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US 9,005,721 B2Granted
Liquid-crystal display
AssigneeMerck Patent GmbH
InventorsAchim Goetz, Melanie Klasen-Memmer, Stephan Derow, Sabine Schoen, Peter Best
Life of this patent
Estimating the term…
Abstract
Disclosed are liquid-crystal (LC) media for use in LC displays of the PS (polymer stabilized) or PSA (polymer sustained alignment) type which contain a liquid-crystal (LC) mixture that contains one or more compounds of formula I
Claims45
A polymer stabilized (PS) liquid-crystal or polymer sustained alignment (PSA) liquid crystal display, said display comprising a liquid-crystal mixture consisting essentially of:
- (a) one or more compounds of formula I
- in which
- R1 and R2 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups are each optionally replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another,
- A1, A2, A3, A4 each, independently of one another, denote
- one, two or three of the radicals A1, A2, A3 and A4 may also denote
- L1 and L2 each, independently of one another, denote H, F, Cl, OCF3, CF3, CH2F, or CHF2,
- Z1 and Z2 each denote a single bond,
- Z3 denotes —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —SCH2—, —CH2S—, —CH2CH2—, —C2F4—, —CH2—CF2—, —CF2CH2—, —(CH2)z—, —CH═CH—, —CF═CF—, —CH═CF—, —CF═CH—, —C≡C—, —CH═CHCH2O—, or a single bond,
- z denotes 3, 4, 5 or 6, and
- m denotes 1;
- (b) one or more additional compounds selected from formulas CY and PY:
- in which
- a denotes 1 or 2,
- b denotes 0 or 1,
- denotes
- R1 and R2 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another,
- Zx and Zy each, independently of one another, denote —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCH2O—, or a single bond, and
- L1-4 each, independently of one another, denote F, Cl, OCF3, CF3, CH3, CH2F, or CHF2;
- (c) one or more compounds selected from formulas ZK and DK:
- in which
- denotes
- denotes
- denotes
- R3, R4, R5, and R6 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, and
- Zy denotes —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCH2O— or a single bond;
- and
- (d) one or more compounds of formula T:
- in which
- R5 and R6 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, and
- each, independently of one another, denote
- L5 denotes F or Cl, and
- L6 denotes F, Cl, OCF3, CF3, CH3, CH2F or CHF2.
29 more elements
A liquid-crystal medium comprising:
- a polymerizable component A) comprising one or more polymerizable compounds, or a polymer obtainable by polymerization of a polymerizable component A) comprising one or more polymerizable compounds, and
- a liquid-crystalline component B) comprising a liquid-crystal (LC) mixture consisting essentially of:
- (a) one or more compounds of formula I
- in which
- R1 and R2 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another,
- A1, A2, A3, A4 each, independently of one another, denote
- one, two or three of the radicals A1, A2, A3 and A4 also denote
- L1 and L2 each, independently of one another, denote H, F, Cl, OCF3, CF3, CH2F, or CHF2,
- Z1, Z2, Z3 each, independently of one another, denote —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —SCH2—, —CH2S—, —CH2CH2—, —C2F4—, —CH2—CF2—, —CF2CH2—, —(CH2)z—, —CH═CH—, —CF═CF—, —CH═CF—, —CF═CH—, —C≡C—, —CH═CHCH2O—, or a single bond, where, in the case where m=0, Z1 and Z2 do not simultaneously denote a single bond,
- z denotes 3, 4, 5 or 6, and
- m denotes 0 or 1;
- (b) one or more additional compounds selected from formulas CY and PY:
- in which
- a denotes 1 or 2,
- b denotes 0 or 1,
- denotes
- R1 and R2 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another,
- Zx and Zy each, independently of one another, denote —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCH2O—, or a single bond, and
- L1-4 each, independently of one another, denote F, Cl, OCF3, CF3, CH3, CH2F, or CHF2;
- (c) one or more compounds selected from formulas ZK and DK:
- in which
- denotes
- denotes
- denotes
- R3, R4, R5, and R6 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, and
- Zy denotes —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCH2O— or a single bond;
- and
- (d) one or more compounds of formula T:
- in which
- R5 and R6 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, and
- each, independently of one another, denote
- L5 denotes F or Cl, and
- L6 denotes F, Cl, OCF3, CF3, CH3, CH2F or CHF2;
- wherein said medium does not contain chiral compounds.
31 more elements
A liquid-crystal display containing an LC cell containing two substrates, where at least one substrate is transparent to light and at least one substrate has an electrode layer, and a layer, located between the substrates, of a liquid-crystal medium comprising a polymerized component and a low-molecular-weight component, where the polymerized component is obtainable by polymerization of one or more polymerizable compounds in the liquid-crystal medium between the substrates of the liquid-crystal cell with application of an electrical voltage, and where the low-molecular-weight component is a liquid-crystal mixture consisting essentially of:
- (a) one or more compounds of formula I
- in which
- R1 and R2 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another,
- A1, A2, A3, A4 each, independently of one another, denote
- one, two or three of the radicals A1, A2, A3 and A4 may also denote
- L1 and L2 each, independently of one another, denote H, F, Cl, OCF3, CF3, CH2F, or CHF2,
- Z1, Z2, Z3 each, independently of one another, denote —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —SCH2—, —CH2S—, —CH2CH2—, —C2F4—, —CH2—CF2—, —CF2CH2—, —(CH2)z—, —CH═CH—, —CF═CF—, —CH═CF—, —CF═CH—, —C≡C—, —CH═CHCH2O—, or a single bond, where, in the case where m=0, Z1 and Z2 do not simultaneously denote a single bond,
- z denotes 3, 4, 5 or 6, and
- m denotes 0 or 1;
- (b) one or more additional compounds selected from formulas CY and PY:
- in which
- a denotes 1 or 2,
- b denotes 0 or 1,
- denotes
- R1 and R2 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another,
- Zx and Zy each, independently of one another, denote —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCH2O—, or a single bond, and
- L1-4 each, independently of one another, denote F, Cl, OCF3, CF3, CH3, CH2F, or CHF2;
- (c) one or more compounds selected from formulas ZK and DK:
- in which
- denotes
- denotes
- denotes
- R3, R4, R5, and R6 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, and
- Zy denotes —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCH2O— or a single bond;
- and
- (d) one or more compounds of formula T:
- in which
- R5 and R6 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, and
- each, independently of one another, denote
- L5 denotes F or Cl, and
- L6 denotes F, Cl, OCF3, CF3, CH3, CH2F or CHF2.
28 more elements
A polymer stabilized (PS) liquid-crystal or polymer sustained alignment (PSA) liquid crystal display, said display comprising a liquid-crystal mixture comprising:
- (a) one or more compounds of formula I
- in which
- R1 and R2 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups are each optionally replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another,
- A1, A2, A3, A4 each, independently of one another, denote
- one, two or three of the radicals A1, A2, A3 and A4 may also denote
- L1 and L2 each, independently of one another, denote H, F, Cl, OCF3, CF3, CH2F, or CHF2,
- Z1 and Z2 each denote a single bond,
- Z3 denotes —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —SCH2—, —CH2S—, —CH2CH2—, —C2F4—, —CH2—CF2—, —CF2CH2—, —(CH2)z—, —CH═CH—, —CF═CF—, —CH═CF—, —CF═CH—, —C≡C—, —CH═CHCH2O—, or a single bond,
- z denotes 3, 4, 5 or 6, and
- m denotes 1;
- (b) one or more additional compounds selected from formulas CY and PY:
- in which
- a denotes 1 or 2,
- b denotes 0 or 1,
- denotes
- R1 and R2 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another,
- Zx and Zy each, independently of one another, denote —CH2CH2—, —CH═CH—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —CF═CF—, —CH═CHCH2O—, or a single bond, and
- L1-4 each, independently of one another, denote F, Cl, OCF3, CF3, CH3, CH2F, or CHF2;
- (c) one or more compounds selected from formulas ZK and DK:
- in which
- denotes
- denotes
- denotes
- R3, R4, R5, and R6 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, and
- Zy denotes —CH2CH2—, —CH═CH—, —CF2O—, —OCF2—, —CH2O—, —OCH2—, —COO—, —OCO—, —C2F4—, —CF═CF—, —CH═CHCH2O— or a single bond;
- and
- (d) one or more compounds of formula T:
- in which
- R5 and R6 each, independently of one another, denote alkyl having 1 to 12 C atoms, in which one or two non-adjacent CH2 groups may be replaced by —O—, —CH═CH—, —CO—, —OCO— or —COO— in such a way that O atoms are not linked directly to one another, and
- each, independently of one another, denote
- L5 denotes F or Cl, and
- L6 denotes F, Cl, OCF3, CF3, CH3, CH2F or CHF2.
29 more elements
Dependencies are inferred from the claim text.