A CCD image sensor includes photodiodes, vertical transfer CCDs for
transferal of signal charge of the photodiodes, and a light shielding
layer for protection of the vertical transfer CCDs from light. The light
shielding layer covers over recesses disposed above the photodiodes, and
each of the recesses has an opening on the bottom to expose a light
receiving surface of the photodiode. A light diffusion layer is formed on
the light shielding layer in each recess. Since the incident light
oblique to an optical axis of a microlens is diffused by the light
diffusion layer, the vertical CCDs hardly receive the light coming from
around the edges of the opening.