A TFT-LCD source-driver IC with charge-recycling technique

Chih Wen Lu*, Kuo Jen Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

An innovative charge-recycling structure and a driving scheme for TFT-LCD source-driver IC application are proposed. A zero is used to obtain the stability and a coarse buffer is added to reduce the settling time. The numbers of switches and resistors, which are used for the charge recycling and stability, respectively, are greatly reduced. An experimental prototype 6-bit source driver with five-level seven-phase charge recycling implemented in a 0.35-μm CMOS technology demonstrates that the dc current consumption is only 830 μA for 262,144 colors and 102 μA for 512 colors, dynamic power saving is 70%, and the settling time, which includes the charge-recycling and data driving, is within 25 μs. The area overhead is only 130 × 1380 μm2.

Original languageEnglish
Pages (from-to)19-29
Number of pages11
JournalAnalog Integrated Circuits and Signal Processing
Volume66
Issue number1
DOIs
StatePublished - Jan 2011

Keywords

  • Charge-recycling
  • Dynamic power
  • Quiescent current
  • Source driver
  • TFT-LCD

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