A Color CMOS Imager With 4 $\times$ 4 White-RGB Color Filter Array for Increased Low-Illumination Signal-to-Noise Ratio

@article{Honda2009ACC,
  title={A Color CMOS Imager With 4 \$\times\$ 4 White-RGB Color Filter Array for Increased Low-Illumination Signal-to-Noise Ratio},
  author={Hiroto Honda and Yoshinori Iida and Yoshitaka Egawa and Hiromichi Seki},
  journal={IEEE Transactions on Electron Devices},
  year={2009},
  volume={56},
  pages={2398-2402}
}
A color CMOS image sensor with the 4 times 4 White-RGB color filter array (CFA) including 50% white pixels has been developed. A transparent layer has been fabricated on the white pixel to realize over 95% transmission for visible light with wavelengths of 400-700 nm. Pixel pitch and number of the pixels were 3.3 mum and 2 million, respectively. With the simple and low-noise color separation process, low-illumination signal-to-noise ratios of luminance signal have been increased by 6 dB… CONTINUE READING

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