New Compensating Pixel Circuit to Mitigate Impact of Leakage Currents on OLED Currents for AMOLED Displays

Wen Yen Shieh, Chia Ling Tsai, Bo Shu Chen, Chih Lung Lin

研究成果: Conference contribution

摘要

This work presents a pixel circuit which consists a matching TFT to compensate for the threshold voltage (VTH) of the driving TFT for use in low-frame-rate displays. A leakage compensation scheme is proposed to alleviate the distortion of the OLED driving current caused by the large leakage currents of low-temperature polycrystalline silicon thin-film transistors (L TPS TFTs) in the prolonged emission time. Simulation results show that the relative current error rates over the entire data voltage range are all below 3.9% as the VTH of the driving TFT varies by ± 0.5 V. Moreover, the variations in the OLED driving current are significantly decreased, verifying the feasibility of applying the proposed circuit to low- frame-rate wearable displays.

原文English
主出版物標題Proceedings of AM-FPD 2022 - 29th 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95-98
頁數4
ISBN(電子)9784991216923
DOIs
出版狀態Published - 2022
事件29th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2022 - Kyoto, Japan
持續時間: 2022 7月 52022 7月 8

出版系列

名字Proceedings of AM-FPD 2022 - 29th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials

Conference

Conference29th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, AM-FPD 2022
國家/地區Japan
城市Kyoto
期間22-07-0522-07-08

All Science Journal Classification (ASJC) codes

  • 硬體和架構
  • 電氣與電子工程
  • 媒體技術
  • 儀器

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