Method, apparatus, and system of compensating an oled in a display panel for efficiency decay

A system configured to compensate an organic light emitting diode (OLED) device in a display panel for efficiency decay, the system comprising:

• a processor connected to the display panel and configured to:
• acquire a current versus voltage (IV) curve of the OLED device according to drain voltages with a preset number of grayscales applied to a driven thin-film transistor (TFT) and output currents corresponding to the drain voltages;
• compare the IV curve with an IV curve database model, and determine a target curve and a first match curve of the OLED device, wherein the IV curve database model comprises a plurality of curves of current versus voltage measured at different moments;
• determine, according to a measuring moment corresponding to the first match curve, a second match curve corresponding to the measuring moment in a luminance versus voltage (LV) curve database model, wherein the LV curve database model comprises a plurality of curves of luminance versus voltage measured at different moments;
• acquire, based on the second match curve, a target voltage corresponding to a target luminance;
• acquire, based on the target curve, a target current corresponding to the target voltage;
• and
• acquire, based on a characteristic curve of the driven TFT, a compensated gate voltage of the driven TFT through the target voltage, the target current, and the drain voltages.