Imaging element and imaging device

An imaging element, comprising:

• a first semiconductor substrate having a pixel unit including:
• a first photoelectric conversion unit configured to convert light to an electric charge;
• a second photoelectric conversion unit configured to convert light to an electric charge, the second photoelectric conversion unit being disposed side by side with the first photoelectric conversion unit in a row direction;
• a first transfer unit configured to transfer the electric charge converted by the first photoelectric conversion unit;
• a second transfer unit configured to transfer the electric charge converted by the second photoelectric conversion unit;
• a first retention unit configured to retain the electric charge transferred from the first photoelectric conversion unit by the first transfer unit;
• a second retention unit configured to retain the electric charge transferred from the second photoelectric conversion unit by the second transfer unit;
• a first accumulation unit to which the electric charge retained in the first retention unit is transferred;
• a second accumulation unit to which the electric charge retained in the second retention unit is transferred;
• a first output unit having a first selection unit configured to be electrically connected to a first signal line, the first output unit being configured to output to the first signal line a first signal based on the electric charge transferred from the first retention unit to the first accumulation unit;
• and
• a second output unit having a second selection unit configured to be electrically connected to a second signal line, the second output unit being configured to output to the second signal line a second signal based on the electric charge transferred from the second retention unit to the second accumulation unit;
• and
• a second semiconductor substrate stacked with the first semiconductor substrate, the second semiconductor substrate having:
• a first circuit unit including
• a first control block configured to output a first transfer control signal for controlling the first transfer unit, and
• a second control block configured to output a second transfer control signal for controlling the second transfer unit;
• and
• a second circuit unit configured to output a selection control signal for controlling the first selection unit and the second selection unit,
• wherein the first transfer unit is electrically connected to a first transfer control line through which the first transfer control signal is output,
• wherein the second transfer unit is electrically connected to a second transfer control line through which the second transfer control signal is output, and
• wherein the first selection unit and the second selection unit are electrically connected to a selection control line through which the selection control signal is output.