Abstract:
The present invention is to provide an optical film having optically anisotropic layer having excellent durability, and a polarizing plate and an image display device using the same. An optical film of the present invention is an optical film having at least an optically anisotropic layer, in which the optically anisotropic layer is a layer obtained by polymerizing a polymerizable liquid crystal composition containing a predetermined liquid crystal compound and a polymerization initiator, and an extrapolated glass transition starting temperature of the optically anisotropic layer is 70° C. or higher.
Abstract:
An object of the present invention is to provide an optical film having an optically anisotropic layer having excellent durability, and a polarizing plate and an image display device using the same. This optical film of the present invention is an optical film at least having an optically anisotropic layer, in which the optically anisotropic layer is a layer obtained by polymerizing a polymerizable liquid crystal composition containing a predetermined liquid crystal compound, a predetermined mesogen compound, and a polymerization initiator, an I/O value of the liquid crystal compound is more than 0.56, and an I/O value of the mesogen compound is 0.56 or less.
Abstract:
An optically anisotropic layer is formed by a liquid crystal compound represented by General Formula 1, in which the long axes of the molecules are oriented. wherein L1 and L2 independently represent a linking group having a carbonyl group; F1 and F2 independently represent an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or a halogen atom; n and m independently represent an integer from 0 to 4; a and b independently represent an integer from 1 to 4; T1 and T2 independently represent a spacer portion including a straight chain or branched alkylene or alkylene oxide group having 2 to 20 carbon atoms; and Ar represents a divalent group having at least one aromatic ring selected from a group consisting of aromatic hydrocarbon rings and aromatic heterocycles, the number of Π electrons in the Ar group being 8 or greater.
Abstract:
Provided is a liquid crystal composition which is easily synthesized and highly suppress crystallization thereof. The liquid crystal composition includes at least one compound represented by formula (1), wherein Z1 represents —CO—, —O—CO— or single bond, and Z2 represents —CO— or —CO—CH═CH—, at least one compound represented by formula (2) not having (meth)acrylate group, wherein Z3 represents —CO— or —CH═CH—CO—, and Z4 represents —CO— or —CO—CH═CH—, and at least one compound represented by formula (3), wherein Z5 represents —CO—, —O—CO— or single bond, and Z6 represents —CO—, —CO—O— or single bond.
Abstract:
An optical film of the present invention includes an optically anisotropic layer containing a compound represented by the following general formula (1) or an optically anisotropic layer formed by the curing of a polymerizable composition containing a compound represented by the following general formula (1):
Abstract:
An optical film of the present invention includes a positive A-plate and a positive C-plate, in which the Re(450), Re(550), and Re(650) of the positive A-plate satisfy the relationship of Re(450)≦Re(550)≦Re(650), the positive A-plate is formed of a cured product of a composition including the liquid crystal compound A, and the positive C-plate is formed of a cured product of a composition including the liquid crystal compound C.
Abstract:
To provide an optically-compensatory film that can improve the contrast, to provide a polarizing plate and a liquid crystal display including the optically-compensatory film and a method of producing the optically-compensatory film. An optically-compensatory film including a transparent support; and at least one optically anisotropic layer including a liquid crystal composition containing liquid crystal compounds, in the transparent support; wherein when the optically-compensatory film is disposed between two polarizing plates in a cross nicol state, degree of depolarization as seen from the front face is 0.000022 or less, and degree of depolarization as seen from a polar angle of 50° from an absorption axis direction of one of the polarizing plates is 0.00077 or less.
Abstract:
An object of the present invention is to provide a liquid crystal composition capable of forming an optically anisotropic layer with suppressed alignment defects and an excellent alignment degree, an optically anisotropic layer, a laminate, and an image display device. The liquid crystal composition of the present invention includes a rod-like liquid crystal compound, and an interface improver having a repeating unit B1 represented by Formula (N-1) and a repeating unit B2 having a fluorine atom. In Formula (N-1), RB11 and RB12 each independently represent a hydrogen atom or a substituent, and RB13 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a halogen atom, or a cyano group. Here, in a case where RB11 and RB12 represent a substituent, RB11 and RB12 may be linked to each other to form a ring.
Abstract:
Provided is a light absorption anisotropic film capable of preparing an image display device having excellent display performance and excellent durability, and a laminate and an image display device formed of the light absorption anisotropic film. The light absorption anisotropic film is used for an image display device, which is formed of a liquid crystal composition containing a liquid crystal compound and a dichroic substance, in which in a signal derived from the dichroic substance detected by time-of-flight secondary ion mass spectrometry, a relationship between a maximum intensity Imax of the light absorption anisotropic film in a thickness direction and an intensity Isur1 in a surface of the light absorption anisotropic film on a viewing side of the image display device satisfies Expression (I-1) 2.0≤Imax/Isur1.
Abstract:
An object of the present invention is to provide a liquid crystal composition capable of forming an optically anisotropic layer with suppressed cissing during formation of an optically anisotropic layer and an excellent alignment degree, a fluorine-containing polymer, an optically anisotropic layer, a laminate, and an image display device. The liquid crystal composition of the present invention is a liquid crystal composition including a liquid crystal compound and an interface improver, in which the interface improver is a fluorine-containing polymer having a repeating unit B1 represented by Formula (B-1) and a repeating unit B2 having a fluorine atom.