標題: Threshold-voltage-compensation methods for AMOLED pixel and analog buffer circuits
作者: Chen, Bo-Ting
Tai, Ya-Hsiang
Wei, Ying-Jyun
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
顯示科技研究所
Department of Electronics Engineering and Institute of Electronics
Department of Photonics
Institute of Display
關鍵字: pixel circuit;AMOLED;LTPS-TFT;analog buffer;AMLCD
公開日期: 1-九月-2006
摘要: New pixel-circuit designs for active-matrix organic light-emitting diodes (AMOLEDs) and a new analog buffer circuit for the integrated data-driver circuit of active-matrix liquid-crystal displays (AMLCDs) and AMOLEDs, based on low-temperature polycrystalline-silicon thin-film transistors (LTPS-TFTs), were proposed and verified by SPICE simulation and measured results. Threshold-voltage-compensation pixel circuits consisting of LTPS-TFTs, an additional control signal line, and a storage capacitor were used to enhance display-image uniformity. A diode-connected concept is used to calibrate the threshold-voltage variation of the driving TFT in an AMOLED pixel circuit. An active load is added and a calibration operation is applied to study the influences on the analog buffer circuit. The proposed circuits are shown to be capable of minimizing the variation from the device characteristics through the simulation and measured results.
URI: http://dx.doi.org/10.1889/1.2358573
http://hdl.handle.net/11536/11898
ISSN: 1071-0922
DOI: 10.1889/1.2358573
期刊: JOURNAL OF THE SOCIETY FOR INFORMATION DISPLAY
Volume: 14
Issue: 9
起始頁: 793
結束頁: 800
顯示於類別:期刊論文