Pixel circuit with external current source to achieve fast compensation for variations of LTPS TFTs for AMOLED displays

Chih Cheng Hsu, Chun Ming Lu, Po Chun Lai, Po Syun Chen, Chih Lung Lin

研究成果: Conference contribution

摘要

This work proposes a new pixel circuit of low-Temperature polycrystalline-silicon thin-film transistors (LTPS-TFTs) for active-matrix organic light-emitting diode (AMOLED) displays, which combines parallel addressing scheme, current-programmed, and voltage-programmed methods. The proposed pixel circuit is used to compensate for the threshold voltage variations of driving TFT, and the current-resistance voltage drop in power line (I-R drop). Moreover, the proposed pixel circuit can avoid flicker and extend compensation time. The simulation results demonstrate that the relative current error rates are less than 5% and 1% as the variations of threshold voltage and I-R drop are ±0.5 V and -0.5 V, respectively.

原文English
主出版物標題AM-FPD 2017 - 24th 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.
頁面147-150
頁數4
ISBN(電子)9784990875336
出版狀態Published - 2017 八月 8
事件24th International Workshop on Active-Matrix Flatpanel Displays and Devices, AM-FPD 2017 - Kyoto, Japan
持續時間: 2017 七月 42017 七月 7

出版系列

名字AM-FPD 2017 - 24th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, Proceedings

Other

Other24th International Workshop on Active-Matrix Flatpanel Displays and Devices, AM-FPD 2017
國家/地區Japan
城市Kyoto
期間17-07-0417-07-07

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程
  • 計算機理論與數學

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