Method and device for detecting threshold voltage of driving transistor by adjusting at least one of data signal and reference signal loaded on target driving transistor such that a first-electrode target voltage of the target driving transistor is within a preset voltage range

A detecting device for detecting threshold voltages of driving transistors, comprising:

• a loading module, comprising a circuit, said loading module configured to load data signals and reference signals on respective driving transistors in a detection group;
• a detecting module, comprising at least one analog to digital converter, configured to detect first-electrode voltages of the respective driving transistors in the detection group when the respective driving transistors in the detection group are in a turn-off state;
• a first determining module, comprising a circuit, said determining module configured to determine an amount of driving transistors, first-electrode voltages of which are not within a preset voltage range, in the detection group, and to determine a target adjustment set in the detection group in a case where the amount of the driving transistors, the first-electrode voltages of which are not within the preset voltage range, is greater than a threshold;
• an adjustment module, comprising a circuit, the adjustment module configured to for each target driving transistor in the target adjustment set, during a detecting process of threshold voltages, adjust a data signal loaded on the target driving transistor in the target adjustment set;
• the detecting module, further configured to detect a first-electrode target voltage of the target driving transistor when the target driving transistor is in the turn-off state;
• and
• a second determining module, comprising a circuit the second determining module configured to determine a threshold voltage of the target driving transistor according to the first-electrode target voltage of the target driving transistor.