Patent ID: 9299741
Filing Date: 2016-03-29
CPC Classification: H01L

Claim Text:
1. A solid-state imaging device comprising: a pixel portion having a first light receiving layer which is provided in a planar shape on a surface of a semiconductor substrate and which produces a charge according to an amount of received light of incident light; a charge accumulation portion having a first charge accumulation layer which is provided in a planar shape on the surface of the semiconductor substrate and which accumulates the charge produced in the pixel portion; a first transfer gate portion reading the charge from the pixel portion and transferring the charge to the charge accumulation portion; a charge detection portion to which the charge accumulated in the charge accumulation portion is transferred and which causes a voltage drop corresponding to an amount of the transferred charge to occur; and a second transfer gate portion reading the charge accumulated in the charge accumulation portion and transferring the charge to the charge detection portion, wherein an impurity layer of a ring shape which has an opening portion is provided on a surface of at least one of the first light receiving layer of the pixel portion and the first charge accumulation layer of the charge accumulation portion.