Patent ID: 8698066
Filing Date: 2014-04-15
Classification: G01J,G09G,H04N

Abstract:
1. A photodetecting device comprising: a photodetecting element that receives incident light; a reset signal line; a readout signal line; a signal control section configured to output a reset signal to the reset signal line, and to output a readout signal to the readout signal line, the reset signal resetting the photodetecting element by increasing from a first voltage to a second voltage having a potential difference ΔV_RST with respect to the first voltage and returning to the first voltage after a predetermined period of time; an accumulation node connected to the reset signal line via the photodetecting element, the accumulation node having a potential that varies with an amount of light received by the photodetecting element during a sensing period from when the photodetecting element is reset by the reset signal to when the readout signal is supplied; and a sensor switching element configured to read out a signal corresponding to the variation of the potential of the accumulation node, and outputs the signal to the output line, in accordance with the readout signal, wherein the signal control section applies a voltage at a level between the first voltage and the second voltage to the reset signal Line, during at least a portion of the sensing period.