A process for producing a solid-state imaging device which includes the steps of forming a light-receiving portion of a pixel in a surface region on the substrate, forming above the light receiving portion an inter-layer dielectric having a depression in its surface, forming on the inter-layer dielectric...http://www.google.com/patents/US20020048840?utm_source=gb-gplus-sharePatent US20020048840 - Solid-state imaging device
