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 journalArticle

2 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

Fingerprint

Organic light emitting diodes (OLED)
luminance
threshold voltage
Luminance
Pixels
pixels
Threshold voltage
degradation
Degradation
Networks (circuits)
shift
electric potential
light emitting diodes
simulation
Aging of materials
Display devices
matrices
Compensation and Redress
Electric potential

All Science Journal Classification (ASJC) codes

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

Cite this

Lin, Chih Lung ; Chen, Po Syun ; Lai, Po Chun ; Chu, Ting Ching ; Wang, Ming Xun ; Lee, Chia Lun. / Novel Pixel Circuit With Compensation for Normally-Off/On a-IGZO TFTs and OLED Luminance Degradation. In: Journal of Display Technology. 2016 ; Vol. 12, No. 12. pp. 1664-1667.
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Novel Pixel Circuit With Compensation for Normally-Off/On a-IGZO TFTs and OLED Luminance Degradation. / Lin, Chih Lung; Chen, Po Syun; Lai, Po Chun; Chu, Ting Ching; Wang, Ming Xun; Lee, Chia Lun.

In: Journal of Display Technology, Vol. 12, No. 12, 7585085, 12.2016, p. 1664-1667.

Research output: Contribution to journalArticle

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