ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,772,705, issued on Oct. 20, was assigned to LG Display Co. Ltd. (Seoul, South Korea).
"Organic light emitting display apparatus" was invented by JiYoung Ahn (Paju-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An organic light emitting display apparatus includes a plurality of pixels on a substrate, each including a plurality of subpixels each including an emission area, a planarization layer including a light extraction pattern which is at the emission area of each of the plurality of subpixels and includes a plurality of concave portions, and a light emitting device layer on the light extraction pattern. One or more of the plurality of...