Patent ID: 7436012

Claim:
A solid state imaging apparatus comprising: a substrate; an imaging region in which photoelectric conversion cells including photoelectric conversion sections are arranged in the form of an array, said imaging region being formed at part of the substrate; a control-circuit region in which the imaging region is controlled and a signal from the imaging region is outputted, said control-circuit region being formed at part of the substrate; a copper-containing interconnect layer formed above the substrate and made of a material containing copper; a light-shielding interconnect layer serving as a light-shielding film for blocking incident light and having an opening for allowing light to enter into the photoelectric conversion section, and a first anti-diffusion layer and a second anti-diffusion layer formed on each said photoelectric conversion section and the copper-containing interconnect layer, respectively, said first and second anti-diffusion layers preventing the copper from diffusing into the photoelectric conversion section, wherein the light-shielding interconnect layer contains aluminum and is patterned by etching.