US Patent Issued to Semiconductor Energy Laboratory on Nov. 4 for "Light-emitting element, display device, electronic device, and lighting device" (Japanese Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,464,886, issued on Nov. 4, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Atsugi, Japan).

"Light-emitting element, display device, electronic device, and lighting device" was invented by Takahiro Ishisone (Atsugi, Japan) and Satoshi Seo (Sagamihara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting element with high luminous efficiency is provided. The light-emitting element contains a first organic compound and a second organic compound. The first and second organic compounds form an exciplex. The first organic compound emits no fluorescence but phosphorescence at a temperature ranging from low temperature to normal temper...