Photoelectric conversion element, and photoelectric conversion apparatus and image sensing system

摘要

A member for light path to a photoelectric conversion portion includes a middle portion, and a peripheral portion having a refractive index different from the refractive index of the middle portion, and within some plane in parallel with the light receiving surface of a photoelectric conversion portion, and within other plane closer to the light receiving surface than the some plane in parallel with the light receiving surface, the peripheral portion is continuous with the middle portion and surrounds the middle portion, and also the refractive index of the peripheral portion is higher than the refractive index of an insulator film, and the thickness of the peripheral portion within the other plane is smaller than the thickness of the peripheral portion within the some plane.

主权项

1. A photoelectric conversion apparatus having a pixel area where pixels are arrayed comprising:
a photoelectric conversion portion included in a pixel of the arrayed pixels; a member for light path to the photoelectric conversion portion, which is provided on the photoelectric conversion portion; an insulator film; and a wiring; wherein within one plane in parallel with a light receiving surface of the photoelectric conversion portion, and within another plane in parallel with the light receiving surface and closer to the light receiving surface than the one plane, the wiring is arranged in the pixel area, and the insulator film surrounds the member, wherein a width of the member within the another plane is less than a width of the member within the one plane, wherein the member includes
a first portion, anda second portion, the second portion being different from the first portion in a refractive index, the second portion being arranged in continuous with the first portion and surrounding the first portion, and wherein a width of the first portion within the another plane is more than a width of the first portion within the one plane, and a thickness of the second portion within the another plane is not more than a half of a thickness of the second portion within the one plane.