Patent ID: 7345308

Claim:
A solid-state imaging device, comprising: a photoelectric conversion element; a pixel region including a modulation part formed adjacent to the photoelectric conversion element; and a peripheral region in which a peripheral circuit including a driving circuit driving the photoelectric conversion element and the modulation part is disposed, wherein the peripheral region includes a transistor that a sidewall is formed on a side of a gate electrode; and wherein the pixel region includes: a transistor that no sidewall is formed on a side of a gate electrode; a substrate of one conductivity type; a first impurity layer of a reverse conductivity type formed on the substrate; a second impurity layer of one conductivity type formed on the first impurity layer in a forming region of the photoelectric conversion element; a third impurity layer of one conductivity type formed on the first impurity layer in a forming region of the transistor, photo-generated charges being transferred to the third impurity layer from the second impurity layer; a gate electrode formed above the third impurity layer above the substrate, the gate electrode having an opening and no sidewall on a side thereof; a source formed on a surface side of the substrate in the opening; and a drain formed apart from the source and electrically coupled to the first impurity layer.