Image sensor and electronic device including the same
An image sensor includes a semiconductor substrate including a plurality of photo-sensing devices, a photoelectric conversion device disposed on the semiconductor substrate and absorbing the mixed light of a first color and a second color, and a color filter disposed on one side of the photoelectric conversion device and configured to selectively transmit a mixed light including a third color, and an electronic device including the image sensor is provided.
1. An image sensor comprising:
a semiconductor substrate including a plurality of photo-sensing devices,
a plurality of photoelectric conversion devices on the semiconductor substrate, including a first photoelectric conversion device and a second photoelectric conversion device;
the first photoelectric conversion device overlapping at least one of the photo-sensing devices and configured to absorb a first color,
the second photoelectric conversion device overlapping at least another one of the photo-sensing devices and configured to absorb a second color, and
a color filter structure comprising: a first color filter overlapping the first photoelectric conversion device and configured to selectively transmit a combination of the first color and a third color; and a second color filter overlapping the second photoelectric conversion device and configured to selectively transmit a combination of the second color and the third color;
the first color, the second color and the third color being different from one another,
wherein the photo-sensing devices are configured to sense the third color.
2. The image sensor of claim 1 , wherein the color filter structure comprises a plurality of the first color filter and a plurality of the second color filter.
3. The image sensor of claim 2 , wherein the first color filters and the second color filters are alternately located along at least one row and at least one column.
4. The image sensor of claim 3 , wherein the first photoelectric conversion device overlapping the first color filter is configured to convert light of the first color, and
the second photoelectric conversion device overlapping the second color filter is configured to convert light of the second color.
5. The image sensor of claim 2 , wherein the plurality of photoelectric conversion devices further comprises:
a third photoelectric conversion device not overlapping the first color filter or the second color filter and configured to convert the combination of the first color and the second color.
6. The image sensor of claim 2 , wherein the color filter structure further comprises:
a third color filter configured to transmit a combination of the first color, the second color, and the third color, and
the third color filter is adjacent to the first color filter or to the second color filter.
7. The image sensor of claim 6 , wherein the plurality of photoelectric conversion devices comprises:
a third photoelectric conversion device overlapping the third color filter and configured to convert the combination of the first color and the second color.
8. The image sensor of claim 1 , wherein the first color filters or the second color filters are spaced apart from each other along at least one of at least one row and at least one column.
9. The image sensor of claim 8 , wherein the plurality of photoelectric conversion devices comprises:
a fourth photoelectric conversion device overlapping the first color filter or the second color filter and configured to convert light of the first color or the second color, and
a fifth photoelectric conversion device not overlapping the first color filter or the second color filter and configured to convert the combination of the first color and the second color.
10. The image sensor of claim 1 , wherein the color filter structure further comprises a third color filter configured to transmit a combination of the first color, the second color, and the third color,
the first color filter or the second color filter and the third color filter are alternately located along at least one of at least one row and at least one column.
11. The image sensor of claim 10 , wherein the plurality of photoelectric conversion devices comprises:
a fourth photoelectric conversion device overlapping the first color filter or the second color filter and configured to convert light of the first color or the second color, and
a fifth photoelectric conversion device not overlapping the first color filter or the second color filter and configured to convert the combination of the first color and the second color.
12. The image sensor of claim 1 , wherein:
the first color includes blue, the second color includes red, and the third color includes green.
13. The image sensor of claim 1 , wherein each of the photoelectric conversion devices comprises:
a pair of electrodes facing each other, and
a light-absorption layer between the pair of electrodes and including a light-absorbing material configured to selectively absorb the first color, a light-absorbing material configured to selectively absorb the second color, or a light-absorbing material configured to selectively absorb the first color and the second color.
14. An electronic device including the image sensor of claim 1 .
15. The image sensor of claim 1 , further comprising:
an insulation layer between the semiconductor substrate and the photoelectric conversion device.
16. An image sensor comprising:
a substrate including photo-sensing devices;
a plurality of photoelectric conversion devices in contact with the substrate and overlapping the photo-sensing devices, respectively; and
at least one color filter structure in contact with the plurality of photoelectric conversion devices, including a first color filter configured to transmit a first color and a third color and a second color filter configured to transmit a second color and the third color,
wherein the plurality of photoelectric conversion devices includes a first photoelectric conversion device being configured to convert light of the first color; and a second photoelectric conversion device being configured to convert light of the second color; wherein the photo-sensing devices are configured to sense the third color; and wherein the first color, the second color and the third color are different from one another.
17. The image sensor of claim 16 , wherein a third one of the plurality of photoelectric conversion devices is configured to convert a combination of the first color and the second color.
18. The image sensor of claim 16 , further comprising:
an insulation layer between the substrate and the at least one photoelectric conversion device.
19. An image sensor comprising:
a first color filter configured to transmit a first color and a third color; a second color filter configured to transmit a second color and the third color; a first photoelectric conversion device configured to absorb the first color and transmit the third color from the first color filter,
a second photoelectric conversion device configured to absorb the second color and transmit the third color from the second color filter; and
a plurality of photo-sensing devices configured to sense the third color from the first and second photoelectric conversion devices;
the first color, second color and third color being different from one another.