ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,881, issued on April 29, was assigned to SAMSUNG ELECTRONICS Co. LTD. (Suwon-si, South Korea).
"Semiconductor devices" was invented by Jongmin Kim (Anyang-si, South Korea), Chansic Yoon (Anyang-si, South Korea), Hyosub Kim (Seoul, South Korea), Sohyun Park (Seoul, South Korea) and Junhyeok Ahn (Suwon-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a semiconductor device including a conductive contact plug on a substrate, the conductive contact plug including a lower portion and an upper portion on the lower portion, the lower portion having a first width, and the upper portion having a second width less than the first width...