Photoelectric conversion device and imaging system

A photoelectric conversion device comprising:

• a semiconductor substrate in which a plurality of photoelectric conversion units including a plurality of first photoelectric conversion units and a plurality of second photoelectric conversion units are arrayed in a direction along a row and a direction along a column;
• a multilayer wiring structure that is arranged on the semiconductor substrate;
• a first color filter layer made of a material which selectively transmits light of a first color, the first color filter layer having a plurality of openings and a plurality of portions each arranged between adjacent openings of the plurality of openings, the plurality of portions forming a plurality of first color filters for the first photoelectric conversion units;
• and
• a plurality of second color filters for the second photoelectric conversion units, the plurality of second color filters being arranged within openings of the plurality of openings, which are arranged above the second photoelectric conversion units,
• wherein the multilayer wiring structure includes an uppermost wiring layer defining aperture regions respectively corresponding to the photoelectric conversion units, and an insulation film arranged to cover the uppermost wiring layer,
• wherein the first color filter layer and the plurality of second color filters are arranged to cover the insulation film,
• wherein in the first color filter layer, the plurality of first color filters are arranged two-dimensionally to form a checkered pattern, and first color filters arranged in a diagonal direction share a corner portion therebetween,
• wherein the insulation film is formed from an inorganic material,
• wherein the first color filter layer and the second color filters are formed from an organic material,
• wherein an edge portion of each first color filter overlaps and is in contact with an edge portion of a second color filter adjacent in either of the direction along the row and the direction along the column,
• wherein the insulation film has a convex portion and a concave portion suited to the uppermost wiring layer,
• wherein the first color filter layer and the second color filters overlap with each other on the convex portion of the insulation film, and
• wherein a portion where the first color filter layer and the second color filters overlap with each other has a width which is not less than ½ of a width of the convex portion and not greater than the width of the convex portion.