US Patent Issued to SK hynix on Sept. 30 for "Semiconductor memory device" (South Korean Inventor)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,432,913, issued on Sept. 30, was assigned to SK hynix Inc. (Icheon-si, South Korea).

"Semiconductor memory device" was invented by Dae Sung Eom (Icheon-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor memory device includes: a semiconductor substrate including a first region and a second region; a memory cell array over the first region of the semiconductor substrate; a dummy stack structure over the second region of the semiconductor substrate; a chip guard structure penetrating the dummy stack structure; and a void-containing structure penetrating the dummy stack structure."

The patent was filed on June 9, 2022, under A...