Nematic liquid crystal composition containing indane compound

Details Nematic liquid crystal composition containing indane compound Nematic liquid crystal composition containing indane compound

2007-06-19

2007-06-19

Wu, Shean C. (Department: 1756)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299620, C252S299630, C570S183000, C570S187000

Reexamination Certificate

active

10536421

ABSTRACT:
The present invention provides a nematic liquid crystal composition using a 4,6-difluoroindane-based compound that has a low lower limit temperature (T→N) of the liquid crystal phase, high upper limit temperature (TN-I) of the liquid crystal phase, and wide liquid crystal phase temperature range without impairing response speed, threshold voltage and other liquid crystal characteristics within a the range of the optimal Δn as a nematic liquid crystal, and a 4,6-difluoroindane-based compound that is used in said liquid crystal composition.The nematic liquid crystal composition contains at least one type of compound having a 4,6-difluoroindan-2,5-diyl group, and the refractive index anisotropy is within the range of 0.08 to 0.15, the liquid crystal phase upper limit temperature is 70° C. or higher, the liquid crystal phase lower limit temperature is −20° C. or lower, and the difference between the liquid crystal phase upper limit temperature and liquid crystal phase lower limit temperature is 90° C. or more.

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English translation by computer for JP 2001-164252, http://www4.ipdl.ncipi.go.jp/Tokujitu/PAJdetail.ipdl?N0000=60&N0120=01&N2001=2&N3001=2001-164252.
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