The present application discloses a pixel circuit for one pixel in a M-row active pixel matrix of a display panel. The pixel circuit includes a data-inputting and sensing sub-circuit at least coupled to a driving transistor via a signal line and a light-emitting device associated with the pixel in one row. The data-inputting and sensing sub-circuit is configured to use the signal line as a data line for loading a data signal to the pixel in a current cycle of displaying one frame of image. The data signal is compensated based on a compensation signal detected for the pixel in one of previous M−1 numbers of cycles. The signal line is also used as a sensing fine once per cycle for detecting a sensing signal in the current cycle to generate the compensation signal for the pixel when the one row is selected from the M-row active pixel matrix.