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

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,336,368, issued on June 17, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Japan).

"Light-emitting device, light-emitting appliance, display device, electronic appliance, and lighting device" was invented by Takahiro Ishisone (Kanagawa, Japan), Nobuharu Ohsawa (Kanagawa, Japan) and Satoshi Seo (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting device with high emission efficiency and reliability is provided. The light-emitting device includes a fluorescent light-emitting layer and a phosphorescent light-emitting layer. A host material used in the fluorescent light-emitting layer has a function of converting tripl...