Design of organic TFT pixel electrode circuit for active-matrix OLED displays

Aram Shin, Sang Jun Hwang, Seung Woo Yu, Man Young Sung

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


A new current-programming pixel circuit for active-matrix organic light-emitting diode (AM-OLED) displays, composed of four organic thin-film transistors (OTFTs) and one capacitor, has been designed, simulated and evaluated. The most critical issue in realizing AM-OLED displays with OTFTs is the variation and aging of the driving-TFTs and degradation of OLEDs. This can cause image sticking or degradation of image quality. These problems require compensation methods for high-quality display applications, and pixel level approach is considered to be one of the most important factors for improving display image quality. Our design shows that the current OLED and OTFT technology can be implemented for AM-OLED displays, compensating the degradation of OTFT device characteristics.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalJournal of Computers
Issue number3
Publication statusPublished - 2008 Mar


  • Active-matrix organic light-emitting diode (AM-OLED)
  • Current-programming
  • Organic thin-film transistor (OTFT)
  • Pixel circuit
  • Simulation analysis

ASJC Scopus subject areas

  • General Computer Science


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