ALEXANDRIA, Va., April 7 -- United States Patent no. 12,598,898, issued on April 7, was assigned to LG DISPLAY Co. LTD. (Seoul, South Korea).

"Electroluminescent display device having a structure for improving light extraction efficiency" was invented by Youngjune Go (Uijeongbu-si, South Korea), Joohwan Hwang (Paju-si, South Korea), Wooseok Noh (Seoul, South Korea), Hyejin Kim (Paju-si, South Korea), SungHo Lee (Daegu, South Korea), Huiseong Yu (Jeonju-si, South Korea) and Seokmin Hong (Daegu, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electroluminescent display device can include a substrate divided into a plurality of sub-pixels having an opening area and a non-opening area, a planarizat...