ALEXANDRIA, Va., May 19 -- United States Patent no. 12,635,272, issued on May 19, was assigned to OmniVision Technologies Inc. (Santa Clara, Calif.).
"Artifact-reducing pixel and method" was invented by Gang Chen (San Jose, Calif.), Shiyu Sun (Cupertino, Calif.), Yuanwei Zheng (San Jose, Calif.) and Armin Yazdani (New York).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pixel includes a semiconductor substrate that includes a floating diffusion region and a photodiode region. The pixel also includes, between a front surface of the semiconductor substrate and a back surface opposing the front surface: a first trench and a second trench adjacent to the first trench in a separation direction that is both (a) p...