Thursday, May 2025

05:00 PM - 08:00 PM

Room: 220A

Session: Active Matrix Devices Posters

Micro-LED Pixel Circuit with Threshold Voltage Compensation Using a-IGZO TFT

Late-News

Description:

Micro LED is undergoing extensive research as a leading next-generation display technology. Micro LED utilizes a Pulse Width Modulation (PWM) technique, where the pulse width is directly proportional to the sampled value of the signal. In this study, we successfully improved a pixel circuit that effectively compensates for both positive VTH and negative VTH. When the VTH of the drive TFT controlling the PWM was shifted, the error rate ranged from approximately 0.3% to 0.6% for positive VTH and 0.28% to 0.57% for negative VTH. For the drive TFT controlling the CCG, the VTH shift resulted in error rates of approximately 0.04% to 0.17% for positive VTH and 0.04% to 0.11% for negative VTH.