Electrically tunable bandpass filter with narrow bandwidth of 27 nm

  • Ramesh Manda*
  • , Srinivas Pagidi
  • , Yunjin Heo
  • , Sub Shin Hoon
  • , Hong Gwon Lee
  • , Hyoung Soo Park
  • , Daun Mun
  • , Young Jin Lim
  • , Seung Hee Lee
  • *Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

We propose an electrically tunable narrow bandwidth bandpass filter in which the band gap of polymer stabilized blue phase liquid crystal (PS-BPLC) with distinct crystallographic orientations can be tuned on electric field sweeps from red to blue with a narrow bandwidth (27 nm). Owing to the narrow bandwidth which can cut specific wavelength, it could be used as a filter to enhance color gamut in LCDs. In addition, the proposed bandpass filter exhibits much wider viewing angle property than Cholesteric LC bandpass filter.

Original languageEnglish
Pages (from-to)1930-1933
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume51
Issue number1
DOIs
StatePublished - 2020
Event57th SID International Symposium, Seminar and Exhibition, Display Week, 2020 - Virtual, Online
Duration: 2020.08.32020.08.7

Keywords

  • Bandpass filter
  • Blue phase liquid crystal
  • Color gamut
  • Viewing angle

Quacquarelli Symonds(QS) Subject Topics

  • Engineering & Technology

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