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US 10,400,169 B2Granted
Liquid-crystalline medium
AssigneeMerck Patent GmbH
InventorsHarald Hirschmann, Monika Bauer, Martina Windhorst, Marcus Reuter, Constanze Brocke, Rocco Fortte, Matthias Bremer, Sabine Schoen
Life of this patent
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Abstract
The invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1, R1*, Z1, Z2 and L1-3 have the meanings defined herein, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS, PS-FFS, PS-IPS or IPS effect.
Claims63
A liquid-crystalline medium comprising:
- at least one compound of formula I,
- in which
- R1 and
- R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each optionally be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
- —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may each optionally be replaced by halogen,
- Z1 and Z2 each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —C≡C—, —CF═CF—, or —CH═CHCHO—, and
- L1-3 each, independently of one another, denote F, Cl, CF3, OCF3 or CHF2;
- at least one polymerizable compound and/or one or more additives;
- and
- one or more compounds selected from the group of the compounds of formulae IIA, IIB and IIC,
- in which
- R2A, R2B and R2C each, independently of one another, denote H, an alkyl or alkenyl radical having up to 15 C atoms which is un-substituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, where, in addition, one or more CH2 groups in these radicals may each optionally be replaced by —O—, —S—,
- —C≡C—, —CF2O—, —OCF2—, —OC—O— or —O—CO— in such a way that O atoms are not linked directly to one another,
- L1-4 each, independently of one another, denote F, Cl, CF3 or CHF2,
- 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—,
- (O) denotes a single bond or —O—,
- p denotes 0, 1 or 2,
- q denotes 0 or 1, and
- v denotes 1 to 6.
16 more elements
A liquid-crystalline medium comprising:
- at least one compound of formula I,
- in which
- R1 and
- R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each optionally be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
- —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may each optionally be replaced by halogen,
- Z1 and Z2 each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —C≡C—, —CF═CF—, or —CH═CHCHO—, and
- L1-3 each, independently of one another, denote F, Cl, CF3, OCF3 or CHF2;
- at least one polymerizable compound and/or one or more additives;
- and
- one or more compounds of formulae L-1 to L-11,
- in which
- R, R1 and R2 each, independently of one another, denotes H, an alkyl or alkenyl radical having up 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 optionally be replaced by —O—, —S—,
- —C≡C—, —CF2O—, —OCF2—, —OC—O— or —O—CO— in such a way that O atoms are not linked directly to one another,
- (O) denotes a single bond or —O—,
- alkyl denotes an alkyl radical having 1-6 C atoms, and
- s denotes 1 or 2.
13 more elements
A liquid-crystalline medium comprising:
- at least one compound of formula I,
- in which
- R1 and
- R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each optionally be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
- —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may each optionally be replaced by halogen,
- Z1 and Z2 each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —C≡C—, —CF═CF—, or —CH═CHCHO—, and
- L1-3 each, independently of one another, denote F, Cl, CF3, OCF3 or CHF2;
- at least one polymerizable compound and/or one or more additives;
- and
- one or more compounds selected from the group of compounds of formulae BC, CR, PH-1, PH-2, BF-1, BF-2, BS-1 and BS-2,
- in which
- RB1, RB2, RCR1, RCR2, R1, R2 each, independently of one another, denotes H, an alkyl or alkenyl radical having up 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 optionally be replaced by —O—, —S—,
- —C≡C—, —CF2O—, —OCF2—, —OC—O— or —O—CO— in such a way that O atoms are not linked directly to one another,
- c denotes 0, 1 or 2, and
- d denotes 1 or 2.
12 more elements
A liquid-crystalline medium comprising:
- at least one compound of formula I,
- in which
- R1 and
- R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each optionally be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
- —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may each optionally be replaced by halogen,
- Z1 and Z2 each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —C≡C—, —CF═CF—, or —CH═CHCHO—, and
- L1-3 each, independently of one another, denote F, Cl, CF3, OCF3 or CHF2;
- and
- at least one polymerizable compound and/or one or more additives;
- wherein said medium comprises 5-60% of the compound of the formula
7 more elements
A liquid-crystalline medium comprising:
- at least one compound of formula I,
- in which
- R1 and
- R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each optionally be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
- —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may each optionally be replaced by halogen,
- Z1 and Z2 each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —C≡C—, —CF═CF—, or —CH═CHCHO—, and
- L1-3 each, independently of one another, denote F, Cl, CF3, OCF3 or CHF2;
- at least one polymerizable compound and/or one or more additives;
- and
- one or more biphenyls of formulae B-1 to B-3,
- in which
- alkyl and alkyl* each, independently of one another, denote a straight-chain alkyl radical having 1-6 C atoms, and
- alkenyl and alkenyl* each, independently of one another, denote a straight-chain alkenyl radical having 2-6 C atoms.
10 more elements
A liquid-crystalline medium comprising:
- at least one compound of formula I,
- in which
- R1 and
- R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each optionally be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
- —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may each optionally be replaced by halogen,
- Z1 and Z2 each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —C≡C—, —CF═CF—, or —CH═CHCHO—, and
- L1-3 each, independently of one another, denote F, Cl, CF3, OCF3 or CHF2;
- at least one polymerizable compound and/or one or more additives;
- and
- one or more compounds of formulae Z-1 to Z-9
- in which
- R denotes H, an alkyl or alkenyl radical having up to 15 C atoms which is unsubstituted, or monosubstituted by CN or CF3 or at least monosubstituted by halogen, where, in addition, one or more CH2 groups in these radicals are each optionally replaced by —O—, —S—,
- —C≡C—, —CF2O—, —OCF2—, —OC—O— or —O—CO— in such a way that O atoms are not linked directly to one another,
- (O) denotes a single bond or —O—, and
- alkyl denotes an alkyl radical having 1-6 C atoms.
12 more elements
A liquid-crystalline medium comprising:
- at least one compound of formula I,
- in which
- R1 and
- R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each optionally be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
- —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may each optionally be replaced by halogen,
- Z1 and Z2 each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —C≡C—, —CF═CF—, or —CH═CHCHO—, and
- L1-3 each, independently of one another, denote F, Cl, CF3, OCF3 or CHF2;
- at least one polymerizable compound and/or one or more additives;
- and
- a compound of formula CC-3-V
- and a compound of formula CC-3V-1
8 more elements
A liquid-crystalline medium comprising:
- at least one compound of formula I,
- in which
- R1 and
- R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each optionally be replaced, independently of one another, by —C≡C—, —CF2O—, —CH═CH—,
- —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may each optionally be replaced by halogen,
- Z1 and Z2 each, independently of one another, denote a single bond, —CH2CH2—, —CH═CH—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —C2F4—, —C≡C—, —CF═CF—, or —CH═CHCHO—, and
- L1-3 each, independently of one another, denote F, Cl, CF3, OCF3 or CHF2;
- at least one polymerizable compound and/or one or more additives;
- and
- at least one compound selected from formulae O-10a to O-10b and at least one compound selected from formulae O-17z to O-17d:
7 more elements
Dependencies are inferred from the claim text.