ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,927, issued on Jan. 20, was assigned to LMS Co. Ltd. (Pyeongtaek-si, South Korea).
"Optical film" was invented by Seongsu Lee (Pyeongtaek-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical film according to various embodiments of the present invention may include a base portion; a pyramid pattern layer wherein a plurality of pyramid patterns having a vertex angle being in the vertex angle range of 60deg or larger to 160deg or smaller is formed on one surface of the base portion; and a diffusion layer wherein a plurality of optical protrusion patterns formed on the other surface of the base portion. the pyramid pattern layer is...