標題: Investigation of source-follower type analog buffer using low temperature poly-Si TFTs
作者: Chen, Bo-Ting
Tai, Ya-Hsiang
Wei, Ying-Jyun
Wei, Kai-Fang
Tsai, Chun-Chien
Huang, Chun-Yao
Kuo, Yu-Ju
Cheng, Huang-Chung
電子工程學系及電子研究所
光電工程學系
Department of Electronics Engineering and Institute of Electronics
Department of Photonics
關鍵字: source follower;LTPS-TFTs (low-temperature polycrystalline silicon thin film transistors);AMLCDs (active matrix liquid crystal displays);AMOLEDs (active matrix light emitting diodes)
公開日期: 1-Mar-2007
摘要: A new source follower circuit using low-temperature polycrystalline silicon thin film transistors (LTPS-TFTs) as analog buffer for the integrated data driver circuit of active matrix liquid crystal displays (AMLCDs) and active matrix light emitting diodes (AMOLEDs) is proposed and measured. Threshold voltage compensation circuit with two n-type thin film transistors, a capacitor, and four switches structure is used to enhance image quality for the display. The threshold voltage difference of driving TFTs and the unsaturated of output voltage are eliminated in this circuit. An active load is added and a calibration operation is applied to study the effects on the source follower circuit, the transistor operation mode region is also discussed. The proposed circuit is capable of minimizing the variation from both the signal timing and the device characteristics through the simulation and measured results. (C) 2007 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.sse.2006.12.007
http://hdl.handle.net/11536/11050
ISSN: 0038-1101
DOI: 10.1016/j.sse.2006.12.007
期刊: SOLID-STATE ELECTRONICS
Volume: 51
Issue: 3
起始頁: 354
結束頁: 359
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