摘要:
A liquid crystal composition comprising a dichroic dye, a host liquid crystal and at least one kind of solid matter having an average particle diameter of 1 nm to 10 m, the dichroic dye having a substituent represented by the following formula (1): -(Het)j-{(B1)p-(Q1)q-(B2)r}n—C1 Formula (1) wherein Het is an oxygen atom or a sulfur atom; B1 and B2 each independently represent an arylene group, a heteroarylene group, or a divalent cyclic aliphatic hydrocarbon group; Q1 represents a divalent linking group; C1 represents an alkyl group, a cycloalkyl group, an alkoxy group, an alkoxycarbonyl group, an acyl group, or an acyloxy group; j represents 0 or 1; p, q, and r represent an integer of 0 to 5, respectively; n represents an integer of 1 to 3; the sum of the groups represented by B1 and B2 is an integer of 3 to 10; when p, q and r are respectively 2 or greater, two or more of B1, Q1 or B2 may be the same or different; when n is 2 or greater, two or more of {(B1)p-(Q1)q-(B2)r} may be the same or different.
摘要:
The present invention provides a dual frequency addressable smectic A liquid crystal composition having a crossover frequency, wherein the smectic A phase is induced by mixing of at least a first nematic liquid crystal compound or composition and a second nematic liquid crystal compound or composition.
摘要:
The invention provides a liquid crystal display element and a light-modulating material each containing at least one low molecular weight gelling agent, at least one dichroic dye having a substituent represented by formula (1) and at least one host liquid crystal between a pair of electrodes at least one of which is a transparent electrode. Representations in formula (1) are: Het, O or S; B1 and B2, divalent arylene, heteroarylene or alicyclic hydrocarbon group; Q1, divalent linking group; C1, alkyl, cycloalkyl, alkoxy, alkoxycarbonyl, acyl or acyloxy group; j, 0 or 1; p, q and r, an integer 0 to 5; n, an integer 1 to 3; and (p+r)×n is an integer 3 to 10. -(Het)j-[(B1)p-(Q1)q-(B2)r]n-C1 Formula (1)
摘要:
The present invention provides a liquid crystal composition including a siloxane polymer, a nematic liquid crystal compound substituted with at least one fluorine atom, and at least one dichroic dye; and a liquid crystal composition including a siloxane polymer having liquid crystalline group at the side chain of the polymer, a low molecular-weight liquid crystal compound, and a dichroic dye, in which the dielectric constant anisotropy of the liquid crystal composition is changed from being positive to being negative when the frequency of the voltage to be applied is increased.
摘要:
The present invention provides one or more dichroic dyes which exhibit high solubility in liquid crystal and a high order parameter. The dichroic dyes each have a first substituent having at least one cis-cyclohexane ring and/or a second substituent having at least one trans-cyclohexane ring. The dichroic dye(s) may be provided as a mixture including at least a first dichroic dye having at least the first substituent and a second dichroic dye having at least the second substituent. The dichroic dye(s) may also be provided as a plurality of dichroic dyes, each of the molecules of which has at least the first substituent and the second substituent. The present invention also provides a liquid crystal composition and a liquid crystal element including the one or more dichroic dyes.
摘要:
A liquid crystal composition comprising a dichroic dye, a host liquid crystal and at least one kind of solid matter having an average particle diameter of 1 nm to 10 m, the dichroic dye having a substituent represented by the following formula (1): -(Het)j-{(B1)p-(Q1)q-(B2)r}n—C1: Formula (1) wherein Het is an oxygen atom or a sulfur atom; B1 and B2 each independently represent an arylene group, a heteroarylene group, or a divalent cyclic aliphatic hydrocarbon group; Q1 represents a divalent linking group; C1 represents an alkyl group, a cycloalkyl group, an alkoxy group, an alkoxycarbonyl group, an acyl group, or an acyloxy group; j represents 0 or 1; p, q, and r represent an integer of 0 to 5, respectively; n represents an integer of 1 to 3; the sum of the groups represented by B1 and B2 is an integer of 3 to 10; when p, q and r are respectively 2 or greater, two or more of B1, Q1 or B2 may be the same or different; when n is 2 or greater, two or more of {(B1)p-(Q1)q-(B2)r} may be the same or different.
摘要:
The present invention provides a dual frequency addressable smectic A liquid crystal composition having a crossover frequency, wherein the smectic A phase is induced by mixing of at least a first nematic liquid crystal compound or composition and a second nematic liquid crystal compound or composition.
摘要:
The invention provides a liquid crystal display element and a light-modulating material each containing at least one low molecular weight gelling agent, at least one dichroic dye having a substituent represented by formula (1) and at least one host liquid crystal between a pair of electrodes at least one of which is a transparent electrode. Representations in formula (1) are: Het, O or S; B1 and B2, divalent arylene, heteroarylene or alicyclic hydrocarbon group; Q1, divalent linking group; C1, alkyl, cycloalkyl, alkoxy, alkoxycarbonyl, acyl or acyloxy group; j, 0 or 1; p, q and r, an integer 0 to 5; n, an integer 1 to 3; and (p+r)×n is an integer 3 to 10. -(Het)j-[(B1)p-(Q1)q-(B2)r]n-C1 Formula (1)
摘要:
The present invention provides a liquid crystal composition obtained by dissolving a dichroic dye in a mixture of a cross-linked polymer having a liquid crystalline group in the side chains and a low molecular weight liquid crystal, and preferably the cross-linked polymer is a cross-linked siloxane polymer having a liquid crystalline group in the side chains, and the dielectric constant anisotropy of the liquid crystal composition is changed from positive to negative by increasing the frequency of the voltage to be applied. The present invention further provides a liquid crystal element containing the liquid crystal composition and a cross-linked siloxane polymer preferably usable for the liquid crystal composition.
摘要:
The present invention provides one or more dichroic dyes which exhibit high solubility in liquid crystal and a high order parameter. The dichroic dyes each have a first substituent having at least one cis-cyclohexane ring and/or a second substituent having at least one trans-cyclohexane ring. The dichroic dye(s) may be provided as a mixture including at least a first dichroic dye having at least the first substituent and a second dichroic dye having at least the second substituent. The dichroic dye(s) may also be provided as a plurality of dichroic dyes, each of the molecules of which has at least the first substituent and the second substituent. The present invention also provides a liquid crystal composition and a liquid crystal element including the one or more dichroic dyes.