US Patent Issued to SK hynix on Feb. 25 for "Semiconductor memory device and manufacturing method thereof" (South Korean Inventor)

ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,238,927, issued on Feb. 25, was assigned to SK hynix Inc. (Icheon-si, South Korea).

"Semiconductor memory device and manufacturing method thereof" was invented by Nam Jae Lee (Cheongju-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "There are provided a semiconductor memory device and a manufacturing method thereof. The manufacturing method of the semiconductor memory device includes: forming a preliminary memory cell array that includes a gate stack structure and a channel structure wherein the gate stack structure includes interlayer insulating layers and conductive patterns, alternately stacked on a first substrate, and wherein the cha...