US Patent Issued to LG Display on July 7 for "Electroluminescent display device" (South Korean Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,677,528, issued on July 7, was assigned to LG Display Co. Ltd. (Seoul, South Korea).

"Electroluminescent display device" was invented by Mi-Na Kim (Paju-si, South Korea) and Moon-Sung Kil (Paju-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electroluminescent display device includes a substrate on which a plurality of sub-pixels are defined; a first electrode in each sub-pixel on the substrate; a first hole transporting layer on the first electrode; a second hole transporting layer on the first hole transporting layer; a third hole transporting layer on the second hole transporting layer; a light-emitting material layer on the third ho...