Solid-state imaging device and electronic device

A solid-state imaging device comprising:

• a sharing number of charge storage units configured to store charges generated by photoelectric conversion;
• a charge-voltage conversion unit configured to convert the charges transferred from the sharing number of charge storage units into a voltage signal;
• a sharing number of transfer units configured to transfer the respective charges stored in the sharing number of charge storage units to the charge-voltage conversion unit;
• and
• a switching unit configured to increase or decrease a capacitance of the charge-voltage conversion unit to switch a state to a low gain (LG) state or a high gain (HG) state, wherein,
• when resetting the sharing number of charge storage units,
• the switching unit is configured to switch the state to the LG state,
• the sharing number of transfer units are configured to simultaneously transfer the charges stored in the corresponding charge storage units to the charge-voltage conversion unit, and
• when reading the charges from the sharing number of charge storage units,
• the switching unit is configured to switch the state to the HG state, and
• the sharing number of transfer units are configured to sequentially transfer the charges stored in the corresponding charge storage units to the charge-voltage conversion unit.

A solid-state imaging device comprising:

• a sharing number of charge storage units configured to store charges generated by photoelectric conversion;
• a charge-voltage conversion unit configured to convert the charges transferred from the sharing number of charge storage units into a voltage signal;
• and
• a sharing number of transfer units configured to transfer the respective charges stored in the sharing number of charge storage units to the charge-voltage conversion unit, wherein
• the sharing number of transfer units are configured to
• sequentially transfer the charges stored in the corresponding charge storage units to the charge-voltage conversion unit when resetting the sharing number of charge storage units, and
• sequentially transfer the charges stored in the corresponding charge storage units to the charge-voltage conversion unit when reading the charges from the sharing number of charge storage units.