A photo-detection pixel circuit, a detector panel, and photoelectric detection apparatus

A pixel circuit of a photo detector panel for generating a pixel image in a display cycle, comprising:

• a reset sub-circuit respectively coupled to a first node and a second node and controlled by a first control signal to provide an initialization voltage to the first node and the second node in a reset period of the display cycle;
• a photoelectric-conversion sub-circuit coupled to the first node and configured to convert an optical signal to a first voltage at the first node;
• a driving sub-circuit comprising a bias input port configured to be provided with a bias voltage, an output port configured to output a current signal, and being controlled by a second voltage at the second node;
• a compensation sub-circuit coupled between the first node and the second node and configured to be controlled by a second control signal to store the first voltage at the first node and connect the second node to the second terminal of the driving transistor in a compensation period of the display cycle to determine the second voltage at the second node, the second voltage being depended on the bias voltage provided to the first terminal of the driving transistor and a threshold voltage of the driving transistor;
• and
• an integration sub-circuit coupled to the first node and controlled by a third control signal to provide a reference voltage to the first node in an integration period of the display cycle to determine a third voltage at the second node to generate a current signal to the output port in an output period of the display cycle, wherein the current signal is substantially independent from the threshold voltage of the driving transistor and the bias voltage.