Patent ID: 7126102

Claim:
A photoelectric conversion device including pixels arranged in an array, each of said pixels comprising: a light receiving region for converting light to signal charges; transistors including an amplifying transistor for amplifying the signal charges to output the amplified signal charges; and an insulation film arranged on a surface of said light receiving region and under gate electrodes of said transistors, wherein a reflection prevention film made of a silicon nitride film is arranged at least above said light receiving region with said insulation film arranged between said reflection prevention film and said light receiving region, and film thicknesses of a first region of said insulation film arranged on a surface of said light receiving region and of a second region of said insulation film arranged under said gate electrodes of said transistors are different from each other, and wherein an interlayer insulation film is arranged on said reflection prevention film, and a second reflection prevention film made of a silicon oxide nitride film is laminated between said reflection prevention film and said interlayer insulation film.