Following the completion of the bond pad barrier etch, strip, and final wafer inspection, the 40nm BSI CMOS Image Sensor reaches the FABOUT step (Engineering Practice).This module represents the definitive conclusion of the front-end and back-end-of-line (BEOL) processing, marking the transition of the fully integrated wafer from the semiconductor fabrication facility to the assembly, test, and packaging environment A2.The preceding final inspection verifies the structural integrity of the final