An active matrix display driving circuit is disclosed. Each pixel driving
circuit includes one luminance device, one transistor connected to the
device, one driving transistor and one storage capacitor. There are two
switching transistors at one end of the storage capacitor connecting to
two voltage levels for capacitive coupling and gate voltage of the
driving transistor is changed. This driving circuit is applicable to the
current driving pixel circuit of Poly-Si TFT EL display panel, improves
image defects resulting from uneven threshold voltage of a TFT and IR
drop and solves charging/discharging time problems for low current
import.