New LTPS pixel circuit with AC driving method to reduce OLED degradation for 3D AMOLED displays

Chih Lung Lin, Chia Che Hung, Pin Yen Kuo, Mao Hsun Cheng

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

This work presents a new low-temperature polysilicon (LTPS) thin-film transistor pixel circuit with a novel driving scheme that is based on the simultaneous emission and reverse-biased methods. During high-speed 3D operation at 240 Hz, the proposed circuit can successfully compensate for the TFT threshold voltage variation and improve the IR drop in the power line. Simulation and experimental results confirm the stability of the OLED current and the amelioration of the OLED lifetime. Furthermore, over the entire range of data voltages, the nonuniformity of OLED current is less than 5%.

Original languageEnglish
Article number6353225
Pages (from-to)681-683
Number of pages3
JournalIEEE/OSA Journal of Display Technology
Volume8
Issue number12
DOIs
Publication statusPublished - 2012 Nov 29

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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