US Patent Issued to Hua Hong Semiconductor (Wuxi) on Aug. 25 for "Method for forming backside illumination CMOS image sensor" (Chinese Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,720,880, issued on Aug. 25, was assigned to Hua Hong Semiconductor (Wuxi) Ltd. (Wuxi, China).

"Method for forming backside illumination CMOS image sensor" was invented by Xiao Fan (Wuxi, China), Han Wang (Wuxi, China) and Guanglong Chen (Wuxi, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a method for forming a backside illumination CMOS image sensor, including: providing a first substrate having a first surface and a second surface opposite to each other; forming a photoelectric epitaxial layer on the second surface, wherein the photoelectric epitaxial layer has a third surface and a fourth surface opposite to eac...