CPC H01L 27/14887 (2013.01) [H01L 27/1464 (2013.01); H01L 27/14603 (2013.01); H01L 27/14641 (2013.01); H01L 27/14647 (2013.01); H01L 27/14625 (2013.01); H01L 27/14656 (2013.01)] | 20 Claims |
1. A light detecting device, comprising:
a photoelectric converter;
a transfer transistor electrically connected to the photoelectric converter; and
a floating diffusion electrically connected to the transfer transistor,
wherein the transfer transistor is disposed on a first surface of a substrate which is opposite to a second surface of the substrate, the second surface being a light incident surface of the substrate,
wherein the transfer transistor comprises a planar gate electrode disposed on the first surface of the substrate and first and second vertical gate electrodes disposed in the substrate, and
wherein the floating diffusion overlaps the photoelectric converter in a plan view.
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