Granted Patent B2

US 12,511,982 · App. 17/895,760 · Granted Dec 30, 2025

Inventor: Yoshiyuki Kurokawa (Kanagawa, JP)

Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

G08B13/19604G08B13/19602H04N23/667H04N25/77H04N25/771H04N25/78

Abstract

Claims (56)

1 . An electronic appliance comprising:

a housing;

an imaging device comprising a lens attached to the housing, a pixel, and a processing circuit; and

a touch panel,

wherein the pixel comprises a photoelectric conversion element and evaluating portion,

wherein the evaluating portion includes a first transistor, one of a source and drain of which is electrically connected to the photoelectric conversion element, and a second transistor, one of a source and drain of which is electrically connected to an output signal line of the pixel,

wherein a semiconductor layer of the first transistor comprises an oxide semiconductor including at least indium,

wherein a semiconductor layer of the second transistor comprises silicon,

wherein the pixel is configured to take a first imaging data, take a second imaging data after taking the first imaging data, and perform an operation using the first imaging data and the second imaging data in the same pixel, and

wherein the processing circuit is electrically connected to the pixel and configured to generate a trigger signal according to a result of the operation.

2 . The electronic appliance according to claim 1 ,

wherein the result of the operation is determined based on a difference between the first imaging data and the second imaging data in the evaluating portion in the pixel.

3 . The imaging device according to claim 1 ,

wherein the processing circuit includes a subtraction circuit, an absolute value circuit, and an adder circuit.

4 . The imaging device according to claim 1 ,

wherein the other of the source and the drain of the first transistor is electrically connected to a first terminal of a first capacitor, and

wherein a gate of the second transistor is electrically connected to a second terminal of the first capacitor.

5 . An imaging device comprising:

a pixel comprising a photoelectric conversion element and evaluating portion; and

a processing circuit,

wherein the evaluating portion includes a first transistor, one of a source and drain of which is electrically connected to the photoelectric conversion element, and a second transistor, one of a source and drain of which is electrically connected to an output signal line of the pixel,

wherein a semiconductor layer of the first transistor comprises an oxide semiconductor including at least indium,

wherein a semiconductor layer of the second transistor comprises silicon,

wherein the pixel is configured to take a first imaging data, take a second imaging data after taking the first imaging data, and perform an operation using the first imaging data and the second imaging data in the same pixel, and

wherein the processing circuit is electrically connected to the pixel and configured to generate a trigger signal according to a result of the operation.

6 . The imaging device according to claim 5 ,

wherein the result of the operation is determined based on a difference between the first imaging data and the second imaging data in the evaluating portion in the pixel.

7 . The imaging device according to claim 5 ,

wherein the processing circuit includes a subtraction circuit, an absolute value circuit, and an adder circuit.

8 . The imaging device according to claim 5 ,

wherein the other of the source and the drain of the first transistor is electrically connected to a first terminal of a first capacitor, and

wherein a gate of the second transistor is electrically connected to a second terminal of the first capacitor.

9 . An imaging device comprising:

a pixel comprising a photoelectric conversion element and evaluating portion;

an analog processing circuit; and

a digital processing circuit,

wherein the evaluating portion includes a first transistor, one of a source and drain of which is electrically connected to the photoelectric conversion element, and a second transistor, one of a source and drain of which is electrically connected to an output signal line of the pixel,

wherein a semiconductor layer of the first transistor comprises an oxide semiconductor including at least indium,

wherein a semiconductor layer of the second transistor comprises silicon,

wherein the pixel is configured to take a first imaging data, take a second imaging data after taking the first imaging data, and perform an operation using the first imaging data and the second imaging data in the evaluating portion in the same pixel,

wherein the analog processing circuit is electrically connected to the pixel and configured to generate a trigger signal according to a result of the operation,

wherein the digital processing circuit is electrically connected to the pixel,

wherein the pixel is configured to take a third imaging data after the trigger signal is generated, and

wherein the digital processing circuit is configured to convert the third imaging data to a digital data.

10 . The imaging device according to claim 9 ,

wherein the result of the operation is determined based on a difference between the first imaging data and the second imaging data in the evaluating portion in the pixel.

11 . The imaging device according to claim 9 ,

wherein the analog processing circuit includes a subtraction circuit, an absolute value circuit, and an adder circuit.

12 . The imaging device according to claim 9 ,

wherein the other of the source and the drain of the first transistor is electrically connected to a first terminal of a first capacitor, and

wherein a gate of the second transistor is electrically connected to a second terminal of the first capacitor.

13 . A portable game console comprising:

a housing;

a display portion;

an operation key; and

the imaging device according to claim 5 .

Priority Claims (4)

Continuity (3)

References Cited (244)