Chroman derivative and liquid-crystal composition containing...

Details Chroman derivative and liquid-crystal composition containing... Chroman derivative and liquid-crystal composition containing...

2007-06-05

2007-06-05

Wu, Shean C (Department: 1756)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C252S299010, C252S299610, C252S299620, C252S299630, C252S299660, C252S299670, C549S399000, C549S400000, C549S401000, C549S403000, C549S405000, C549S406000, C549S408000

Reexamination Certificate

active

10562644

ABSTRACT:
The present invention relates to a liquid crystal compound which has negative dielectric anisotropy and a large absolute value thereof; and a liquid crystal display element which contains the compound as a constituent element and has a negative value of dielectric anisotropy in the vertical alignment mode, IPS, or the like. The liquid-crystal display element has a structure including a pair of substrates and a liquid crystal sandwiched therebetween, and includes at least an alignment control layer, a transparent electrode, and a polarizing plate, in which the liquid crystal includes at least one compound having a partial structure represented by general formula (A):(wherein W1and W2each independently represents fluorine, chlorine, —CF3, —CF2H, —OCF3, or —OCF2H) and has negative dielectric anistropy.

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