US Patent Issued to Semiconductor Energy Laboratory on Dec. 30 for "Light-emitting element, display device, electronic device, and lighting device" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,514,091, issued on Dec. 30, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Japan).

"Light-emitting element, display device, electronic device, and lighting device" was invented by Satomi Mitsumori (Kanagawa, Japan), Takeyoshi Watabe (Kanagawa, Japan), Satoshi Seo (Kanagawa, Japan) and Yuko Kubota (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting element having low driving voltage and high emission efficiency is provided. In the light-emitting element, a combination of a guest material and a host material forms an exciplex. The guest material is capable of converting triplet excitation energy into light emission....