Patent ID: 9674468
Date: 2017-06-06
CPC Classifications: H01L,H04N

Claim:
1. An imaging device comprising: a solid-state image sensor including a plurality of unit pixels, each including a driving unit that drives the solid-state image sensor, wherein the driving unit supplies, within an exposure period of the photo-electric converter, a first electric potential to the first transfer gate, wherein the driving unit supplies, within a transfer period during which batch transfer in which the signal charge is collectively transferred from the photo-electric converter to the holding unit is performed after the end of the exposure period, a second electric potential, which is higher than the first electric potential, to the first transfer gate, wherein the driving unit supplies, within a period after the end of the transfer period, a third electric potential, which is lower than the first electric potential, to the first transfer gate, wherein the driving unit performs control such that, at least during a period from the exposure period to the end of the transfer period, the potential barrier of the overflow drain side becomes higher than that of the first transfer gate side, and such that, after the third electric potential is supplied to the first transfer gate, the potential barrier of the overflow drain side becomes lower than that of the first transfer gate side, and wherein the driving unit further supplies, at least during a period from the start of the exposure period until after the end of the transfer period, a fixed electric potential to the second transfer gate that heightens a potential barrier of the second transfer gate.