A-InGaZnO Active-Matrix Organic LED Pixel Periodically Detecting Thin-Film Transistor Threshold Voltage Once for Multiple Frames

Chih Lung Lin, Yen Ting Liu, Ching En Lee, Po Syun Chen, Ting Ching Chu, Chia Che Hung

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This letter proposes a new voltage-programmed amorphous indium-gallium-zinc-oxide (a-IGZO) thin-film transistor (TFT) pixel circuit for active-matrix organic light-emitting diode (AMOLED) displays. The proposed circuit detects the VTH of the driving TFT only in a periodically executed compensation frame, allowing the other frames to perform only data input and emission for high-speed applications. An HSPICE model is also established based on the measured electrical characteristics of a fabricated a-IGZO TFT. The simulation results reveal that the proposed circuit can compensate for the degradation of the driving TFT and the OLED without external circuits. Moreover, the current error rates are <6.32%, so the proposed circuit is effective for use in AMOLED displays.

Original languageEnglish
Article number7273841
Pages (from-to)1166-1168
Number of pages3
JournalIEEE Electron Device Letters
Volume36
Issue number11
DOIs
Publication statusPublished - 2015 Nov 1

Fingerprint

Thin film transistors
Threshold voltage
Light emitting diodes
Pixels
Organic light emitting diodes (OLED)
Networks (circuits)
Zinc Oxide
Gallium
Indium
Zinc oxide
Oxide films
Display devices
Degradation
Electric potential

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Lin, Chih Lung ; Liu, Yen Ting ; Lee, Ching En ; Chen, Po Syun ; Chu, Ting Ching ; Hung, Chia Che. / A-InGaZnO Active-Matrix Organic LED Pixel Periodically Detecting Thin-Film Transistor Threshold Voltage Once for Multiple Frames. In: IEEE Electron Device Letters. 2015 ; Vol. 36, No. 11. pp. 1166-1168.
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A-InGaZnO Active-Matrix Organic LED Pixel Periodically Detecting Thin-Film Transistor Threshold Voltage Once for Multiple Frames. / Lin, Chih Lung; Liu, Yen Ting; Lee, Ching En; Chen, Po Syun; Chu, Ting Ching; Hung, Chia Che.

In: IEEE Electron Device Letters, Vol. 36, No. 11, 7273841, 01.11.2015, p. 1166-1168.

Research output: Contribution to journalArticle

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