A Two-Stage Charge Transfer Active Pixel CMOS Image Sensor With Low-Noise Global Shuttering and a Dual-Shuttering Mode

作者：Yasutomi Keita^*; Itoh Shinya; Kawahito Shoji

来源：IEEE Transactions on Electron Devices, 2011, 58(3): 740-747.

DOI：10.1109/TED.2010.2095856

• Complementary metal-oxide-semiconductor (CMOS) image sensor
• dual shutter
• global shutter
• low noise
• motion detection
• two-stage charge transfer
• wide dynamic range

A complementary metal-oxide-semiconductor (CMOS) image sensor with low-noise global shuttering and a dual-shuttering mode is presented. The developed two-stage charge transfer pixel enables kTC noise canceling by means of true correlated double sampling. The implemented prototype demonstrates for the first time that a noise level of less than three electrons can be achieved in a global-shutter CMOS image sensor while attaining high shutter efficiency of 99.7%. In the dual-shuttering mode, both a pinned storage diode signal and a floating diffusion signal are used for desirable functions such as wide-dynamic-range imaging, motion detection, and dual consecutive snapshot imaging.

• 出版日期2011-3