ALEXANDRIA, Va., June 16 -- United States Patent no. 12,310,068, issued on May 20, was assigned to TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD. (Hsinchu, Taiwan).
"Semiconductor device and manufacturing method thereof" was invented by Chun-Sheng Liang (Puyan Township, Taiwan) and Shih-Hsun Chang (Hsinchu, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of semiconductor fabrication includes forming a dielectric layer over a substrate. A dummy gate structure is formed on the dielectric layer, which defines a dummy gate dielectric region. A portion of the dielectric layer not included in the dummy gate dielectric region is etched to form a dielectric etch back region. A spacer element is forme...