Novel design of auto-compensation for TFT VTH and high-speed driving in active-matrix OLED displays

Wen Ching Chiu, Po Syun Chen, Chun Ming Lu, Ming Xun Wang, Chia Che Hung, Chih Lung Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This work presents a new pixel circuit composed of six low-Temperature polycrystalline-silicon (LTPS) thin-film transistors (TFTs) and two capacitors for active-matrix organic light-emitting diode (AMOLED) displays. New auto-compensation method is developed by cancelling the reference voltage which is required in general compensation circuits, thus improving the aperture ratio of pixel. By adopting the parallel addressing, the problem of long compensation time goes insignificant and driving speed of the proposed circuits can be as high as the conventional 2T circuit. TFTs and OLED are fabricated to establish models for HSPICE simulation. The current errors caused by VTH variations of TFTs are below 2% through the whole data range in ultra high-definition (UHD) displays.

Original languageEnglish
Title of host publicationAM-FPD 2017 - 24th International Workshop on Active-Matrix Flatpanel Displays and Devices
Subtitle of host publicationTFT Technologies and FPD Materials, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages54-57
Number of pages4
ISBN (Electronic)9784990875336
Publication statusPublished - 2017 Aug 8
Event24th International Workshop on Active-Matrix Flatpanel Displays and Devices, AM-FPD 2017 - Kyoto, Japan
Duration: 2017 Jul 42017 Jul 7

Publication series

NameAM-FPD 2017 - 24th International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials, Proceedings

Other

Other24th International Workshop on Active-Matrix Flatpanel Displays and Devices, AM-FPD 2017
CountryJapan
CityKyoto
Period17-07-0417-07-07

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computational Theory and Mathematics

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