ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,514,024, issued on Dec. 30, was assigned to TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD. (Hsinchu, Taiwan).

"Methods for improving light sensor response" was invented by Meng-Ju Lee (Taoyuan, Taiwan), Hao-Ming Liu (Hsinchu, Taiwan) and Shengyi Wang (Miaoli, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A photodiode with improved response, particular in the blue light portion of the spectrum, is disclosed. An oxide window is formed adjacent a silicide junction. An etch stop layer is applied over the silicide junction, and the oxide window is then etched to form a thin film. A nitride layer is then applied. The resulting photodiode has increase...