Solid-State Imaging Device, Method for Driving Solid-State Imaging Device, and Electronic Apparatus

摘要

A solid-state imaging device, a method for driving the solid-state imaging device, and an electronic apparatus capable of suppressing occurrence of motion distortion while realizing widening of dynamic range and in turn realizing a higher image quality are provided. Each pixel includes a photo diode PD which accumulates a charge generated by photo-electric conversion in an accumulation period, a transfer transistor capable of transferring the accumulated charge in a transfer period, a floating diffusion FD to which the charge accumulated in the photo diode PD is transferred, a source-follower transistor which converts the charge of the floating diffusion FD to a voltage signal in accordance with the charge quantity, and a capacity changing portion capable of changing the capacity of the floating diffusion FD in accordance with a capacity changing signal, the capacity of the floating diffusion FD being changed by the capacity changing portion in a predetermined period in one readout period with respect to the accumulation period and a conversion gain being switched in this one readout period.

主权项

1. A solid-state imaging device comprising
a pixel portion in which pixels are arranged and a readout portion for reading out a pixel signal from the pixel portion, wherein each pixel includes a photo-electric conversion element which accumulates a charge generated by photo-electric conversion in an accumulation period, a transfer element capable of transferring the charge accumulated in the photo-electric conversion element in a transfer period, a floating diffusion to which the charge accumulated in the photo-electric conversion element is transferred through the transfer element, a reset element which discharges the charge of the floating diffusion in a reset period a source-follower element which converts the charge of the floating diffusion to a voltage signal in accordance with the charge quantity, and a capacity changing portion capable of Changing the capacity of the floating diffusion in accordance with a capacity changing signal, and wherein the readout portion can perform readout scan of reading out a signal in a reset state in a readout period after the reset period of resetting the floating diffusion through the reset element and after the readout period after the reset period, reading out a signal in accordance with the accumulated charge in the readout period after the transfer period of transferring the accumulated charge in the photo-electric conversion element to the floating diffusion through the transfer element and, in the readout scan period, sets a plurality of the transfer periods of performing the transfer processing and performs processing of reading out a signal in accordance with the accumulated charge in each readout period after each transfer period.