Photoelectric conversion apparatus and image pickup system having photoelectric conversion apparatus with substrate including first and second circuits having first and second drive frequencies
A photoelectric conversion apparatus according to one aspect of the present invention includes a first substrate including a photoelectric conversion region and a surrounding region, and a second substrate including a circuit for processing a signal from the photoelectric conversion region, and overlapping the first substrate. In this case, the circuit for processing a signal from the photoelectric conversion region includes a first circuit and a second circuit with a higher drive frequency than that of the first circuit. In an orthogonal projection, the second circuit is only provided in the photoelectric conversion region.
1. A photoelectric conversion apparatus comprising:
a first substrate including a first region containing a photoelectric conversion element and a source follower transistor of a source follower circuit for reading a signal from the photoelectric conversion element, and a second region surrounding the first region; and
a second substrate including a first circuit with a first drive frequency and a second circuit with a second drive frequency, the second drive frequency being higher than the first drive frequency, and
wherein the first circuit overlaps the first region, and the second circuit overlaps the second region.
2. The photoelectric conversion apparatus according to claim 1 , wherein
the second circuit includes a scanning circuit for outputting signals from a plurality of signal lines to a common signal line.
3. The photoelectric conversion apparatus according to claim 1 , wherein
the second circuit includes a counter circuit of an analog-digital converter.
4. The photoelectric conversion apparatus according to claim 1 , wherein,
the second region includes a first part and a second part, the first region being positioned between the first part and the second part, and
the second circuit includes a third part and a fourth part, the third part overlaps the first part and the fourth part overlaps the second part, and the fourth part having an equivalent circuit to that of the third part.
5. The photoelectric conversion apparatus according to claim 1 ,
wherein the first circuit includes a signal holding circuit,
the signal holding circuit overlaps the first region.
6. The photoelectric conversion apparatus according to claim 1 , wherein the second substrate has a part where no circuit is provided, and the part overlaps the first region.
7. The photoelectric conversion apparatus according to claim 1 , wherein a third substrate that overlaps the first substrate and the second substrate is disposed so that the second substrate is positioned between the first substrate and the third substrate.
8. An image pickup system comprising:
the photoelectric conversion apparatus according to claim 1 ; and
a processing circuit for processing a signal from the photoelectric conversion apparatus.
9. The photoelectric conversion apparatus according to claim 1 , wherein the first circuit includes a comparing circuit of an analog-digital converter.
10. The photoelectric conversion apparatus according to claim 1 , wherein the first circuit includes a timing generator circuit that generates a control signal to control operations of another circuit.
11. The photoelectric conversion apparatus according to claim 1 , wherein the first circuit includes a pixel drive circuit that generates a signal for driving a transistor of each of a plurality of pixels disposed in the first region.
12. The photoelectric conversion apparatus according to claim 11 , wherein the first circuit includes a scanning circuit that output a signal to the pixel drive circuit.
13. The photoelectric conversion apparatus according to claim 1 , wherein the second region contains a pixel drive circuit that generates a signal for driving a transistor of each of a plurality of pixels disposed in the first region.
14. The photoelectric conversion apparatus according to claim 13 , wherein the second region contains a scanning circuit that outputs a signal to the pixel drive circuit.
15. The photoelectric conversion apparatus according to claim 1 , wherein the second region contains a current source of the source follower circuit.
16. The photoelectric conversion apparatus according to claim 13 , wherein the first circuit includes an amplifying unit.
17. The photoelectric conversion apparatus according to claim 1 , wherein the first circuit includes an amplifying unit.
18. The photoelectric conversion apparatus according to claim 1 , wherein the second substrate includes a scanning circuit for outputting signals from a plurality of signal lines to a common signal line and an image signal processing unit connected to the common signal line.
19. A photoelectric conversion apparatus comprising:
a first substrate including a first region including a plurality of a photoelectric conversion element and a source follower transistor of a source follower circuit for reading a signal from the photoelectric conversion element, and a second region surrounding the first region; and
a second substrate including a comparator of an analog-digital converter, and an image signal processing unit,
wherein the comparator overlaps the first region, and the image signal processing unit overlaps the second region.
20. A photoelectric conversion apparatus comprising:
a first substrate including a first region including a plurality of a photoelectric conversion element, and a second region surrounding the first region; and
a second substrate including a comparator of an analog-digital converter, a reference power supply circuit which supplies a reference voltage to the comparator, a timing generator that generates a control signal to control operations of the reference power supply circuit, and an image signal processing unit, and
wherein the timing generator overlaps the first region, and the image signal processing unit overlaps the second region.