Solid-state image pickup device, method of driving the same, and electronic apparatus

An imaging device comprising:

• a pixel comprising:
• a first photoelectric converter;
• a first transfer transistor coupled to the first photoelectric converter;
• a first capacitance coupled to the first transfer transistor;
• a reset transistor coupled to the first capacitance;
• a second photoelectric converter;
• a second transfer transistor coupled to the second transfer transistor;
• a second capacitance coupled to the second transfer transistor;
• a third transfer transistor coupled between the first and the second capacitances;
• a fourth transfer transistor coupled between the first and the second photoelectric converters;
• and
• an amplification transistor coupled to the first capacitance, wherein a sensitivity of the first photoelectric converter is higher than a sensitivity of the second photoelectric converter

An imaging device, comprising:

• a pixel including:
• a first photoelectric converter disposed in a first region of a substrate;
• a second photoelectric converter disposed in a second region of the substrate, wherein the second region is diagonal to the first region in a plan view;
• a first transfer transistor at a third region of the substrate and coupled to the first photoelectric converter;
• a first capacitance at the third region and coupled to the first transfer transistor;
• a reset transistor at a fourth region of the substrate and coupled to the first capacitance;
• wherein the fourth region is diagonal to the third region in the plan view;
• a second transfer transistor at the fourth region and coupled to the second transfer transistor;
• a second capacitance at the fourth region and coupled to the second transfer transistor;
• a third transfer transistor at the fourth region and disposed between the first and the second capacitances in the plan view;
• a fourth transfer transistor coupled between the first and the second photoelectric converter, wherein the fourth transfer transistor bridges the first region and the second region in the plan view;
• and
• an amplification transistor at the third region and coupled to the first capacitance, wherein a sensitivity of the first photoelectric converter is higher than a sensitivity of the second photoelectric converter.

An imaging device comprising:

• a pixel comprising:
• a first photoelectric converter;
• a first transfer transistor coupled to the first photoelectric converter;
• a first capacitance coupled to the first transfer transistor;
• a reset transistor coupled to the first capacitance;
• a second photoelectric converter;
• a second transfer transistor coupled to the second transfer transistor;
• a second capacitance coupled to the second transfer transistor;
• a third transfer transistor coupled between the first and the second capacitances;
• a fourth transfer transistor coupled between the first and the second photoelectric converters;
• and
• an amplification transistor coupled to the first capacitance;
• and
• a driving unit that drives the second transfer transistor and the fourth transfer transistor to adjust a sensitivity ratio of the first photoelectric converter to the second photoelectric converter.