Compensation Pixel Circuit Based on LTPS TFTs to Improve Effect of Leakage Current for AMOLED Displays with Low Frame Rate

Po Ting Lee, Yu Sheng Lin, Chih Lung Lin

研究成果: Conference contribution

摘要

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.

原文English
主出版物標題Proceedings of AM-FPD 2020 - 27th International Workshop on Active-Matrix Flatpanel Displays and Devices
主出版物子標題TFT Technologies and FPD Materials
發行者Institute of Electrical and Electronics Engineers Inc.
頁面107-110
頁數4
ISBN(電子)9784990875398
DOIs
出版狀態Published - 2020 九月
事件27th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2020 - Virtual, Kyoto, Japan
持續時間: 2020 九月 12020 九月 4

出版系列

名字Proceedings of AM-FPD 2020 - 27th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials

Conference

Conference27th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2020
國家Japan
城市Virtual, Kyoto
期間20-09-0120-09-04

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Media Technology
  • Electronic, Optical and Magnetic Materials

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