US 2014/0111752 A1 · LIQUID CRYSTAL DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME

Abstract

There is provided a liquid crystal display device including a liquid crystal display element including a first alignment film and a second alignment film provided on opposing surfaces of a pair of substrates, and a liquid crystal layer arranged between the first alignment film and the second alignment film and including crystal molecules having negative dielectric constant anisotropy. At least the first alignment film includes a compound in which a polymer compound having a first side chain and a second side chain is crosslinked or polymerized. The first side chain has a crosslinkable functional group or a polymerizable functional group. The second side chain has a structure inducing dielectric anisotropy. The liquid crystal molecules are pretilted by the first alignment film.

Claims19

Dependent claims

A liquid crystal display device comprising

a liquid crystal display element including
a first alignment film and a second alignment film provided on opposing surfaces of a pair of substrates, and
a liquid crystal layer arranged between the first alignment film and the second alignment film and including crystal molecules having negative dielectric constant anisotropy,
wherein at least the first alignment film includes a compound in which a polymer compound having a first side chain and a second side chain is crosslinked or polymerized,
wherein the first side chain has a crosslinkable functional group or a polymerizable functional group,
wherein the second side chain has a structure inducing dielectric anisotropy, and
wherein the liquid crystal molecules are pretilted by the first alignment film.

4 more elements

A liquid crystal display device comprising

a liquid crystal display element including
a first alignment film and a second alignment film provided on opposing surfaces of a pair of substrates, and
a liquid crystal layer arranged between the first alignment film and the second alignment film and including crystal molecules having negative dielectric constant anisotropy,
wherein at least the first alignment film includes a compound in which a polymer compound having a side chain is crosslinked or polymerized,
wherein the side chain has a crosslinkable functional group or a polymerizable functional group, and has the following Structural Formula (13), (14), (15) or (16), and
wherein the liquid crystal molecules are pretilted by the first alignment film:
where a ring R is represented by one of the following formulae:
a ring X is represented by one of the following formulae:
Z1 represents one of a single bond, —O—, —CH2O—, —OCH2—, —COO— and —COO—,
each of A1 and A2 independently represents a hydrogen atom or an unsubstituted alkyl group having 0 to 15 carbon atoms, and in the alkyl group, any non-adjacent —(CH2)— may be substituted by —O—, —S— or —CO—, and any —(CH2)— may be substituted by —CH═CH— or —C≡C—,
X1 represents one of a halogen atom, —CN, —OCF3, —CF3, —CHF2, —CH2F, —OCF2CHF2 or —OCF2CHFCF3,
each of X2, X3 and X4 independently represents a hydrogen atom, a halogen atom, —CN, —OCF3, —CF3, —CHF2, —CH2F, —OCF2CHF2 or —OCF2CHFCF3,
each of k, l, m, and n independently represents 0 or 1,
Y represents a crosslinkable functional group or a polymerizable functional group,
R11 represents a linear or branched divalent organic group including an ether group or an ester group having one or more carbon atoms, or at least one kind of bond group selected from the group consisting of ether, ester, ether ester, acetal, ketal, hemiacetal and hemiketal,
R12 represents a divalent organic group including a plurality of ring structures, and
R13 represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a monovalent group having a carbonate group, or a derivative thereof.

14 more elements

A method of manufacturing a liquid crystal display device comprising:

forming, on one of a pair of substrates, a first alignment film including a polymer compound having a first side chain having a crosslinkable functional group or a polymerizable functional group and a second side chain, and forming a second alignment film on the other of the pair of substrates,
arranging the pair of substrates so that the first alignment film and the second alignment film oppose each other, and sealing a liquid crystal layer including liquid crystal molecules having negative dielectric constant anisotropy between the first alignment film and the second alignment film, and then
crosslinking or polymerizing the first side chain in the polymer compound to pretilt the liquid crystal molecules,
wherein the second side chain has a structure inducing dielectric anisotropy,
wherein the second side chain has a dipole moment in a direction perpendicular to a long axis of the second side chain and has a structure inducing spontaneous polarization,
wherein the second side chain has a dielectrically negative component, or wherein the second side chain has the following Structural Formula (11) or (12):
where a ring R is represented by one of the following formulae:
a ring X is represented by one of the following formulae:
Z1 represents one of a single bond, —O—, —CH2O—, —OCH2—, —COO— and —COO—,
each of A1 and A2 independently represents a hydrogen atom or an unsubstituted alkyl group having 0 to 15 carbon atoms, and in the alkyl group, any non-adjacent —(CH2)— may be substituted by —O—, —S— or —CO—, and any —(CH2)— may be substituted by —CH═CH— or
X1 represents one of a halogen atom, —CN, —OCF3, —CF3, —CHF2, —CH2F, —OCF2CHF2 or —OCF2CHFCF3,
each of X2, X3 and X4 independently represents a hydrogen atom, a halogen atom, —CN, —OCF3, —CF3, —CHF2, —CH2F, —OCF2CHF2 or —OCF2CHFCF3, and
each of k, l, m, and n independently represents 0 or 1.

10 more elements

A method of manufacturing a liquid crystal display device comprising:

forming, on one of a pair of substrates, a first alignment film including a polymer compound having a side chain and forming a second alignment film on the other of the pair of substrates,
arranging the pair of substrates so that the first alignment film and the second alignment film oppose each other, and sealing a liquid crystal layer including liquid crystal molecules having negative dielectric constant anisotropy between the first alignment film and the second alignment film, and then
crosslinking or polymerizing the side chain in the polymer compound to pretilt the liquid crystal molecules,
wherein the side chain has a crosslinkable functional group or a polymerizable functional group, and
a structure inducing dielectric anisotropy,
a dipole moment in a direction perpendicular to a long axis of the side chain and has a structure inducing spontaneous polarization,
a dielectrically negative component, or
the following Structural Formula (13), (14), (15) or (16):
where a ring R is represented by one of the following formulae:
a ring X is represented by one of the following formulae:
Z1 represents one of a single bond, —O—, —CH2O—, —OCH2—, —COO— and —COO—,
each of A1 and A2 independently represents a hydrogen atom or an unsubstituted alkyl group having 0 to 15 carbon atoms, and in the alkyl group, any non-adjacent —(CH2)— may be substituted by —O—, —S— or —CO—, and any —(CH2)— may be substituted by —CH═CH— or
X1 represents one of a halogen atom, —CN, —OCF3, —CF3, —CHF2, —CH2F, —OCF2CHF2 or —OCF2CHFCF3,
each of X2, X3 and X4 independently represents a hydrogen atom, a halogen atom, —CN, —OCF3, —CF3, —CHF2, —CH2F, —OCF2CHF2 or —OCF2CHFCF3,
each of k, l, m, and n independently represents 0 or 1,
Y represents a crosslinkable functional group or a polymerizable functional group,
R11 represents a linear or branched divalent organic group including an ether group or an ester group having one or more carbon atoms, or at least one kind of bond group selected from the group consisting of ether, ester, ether ester, acetal, ketal, hemiacetal and hemiketal,
R12 represents a divalent organic group including a plurality of ring structures, and
R13 represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a monovalent group having a carbonate group, or a derivative thereof.

16 more elements

A method of manufacturing a liquid crystal display device comprising:

forming, on one of a pair of substrates, a first alignment film including a polymer compound having a first side chain having a crosslinkable functional group or a photosensitive functional group and a second side chain, and forming a second alignment film on the other of the pair of substrates,
arranging the pair of substrates so that the first alignment film and the second alignment film oppose each other, and sealing a liquid crystal layer including liquid crystal molecules having negative dielectric constant anisotropy between the first alignment film and the second alignment film, and then
radiating the polymer compound with an energy ray to pretilt the liquid crystal molecules,
wherein the second side chain has a structure inducing dielectric anisotropy,
wherein the second side chain has a dipole moment in a direction perpendicular to a long axis of the second side chain and has a structure inducing spontaneous polarization,
wherein the second side chain has a dielectrically negative component, or
wherein the second side chain has the following Structural Formula (11) or (12):
where a ring R is represented by one of the following formulae:
a ring X is represented by one of the following formulae:
Z1 represents one of a single bond, —O—, —CH2O—, —OCH2—, —COO— and —COO—,
each of A1 and A2 independently represents a hydrogen atom or an unsubstituted alkyl group having 0 to 15 carbon atoms, and in the alkyl group, any non-adjacent —(CH2)— may be substituted by —O—, —S— or —CO—, and any —(CH2)— may be substituted by —CH═CH— or —C≡C—,
X1 represents one of a halogen atom, —CN, —OCF3, —CF3, —CHF2, —CH2F, —OCF2CHF2 or —OCF2CHFCF3,
each of X2, X3 and X4 independently represents a hydrogen atom, a halogen atom, —CN, —OCF3, —CF3, —CHF2, —CH2F, —OCF2CHF2 or —OCF2CHFCF3, and
each of k, l, m, and n independently represents 0 or 1.

11 more elements

Dependencies are inferred from the claim text.

Liquid crystal display device and method of manufacturing the same

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Liquid crystal display device and method of manufacturing the same

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Abstract

Claims19