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P‐146: Electrically Tunable Bandpass Filter with Narrow Bandwidth of 27 nm
Author(s) -
Manda Ramesh,
Pagidi Srinivas,
Heo Yunjin,
Hoon Sub Shin,
Lee Hong Gwon,
Park Hyoung Soo,
Mun Daun,
Lim Young Jin,
Lee Seung Hee
Publication year - 2020
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.14287
Subject(s) - band pass filter , materials science , bandwidth (computing) , optoelectronics , liquid crystal tunable filter , electric field , wavelength , optical filter , optics , computer science , telecommunications , physics , quantum mechanics
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.