Imaging sensor and imaging device with column ADC
First Claim
Patent Images
1. An imaging sensor comprising:
- an imaging chip havinga pixel unit that has first and second pixel regions that each includes a plurality of pixels,a readout unit that is provided for each of the first and second pixel regions, and each readout unit reading out signals from pixels of each of the first and second pixel regions, anda signal line that is provided for each of the first and second pixel regions; and
a signal processing chip above which the imaging chip is stacked, the signal processing chip havinga signal processing unit that is stacked with the pixel unit and has (i) a first signal processing circuit that performs signal processing on a signal from a first pixel of the first pixel region that is read out by the readout unit for the first pixel region and output to the first signal processing circuit via the signal line for the first pixel region, and (ii) a second signal processing circuit that performs signal processing on a signal from a second pixel of the second pixel region that is read out by the readout unit for the second pixel region and output to the second signal processing circuit via the signal line for the second pixel region,both the first pixel region and the second pixel region being stacked above both the first signal processing circuit and the second signal processing circuit such that both the first pixel region and the second pixel region overlap both the first signal processing circuit and the second signal processing circuit as viewed along a direction parallel to an optical axis of the imaging sensor, andthe first pixel region being connected to only the first signal processing circuit, and the second pixel region being connected to only the second signal processing circuit.
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Abstract
An imaging sensor comprising: an imaging chip in which a plurality of pixel are arranged in a matrix; and a signal processing chip that is each provided for one or more pixel columns or one or more pixel rows, has a device that performs signal processing on a pixel signal output from a pixel, and is stacked with the imaging chip is provided. For example, the device that performs signal processing is an A/D converter that converts a pixel signal output from the pixel into a digital signal, and when a pixel signal output from the pixel is converted into a digital signal, at least two or more A/D converters among the A/D converters are controlled in parallel.
17 Citations
10 Claims
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1. An imaging sensor comprising:
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an imaging chip having a pixel unit that has first and second pixel regions that each includes a plurality of pixels, a readout unit that is provided for each of the first and second pixel regions, and each readout unit reading out signals from pixels of each of the first and second pixel regions, and a signal line that is provided for each of the first and second pixel regions; and a signal processing chip above which the imaging chip is stacked, the signal processing chip having a signal processing unit that is stacked with the pixel unit and has (i) a first signal processing circuit that performs signal processing on a signal from a first pixel of the first pixel region that is read out by the readout unit for the first pixel region and output to the first signal processing circuit via the signal line for the first pixel region, and (ii) a second signal processing circuit that performs signal processing on a signal from a second pixel of the second pixel region that is read out by the readout unit for the second pixel region and output to the second signal processing circuit via the signal line for the second pixel region, both the first pixel region and the second pixel region being stacked above both the first signal processing circuit and the second signal processing circuit such that both the first pixel region and the second pixel region overlap both the first signal processing circuit and the second signal processing circuit as viewed along a direction parallel to an optical axis of the imaging sensor, and the first pixel region being connected to only the first signal processing circuit, and the second pixel region being connected to only the second signal processing circuit. - View Dependent Claims (2, 3, 4, 9)
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5. An imaging sensor comprising:
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an imaging chip having a pixel unit that has first and second pixel regions that each includes a plurality of pixels, a readout unit that is provided for each of the first and second pixel regions, each readout unit reading out signals from pixels of each of the first and second pixel regions, and a signal line that is provided for each of the first and second pixel regions; and a signal processing chip above which the imaging chip is stacked, the signal processing chip having a signal processing unit that is stacked with the pixel unit and has (i) a first signal processing circuit that performs signal processing on a signal from a first pixel of the first pixel region and a signal from a second pixel of the first pixel region, that are read out by the readout unit for the first pixel region and output to the first signal processing circuit via the signal line for the first pixel region, and (ii) a second signal processing circuit that performs signal processing on a signal from a third pixel of the second pixel region and a signal from a fourth pixel of the second pixel region, that are read out by the readout unit for the second pixel region and output to the second signal processing circuit via the signal line for the second pixel region, both the first pixel region and the second pixel region being stacked above both the first signal processing circuit and the second signal processing circuit such that both the first pixel region and the second pixel region overlap both the first signal processing circuit and the second signal processing circuit as viewed along a direction parallel to an optical axis of the imaging sensor, and the first pixel region being connected to only the first signal processing circuit, and the second pixel region being connected to only the second signal processing circuit. - View Dependent Claims (6, 7, 8, 10)
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Specification