Abstract: A circularly polarizing plate in which tint unevenness in an oblique direction can be suppressed when the circularly polarizing plate is applied to an organic EL display device. The circularly polarizing plate includes a polarizer and a phase difference film laminated on one surface side of the polarizer, in which it has a moisture content of 1.8% or less, an absolute value of a chromaticity a* and chromaticity b* are 10 or less at any azimuthal angle, in a case where the chromaticity a* and b* are measured at all azimuthal angles with a polar angle of 40° from a normal direction of the circularly polarizing plate of a laminate when a reflectivity is measured at all azimuthal angles with a polar angle of 40° from the normal direction of the circularly polarizing plate of the laminate, the reflectivity is 3.0% or less at any azimuthal angle.

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: Provided are a long phase difference film capable of suppressing occurrence of reddish unevenness over time, and a high-quality long laminate and a high-quality image display device, each using the same. The long phase difference film includes a long support and a long optically anisotropic layer arranged on one surface side of the long support, in which the long support has a thickness of 10 ?m to 50 ?m, a width-direction elastic modulus of 4.3 GPa to 6.0 GPa, and a width-direction coefficient of linear thermal expansion of 20×10?6/° C. to 40×10?6/° C., the optically anisotropic layer is formed of a polymerizable liquid crystal composition including a polymerizable liquid crystal compound having reciprocal wavelength dispersion, and an in-plane phase difference change ?Re at the time of treating a section of the long phase difference film under a heating condition of 85° C. and 500 hours is 0.94 to 1.02.

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: 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: A film of 15 to 45 ?m thick containing a cellulose acylate and an aromatic ester oligomer having a repeating unit derived from a dicarboxylic acid and a repeating unit derived from a diol, in which the repeating unit derived from a dicarboxylic acid has a ratio m/n of from 0/10 to 3/7, m and n represent a molar proportion of a repeating unit derived from an aliphatic dicarboxylic acid and an aromatic dicarboxylic acid, respectively, and the film satisfies |Rth(590)|?50 nm; has a good appearance and is free of deterioration in display performance when the film with a thin thickness is produced in the form of a roll, achieves a high pencil hardness by imparting a high Knoop hardness to the film, even with a hard coat layer provided, and is free of display unevenness on installing the film in a liquid crystal display device.

Abstract: An optical film has an alignment layer and a retardation layer which is disposed on the alignment layer and formed using a polymerizable liquid crystal composition including a predetermined liquid crystal compound, in which at least one of an acid having the pKa of ?10.0 or less or a salt of the acid is included in at least one of the alignment layer or the retardation layer.

Abstract: The polarizing plate of the present invention includes a polarizer and an optical element that rotates a polarization plane of polarized light emitted from the polarizer, an orientation direction on a surface of the optical element on a polarizer side is parallel to an absorption axis of the polarizer, an orientation direction on a surface of the optical element opposite to the polarizer is perpendicular to the absorption axis of the polarizer, and ?nd and a birefringence parameter RH of the optical element fall in a range of a predetermined region in an orthogonal coordinate in which ?nd is indicated along a vertical axis and the birefringence parameter RH is indicated along a lateral axis.

Abstract: The present invention is to provide a polarizing plate exhibiting sufficient adhesiveness between a resin layer and a pressure sensitive adhesive layer and excellent peeling property in reworking process, and an image display device provided with the polarizing plate. The polarizing plate of the present invention includes a polarizer, and the resin layer that is in direct contact with the polarizer, in which the thickness of the polarizer is 20 ?m or less, a hydrogen bonding component of a surface free energy of the resin layer is 3.5 mN/m or more, and the thickness of the polarizing plate is 70 ?m or less.

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: The polarizing plate of the present invention includes a polarizer and an optical element that rotates a polarization plane of polarized light emitted from the polarizer, an orientation direction on a surface of the optical element on a polarizer side is parallel to an absorption axis of the polarizer, an orientation direction on a surface of the optical element opposite to the polarizer is perpendicular to the absorption axis of the polarizer, and ?nd and a birefringence parameter RH of the optical element fall in a range of a predetermined region in an orthogonal coordinate in which ?nd is indicated along a vertical axis and the birefringence parameter RH is indicated along a lateral axis.

Abstract: The present invention is to provide a polarizing plate exhibiting sufficient adhesiveness between a resin layer and a pressure sensitive adhesive layer and excellent peeling property in reworking process, and an image display device provided with the polarizing plate. The polarizing plate of the present invention includes a polarizer, and the resin layer that is in direct contact with the polarizer, in which the thickness of the polarizer is 20 ?m or less, a hydrogen bonding component of a surface free energy of the resin layer is 3.5 mN/m or more, and the thickness of the polarizing plate is 70 ?m or less.

Abstract: There is provided a polarizing plate including a transparent support, a polarizer, and a low-moisture permeable layer in this order, wherein a thickness of the polarizer is 15 ?m or less, a film thickness of the low-moisture permeable layer is greater than 5 ?m and equal to 30 ?m or less, the low-moisture permeable layer is formed from a composition containing at least one of a compound having a cyclic aliphatic hydrocarbon group and two or more ethylenically unsaturated double bond groups in its molecule, and a compound having a fluorene ring and two or more ethylenically unsaturated double bond group in its molecule, and a polymerization initiator, and the polarizer and the low-moisture permeable layer are laminated directly or through an adhesive layer.

Abstract: A film of 15 to 45 ?m thick containing a cellulose acylate and an aromatic ester oligomer having a repeating unit derived from a dicarboxylic acid and a repeating unit derived from a diol, in which the repeating unit derived from a dicarboxylic acid has a ratio m/n of from 0/10 to 3/7, m and n represent a molar proportion of a repeating unit derived from an aliphatic dicarboxylic acid and an aromatic dicarboxylic acid, respectively, and the film satisfies |Rth(590)|?50 nm; has a good appearance and is free of deterioration in display performance when the film with a thin thickness is produced in the form of a roll, achieves a high pencil hardness by imparting a high Knoop hardness to the film, even with a hard coat layer provided, and is free of display unevenness on installing the film in a liquid crystal display device.

Abstract: The optical laminate includes a surface protection film; a transparent support; an optically anisotropic layer; an adhesive layer; and a release film in this order, and the optically anisotropic layer is a patterned optically anisotropic layer which includes a first phase difference region and a second phase difference region differing from each other in terms of the direction of an in-plane slow axis and in which the first and second phase difference regions are alternately disposed within a plane of the optically anisotropic layer, the transparent support contains a polymer material and has a thickness of 10 ?m to 59 ?m, and a ? moisture content falls within a predetermined range. The optical laminate can be stuck on a display apparatus with high accuracy and can improve a vertical viewing angle of the display apparatus after being stuck on the display apparatus.

Abstract: There is provided an optical film which is a cellulose acylate film including a cellulose acylate and a sugar ester compound having at least one aromatic group, the film having a film thickness of 15 ?m to 35 ?m, in which a number density of the aromatic group of the sugar ester compound is 0.90×10?3 mol or more and 5.00×10?3 mol or less per 1 g of a solid component in the cellulose acylate film.

Abstract: An optical film, has a film thickness of 15 ?m to 45 ?m, Rth (440 W, 30% RH) and “Rth (440 W, 30% RH)?Rth (440 W, 80% RH)” of the optical film satisfy Expression (1) ?20 nm?Rth (440 W, 30% RH)?5 nm and Expression (2) 0 nm?Rth (440 W, 30% RH)?RH (440 W, 80% RH)?18 nm, here, in Expressions (1) and (2), Rth (440 W, 30% RH) represents a retardation value in a film thickness direction at a wavelength of 440 nm measured at 25° C. and at a relative humidity of 30% and Rth (440 W, 80% RH) represents a retardation value in the film thickness direction at a wavelength of 440 nm measured at 25° C. and at a relative humidity of 80%; a polarizer and liquid crystal display device.

Abstract: There is provided a cellulose acylate film comprising a plasticizer and two or more kinds of ultraviolet absorbents specific in structure and has a moisture permeability of 1,000 to 1,700 g/m2·day at a temperature of 25° C. and relative humidity of 60%, and a polarizing plate containing at least one cellulose acylate film and a liquid crystal display device containing at least one polarizing plate.

Abstract: A cellulose acylate film containing a cellulose acylate and a sugar ester compound having from 1 to 12 pyranose structures or furanose structures in which at least one hydroxyl group is esterified, the film satisfying 40 nm?Re(550)?60 nm and 100 nm?Rth(550)?140 nm, and having a dimensional change of ?0.5 to 0.5% and an internal haze of at most 0.1%.

Abstract: Disclosed is an optical film having a cellulose ester and a polyester containing an alicyclic structure and having a hydroxyl terminal group, a hydrogen atom of which is substituted by an acyl group derived from a monocarboxylic acid, and having a thickness of from 10 to 45 ?m, an in-plane retardation of from ?5 to 5 nm, a retardation in thickness direction of from ?5 to 5 nm, and an elastic modulus of 4.2 GPa or more. The optical film has a reduced thickness, achieves both a high rigidity and optical characteristics including a low retardation, and enhances the polarizer durability used in a polarizing plate.