Imaging device and electronic device

Abstract

An imaging device includes a semiconductor substrate including a plurality of photoelectric conversion elements, a plurality of color filters on the semiconductor substrate and faces each of the plurality of photoelectric conversion elements, and a partition wall on the semiconductor substrate and separates one color filter from an adjacent color filter adjacent among the plurality of color filters. The partition wall includes a first metal layer, a first translucent partition wall layer that covers side surfaces and a top surface of the first metal layer, and a second translucent partition wall layer located between the first metal layer and the first translucent partition wall layer and covers the side surfaces and the top surface of the first metal layer. A refractive index of the second translucent partition wall layer is larger than a refractive index of the first translucent partition wall layer.