Solid-state imaging device, electronic apparatus, and inspection apparatus
View Patent ↗A solid-state imaging device includes a first pixel and a second pixel. The first pixel includes a light-shielding part having an opening of a predetermined size. The second pixel includes a light-shielding part having an opening of the predetermined size at a position different from a position of the opening of the first pixel.
1. An imaging device, comprising:
a first pixel including a first light-shielding part extending in a first direction, the first light-shielding part having an opening of a predetermined size, wherein a center of the opening of the first light-shielding part is provided at a center portion of the first pixel in the first direction such that the center of the opening of the first light-shielding part is centered between first and second end portions of the first light-shielding part in the first direction; and
a second pixel including a second light-shielding part extending in the first direction, the second light-shielding part having an opening of the predetermined size, wherein a center of the opening of the second light-shielding part is provided near an end portion of the second pixel in the first direction such that the center of the opening of the second light-shielding part is closer to a first end portion of the second light-shielding part in the first direction and further from a second end portion of the second light-shielding part in the first direction,
wherein characteristics of the imaging device are obtained based on an output signal from each of the first pixel and the second pixel.
2. The imaging device according to claim 1 , wherein sensitivity characteristics of the imaging device are measured by comparing the output signal of the first pixel and the output signal of the second pixel.
3. The imaging device according to claim 1 , wherein the first pixel and the second pixel are provided outside of an effective pixel region of the imaging device.
4. The imaging device according to claim 3 , wherein the first pixel and the second pixel are each provided on an edge portion of the imaging device.
5. The imaging device according to claim 1 , wherein the first pixel and the second pixel are connected to a common circuit.
6. The imaging device according to claim 1 , wherein the second pixel is one of a plurality of second pixels.
7. The imaging device according to claim 1 , wherein,
the first pixel is one of a plurality of first pixels,
the second pixel is one of a plurality of second pixels, and
the plurality of first pixels and the plurality of second pixels form a plurality of pairs.
8. The imaging device according to claim 1 , wherein each of the first pixel and the second pixel includes a photoelectric conversion unit having a potential, and a gradient being provided to the potential in a readout direction of charge obtained in the photoelectric conversion unit.
9. The imaging device according to claim 8 , wherein the opening of the second light-shielding part has a same shape as a region in the photoelectric conversion unit and is provided at a position corresponding to the region.
10. The imaging device according to claim 1 , further comprising a third pixel including a third light-shielding part having an opening located at a position different from a position of the opening in the first light-shielding part and the opening in the second light-shielding part.
11. The imaging device according to claim 1 , wherein the imaging device includes an area sensor.
12. The imaging device according to claim 1 , wherein each of the first pixel and the second pixel includes a photoelectric conversion unit and the second end portion of the second light-shielding part is a region near an opposite end of an end from which charge accumulated in the photoelectric conversion unit is read out.
13. The imaging device of claim 1 , wherein the center of the opening of the second light-shielding part is closer to an interface between an N-type semiconductor region and a P-type semiconductor region than to a readout gate of a photoelectric conversion unit of the second pixel.
14. An electronic apparatus, comprising:
an imaging device including:
a first pixel including a first light-shielding part extending in a first direction, the first light-shielding part having an opening of a predetermined size, wherein a center of the opening of the first light-shielding part is provided at a center portion of the first pixel in the first direction such that the center of the opening of the first light-shielding part is centered between first and second end portions of the first light-shielding part in the first direction, and
a second pixel including a second light-shielding part extending in the first direction, the second light-shielding part having an opening of the predetermined size, wherein a center of the opening of the second light-shielding part is provided near an end portion of the second pixel in the first direction such that the center of the opening of the second light-shielding part is closer to a first end portion of the second light-shielding part in the first direction and further from a second end portion of the second light-shielding part in the first direction, and characteristics of the imaging device are obtained based on an output signal from each of the first pixel and the second pixel; and
an optical unit configured to form an image on an imaging surface of the imaging device.
15. The electronic apparatus according to claim 14 , wherein sensitivity characteristics of the imaging device are measured by comparing the output signal of the first pixel and the output signal of the second pixel.
16. The electronic apparatus according to claim 14 , wherein the first pixel and the second pixel are provided outside of an effective pixel region of the imaging device.
17. The electronic apparatus according to claim 14 , wherein,
the first pixel is one of a plurality of first pixels,
the second pixel is one of a plurality of second pixels, and
the plurality of first pixels and the plurality of second pixels form a plurality of pairs.
18. The electronic apparatus according to claim 14 , wherein each of the first pixel and the second pixel includes a photoelectric conversion unit having a potential, and a gradient being provided to the potential in a readout direction of charge obtained in the photoelectric conversion unit.
19. The electronic apparatus according to claim 14 , wherein each of the first pixel and the second pixel includes a photoelectric conversion unit and the second end portion of the second light-shielding part is a region near an opposite end of an end from which charge accumulated in the photoelectric conversion unit is read out.
20. The electronic apparatus according to claim 14 , further comprising a third pixel including a third light-shielding part.