P‐73: Low‐Power, Programmable Emission Control Driver Using Oxide Thin‐Film Transistors Operating in Depletion Mode

This paper proposes a low‐power, programmable emission control driver using amorphous indium‐gallium‐zinc‐oxide thin‐film transistors (a‐IGZO TFTs) operating in depletion mode. To address the high‐power consumption in oxide TFT circuits, it is proposed to minimize shoot‐through current paths and not to adopt the series‐connected two‐transistor (STT) structure. The programmable emission control signal is generated by adjusting the start pulse, enabling pulse width modulation (PWM) operation for active‐matrix organic light emitting diode (AMOLED) brightness control. Simulation results demonstrate stable operation and low‐power consumption across a threshold voltage (VTH) variation range from –2V to +2V, achieving up to a 66.0% reduction in power consumption compared to a prior study.