Solid-state image pickup device and camera system

摘要

A solid-state image pickup device including a pixel unit in which a plurality of photoelectric conversion elements having different sensitivities are arranged; and a pixel reading unit configured to read and add output signals from the plurality of photoelectric conversion elements in the pixel unit, and to obtain an output signal seemingly from one pixel. The pixel unit includes an absorbing unit configured to absorb overflowing electric charge from a photoelectric conversion element with a high sensitivity.

主权项

1. A solid-state image pickup device comprising:
a pixel circuit having a plurality of unit pixels, each unit pixel including a photoelectric conversion element, a transfer element, and a reset element, the pixel circuit further including a node element; and an overflow path provided between the photoelectric conversion element and the node element, wherein the overflow path is configured to absorb overflowing electric charge from the photoelectric conversion element through the transfer element during an on-state of the reset element occurring during an exposure period of the photoelectric conversion element, and wherein the pixel circuit is configured to read signals from a plurality of photoelectric conversion elements of the plurality of unit pixels in a descending order of sensitivity of the plurality of photoelectric conversion elements.