Browsing by Author "Chuang, YY"

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High birefringent bistolane liquid crystals for LCD application
(1999)
Hsu, CS
;
Shyu, KF
;
Chuang, YY
;
Wu, ST
;
應用化學系
Several series of bistolane liquid crystals were synthesized and characterized. The structure-properties relationship of the obtained compounds is discussed. These highly conjugated liquid crystals exhibit not only high birefringence but also low melting temperature. Their potential applications for Rat panel display employing light scattering on Bragg reflection are emphasized.
Physical properties of polar bis-tolane liquid crystals
(2000-01-15)
Wu, ST
;
Hsu, CS
;
Chuang, YY
;
Cheng, HB
;
應用化學系
Several cyano and fluoro bis-tolane liquid crystals were synthesized and their physical properties evaluated. Some of these highly conjugated liquid crystals possess birefringence larger than 0.5 in the visible region. Adding 10% of a binary bis-tolane mixture to a cholesteric display enhances the brightness by more than 20%.
Room temperature bis-tolane liquid crystals
(1999-03-15)
Wu, ST
;
Hsu, CS
;
Chuang, YY
;
應用化學系
;
Department of Applied Chemistry
Several room temperature bis-tolane liquid crystals were synthesized and their physical properties evaluated at elevated temperatures. These highly conjugated liquid crystals exhibit not: only high birefringence (Delta n > 0.4) but also low melting temperature. Their applications for flat panel displays employing light scattering or Bragg reflection and for infrared spatial light modulators are emphasized.
Synthesis of laterally substituted bistolane liquid crystals
(2000-02-01)
Hsu, CS
;
Shyu, KF
;
Chuang, YY
;
Wu, ST
;
應用化學系
Methods for synthesizing bistolane liquid crystal materials with lateral methyl and ethyl substituents are presented. Some of the bistolanes are nematic at room temperature. These highly conjugated mesogens exhibit wide nematic ranges, small enthalpies of fusion, high birefringence and modest viscosity. Their potential applications for flat panel displays employing light scattering or Bragg reflection and for infrared optically phased arrays are foreseeable.