Image sensor and image output method thereof, and optoelectronic device

Abstract

Provided are an image sensor and an image output method thereof, and an optoelectronic device. The image sensor includes a plurality of pixels, which include a photoelectric detection circuit, a signal readout circuit, a floating diffusion node, an integrating capacitor, a transmission circuit, an adaptive power supply, and a signal processing circuit. The floating diffusion node integrates the photoelectric charge into the integrating capacitor to obtain an integral voltage. The signal processing circuit generates a logarithmic voltage and a logarithmic current. After the floating diffusion node receives the photoelectric charge, the target voltage is much less than the reference voltage. The node current is the photocurrent, and the node voltage is the integral voltage. When the target voltage increases to the reference voltage, the node current is the logarithmic current, and the node voltage is the logarithmic voltage, so the signal readout circuit finally outputs the corresponding image signals.