LTPS-TFT Pixel Circuit Compensating for TFT Threshold Voltage Shift and IR-Drop on the Power Line for AMOLED DisplaysReport as inadecuate




LTPS-TFT Pixel Circuit Compensating for TFT Threshold Voltage Shift and IR-Drop on the Power Line for AMOLED Displays - Download this document for free, or read online. Document in PDF available to download.

Advances in Materials Science and EngineeringVolume 2012 2012, Article ID 270865, 5 pages

Research Article

Department of Electronic Engineering, National Taiwan University of Science and Technology, 43 Section 4, Keelung Road, Taipei 106, Taiwan

Graduate Institute of Electro-Optical Engineering, National Taiwan University of Science and Technology, 43 Section 4, Keelung Road, Taipei 106, Taiwan

Received 1 March 2012; Revised 29 April 2012; Accepted 8 May 2012

Academic Editor: Yong Qiu

Copyright © 2012 Ching-Lin Fan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We propose a new pixel design for the active matrix organic light-emitting diode AMOLED using low-temperature polycrystalline silicon thin-film transistors LTPS-TFTs. The proposed pixel is composed of four switching TFTs, one driving TFT DTFT, and one capacitor. The simulation results are performed by AIM-SPICE software. The error rate of OLED output current with threshold voltage variation 0.3 V and power line drop by 1 V are improved to about 1.67% and 15%, respectively. Thus, the proposed pixel circuit can successfully overcome drawbacks suffered from DTFT threshold voltage deviation and IR-drop on power line.





Author: Ching-Lin Fan, Min-Chi Shang, Wei-Chun Lin, Hsiu-Chen Chang, Kuang-Chi Chao, and Bo-Liang Guo

Source: https://www.hindawi.com/



DOWNLOAD PDF




Related documents