ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,875, issued on April 14, was assigned to Taiwan Semiconductor Manufacturing Co. Ltd. (Hsinchu, Taiwan).

"Optical device and method of manufacture" was invented by Chen-Hua Yu (Hsinchu, Taiwan), Sey-Ping Sun (Hsinchu, Taiwan) and Shih Wei Liang (Taichung City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Optical devices and methods of manufacture are provided which form a first active layer of optical devices. After the first active layer of optical devices is formed, a second active layer of optical devices is manufactured over the first active layer of optical devices, wherein the second active layer of optical devices is formed to create...