ALEXANDRIA, Va., March 17 -- United States Patent no. 12,581,643, issued on March 17, was assigned to SAMSUNG ELECTRONICS Co. LTD. (Suwon-si, South Korea).
"Semiconductor memory device and method for fabricating the same" was invented by Chang Woo Seo (Suwon-si, South Korea), Hyun-Chul Shim (Suwon-si, South Korea), Da In Lee (Suwon-si, South Korea), Su Youn Song (Suwon-si, South Korea), Jeong Eun Song (Suwon-si, South Korea) and Won Seok Yoo (Suwon-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor memory device includes a substrate including a trench and a contact recess, a direct contact placed inside the trench and having a width smaller than a width of the trench, a bit line s...