| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive method for a solid-state image pickup device where a threshold voltage is modulated uniformly over the entire channel area of an insulation gate field effect transistor for detecting an optical signal. SOLUTION: The drive method for the solid-state image pickup device, where an optical signal is read by repeating a storage period in which optically generated charges from a light receiving diode receiving light emission are stored in a carrier pocket 25; a read period in which the optical signal on the basis of the optically generated charges stored in the carrier pocket 25 is read; and an initializing period in which the optically generated charges left in the carrier pocket 25 are discharged in this order, has a voltage applied to a gate electrode 19 of the insulation gate field effect transistor for detecting the optical signal, so that most of the optically generated charges stored in the carrier pocket 25 is discharged from the carrier pocket for the initializing period, and a prescribed amount of the charges is left in the carrier pocket 25.
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