Solid-state imaging device, method for driving solid-state imaging device, and electronic apparatus

A method for driving a solid-state imaging device having a pixel part in which pixels for performing photoelectric conversion are arranged and

• a reading part for reading out pixel signals from the pixels in the pixel part, wherein
• each pixel includes
• a photoelectric conversion element which accumulates a charge generated by photoelectric conversion in an integration period,
• a transfer element capable of transferring the charge accumulated in the photoelectric conversion element in a transfer period after the integration period,
• an output node to which the charge accumulated in the photoelectric conversion element is transferred through the transfer element,
• an output buffer part which converts the charge at the output node to a voltage signal corresponding to a quantity of the charge and outputs the converted voltage signal, and
• a comparator which performs comparison processing for comparing the voltage signal from the output buffer part and a reference voltage and outputting a digitalized comparison result signal
• which method for driving a solid-state imaging device, when reading out a pixel signal of the pixel, comprising the steps of,
• in the comparator, under the control of the reading part, performing
• first comparison processing for outputting a digitalized first comparison result signal with respect to a voltage signal corresponding to an overflow charge overflowing from the photoelectric conversion element to the output node in the integration period and
• second comparison processing for outputting a digitalized second comparison result signal with respect to a voltage signal corresponding to an accumulated charge of the photoelectric conversion element transferred to the output node in the transfer period after the integration period.

An electronic apparatus, comprising

• a solid-state imaging device and
• an optical system for forming a subject image in the solid-state imaging device, wherein
• the solid-state imaging device includes
• a pixel part in which pixels for performing photoelectric conversion are arranged and
• a reading part which reads out pixel signals from the pixels in the pixel part, wherein
• each pixel includes
• a photoelectric conversion element which accumulates a charge generated by photoelectric conversion in an integration period,
• a transfer element capable of transferring the charge accumulated in the photoelectric conversion element in a transfer period after the integration period,
• an output node to which the charge accumulated in the photoelectric conversion element is transferred through the transfer element,
• an output buffer part which converts the charge at the output node to a voltage signal corresponding to a quantity of the charge and outputs the converted voltage signal, and
• a comparator which performs comparison processing comparing the voltage signal of the output buffer part and a reference voltage and outputting a digitalized comparison result signal and wherein
• the comparator, under the control of the reading part, performs
• first comparison processing for outputting a digitalized first comparison result signal with respect to a voltage signal corresponding to an overflow charge overflowing from the photoelectric conversion element to the output node in the integration period and
• second comparison processing for outputting a digitalized second comparison result signal with respect to a voltage signal corresponding to an accumulated charge of the photoelectric conversion element transferred to the output node in the transfer period after the integration period.