In the fabrication of 40nm Backside-Illuminated (BSI) CMOS Image Sensors, the Color Filter Array (CFA) is constructed sequentially using dye-doped or pigment-dispersed polymers P2.Following the coating, exposure, and development of the blue color filter, this specific Final Hard Bake step is executed to finalize the structural and chemical integrity of the blue pixel array (Engineering Practice).Because CFA formation requires a multi-stage process where each color is processed serially P2, the p