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US 10,326,903 B2Granted
Image reader device, and semiconductor device
AssigneeSeiko Epson Corporation
InventorTakafumi Sano
Life of this patent
Estimating the term…
Abstract
Each of a plurality of image reader chips included in an image reader device includes: a readout circuit that reads out a pixel signal output from a pixel portion; a transfer interconnect; an output circuit that outputs the pixel signal; a capacitor that is selectively connected between the transfer interconnect and the output circuit; and a constant voltage circuit. The constant voltage circuit is selectively connected to a first terminal of the capacitor via the output circuit.
Claims13
An image reader device comprising
- a plurality of image reader chips for reading an image,
- wherein each of the plurality of image reader chips includes:
- a pixel portion that outputs a pixel signal, the pixel portion including a light receiving element that receives light from the image and performs photoelectric conversion;
- a readout circuit that reads out the pixel signal output from the pixel portion;
- an output circuit that receives the pixel signal from the readout circuit via a transfer interconnect and outputs the pixel signal;
- a capacitor having a first terminal that is selectively connected to the transfer interconnect and a second terminal that is selectively connected to the output circuit;
- and
- a constant voltage output that outputs a constant voltage signal and is selectively connected to the first terminal of the capacitor via the output circuit.
5 more elements
An image reader device comprising
- a plurality of image reader chips for reading an image,
- wherein each of the plurality of image reader chips includes:
- a pixel portion that outputs a pixel signal, the pixel portion including a light receiving element that receives light from the image and performs photoelectric conversion;
- a readout circuit that reads out the pixel signal output from the pixel portion;
- a transfer interconnect that transfers the pixel signal read out by the readout circuit;
- an output circuit that outputs the pixel signal;
- an operational amplifier having a first input terminal that is connected to the transfer interconnect and an output terminal that is connected to the output circuit;
- a capacitor having a first terminal that is selectively connected to a second input terminal of the operational amplifier and a second terminal that s selectively connected to the output circuit;
- and
- a constant voltage output that outputs a constant voltage signal and is selectively connected to the first terminal of the capacitor via the output circuit.
7 more elements
A semiconductor device comprising:
- a pixel portion that outputs a pixel signal, the pixel portion including a light receiving element that receives light and performs photoelectric conversion;
- a readout circuit that reads out the pixel signal output from the pixel portion;
- an output circuit that receives the pixel signal from the readout circuit via a transfer interconnect and outputs the pixel signal;
- a capacitor having a first terminal that is selectively connected to the transfer interconnect and a second terminal that is selectively connected to the output circuit;
- and
- a constant voltage output that outputs a constant voltage signal and is selectively connected to the first terminal of the capacitor via the output circuit.
3 more elements
Dependencies are inferred from the claim text.