P‐225: <i>Late‐News Poster:</i> A High‐Performance Micro Light‐Emitting Diode Pixel Circuit Based on LTPO TFTs using a Pseudo Digital Driving Method

In this paper, we proposed a novel pulse width modulation (PWM) pixel circuit for micro light‐emitting diode (µLED) modular displays with a pseudo digital driving method and external compensation system. The proposed circuit can simplify the compensation circuit by using the external compensation system and a stepwise signal with an inverter. The proposed pixel circuit exhibited stable operation with an error rate lower than 1% under threshold voltage of an inverter variations of ±0.2V. The transient time of simulated µLED current was about below 30 ns. Furthermore, the proposed pixel circuit achieved stable 8‐bit grayscale without internal compensation elements.