Back to results
US 2026/0132337 A1Published application
Liquid crystal medium and electronic component
AssigneeMerck Patent GmbH
InventorsIzumi SAITO, Elisabeth MEYER
Life of this patent
Estimating the term…
Abstract
A liquid crystal medium and liquid crystal material comprising a) one or more compounds of formula I and one or more compounds of the formula T: and an electronic component comprising said LC medium, operable in the visible (VIS), infrared (IR) or microwave region of the electromagnetic spectrum. Also, the use of said LC medium in the IR, VIS or microwave region and devices comprising said electronic component.
Claims18
A liquid crystal medium comprising
- a) one or more compounds of formula I
- in which
- R11 and R12, identically or differently, denote H, alkyl or alkoxy having 1 to 12 C atoms, or alkenyl, alkenyloxy or alkoxyalkyl having 2 to 12 C atoms, in which one or more CH2-groups may be replaced by
- and in which one or more H atoms may be replaced by fluorine,
- L11, L12, L13 identically or differently, denote H, CH3, Cl or F,
- A11 denotes phenylene-1,4-diyl, in which one or two CH groups may be replaced by N and one or more H atoms may be replaced by halogen, CN, CH3, CHF2, CH2F, CF3, OCH3, OCHF2 or OCF3, or cyclohexane-1,4-diyl or cyclohexene-1,4-diyl, in each of which one or two non-adjacent CH2 groups may be replaced, independently of one another, by 0 and/or S and one or more H atoms may be replaced by F, or bicyclo[1.1.1]pentane-1,3-diyl, bicyclo[2.2.2]octane-1,4-diyl, spiro[3.3]heptane-2,6-diyl, tetrahydropyran-2,5-diyl or 1,3-dioxane-2,5-diyl, in which one or more H atoms may be replaced by F,
- A12 denotes phenylene-1,4-diyl, in which one or two CH groups may be replaced by N and one or more H atoms may be replaced by halogen, CN, CH3, CHF2, CH2F, CF3, OCH3, OCHF2 or OCF3, or cyclohexane-1,4-diyl or cyclohexene-1,4-diyl, in each of which one or two non-adjacent CH2 groups may be replaced, independently of one another, by 0 and/or S and one or more H atoms may be replaced by F,
- Z1 denotes a single bond, —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF— or —CH═CHCH2O—,
- n is 0 or 1;
- and
- b) one or more compounds of the formula T,
- in which
- RT1 and RT2, identically or differently, denote halogen, CN, NCS, straight chain alkyl or alkoxy having 1 to 15 C atoms, straight chain alkenyl or alkenyloxy having 2 to 15 C atoms or branched alkyl, alkoxy, alkenyl or alkenyloxy having 3 to 15 C atoms, where one or more CH2 groups in these radicals may each be replaced, independently of one another, by
- —C═C—, —CF2O—, —OCF2—, —CH═CH—, —O—, —CO—O—or —O—CO— in such a way that O atoms are not linked directly to one another, and in which one or more H atoms may be replaced by halogen,
- RT3 denotes F, CN, straight chain alkyl or alkoxy having 1 to 5 C atoms, straight chain alkenyl or alkenyloxy having 2 to 5 C atoms or branched alkyl, alkoxy, alkenyl or alkenyloxy having 3 to 5 C atoms, where a CH2 groups in these radicals may be replaced by
- and in which one or more H atoms may be replaced by halogen,
- A0, A1, and A2, each, independently of one another, denote phenylene-1,4-diyl, in which one or two CH groups may be replaced by N and one or more H atoms may be replaced by halogen, CN, CH3, CHF2, CH2F, CF3, OCH3, OCHF2 or OCF3, cyclohexane-1,4-diyl, in which one or two non-adjacent CH2 groups may be replaced, independently of one another, by 0 and/or S and one or more H atoms may be replaced by F, cyclohexene-1,4-diyl, bicyclo[1.1.1]pentane-1,3-diyl, bicyclo[2.2.2]octane-1,4-diyl, spiro[3.3]heptane-2,6-diyl, tetrahydropyran-2,5-diyl or 1,3-dioxane-2,5-diyl;
- Z1 and Z2, each, independently of one another, denote —CF2O—, —OCF2—, —CH2O—, —OCH2—, —CO—O—, —O—CO—, —C2H4—, —C2F4, —CF2CH2—, —CH2CF2—, —CFHCFH—, —CFHCH2—, —CH2CFH—, —CF2CFH—, —CFHCF2—, —CH═CH—, —CF═CH—, —CH═CF—, —CF═CF—, —C≡C— or a single bond;
- n denotes 0, 1, 2 or 3;
- and
- m denotes 0, 1, 2 or 3.
18 more elements
Dependencies are inferred from the claim text.