Patent ID: 8692303

Claim:
A solid-state imaging device comprising: a substrate; a photoelectric conversion portion configured to be provided within the substrate, include a first impurity layer whose carrier polarity is a first conductivity type, and photoelectric-convert incident light into signal charge; an impurity region portion configured to be provided within the substrate wherein a carrier polarity of the impurity region portion is the first conductivity type; a second impurity layer configured to be formed on a surface of the first impurity layer so as to be in contact with the surface of the first impurity layer, which is located on one surface side of the substrate, wherein a carrier polarity of the second impurity layer is a second conductivity type opposite to the first conductivity type; a third impurity layer configured to be formed on the second impurity layer so as to be in contact therewith and connected to the impurity region portion wherein a carrier polarity of the third impurity layer is the first conductivity type; and a gate electrode configured to be formed above the third impurity layer, wherein a length the gate electrode parallel to the substrate is at least as long as a length of the third impurity region parallel to the substrate.