Novel Pixel Circuit With Compensation for Normally-Off/On a-IGZO TFTs and OLED Luminance Degradation

Chih Lung Lin, Po Syun Chen, Po Chun Lai, Ting Ching Chu, Ming Xun Wang, Chia Lun Lee

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This letter presents a new pixel circuit reaching simultaneous compensation for a threshold voltage (VTH) shift of normally-off and normally-on a-IGZO TFTs, as well as luminance drop of an OLED device for ultrahigh-definition active-matrix organic light-emitting diode displays. Simulation results demonstrate the successful detection of a 1 V shift of threshold voltage despite normally-off and normally-on characteristics by the novel source-follower structure. Furthermore, the interdependence between luminance and threshold voltage shift of the OLED device is measured. Based on the simulations using the measured interdependence, the luminance drop caused by OLED aging is suppressed below 5% at different data voltages.

Original languageEnglish
Article number7585085
Pages (from-to)1664-1667
Number of pages4
JournalJournal of Display Technology
Volume12
Issue number12
DOIs
Publication statusPublished - 2016 Dec

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'Novel Pixel Circuit With Compensation for Normally-Off/On a-IGZO TFTs and OLED Luminance Degradation'. Together they form a unique fingerprint.

Cite this