SNR metric and crosstalk in color image sensor of small size pixel

According to the high resolution trend in CMOS image sensor, pixel size is shrinking continuously towards and beyond 1.0 μm and reaching technical barrier to get the required performance. To achieve high SNR´s in both low and high illumination, while high sensitivity and high full well capacity are essential but limited by pixel size of around 1.0 μm, reduction of crosstalk is more efficient way, which makes `effectively´ sensitivity and full well capacity higher. In this paper, successful demonstration of ultralow crosstalk high SNR pixel will be presented.