Tolane derivatives and liquid crystalline medium

Details Tolane derivatives and liquid crystalline medium Tolane derivatives and liquid crystalline medium

2007-08-14

2007-08-14

Richter, Johann (Department: 1624)

Compositions

Liquid crystal compositions

C252S299600, C349S001000, C349S192000, C558S411000

Reexamination Certificate

active

10848385

ABSTRACT:
Tolane compounds of the formula Iwherein R1, R2, L1, L2and L3are as defined herein, are described. Further described are liquid-crystalline media comprising at least one tolane compound of formula I as well as liquid-crystal display elements containing such a liquid-crystalline medium.

REFERENCES:
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Partial European Search Report dated Aug. 17, 2004.
S. Greenfield et al., “Laterally Fluorinated Tolanes of Low Melting Point”, Liquid Crystals, Taylor and Francis Ltd., London, vol. 13, No. 2, (1993), pp. 301-305.

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