ALEXANDRIA, Va., March 17 -- United States Patent no. 12,581,646, issued on March 17, was assigned to SAMSUNG ELECTRONICS Co. Ltd. (Suwon-si, South Korea).
"Semiconductor devices with align key structure for stack structures and data storage systems including the same" was invented by Taehwan Cha (Suwon-si, South Korea), Minjae Oh (Hwaseong-si, South Korea) and Kyungtae Jang (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Semiconductor devices may include a first stack structure including interlayer insulating layers and gate electrodes alternately stacked in a first direction perpendicular to an upper surface of a substrate on a first region of the substrate and including a first lower st...