Patent ID: 7075340
Filing Date: 2006-07-11
Classification: G11C,H01L,H03K

Abstract:
1. A solid-state imaging device comprising: a transfer register for transferring a signal charge; a charge detection section, including a MOS transistor having a gate portion and first and second portions, for storing the signal charge from the transfer register in the first portion, outputting the signal charge from the first portion, and draining the signal charge from the first portion to the second portion; and a voltage generation device for generating a voltage to be applied to the gate portion of the MOS transistor such that the signal charge stored in the first portion of the MOS transistor is drained to the second portion, wherein the voltage generation device includes a dummy MOS transistor having substantially the same structure as that of the MOS transistor and superposition means, a first voltage to be provided to the second portion of the MOS transistor is provided to a second portion of the dummy MOS transistor, a first pulse voltage is provided to a gate portion of the dummy MOS transistor, a second voltage is outputted from a first portion of the dummy MOS transistor in accordance with the first pulse voltage provided to the gate portion of the dummy MOS transistor, a third voltage generated by differentially amplifying with the voltage generating device, the first voltage and the second voltage, and a second pulse voltage generated by the superposition means based on the third voltage and the first pulse voltage is applied to the gate portion of the MOS transistor.