Imaging element and electronic apparatus

1. An imaging device, comprising:

a first pixel group including:

at least two first pixels;

first photoelectric conversion regions; and

at least one first color filter on the first photoelectric conversion regions;

a second pixel group including:

at least two second pixels;

second photoelectric conversion regions; and

at least one second color filter on the second photoelectric conversion regions; and

a dummy region provided between the first pixel group and the second pixel group in a first direction so that a first side of the dummy region is adjacent to the first pixel group and a second side of the dummy region is adjacent to the second pixel group,

wherein the dummy region has a same size as one of the at least two first pixels of the first pixel group or a same size as one of the at least two second pixels of the second pixel group,

wherein the first pixel group includes a first 2×2 array of pixels for the at least one first color filter and the second pixel group includes a second 2×2 array of pixels for that at least one second color filter, and

wherein the first pixel group and a fourth pixel group detect green light, the second pixel group detects red light, and a third pixel group detects blue light.

2. The imaging device of claim 1 , wherein the dummy region does not have a color filter.

3. The imaging device of claim 1 , wherein the dummy region is an infrared detection region that detects infrared light, a phase difference detection region that detects a phase difference, or a distance detection region that detects distance.

4. The imaging device of claim 1 , wherein the second pixel group is offset from the first pixel group in a second direction perpendicular to the first direction.

5. The imaging device of claim 4 , wherein the second pixel group is offset from the first pixel group by a distance X/n, where X is a dimension of the first pixel group in the first direction and n is a natural number of at least two.

6. The imaging device of claim 4 , wherein the

third pixel group is adjacent to a third side of the dummy region, the third pixel group including:

third photoelectric conversion regions; and

at least one third color filter on the third photoelectric conversion regions; and

the fourth pixel group is adjacent to a fourth side of the dummy region, the fourth pixel group including:

fourth photoelectric conversion regions; and

at least one fourth color filter on the fourth photoelectric conversion regions.

7. The imaging device of claim 6 , wherein the first, second, third, and fourth pixel groups are arranged such that the dummy region is surrounded by the first, second, third, and fourth pixel groups.

8. The imaging device of claim 7 , wherein the at least one third color filter and the at least one fourth color filter pass a same range of wavelengths of light.

9. The imaging device of claim 8 , wherein the first side and the second side of the dummy region are opposite sides, and wherein the third side and the fourth side of the dummy region are opposite sides.

10. The imaging device of claim 6 , wherein each pixel in the first, second, third, and fourth pixel groups includes a memory and a floating diffusion coupled to the memory.

11. The imaging device of claim 10 , further comprising:

an isolation region between each pixel in the first and second pixel groups.

12. The imaging device of claim 11 , wherein the first photoelectric conversion regions and the second photoelectric conversion regions are disposed in a substrate, and wherein the isolation region penetrates a first surface of the substrate and is surrounded by a portion of the substrate having a different conductivity type than the first and second photoelectric conversion regions.

13. An imaging device, comprising:

a dummy pixel;

a first pixel group;

a second pixel group;

a third pixel group; and

a fourth pixel group,

wherein each of the first, second, third and fourth groups includes at least two pixels,

wherein the first, second, third, and fourth pixel groups surround the dummy pixel

wherein the dummy pixel has a same size as one of the at least two pixels of the first, second, third and fourth pixel groups, and

wherein the first pixel group includes a first 2×2 array of pixels and a first color filter, the second pixel group includes a second 2×2 array of pixels and a second color filter, the third pixel group includes a third 2×2 array of pixels and a third color filter and the fourth pixel group includes a fourth 2×2 array of pixels and a fourth color filter with the color filters arranged in a Bayer arrangement.

14. The imaging device of claim 13 , wherein the color filters passes green, red, or blue light.

15. The imaging device of claim 14 , wherein the dummy pixel does not have a color filter.

16. The imaging device of claim 13 , further comprising:

a substrate including photoelectric conversion regions of each pixel;

a memory disposed in the substrate; and

a wiring layer on one side of the substrate and including at least one transistor coupled to the memory.

17. The imaging device of claim 13 , wherein the dummy pixel is an infrared detection pixel that detects infrared light, a phase difference detection pixel that detects a phase difference, or a distance detection pixel that detects distance.

18. An imaging device, comprising:

a plurality of pixel groups,

wherein each of the plurality of pixel groups includes at least two pixels; and

a plurality of dummy regions interspersed amongst the plurality of pixel groups such that each side of each dummy region is adjacent to and has a same size as one pixel of the at least two pixels in each pixel group,

wherein each of the plurality of pixels groups includes a 2×2 array of pixels and a color filter, and

wherein the color filters are arranged in a Bayer arrangement.

19. The imaging device of claim 18 , wherein the plurality of dummy regions does not have color filters.

20. The imaging device of claim 18 , wherein each dummy region of the plurality of dummy regions is an infrared detection region that detects infrared light, a phase difference detection region that detects a phase difference, or a distance detection region that detects distance.