US Patent Issued to Semiconductor Energy Laboratory on July 21 for "Light-emitting device, light-emitting apparatus, electronic appliance, and lighting device" (Japanese Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,690,324, issued on July 21, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Japan).

"Light-emitting device, light-emitting apparatus, electronic appliance, and lighting device" was invented by Nobuharu Ohsawa (Zama, Japan) and Toshiki Sasaki (Isehara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A novel light-emitting device with high emission efficiency is provided. The light-emitting device includes a first electrode, a second electrode, an EL layer, and an insulating layer. The EL layer is positioned between the first electrode and the second electrode. The EL layer includes at least a light-emitting layer, an electron-transport lay...