Patent ID: 8085326

Claim:
A solid imaging device comprising: a vertical signal line; a unit pixel including a photodiode which photoelectrically converts and stores incident light, an amplifying transistor which amplifies an input signal from the photodiode and outputs the amplified signal to the vertical signal line, a reset transistor which resets a potential of a control electrode of the amplifying transistor, and a read-out transistor which controls storage of the photodiode; and a control circuit including a bias transistor configured to maintain a first potential of the vertical signal line unchanged, by continuing to supply a bias potential at least lower than a signal level to the vertical signal line by turning on a bias translator, while the reset transistor is turned on; a current source configured to be electronically connected to the vertical signal line when the read-out transistor is on; and a load transistor having a current path, a first end of which is connected to one end of a current path of the bias transistor and a second end of which is connected to an input of the current source, wherein a second potential of the vertical signal line, after the reset transistor is turned off and before the read-out transistor is turned on, is higher than the first potential.