CPC C09K 19/3405 (2013.01) [C09K 19/12 (2013.01); C09K 19/2007 (2013.01); C09K 19/3003 (2013.01); C09K 19/32 (2013.01); C09K 19/3491 (2013.01); C09K 2019/122 (2013.01); C09K 2019/123 (2013.01); C09K 2019/124 (2013.01); C09K 2019/125 (2013.01); C09K 2019/2078 (2013.01); C09K 2019/301 (2013.01); C09K 2019/3004 (2013.01); C09K 2019/3009 (2013.01); C09K 2019/3012 (2013.01); C09K 2019/3016 (2013.01); C09K 2019/3025 (2013.01); C09K 2019/3422 (2013.01)] | 11 Claims |
1. A liquid crystal (LC) medium comprising 0.1 to 2% by weight, based on the total weight of the LC medium, of only one compound of formula LB
in which the individual radicals, on each occurrence identically or differently, and each, independently of one another, have the following meaning:
R1 alkyl, alkoxy, oxaalkyl or alkoxyalkyl having 1 to 9 C atoms or alkenyl or alkenyloxy having 2 to 9 C atoms, all of which are optionally fluorinated,
L1, L2 F or Cl,
X1 fluorinated alkyl or alkoxy with 1, 2 or 3 C atoms,
Y1 O or S,
said medium having negative dielectric anisotropy of −2.5 to −7.5 at 20° C. and 1 kHz.
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