A charge-pump-based current feedback method for amoled displays

Chih-Lung Lin, Fu Chieh Chang, Po Chun Lai, Po Syun Chen, Wen Yen Chang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This work presents a new external driving scheme that uses the current feedback method with a 3T1C pixel circuit. The proposed circuit provides a stable OLED driving current by compensating for the threshold voltage shift of amorphous-silicon thin-film transistors (a-Si TFTs). For fabricated a-Si TFTs and the 0.35 μ m CMOS process associated with the proposed driving scheme, measurements reveal that the normalized OLED current degradation is less than 5% after 60 hours of operation at 60 °C. Moreover, for a data line load of 1.69 KΩ110 pF, the relative error rates between data currents and OLED currents are less than 4% within a settling time of 19. μm

Original languageEnglish
Article number6588572
Pages (from-to)783-786
Number of pages4
JournalIEEE/OSA Journal of Display Technology
Volume9
Issue number10
DOIs
Publication statusPublished - 2013 Oct 21

Fingerprint

Organic light emitting diodes (OLED)
Display devices
Pumps
Thin film transistors
pumps
Amorphous silicon
Feedback
Networks (circuits)
amorphous silicon
Threshold voltage
transistors
Pixels
settling
Degradation
thin films
threshold voltage
CMOS
pixels
degradation
shift

All Science Journal Classification (ASJC) codes

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

Cite this

Lin, Chih-Lung ; Chang, Fu Chieh ; Lai, Po Chun ; Chen, Po Syun ; Chang, Wen Yen. / A charge-pump-based current feedback method for amoled displays. In: IEEE/OSA Journal of Display Technology. 2013 ; Vol. 9, No. 10. pp. 783-786.
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A charge-pump-based current feedback method for amoled displays. / Lin, Chih-Lung; Chang, Fu Chieh; Lai, Po Chun; Chen, Po Syun; Chang, Wen Yen.

In: IEEE/OSA Journal of Display Technology, Vol. 9, No. 10, 6588572, 21.10.2013, p. 783-786.

Research output: Contribution to journalArticle

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