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

[AMDp1-6] An LTPO-based AMOLED Pixel Circuit with VTH Compensation and Leakage Current Prevention for Use in Smartwatch Displays

*Qing-Yu Zheng1, Jui-Hung Chang1, Chih-I Liu1, Po-Cheng Lai2, Yu-Hsien Lu1, Chih-Lung Lin1 (1. National Cheng Kung University (Taiwan), 2. AUO Corporation (Taiwan))

Leakage current, low-frame-rate display, low-temperature polycrystalline oxide thin-film transistor (LTPO TFT), pixel circuit

https://doi.org/10.36463/idw.2023.0249

An AMOLED pixel with an LTPO leakage prevention structure is proposed for use in low frame rate display. The maximum error rate is 3.13% at VDATA of 3.45 V when VTH is varied. Moreover, this circuit successfully suppresses the maximum variation under 0.691 nA during emission time of 66.67 ms.