Image sensor with varying grid width

An image sensor with a light-receiving region including a plurality of unit pixels, the image sensor comprising:

• a first region including, from among the plurality of unit pixels, unit pixels adjacent to a center of the light-receiving region;
• and
• a second region including, from among the plurality of unit pixels, unit pixels spaced apart from the center of the light-receiving region, wherein the second region is further from the center of the light-receiving region than the first region,
• wherein both the first region and the second region include both a first color pattern and a second color pattern adjacent to and different from the first color pattern,
• and wherein a light-receiving area of the first color pattern in the second region is smaller than a light-receiving area of the first color pattern in the first region, and wherein a light-receiving area of the first color pattern in the second region is smaller than a light-receiving area of the second color pattern of the second region.

An image sensor comprising:

• a substrate comprising a first face on which light is incident, and a second face opposite to the first face:
• a plurality of unit pixels, wherein each pixel of the plurality of unit pixels includes a photoelectric conversion layer in the substrate;
• a pixel separation pattern disposed in the substrate and separating unit pixels from the plurality of the unit pixels from each other
• a plurality of color filters disposed on the first face of the substrate and arranged in a Bayer pattern, wherein the plurality of color filters includes a red color filter, a green color filter, and a blue color filter;
• and
• a grid pattern disposed on the first face of the substrate and interposed between color filters from the plurality of color filters,
• wherein a light-receiving area of the red color filter and a light-receiving area of the blue color filter are smaller than a light-receiving area of the green color filter.