ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,135, issued on March 18, was assigned to SAMSUNG ELECTRONICS Co. LTD. (Suwon-si, South Korea).
"Semiconductor device" was invented by Kyung Yong Ko (Hwaseong-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor device includes: a lower wiring including: a lower filling film, which extends in a first direction and includes a first portion having a first width in the first direction and a second portion, having a second width smaller than the first width in the first direction, on the first portion; and a lower barrier film which is disposed on a side wall and a bottom surface of the first portion, and is not disposed on a s...