Solid-state imaging device, driving method of solid-state imaging device, and electronic device

Abstract

The present invention provides a solid-state imaging device, a driving method of the solid-state imaging device, and an electronic device capable of substantially realizing a large dynamic range and a high frame rate and efficiently accessing a memory. The comparator 221 may perform a first comparison process of outputting a digitized first comparison result signal corresponding to the overflow charge overflowed from PD1 to FD1 during the accumulation period, compared with the accumulated charge of PD1 transferred to FD1 during the transfer period. In the second comparison process corresponding to the output of the digitized second comparison result signal, the digitized third comparison result signal output corresponding to the accumulated charge of PD1 and the accumulated charge of the charge accumulation part transferred to FD1 during the transfer period is the second comparison process. Three comparison processes, and the memory control unit 240 controls whether to write data corresponding to the third comparison result signal into the memory unit 230 according to the states of the first and second comparison result signals.

Description

technical field

[0001] The present invention relates to a solid-state imaging device, a driving method of the solid-state imaging device, and electronic equipment. Background technique

[0002] A Complementary Metal Oxide Semiconductor (CMOS) image sensor has been put into practical use as a solid-state imaging device (image sensor) using a photoelectric conversion element that detects light and generates charges.

[0003] CMOS image sensors are widely used as a part of various electronic devices such as digital cameras, video cameras, surveillance cameras, medical endoscopes, personal computers (PCs), mobile phones and other portable terminal devices (mobile devices).

[0004] The CMOS image sensor has an FD amplifier including a photodiode (photoelectric conversion element) and a floating diffusion layer (FD: Floating Diffusion, floating diffusion layer) in each pixel. The mainstream reading type of the CMOS image sensor is column-parallel output Type, that is, select a c...

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