Solid-state image pickup device

摘要

A solid-state image pickup device has a first substrate and a second substrate in which circuit elements constituting pixels are arranged. The pixel includes: a pixel section that includes a photoelectric conversion element; a ground potential controller that switches a potential to which a circuit element included in the pixel section is grounded; and a reading section that outputs a signal corresponding to the signal charge as a pixel signal output by the pixel. The pixel section includes: the photoelectric conversion element; an amplification transistor that outputs an amplification signal amplified according to the signal charge generated by the photoelectric conversion element; and a switch circuit that switches a ground of the amplification transistor according to a first output mode and a second output mode. The ground potential controller supplies a first potential in the first output mode and supplies a second potential in the second output mode.

主权项

1. A solid-state image pickup device having a first substrate and a second substrate in which circuit elements constituting pixels are arranged, the first substrate and the second substrate being electrically connected to each other by a connection portion,
wherein the pixel includes:
a pixel section that is arranged in the first substrate and includes a photoelectric conversion element that generates signal charge corresponding to incident light;a ground potential controller that is arranged in the first substrate and switches a potential to which a circuit element included in the pixel section is grounded; anda reading section that is arranged in the second substrate and outputs a signal, which corresponds to the signal charge generated by the photoelectric conversion element that is output horn the pixel section, as a pixel signal output by the pixel, the pixel section includes:
the photoelectric conversion element;an amplification transistor that outputs an amplification signal amplified according to the signal charge generated by the photoelectric conversion element; anda switch circuit that switches a ground of the amplification transistor according to a first output mode in which the amplification signal amplified by the amplification transistor being source-grounded is output to the reading section, and a second output mode in which the amplification signal amplified by the amplification transistor being drain-grounded is output to the reading section, and the ground potential controller supplies a first potential to the amplification transistor in the first output mode and supplies a second potential to the amplification transistor in the second output mode to switch a potential to which the amplification transistor is grounded.