ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,218,260, issued on Feb. 4, was assigned to Taiwan Semiconductor Manufacturing Co. Ltd. (Hsinchu, Taiwan).

"Optical sensing device having inclined reflective surface" was invented by Chih-Chiang Chang (Hsinchu, Taiwan) and Chia-Chan Chen (Hsinchu County, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are devices for optical sensing and manufacturing method thereof. In one embodiment, a device for optical sensing includes a substrate, a photodetector and a reflector. The photodetector is disposed in the substrate. The reflector is disposed in the substrate and spaced apart from the photodetector, wherein the reflector has a reflective surf...