Compositions – Liquid crystal compositions
Reexamination Certificate
2005-08-24
2008-07-15
Visconti, Geraldina (Department: 1795)
Compositions
Liquid crystal compositions
C430S020000, C428S001100
Reexamination Certificate
active
07399427
ABSTRACT:
Liquid crystal compositions are provided having a high “higher limit temperature” of a nematic phase, a low “lower limit temperature” of a nematic phase, small viscosity, suitable optical anisotropy, low threshold voltage and large specific resistance. The composition includes at least one compound selected from a group of compounds represented by formula (1) as a first component, at least one compound selected from a group of compounds represented by formula (2) as a second component, at least one compound selected from a group of compounds represented by formula (3) as a third component, and at least one compound selected from a group of compounds represented by formulae (4) and (5) as a fourth component:wherein R1is alkyl; R2is alkenyl; R3is alkyl or alkenyl; A1and A2are 1,4-phenylene, for example; Z1, Z2, and Z3are a single bond, for example; Y1and Y2are fluorine, for example.
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Chisso Corporation
Chisso Petrochemical Corporation
Hogan & Hartson LLP
Visconti Geraldina
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