A source-follower type analog buffer using poly-Si TFTs with large design windows

Ya-Hsiang Tai*, Cheng Chiu Pai, Bo Ting Chen, Huang-Chung Cheng

*Corresponding author for this work

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

New simple source follower circuits using low-temperature polycrystalline silicon thin-film transistors (LTPS-TFTs) as analog buffers for the integrated data driver circuit of active-matrix liquid crystal displays and active-matrix light emitting diodes are discussed. In addition to the threshold voltage difference of driving TFTs, the unsaturated of output voltage arisen from the significant subthreshold current will also result in the difficulty of the buffer circuit design. The proposed circuit is capable of minimizing the variation from both the signal timing and the device characteristics.

Original languageEnglish
Pages (from-to)811-813
Number of pages3
JournalIEEE Electron Device Letters
Volume26
Issue number11
DOIs
StatePublished - 1 Nov 2005

Keywords

  • Active-matrix light emitting diodes (AMOLEDs)
  • Active-matrix liquid crystal displays (AMLCDs)
  • Low-temperature polycrystalline silicon thin-film transistors (LTPS-TFTs)
  • Source follower

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