to Semiconductor Energy Laboratory on March 17 for "Light-emitting device, light-emitting apparatus, electronic device, and lighting device" (Japanese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,581,796, issued on March 17, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Atsugi, Japan).

"Light-emitting device, light-emitting apparatus, electronic device, and lighting device" was invented by Satoshi Seo (Kanagawa, Japan), Tsunenori Suzuki (Kanagawa, Japan) and Nobuharu Ohsawa (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a second electrode over a first electrode with an EL layer therebetween. The EL layer includes at least a light-emitting layer, an electron-transport layer, and an electron-inj...