Pixel with spatially varying metal route positions

Abstract

An image sensor including an array of pixels having an optical center, the array including a first pixel substantially at a first distance from the optical center in a first direction and a second pixel substantially at the first distance from the optical center in a second direction which is opposite the first direction. The first pixel includes a first metal segment and a first interlayer connect element. The first metal segment is positioned in a second metal layer at a shift distance toward the optical center from a first position. The first interlayer connect element is coupled between the first metal segment and a first metal layer and is positioned at the shift distance toward the optical center from a second position, wherein the second position is coincident with the first position. The second pixel includes a second metal segment, a second interlayer connect element, and a span element. The second metal segment is positioned in the second metal layer at the shift distance toward the optical center from a third position. The second interlayer connect element is coupled between the first and second metal layers, the interlayer connect element positioned at a fourth position which is coincident with the third position. The span element coupled to and extending from the second metal segment in generally the second direction and coupled to the second interlayer connect element.