Pseudo zero-dimension dimming for power reduction in field sequential color liquid crystal display systems

Chun Li Chu*, Ta Liang Chiu, Ke-Horng Chen

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Expensive hardware is required by the conventional two-dimensional (2-D) light-emitting diode (LED) dimming technique to obtain high-contrast and low-power in the field sequential color (FSC) technique. Thus, based on real-time image data, the pseudo zero-dimension (0-D) LED dimming technique is proposed to further reduce power dissipation in the D-FSC technique, which allows the intelligent selection of an adequate color sequence. The multi-liquid crystal and backlight (LC/BL) algorithm utilizes the D-FSC technique in temporal and spatial domains. It not only utilizes the pseudo 0-D technique to effectively reduce the color breakup (CBU) effect without greatly increasing frame rate, but also to reduce power consumption. On the backlight module, CBU suppression can be substantially improved and power dissipation can be reduced by at least 12.5%. Power consumption can also be further reduced through the re-dimming improvement in the proposed pseudo 0-D dimming technique.

Original languageEnglish
Article number5524643
Pages (from-to)323-331
Number of pages9
JournalIEEE/OSA Journal of Display Technology
Volume6
Issue number8
DOIs
StatePublished - 9 Aug 2010

Keywords

  • color breakup
  • dimming
  • Field sequential color (FSC)
  • light-emitting diode (LED) backlight
  • liquid crystal display (LCD)

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