ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,603, issued on March 17, was assigned to Japan Display Inc. (Tokyo).

"Liquid crystal optical element comprising an alignment control layer having a plurality of projections and manufacturing method thereof" was invented by Yasushi Tomioka (Tokyo), Shinichiro Oka (Tokyo), Koichi Igeta (Tokyo), Junji Kobashi (Tokyo) and Ayaka Higuchi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to one embodiment, a liquid crystal optical element includes a substrate, a first alignment control layer disposed on the substrate and comprising projections arranged at a predetermined pitch, and a first liquid crystal layer disposed on the first alignment...