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US 11,108,985 B2Granted
Imaging device, imaging system, and movable object
AssigneeCanon Kabushiki Kaisha
InventorsKohichi Nakamura, Masahiro Kobayashi, Hideo Kobayashi
Life of this patent
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Abstract
Provided is an imaging device including: a photoelectric converter; an AD converter unit including a differential stage; and a ramp signal generator. The photoelectric converter and a first part of the differential stage are arranged in a first chip, a second part of the differential stage is arranged in a second chip that is a different chip from the first chip and stacked on the first chip, and the ramp signal generator is arranged in a different chip from the first chip.
Claims21
An imaging device comprising:
- a photoelectric converter;
- an analog-to-digital converter including a differential stage;
- a ramp signal generator;
- and
- a plurality of buffer circuits connected to the ramp signal generator and configured to transmit a ramp signal generated by the ramp signal generator,
- wherein the photoelectric converter and a first part of the differential stage including a transistor to which a ramp signal output from the ramp signal generator is input are arranged in a first chip,
- wherein a second part of the differential stage is arranged in a second chip that is a different chip from the first chip and stacked on the first chip, wherein the ramp signal generator is arranged in a different chip from the first chip, and
- wherein the plurality of buffer circuits is arranged in a different chip from the first chip.
5 more elements
Dependencies are inferred from the claim text.