Imaging device, electronic apparatus, and imaging method
AssigneeSeiko Epson Corporation
InventorsYasunori Koide, Mitsutoshi Miyasaka
Life of this patent
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Abstract
An imaging device includes a photodiode having a first electrode and a second electrode, a first transistor that controls electrical connection between the first electrode and a first wiring line through which first voltage is supplied, and a second transistor that controls electrical connection between the first electrode and a second wiring line through which second voltage different from the first voltage is supplied, and voltage at the second electrode is read with the first transistor and the second transistor turned off.
Claims18
An imaging system, comprising:
- a plurality of unit circuits, wherein each of the plurality of unit circuits includes a respective photodiode;
- a reset signal generator configured to selectively provide a reset signal to each of the plurality of unit circuits to control supply of a first voltage to the respective photodiode;
- and
- a light exposure signal generator configured to selectively provide a light exposure signal to each of the plurality of unit circuits to control supply of a second voltage different from the first voltage to the respective photodiode,
- wherein, sequentially for each of the plurality of unit circuits,
- the reset signal generator is configured to control the reset signal to supply the first voltage to the respective photodiode in a first period,
- the light exposure signal generator is configured to control the light exposure signal to supply the second voltage to the respective photodiode in a second period subsequent to the first period, and
- the light exposure signal generator is configured to control the light exposure signal to not supply the second voltage to the respective photodiode in a third period subsequent to the second period.
An imaging method for an imaging device including a plurality of unit circuits each including a respective photodiode, the method comprising:
- selectively providing a reset signal to each of the plurality of unit circuits to control supply of a first voltage to the respective photodiode;
- and
- selectively providing a light exposure signal to each of the plurality of unit circuits to control supply of a second voltage different from the first voltage to the respective photodiode,
- wherein, providing the reset signal and the light exposure signal includes, sequentially for each of the plurality of unit circuits,
- controlling the reset signal to supply the first voltage to the respective photodiode in a first period,
- controlling the light exposure signal to supply the second voltage to the respective photodiode in a second period subsequent to the first period, and
- controlling the light exposure signal to not supply the second voltage to the respective photodiode in a third period subsequent to the second period.
Dependencies are inferred from the claim text.