ALEXANDRIA, Va., June 12 -- United States Patent no. 12,300,713, issued on May 13, was assigned to Taiwan Semiconductor Manufactoring Co. Ltd. (Hsinchu, Taiwan).

"Image sensor having lens layer over optical sensing area and manufacturing method thereof" was invented by Chia-Chan Chen (Hsinchu County, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method includes at least the following steps. A material layer is formed over an image capture chip. A patterned mask layer is formed on the material layer, wherein a pattern density of the patterned mask layer varies from a central region of the patterned mask layer to a periphery region of the patterned mask layer. The material layer is polished by using ...