Patent ID: 9252170
Filing Date: 2016-02-02
CPC Classification: H01L

Claim Text:
1. A solid-state imaging device comprising: a pixel portion generating electrical charges according to an amount of received incident light; a charge storage portion storing the electrical charges generated in the pixel portion; a first transfer gate portion reading the electrical charges from the pixel portion and transferring the electrical charges to the charge storage portion; a charge detecting portion to which the electrical charges stored in the charge storage portion are transferred and which causes a voltage drop corresponding to the amount of the transferred electrical charges to occur; a second transfer gate portion reading the electrical charges stored in the charge storage portion and transferring the electrical charges to the charge detecting portion; and an offset gate portion provided between the second transfer gate portion and the charge detecting portion and applied with a predetermined constant voltage, wherein the offset gate portion includes an offset gate layer that is provided on a surface of a semiconductor substrate and has a plurality of projections at positions adjacent to the second transfer gate portion and an offset gate electrode that is formed on a surface of the semiconductor substrate, including the offset gate layer.