SOLID-STATE IMAGE PICKUP DEVICE

摘要

PURPOSE:To obtain a high-sensitivity solid-state image pickup device by transferring an electric charge larger than a transferred optical signal electric charge from a vertical electric charge transfer line to a horizontal electric charge transfer part in accordance with the optical signal electric charge and supplying the electric charge taken out excessively from the vertical electric charge transfer line. CONSTITUTION:The potential of a vertical electric charge transfer line 1 is changed by the signal electric charge sent from a photoelectric converting part 4 to the transfer line 1, and the gate voltage of a vertical electric charge transfer gate 3 is controlled in accordance with this voltage variance by a control circuit 7. The signal electric charge larger than the transferred optical signal electric charge is transferred to a horizontal electric charge transfer part 2 in accordance with the optical signal electric charge. An electric charge supply gate 8 is used to perform the supply of the electric charge taken out excessively from the transfer line 1 after the transfer part 2 and the transfer line 1 are separated from each other by a separating gate 9, and the transfer line is returned to the potential before read of the signal electric charge. Thereafter, the transfer part 2 and the transfer line 1 are connected by the gate 9 and are returned to the first state.