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US 2020/0032142 A1Published application
Liquid-crystal lens
AssigneeMerck Patent GmbH
InventorsArnold (Jer-Wei) CHANG, Roger (Chih-chieh) CHANG, Ray (Kuang-Ting) CHOU
Life of this patent
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Abstract
A LC lens and a liquid-crystal medium used in said LC lens, wherein the medium contains one or more compounds of each of formulae I and II
Claims17
A liquid-crystal lens comprising an electrode on a substrate and a liquid-crystal medium, wherein the liquid-crystal medium comprises
- 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 independently of one another, denote H, Cl or F,
- denotes
- denotes
- Z1 denotes denote a single bond, —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, or —CH═CHCH2O—,
- n is 0 or 1;
- and
- one or more compounds of formula II
- in which
- R2 denotes 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,
- X2 denotes F, Cl, CF3, OCF3, CN or NCS,
- Z2 denotes C═O or CF2,
- L21, L22 and L23 identically or differently, denote, H or F,
- L2 denotes H or alkyl having 1 to 6 C atoms,
- and, in case
- alternatively denotes
- and
- m and n are, independently of each other, 0 or 1.
19 more elements
A liquid-crystal medium comprising
- 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 independently of one another, denote H, Cl or F,
- denotes
- denotes
- Z1 denotes denote a single bond, —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, or —CH═CHCH2O—,
- n is 0 or 1;
- and
- one or more compounds of formula II
- in which
- R2 denotes 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,
- X2 denotes F, Cl, CF3, OCF3, CN or NCS,
- Z2 denotes C═O or CF2,
- L21, L22 and L23 identically or differently, denote, H or F,
- L2 denotes H or alkyl having 1 to 6 C atoms,
- and, in case
- alternatively denotes
- and
- m and n are, independently of each other, 0 or 1.
19 more elements
Dependencies are inferred from the claim text.