Color filter-less LCDs in achieving high contrast and low power consumption by stencil field-sequential-color method

Fang Cheng Lin*, Yi-Pai Huang, Ching Ming Wei, Han Ping D. Shieh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

The field-sequential-color liquid crystal display (FSC-LCD) without a color filter enables high light efficiency, wide color gamut, and low material cost. However, the visual defect of color breakup (CBU) is perceived when relative velocities exist between the screen image and the human eye. We proposed the Stencil-FSC method with a 240-Hz field rate to make CBU imperceptible. Given the Stencil-FSC method, the hardware parameters were optimized to reduce hardware complexity while maintaining sufficient suppression of CBU. After implementing Stencil-FSC on a 32-in FSC-LCD, the image contrast ratio was shown to be ten times more than that of a conventional CCFL LCD, and the average power consumption was reduced to less than 35 Wa-a67% savings in power consumption.

Original languageEnglish
Article number5419284
Pages (from-to)98-106
Number of pages9
JournalIEEE/OSA Journal of Display Technology
Volume6
Issue number3
DOIs
StatePublished - 1 Mar 2010

Keywords

  • Color breakup (CBU)
  • Field-sequential color (FSC)
  • Low power consumption
  • Stencil

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