US Patent Issued to Semiconductor Energy Laboratory on Feb. 24 for "Light-emitting element, display device, electronic device, and lighting device" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,563,885, issued on Feb. 24, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Japan).

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

According to the abstract* released by the U.S. Patent & Trademark Office: "To provide a light-emitting element with high emission efficiency and low driving voltage. The light-emitting element includes a guest material and a host material. A LUMO level of the guest material is lower than a LUMO level of the host material. An energy difference between the LUMO level and a HOMO level of the gu...