US Patent Issued to Semiconductor Energy Laboratory on May 27 for "Light-emitting device, light-emitting apparatus, electronic device, and lighting device" (Japanese Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,317,668, issued on May 27, 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), Hiroshi Kadoma (Kanagawa, Japan), Takumu Okuyama (Tokyo), Naoaki Hashimoto (Kanagawa, Japan), Yusuke Takita (Kanagawa, Japan) and Tsunenori Suzuki (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting device including an EL layer including a hole-injection layer, a light-emitting layer, and an electron-transport layer from an anode side is provided. The hole-injection layer includes a first su...