Global Shutter Pixel with Floating Storage Gate

Abstract

The paper discusses a new approach to implementing the correlated double sampling (CDS) in-pixel using a floating resettable storage gate. This method differs from the traditional dual pinned diode pixel and capacitor-based CDS implementations, potentially allowing for smaller pixel size and extremely low shutter leakage. The innovation lies in the use of a floating gate readout, a concept borrowed from the early days of charge injection devices and CCDs. This approach aims to provide high charge capacity and low readout capacitance, beneficial for scientific and industrial imaging applications requiring high speed, large signal, and low noise.