IMAGING DEVICE
First Claim
1. An imaging device comprising:
- a pixel;
a signal line electrically connected to the pixel;
a first sample-and-hold circuit electrically connected to the signal line; and
a second sample-and-hold circuit electrically connected to the signal line, whereinthe pixel includesa photoelectric converter that generates signal charge by photoelectric conversion,a charge accumulation region that accumulates the signal charge,a reset transistor that resets a voltage of the charge accumulation region to a reference voltage, andan amplifier transistor that amplifies a signal voltage corresponding to an amount of the signal charge accumulated in the charge accumulation region to output to the signal line,the first sample-and-hold circuit includesa first switch that is electrically connected to the signal line and has input-output characteristics in which an output is linear with respect to an input up to a clipping voltage and the output is clipped at the clipping voltage with respect to the input exceeding the clipping voltage, anda first capacitor electrically connected to the signal line through the first switch, andthe second sample-and-hold circuit includesa second switch that is electrically connected to the signal line and has input-output characteristics in which an output is linear with respect to an input, anda second capacitor electrically connected to the signal line through the second switch.
1 Assignment
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Accused Products
Abstract
An imaging device includes: a pixel; a signal line electrically connected to the pixel; and a first and second sample-and-hold circuits electrically connected to the signal line. The pixel includes: a photoelectric converter that generates signal charge; a charge accumulation region that accumulates the signal charge; a reset transistor that resets a voltage of the charge accumulation region; and an amplifier transistor that amplifies a signal voltage. The first sample-and-hold circuit includes: a first switch that is electrically connected to the signal line and has input-output characteristics in which an output is clipped at a clipping voltage with respect to an input exceeding the clipping voltage; and a first capacitor electrically connected to the signal line through the first switch. The second sample-and-hold circuit includes: a second switch electrically connected to the signal line; and a second capacitor electrically connected to the signal line through the second switch.
0 Citations
16 Claims
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1. An imaging device comprising:
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a pixel; a signal line electrically connected to the pixel; a first sample-and-hold circuit electrically connected to the signal line; and a second sample-and-hold circuit electrically connected to the signal line, wherein the pixel includes a photoelectric converter that generates signal charge by photoelectric conversion, a charge accumulation region that accumulates the signal charge, a reset transistor that resets a voltage of the charge accumulation region to a reference voltage, and an amplifier transistor that amplifies a signal voltage corresponding to an amount of the signal charge accumulated in the charge accumulation region to output to the signal line, the first sample-and-hold circuit includes a first switch that is electrically connected to the signal line and has input-output characteristics in which an output is linear with respect to an input up to a clipping voltage and the output is clipped at the clipping voltage with respect to the input exceeding the clipping voltage, and a first capacitor electrically connected to the signal line through the first switch, and the second sample-and-hold circuit includes a second switch that is electrically connected to the signal line and has input-output characteristics in which an output is linear with respect to an input, and a second capacitor electrically connected to the signal line through the second switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification