US Patent Issued to Semiconductor Energy Laboratory on June 23 for "Light-emitting device" (Japanese Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,666,789, issued on June 23, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Japan).

"Light-emitting device" was invented by Takeyoshi Watabe (Atsugi, Japan), Nobuharu Ohsawa (Zama, Japan), Hiromi Seo (Sagamihara, Japan) and Satoshi Seo (Sagamihara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The light-emitting device includes a first electrode, a second electrode, and an organic compound layer between the first electrode and the second electrode. The organic compound layer includes a first light-emitting unit, an intermediate layer, and a second light-emitting unit in this order from the first electrode side. The first light-emitting ...