Patent ID: 9362323
Filing Date: 2016-06-07
CPC Classification: H01L

Claim Text:
1. A solid-state image sensor comprising a semiconductor substrate including a plurality of photoelectric converters arrayed to form an image sensing region of a rectangle having long sides and short sides, and a plurality of microlenses corresponding to the plurality of photoelectric converters, wherein first height differences between tops of a first group of microlenses, of the plurality of microlenses, which are arranged in a first direction parallel to the long sides, and valleys between the first group of microlenses are larger than second height differences between tops of a second group of microlenses, of the plurality of microlenses, which are arranged in a second direction parallel to the short sides, and valleys between the second group of microlenses, and wherein a first angle formed by a plane perpendicular to a normal of a surface of the semiconductor substrate and a tangent in an outermost portion of a surface of each of the first group of microlenses in a section passing through centers of the first group of microlenses and parallel to the normal is equal to or smaller than a second angle formed by the plane and a tangent in an outermost portion of a surface of each of the second group of microlenses in a section passing through centers of the second group of microlenses and parallel to the normal.