Adaptive LC/BL Feedback Control in Field Sequential Color LCD Technique for Color Breakup Minimization

Yi-Pai Huang, Han-Ping Shieh, Ke-Horng Chen, Chun Ho Chen, Fang Cheng Lin

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

A full-color image on field sequential color (FSC) displays is composed of color fields in temporal sequence. With the FSC mechanism, color filters of liquid crystal displays (LCDs) can be removed to heighten the light efficiency and lower the material cost. Color breakup (CBU), however, has appeared intrinsically to degrade visual qualities. A novel gray level determination of liquid crystal and backlight (LC/BL) was proposed to suppress the CBU artifact on FSC-LCDs. Based on the image content in each frame, a dominated color-mixed field was found to minimize the color difference between the CBU and original image. Additionally, the feedback algorithm for the adaptive LC/BL signals was developed and implemented on a 32-inch optically compensated bend (OCB) mode LC panel. According to the evaluation of experiments and observations, the proposed method has been demonstrated to greatly suppress CBU in LCD applications.

Original languageEnglish
Pages (from-to)290-295
Number of pages6
JournalIEEE/OSA Journal of Display Technology
Volume4
Issue number3
DOIs
StatePublished - Sep 2008

Keywords

  • Color breakup (CBU)
  • feedback control
  • field sequential color (FSC)

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