DOI: 10.1002/sdtp.16491 ISSN:
7‐4: A Novel a‐IGZO TFT Micro‐LED Circuit with Improved Stability and Area Efficiency
Chanjin Park, Kyeong-Soo Kang, Ji-Hwan Park, Soo-Yeon Lee- General Medicine
In this paper, a novel amorphous Indium‐Gallium‐Zinc‐Oxide (a‐IGZO) thin‐film transistor (TFT) pixel circuit for pulse width modulation (PWM) driving micro light emitting diode (μLED) display is proposed. During the circuit operation, single signal is used for two different purposes and data line for constant current generation (CCG) unit is eliminated. Furthermore, the impact of connection structure between PWM unit and CCG unit on compensation error is investigated, and showed that the structure used in the proposed circuit is effective in reducing current error rate of CCG unit, especially in low gray level area.