Patent ID: 8754458

Claim:
A solid-state imaging device comprising: a substrate; an element forming region formed on a front surface of the substrate; element isolating parts that isolate pixels formed on the substrate, each element isolating part being formed with a trench extending to a desired depth from the front surface of the substrate and a buried film, made of an insulating material, which is buried in the trench; an opto-electric conversion element, formed in the element forming region, that generates signal charge according to the amount of incident light; and a buried-channel MOS transistor formed in a region isolated from the opto-electric conversion element by the element isolating parts, the buried-channel MOS transistor including a source region and a drain region, which are formed in desired regions in the element forming region and are each an impurity region having a conductivity type opposite to the conductivity type of the element forming region, a channel region extending between the element isolating parts, the channel region having first impurity diffusion regions and a second impurity diffusion region, each first impurity diffusion region being an impurity region having a conductivity type opposite to the conductivity type of the element forming region and being formed in a region between the source region and the drain region on a side adjacent to one element isolating part, the second impurity diffusion region being an impurity region having the same conductivity type as the first impurity diffusion regions and being formed across the region between the source region and the drain region, and a gate electrode, which is formed on the channel region above the substrate with a gate insulating film disposed between the gate electrode and the channel region.