Patent ID: 7737520

Claim:
A solid-state imaging device, comprising: a semiconductor substrate having a first side surface, an opposite second side surface and a semiconductor substrate recess formed from the first side surface and partially into the semiconductor substrate, the semiconductor substrate recess extending towards yet disposed apart from the second side surface, the semiconductor substrate being fabricated as a unitary construction from a single semiconductor substrate conductivity type material; a light receiving unit disposed in its entirety in the semiconductor substrate recess, the light receiving unit including a first region layer fabricated from a first region layer conductivity type material and a second region layer fabricated from a second region layer conductivity type material, the first and second region layers stacked onto and in contact with one another in a facially opposing manner with the semiconductor substrate contacting and enveloping the light receiving unit except for a light receiving unit surface portion of the first region layer, the light receiving unit surface portion of the first region layer coinciding with the first side surface of the semiconductor substrate; an electrode; a first side insulation layer disposed between and in contact with the electrode and the first side surface of the semiconductor substrate and the light receiving unit surface portion of the light receiving unit; a transparent first insulation film disposed on and in contact with the second side surface; and a transparent second insulation film disposed on and in contact with the transparent first insulation film with the transparent first insulation film being disposed between the second side surface and the transparent second insulation film, wherein the single semiconductor substrate conductivity type material, the first region layer conductivity type material and the second region layer conductivity type material are different from one another.