Patent ID: 9728579
Date: 2017-08-08
CPC Classifications: H01L,H04N

Claim:
1. A solid-state image pickup unit, comprising: a substrate; a photoelectric conversion section on a light incident side of the substrate, wherein the photoelectric conversion section is configured to generate a signal charge based on a light amount; a first charge accumulation section in the substrate on the light incident side, wherein the first charge accumulation section is configured to accumulate the signal charge generated by the photoelectric conversion section; a second charge accumulation section in a first region, other than a light-condensing region, on a side opposite to the light incident side, and laminated together with the first charge accumulation section in a depth direction of the substrate, wherein the light-condensing region is a second region where incident light is condensed in the substrate; a floating diffusion section in a third region, other than the light-condensing region in the substrate, on the side opposite to the light incident side, wherein the floating diffusion section is configured to convert the signal charge into a voltage; a discharge section in the light-condensing region in the substrate on the side opposite to the light incident side, wherein the discharge section is configured to discharge a charge from the first charge accumulation section; and a vertical gate electrode configured to discharge the charge from the first charge accumulation section to the discharge section.