SOLID STATE IMAGING DEVICE AND OUTPUT CIRCUIT THEREOF

摘要

An output circuit of a solid state imaging device comprises: a source follower circuit that amplifies a voltage value signal converted by a charge detecting portion in accordance with an amount of a signal charge stored by each of pixels and outputs the amplified voltage value signal; a reset transistor that discards the signal charge in the charge detecting portion, which had been subjected to formation of the voltage value signal, to a reset drain in an application of a reset pulse; a bias voltage generating circuit that applies a bias voltage, generated from a power supply, through a resistor to a gate of the reset transistor to which the reset pulse is applied from a reset pulse generating circuit through a coupling capacitor; and a protecting device that applies a voltage of the power supply to a node of the gate and the coupling capacitor to charge the coupling capacitor by the power supply when the power supply is turned ON.