Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...
Reexamination Certificate
2007-12-03
2009-11-24
Wu, Shean C (Department: 1795)
Compositions
Liquid crystal compositions
Containing nonsteryl liquid crystalline compound of...
C252S299670, C252S299700, C544S357000, C544S358000, C544S359000, C544S360000, C544S392000, C544S395000, C544S405000
Reexamination Certificate
active
07622056
ABSTRACT:
The invention relates to a high dielectric anisotropy liquid crystal compound which is a pyridyl derivative with substituents of electrons push-pull effect. Furthermore, the high dielectric anisotropy liquid crystal compounds are colorless and have high thermal and photo stability as well as high compatibility in a liquid crystal host. A liquid crystal composition containing the high dielectric anisotropy liquid crystal compound can reduce threshold voltage of cholesteric reflective displays, thus saving power and extending lifetime of driver ICs.
REFERENCES:
patent: 57206672 (1982-12-01), None
Chen Ann-Cheng
Cheng Kung-Lung
Chin Chih-Lung
Haung Peu-Jane
Liu Shih-Hsien
Birch & Stewart Kolasch & Birch, LLP
Daily Polymer Corporation
Industrial Technology Research Institute
Wu Shean C
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