SOLID-STATE IMAGING DEVICE AND METHOD OF DRIVING SOLID-STATE IMAGING DEVICE
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United States of America
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Jan 23, 2020
app pub date -
Jul 1, 2019
filing date -
Jul 1, 2019
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Abstract
A method of driving a solid-state imaging device includes: setting voltage of an input node of an amplifier unit to a first voltage by using logarithmic compression to convert current generated by charges overflowing from a photoelectric conversion unit to the input node into voltage corresponding to the current, transferring charges from the photoelectric conversion unit to the input node, setting voltage of the input node to a second voltage by converting the charges into voltage corresponding to the charges, at the amplifier unit, outputting a first signal based on the first voltage and a second signal based on the second voltage, performing the logarithmic compression by using a diode connected to the input node, and acquiring, as a reference signal, an output of the amplifier unit when the input node is set to a third voltage defined in accordance with a threshold voltage of the diode.
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