TECHNICAL FIELD

The present technology relates to a signal processing device and a solid-state imaging device, and particularly to a signal processing device and a solid-state imaging device which can provide a differential amplifier circuit that realizes high conversion efficiency.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit under 35 U.S.C. § 371 as a U.S. National Stage Entry of International Application No. PCT/JP2018/012714, filed in the Japanese Patent Office as a Receiving Office on Mar. 28, 2018, which claims priority to Japanese Priority Patent Application JP 2017-078184 filed Apr. 11, 2017, each of which is hereby incorporated by reference herein in its entirety.

BACKGROUND ART

In recent years, complementary metal oxide semiconductor (CMOS) image sensors have become widespread. For CMOS image sensors, source follower circuits are widely used as circuits that read signal charges that have been photoelectrically converted by a plurality of pixels arrayed in a pixel array unit (e.g., refer to PTL1).

In addition, there is a signal readout configuration using a source-grounded circuit or a differential amplifier circuit in addition to a source follower circuit (e.g., refer to PTL 2).

CITATION LIST

Patent Literature

PTL 1: JP 2005-311487APTL 2: JP 2008-271280A

SUMMARY OF INVENTION

Technical Problem

However, while a signal can be read with high conversion efficiency in a case in which signal readout is performed using a differential amplifier circuit, there can be a disadvantage, and thus further improvement is demanded.

In consideration of the above circumstance, it is desirable to provide a differential amplifier circuit that realizes high conversion efficiency.

Solution to Problem

According to the present disclosure, there is provided an imaging device. The imaging device comprises differential amplifier circuitry comprising a first amplification transistor and a second amplification transistor and a plurality of pixels including a first pixel and a second pixel, wherein the first pixel includes a first photoelectric converter, a first reset transistor, and the first amplification transistor, and wherein the second pixel includes a second photoelectric converter, a second reset transistor, and the second amplification transistor, wherein the first reset transistor is coupled to a first reset voltage, and wherein the second reset transistor is coupled to a second reset voltage different than the first reset voltage.

Further according to the present disclosure, there is provided an imaging device. The imaging device comprises first differential amplifier circuitry comprising a first amplification transistor and a second amplification transistor, second different amplifier circuitry comprising a third amplification transistor and a fourth amplification transistor, a plurality of pixels including a first pixel, a second pixel, a third pixel, and a fourth pixel, wherein the first pixel includes a first photoelectric converter and the first amplification transistor, the second pixel includes a second photoelectric converter and the second amplification transistor, the third pixel includes a third photoelectric converter and the third amplification transistor, and the fourth pixel includes a fourth photoelectric converter and the fourth amplification transistor, a first signal line coupled to the first pixel, a second signal line coupled to the second pixel, a third signal line coupled to the third pixel, a fourth signal line coupled to the fourth pixel, a first switch circuit configured to couple the first signal line and the second signal line, a second switch circuit configured to couple the second signal line and the third signal line, and a third switch circuit configured to couple the third signal line and the fourth signal line.

Advantageous Effects of Invention

According to first and second embodiments of the present technology, a differential amplifier circuit that realizes high conversion efficiency can be provided.

Note that effects described herein are not necessarily limitative, and any effect described in the present disclosure may be exhibited.

