International Display Workshops General Incorporated Association

Proceedings of the International Display Workshops Volume 30 (IDW '23)

Proceedings of the International Display Workshops Volume 30 (IDW '23)

Dec 6, 2023 - Dec 8, 2023
TOKI MESSE Niigata Convention Center

2:10 PM - 2:30 PM

[DES4-3L] Depletion-Mode a-IGZO TFT Pixel Circuit Compensating for Capacitance Deviation and Threshold Voltage Shift

*Hyunwoo Kim1, Jinho Moon1, Yongchan Kim1, Hojin Lee1 (1. Soongsil University (Korea))

Active-matrix Organic Light-emitting Diode, Pixel Compensation Circuit, a-IGZO TFT

https://doi.org/10.36463/idw.2023.1084

In this paper, we propose a novel pixel circuit using source follower scheme method compensating for threshold voltage (VTH) shifts of driving TFT (DR TFT) and storage capacitance deviations based on amorphous indium-gallium-zinc-oxide (a-IGZO) thin-film transistors (TFTs). The proposed pixel circuit is composed of six TFTs and two capacitors. Simulation results confirmed that, when the VTH of the driving ...