| CPC H01L 27/14636 (2013.01) [H01L 27/1462 (2013.01); H01L 27/14621 (2013.01); H01L 27/14627 (2013.01); H01L 27/1463 (2013.01); H01L 27/14634 (2013.01); H01L 27/14645 (2013.01)] | 20 Claims |
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1. An image sensor, comprising:
a first substrate having a first surface and a second surface, which are opposite to each other, the first substrate comprising unit pixel regions, each of which includes a device isolation pattern and a photoelectric conversion region that are provided adjacent to the first surface of the first substrate;
a pixel isolation pattern provided in the first substrate to define the unit pixel regions, the pixel isolation pattern penetrating the device isolation pattern;
a first impurity region and a floating diffusion region, which are provided in the first substrate and adjacent to the first surface, each of the first impurity region and the floating diffusion region being adjacent to a portion of the device isolation pattern;
a second substrate provided on the first substrate, the second substrate having a third surface and a fourth surface, which are opposite to each other;
a second impurity region provided in the second substrate and adjacent to the third surface;
a ground contact coupled to the first impurity region; and
a body contact coupled to the second impurity region,
wherein the ground contact and the body contact are electrically separated from each other.
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