Abstract: The present invention provides a phase difference film in which reflection of external light is suppressed, tinting of reflected light is suppressed, and tinting at the time of white display is suppressed in a case where the phase difference film is applied to a display device; a circularly polarizing plate; and an organic electroluminescent display device. The phase difference film of an embodiment of the present invention has an in-plane retardation of 100 to 200 nm at a wavelength of 550 nm and satisfies Requirement 1: ?xy<0.010 and Requirement 6: 0.10<Slope S?1.0.

Abstract: The present invention provides: a laminate which has a polarizer and an optically anisotropic layer and has excellent thermal durability; and an organic electroluminescent device and a liquid crystal display device, which include the laminate. The laminate according to the embodiment of the present invention is a laminate having two substrates, and a polarizing plate disposed between the two substrates, in which the polarizing plate has an optically anisotropic layer and a polarizer, the optically anisotropic layer is formed of a composition containing a polymerizable liquid crystal compound represented by Formula (I), the polarizer contains a polyvinyl alcohol-based resin, and a moisture permeability of the substrate is 10?3 g/m2·day or less.

Abstract: The present invention provides a laminate used in an image display device the laminate including an optically anisotropic layer, a light-absorbing anisotropic layer, a refractive index-adjusting layer, and an oxygen shielding layer in this order, where the light-absorbing anisotropic layer is formed of a composition containing dichroic azo coloring agent and liquid crystalline compounds, where the dichroic azo coloring agent compound is 10% to 30% by mass with respect to a mass of a total solid content of the light-absorbing anisotropic layer, a degree of alignment of the light-absorbing anisotropic layer is 0.92 or higher, the refractive index-adjusting layer is formed of a composition containing a crosslinkable group compound, and has an in-plane average refractive index of 1.55 to 1.70 (550 nm ?), and an angle formed by an in-plane slow axis of the optically anisotropic layer and an absorption axis of the light-absorbing anisotropic layer is 45°±10°.

Abstract: An object of the present invention is to provide is an optical laminate film exhibiting excellent reflection tint and an organic EL display device using this optical laminate film and exhibiting excellent reflection tint when turned off. The object is achieved by providing an optical laminate film including a polarizer, a phase difference layer, and a circularly polarized light separating layer in this order, in which an in-plane retardation Re(550) of the phase difference layer is 120 to 160 nm, the polarizer and the phase difference layer are arranged to form an angle of 45°±10°, the circularly polarized light separating layer is a cholesteric liquid crystal layer formed by fixing a cholesteric liquid crystalline phase and having a liquid crystalline molecule as a main component, and Re(550) is 0.5 to 3.

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 and a polymerization initiator, and the optically anisotropic layer has a density of 1.20 g/cm3 or more and a crosslinking point density of 0.0016 mol/cm3 or more.

Abstract: An organic EL image display device that includes a light emitting element substrate; and a circularly polarizing plate. The light emitting element substrate includes a reflecting layer and an organic electroluminescent layer group arranged in a matrix form on the reflecting layer. The reflecting layer, the organic electroluminescent layer group, and the circularly polarizing plate are arranged in this order. A polarization separation layer is provided between the organic electroluminescent layer group and the circularly polarizing plate, and includes polarization separation sites arranged in a matrix form corresponding to the organic electroluminescent layer group. The polarization separation site reflects light of one polarization state and transmits light of the other polarization state in light emitted from the corresponding organic electroluminescent layer. The polarization separation site is divided by a visible light transmission region.

Abstract: To suppress a phenomenon where an optical axis of the optically anisotropic layer is tilted when the optically anisotropic layer is produced by using a liquid crystalline compound showing smectic phase as a materials showing a higher level of orderliness. An optically anisotropic layer wherein a polymerizable composition, containing one or more polymerizable rod-like liquid crystal compound showing a smectic phase, is fixed in a state of smectic phase, and a direction of maximum refractive index of the optically anisotropic layer is inclined at 10° or smaller to the surface of the optically anisotropic layer, a method for manufacturing the same, a laminate and a method for manufacturing the same, a polarizing plate, a liquid crystal display device, and an organic EL display device.

Abstract: Provided is an optical element with which a high diffraction efficiency can be obtained with a simple configuration. The optical element includes: an optically-anisotropic layer that is formed using a composition including a liquid crystal compound, in which the optically-anisotropic layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction, and the optically-anisotropic layer has a region in which an alignment direction of a liquid crystal compound in at least one of upper and lower interfaces has a pre-tilt angle with respect to the interface.

Abstract: An object of the present invention is to provide: an optical element in which incident light can be transmitted or reflected at an angle in the predetermined direction and the wavelength dependence of the amount of transmitted light or reflected light is small; and an optical element including the optical element. The optical element according to the present invention comprises: an optically-anisotropic layer that is formed using a composition including a liquid crystal compound and an infrared absorbing colorant, in which the optically-anisotropic layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound changes while continuously rotating in at least one in-plane direction, and an absorption of the infrared absorbing colorant in a wavelength range of 700 to 2000 nm in a minor axis direction is higher than an absorption of the infrared absorbing colorant in a wavelength range of 700 to 2000 nm in a major axis direction.

Abstract: Provided is an optical element in which transmission of incident light with an angle in a predetermined direction is allowed and the brightness of transmitted light is high. The optical element is formed using a composition including a liquid crystal compound and has a liquid crystal alignment pattern in which a direction of an optical axis derived from the liquid crystal compound rotates in one direction; and the optically-anisotropic layer has regions in which the optical axis is twisted in a thickness direction of the optically-anisotropic layer and rotates, the regions having different magnitudes of twist angles of the rotation in a plane.

Abstract: Provided are an optical element that can make the brightness of light emitted from a light guide plate uniform, a light guide element, and an image display device. The optical element includes a patterned cholesteric liquid crystal layer that is obtained by immobilizing a cholesteric liquid crystalline phase, in which the patterned cholesteric liquid crystal layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction, and the patterned cholesteric liquid crystal layer has regions having different pitches of helical structures in a plane.

Abstract: The present invention provides an organic EL image display device including a light emitting element substrate, and a circularly polarizing plate, in which the light emitting element substrate includes a reflecting layer and an organic electroluminescent layer on the reflecting layer, the reflecting layer, the organic electroluminescent layer, and the circularly polarizing plate are arranged in this order, a polarization separation layer is provided between the organic electroluminescent layer and the circularly polarizing plate, the polarization separation layer includes a polarization separation region that reflects light of one polarization state in light emitted from the organic electroluminescent layer, and transmits light of another polarization state, and a visible light transmission region, the polarization separation region is formed of a layer formed by immobilizing a cholesteric liquid crystalline phase, and a positive C region-containing layer is provided between the organic electroluminescent lay

Abstract: Provided is an optical film having an excellent film contrast and improved moisture-heat resistance, a polarizing plate, and an image display device. The optical film has an optically anisotropic film obtained by polymerizing a polymerizable liquid crystal composition, and a photo-alignment film, in which the polymerizable liquid crystal composition contains a polymerizable liquid crystal compound represented by Formula (1): L1-SP1-E1-Cy2-Cy1-D1-Ar1-D2-Cy3-Cy4-E2-SP2-L2 and the optically anisotropic film satisfies Formula (I): Re(450)/Re(550)<1 or Formula (II): Rth(450)/Rth(550)<1 and exhibits a diffraction peak derived from a periodic structure in X-ray diffraction measurement.

Abstract: An object of the present invention is to provide an optically anisotropic film which has excellent moisture-heat resistance and can have a reduction in the thickness, an optical film, a polarizing plate, and an image display device. The optically anisotropic film of the embodiment of the present invention is an optically anisotropic film obtained by polymerizing a polymerizable liquid crystal composition, in which the polymerizable liquid crystal composition contains a polymerizable liquid crystal compound represented by Formula (1) and a polymerizable liquid crystal compound represented by Formula (2), and the optically anisotropic film satisfies Formula (3) or (4), and has a degree of alignment as measured by Raman spectroscopy of 0.4 or more.

Abstract: An object of the present invention is to provide is an optical laminate film exhibiting excellent uniformity in reflection tint and an organic EL display device using this optical laminate film and exhibiting excellent uniformity in reflection tint when turned off.

Abstract: An object of the present invention is to provide is an optical laminate film exhibiting excellent reflection tint and an organic EL display device using this optical laminate film and exhibiting excellent reflection tint when turned off. The object is achieved by providing an optical laminate film including a polarizer, a phase difference layer, and a circularly polarized light separating layer in this order, in which an in-plane retardation Re(550) of the phase difference layer is 120 to 160 nm, the polarizer and the phase difference layer are arranged to form an angle of 45°±10°, the circularly polarized light separating layer is a cholesteric liquid crystal layer formed by fixing a cholesteric liquid crystalline phase and having a liquid crystalline molecule as a main component, and Re(550) is 0.5 to 3.

Abstract: An object of the present invention is to provide an optical film having excellent alignment, and a polarizing plate and an image display device using the same. The optical film of the present invention is an optical film having at least an optically anisotropic layer, and the optically anisotropic layer contains a smectic liquid crystal compound not including a fluorine atom and a compound partially having a cyclohexane ring in which the hydrogen atom is substituted with a linear alkyl group.

Abstract: According to the invention, provided are an optical alignment film composition with which an optical alignment film having excellent aligning properties can be produced, and an optical alignment film, an optical laminate, and an image display device produced using the optical alignment film composition. An optical alignment film composition according to the invention contains a polymer A which has a constitutional unit a1 including a cinnamate group and a low-molecular-weight compound B which has a cinnamate group and has a lower molecular weight than the polymer A.

Abstract: To suppress a phenomenon where an optical axis of the optically anisotropic layer is tilted when the optically anisotropic layer is produced by using a liquid crystalline compound showing smectic phase as a materials showing a higher level of orderliness. An optically anisotropic layer wherein a polymerizable composition, containing one or more polymerizable rod-like liquid crystal compound showing a smectic phase, is fixed in a state of smectic phase, and a direction of maximum refractive index of the optically anisotropic layer is inclined at 10° or smaller to the surface of the optically anisotropic layer, a method for manufacturing the same, a laminate and a method for manufacturing the same, a polarizing plate, a liquid crystal display device, and an organic EL display device.

Abstract: Provided is a depolarizing film including a depolarizing layer composed of a first region and a second region having differing optical characteristics, wherein in the depolarizing layer, the ratio between the area of the first region and the area of the second region is 0.45:0.55 to 0.55:0.45, the first region is an optically anisotropic region causing 90° optical rotation of light that is incident on one surface of the depolarizing layer before the light is emitted from the other surface, and the second region is an optically isotropic region having optical isotropy.