New External Compensated Circuit to Achieve Uniform OLED Luminance for High-Resolution AMOLED Displays

Wei Sheng Liao, Po Syun Chen, Chia Ling Tsai, Chih Lung Lin

研究成果: Conference contribution

摘要

This work proposes a simple-structure pixel circuit composed of low-temperature polycrystalline-silicon thin-film transistors (LTPS-TFTs) and external threshold voltage (VTH) compensation circuit shared by whole row for active-matrix organic light-emitting diode (AMOLED) displays. This proposed circuit combines parallel addressing scheme and voltage-programming method to increase compensation time for accurately detecting threshold voltage variations of driving TFT, and the voltage drop (I-R drop) in power line. Simulation results show that the relative emission current error rates are below 2.93 % and 2.62 % when variations of VTH are ± 0.5 V and VDD I-R drop is ±0.5 V, respectively, verifying that the novel pixel design has great potential for use in high resolution AMOLED displays.

原文English
主出版物標題AM-FPD 2019 - 26th International Workshop on Active-Matrix Flatpanel Displays and Devices
主出版物子標題TFT Technologies and FPD Materials, Proceedings
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9784990875374
DOIs
出版狀態Published - 2019 7月
事件26th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2019 - Kyoto, Japan
持續時間: 2019 7月 22019 7月 5

出版系列

名字AM-FPD 2019 - 26th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, Proceedings

Conference

Conference26th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2019
國家/地區Japan
城市Kyoto
期間19-07-0219-07-05

All Science Journal Classification (ASJC) codes

  • 電腦繪圖與電腦輔助設計
  • 媒體技術
  • 電子、光磁材料
  • 儀器

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