TY - GEN
T1 - Compensation Pixel Circuit Based on LTPS TFTs to Improve Effect of Leakage Current for AMOLED Displays with Low Frame Rate
AU - Lee, Po Ting
AU - Lin, Yu Sheng
AU - Lin, Chih Lung
N1 - Funding Information:
Acknowledgments Thiswork wassupported bythe MinistryofScience and Technologyof Taiwan under Projects of MOST 107-2221-E-006-188-MY3 and AU Optronics Corporation is appreciated for its technical and funding support. References 1) C. L. Fan, Y. C. Chen, C. C. Yang, Y. K. Tsai, and B. R. Huang, “Novel
PY - 2020/9
Y1 - 2020/9
N2 - This paper proposes a new pixel circuit for active matrix organic light-emitting diode displays with low frame rate. The proposed circuit can compensate for the threshold voltage variations, VDD current-resistant drops, and the effect of high leakage current of low-temperature polycrystalline silicon thin-film transistors to supply stable and uniform OLED driving currents. The simulation results show that the relative current error rates are less than 4.5% under the circumstances of ± 0.5 V threshold voltage variations and 0.5 V VDD current-resistance drops. Moreover, the distortions of the gate voltage of the driving TFTs are smaller than 1.4 V under a 15 Hz frame rate operation compared with the 4T2C circuit, proving the leakage current compensation capability for the proposed pixel circuit.
AB - This paper proposes a new pixel circuit for active matrix organic light-emitting diode displays with low frame rate. The proposed circuit can compensate for the threshold voltage variations, VDD current-resistant drops, and the effect of high leakage current of low-temperature polycrystalline silicon thin-film transistors to supply stable and uniform OLED driving currents. The simulation results show that the relative current error rates are less than 4.5% under the circumstances of ± 0.5 V threshold voltage variations and 0.5 V VDD current-resistance drops. Moreover, the distortions of the gate voltage of the driving TFTs are smaller than 1.4 V under a 15 Hz frame rate operation compared with the 4T2C circuit, proving the leakage current compensation capability for the proposed pixel circuit.
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U2 - 10.23919/AM-FPD49417.2020.9224504
DO - 10.23919/AM-FPD49417.2020.9224504
M3 - Conference contribution
AN - SCOPUS:85096998138
T3 - Proceedings of AM-FPD 2020 - 27th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials
SP - 107
EP - 110
BT - Proceedings of AM-FPD 2020 - 27th International Workshop on Active-Matrix Flatpanel Displays and Devices
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 27th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2020
Y2 - 1 September 2020 through 4 September 2020
ER -