US 11,939,509 B2
Liquid-crystalline medium
Harald Hirschmann, Darmstadt (DE); Monika Bauer, Seligenstadt (DE); Martina Windhorst, Muenster (DE); Marcus Reuter, Darmstadt (DE); and Kristin Weiss, Gross-Zimmern (DE)
Assigned to MERCK PATENT GMBH, Darmstadt (DE)
Filed by Merck Patent GmbH, Darmstadt (DE)
Filed on Feb. 3, 2021, as Appl. No. 17/166,262.
Application 17/166,262 is a division of application No. 16/196,488, filed on Nov. 20, 2018, granted, now 11,008,515.
Claims priority of application No. 102017010883.8 (DE), filed on Nov. 24, 2017; and application No. 18197753 (EP), filed on Sep. 28, 2018.
Prior Publication US 2022/0325181 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/1333 (2006.01); C09K 19/30 (2006.01); C09K 19/32 (2006.01); C09K 19/34 (2006.01); C09K 19/54 (2006.01); C09K 19/56 (2006.01); C09K 19/58 (2006.01); C09K 19/04 (2006.01); C09K 19/12 (2006.01); G02F 1/1362 (2006.01)
CPC C09K 19/3491 (2013.01) [C09K 19/30 (2013.01); C09K 19/3001 (2013.01); C09K 19/3003 (2013.01); C09K 19/3066 (2013.01); C09K 19/3068 (2013.01); C09K 19/3098 (2013.01); C09K 19/32 (2013.01); C09K 19/322 (2013.01); C09K 19/3402 (2013.01); C09K 19/3405 (2013.01); C09K 19/542 (2013.01); C09K 19/56 (2013.01); C09K 19/58 (2013.01); C09K 19/586 (2013.01); C09K 19/588 (2013.01); C09K 2019/0411 (2013.01); C09K 2019/0466 (2013.01); C09K 2019/123 (2013.01); C09K 2019/3004 (2013.01); C09K 2019/3009 (2013.01); C09K 2019/301 (2013.01); C09K 2019/3015 (2013.01); C09K 2019/3016 (2013.01); C09K 2019/3021 (2013.01); C09K 2019/3027 (2013.01); C09K 2019/303 (2013.01); C09K 2019/305 (2013.01); C09K 2019/3071 (2013.01); C09K 2019/3078 (2013.01); C09K 2019/3096 (2013.01); C09K 2019/327 (2013.01); C09K 2019/3408 (2013.01); C09K 2019/3422 (2013.01); C09K 2019/3425 (2013.01); C09K 2019/548 (2013.01); G02F 1/1362 (2013.01)] 28 Claims
 
1. A liquid-crystalline medium comprising:
at least one compound selected from the group of the compounds of the formulae IA to IH,

OG Complex Work Unit Chemistry
in which
Z1 denotes a single bond, —CH2CH2—, —CH═CH—, —CH2O—, —OCH2, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —(CH2)4—, —CHFCHF—, —CF2CH2—, —CH2CF2—, —C≡C—, —CF═CF—, or —CH2CF2O—;
at least one compound selected from the compounds of the following formulae:

OG Complex Work Unit Chemistry
in which
R2A, R2B and R2C each, independently of one another, denote H, an alkyl having 1 to 15 C atoms or alkenyl radical having 2 to 15 C atoms which is unsubstituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, where, in addition, one or more CH2 groups in these radicals may each be replaced by —O—, —S—,

OG Complex Work Unit Chemistry
—C≡C—, —CF2O—, —OCF2—, —OC—O— or —O—CO— in such a way that O atoms are not linked directly to one another, a cyclopropyl ring, cyclobutyl ring or cyclopentyl ring,
L1-4 each, independently of one another, denote F, Cl, CF3 or CHF2,
L5 is CH3,
Z2 and Z2′ each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —C≡C—, or —CH═CHCH2O—,
p denotes 0, 1 or 2,
q denotes 0 or 1, and
v denotes 1 to 6;
and wherein the medium has a negative dielectric anisotropy, Δε.