| 摘要 |
PURPOSE: A method of driving a CMOS image sensor is provided to overlap the transfer section and reset section of charges with each other to realize high sensitivity of a pixel circuit of the CMOS image sensor. CONSTITUTION: In a pixel circuit of a CMOS image sensor that transfers charges of a photo diode region to a floating area according to a transfer signal and resets charges in the floating area according to a reset signal, the transfer signal becomes inactive and the reset signal becomes active in a charge accumulation section. In this state, the transfer signal is activated in advance in order to sense charges, and then the reset signal is inactivated so as to overlap the transfer section and the reset section with each other by a predetermined period of time, to thereby continuously read a reference signal value and an output signal value for sensing data. |
