Two-Transistor Current-Biased Voltage-Programmed AM-OLED Pixel

A new two-transistor pixel circuit in a current-biased voltage programming mode for active matrix-organic light emitting diode displays is proposed. The proposed circuit features a fixed current source and a conventional data line. The former offers a moderate bias current to compensate for the device performance variation or degeneration, and the latter provides pixels with voltage signals. It is demonstrated that both accurate and fast compensations can be realized in the proposed pixel circuit.