Abstract:
An optically anisotropic layer; a liquid crystal cell; a liquid crystal display device; a sensor; a lens; a switching element; an isolator; and a camera include a composition, the composition which can form a liquid crystal layer having a maximal absorption wavelength in an infrared region (particularly, a wavelength of 1,000 to 1,700 nm) and excellent absorption anisotropy. The composition contains at least one specific compound selected from the group consisting of a coloring agent compound having a cationic structure represented by Formula (I) and a reduction body of the coloring agent compound, and a liquid crystal compound.
Abstract:
An optically anisotropic film exhibiting reverse wavelength dispersibility and an Nz factor of about 0.50 (0.40 to 0.60), is formed of a lyotropic liquid crystalline composition containing colorable rod-like and plate-like compounds, where a measurement to obtain an ultraviolet-visible absorption spectrum by applying linearly polarized light is carried out by changing light direction and assuming that an absorbance at a maximum absorption wavelength in a wavelength range of 230 to 400 nm of the rod-like compound is highest at a first direction, and of the plate-like compound is highest at a second direction, the first direction and the second direction are orthogonal to each other, the maximum absorption wavelength in a wavelength range of 230 to 400 nm of the rod-like compound is smaller than that of the plate-like compound, and NzP represented by Expression (N) NzP = (nxP - nzP)/(nxP - nyP) of the plate-like compound is negative.
Abstract:
Provided is an optically anisotropic film having favorable black tightness when the optically anisotropic film is disposed on a display element as a circularly polarizing plate in combination with a polarizer and an obtained display device is viewed from an oblique direction; as well as a circularly polarizing plate and a display device. The optically anisotropic film is formed of a composition containing a non-colorable lyotropic liquid crystal compound, in which an Nz factor of the optically anisotropic film satisfies a relationship of Expression (1) 0.40≤Nz factor≤0.60 and the optically anisotropic film satisfies a relationship of Expression (2) 0.60≤Re(450)/Re(550)≤0.90. In Expressions (1) and (2) Re(450) represents an in-plane retardation of the optically anisotropic film at a wavelength of 450 nm, and Re(550) represents the in-plane retardation of the optically anisotropic film at a wavelength of 550 nm.
Abstract:
An object of the invention is to provide an anisotropic light absorption film having both a high alignment degree and high light resistance, and a laminate provided using the anisotropic light absorption film. An anisotropic light absorption film according to the embodiment of the invention is formed from a composition having a first dichroic azo dye, a second dichroic azo dye, and a compound represented by Formula (I) or a polymer thereof, the first dichroic azo dye has a solution absorption maximum wavelength of 400 nm or greater and less than 550 nm, the second dichroic azo dye has a solution absorption maximum wavelength of 550 nm or greater and 750 nm or less, and the film has an arrangement structure of the first dichroic azo dye or an arrangement structure of the second dichroic azo dye therein.
Abstract:
An object of the present invention is to provide a liquid crystal display device having excellent color reproducibility. A liquid crystal display device of the present invention is a liquid crystal display device including a non-white light source, a rear polarizer, a liquid crystal layer, and a front-side polarizer in this order, in which a light conversion layer that converts a wavelength of light transmitted through the front-side polarizer is provided on a viewer side of the front-side polarizer.
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:
A liquid crystal display device includes first and second polarizers with absorption axes orthogonal to each other; first and second substrates between the first and second polarizers and at least one of which has a transparent electrode; and a twisted-nematic liquid crystal cell disposed between the first and second substrates, wherein a light scattering film is provided at a viewing side of the first and second polarizers and includes a support member and a liquid crystal layer composed of a liquid crystal compound, wherein the pitch of the liquid crystal compound ranges between 0.35 μm and 3 μm and is oriented at 45° relative to a liquid-crystal direction of the liquid crystal display device, wherein the liquid crystal layer has a thickness between 0.17 μm and 10 μm, and wherein a weighted scattering area ratio of a goniophotometer scattering profile of the light scattering film satisfies the following expression: S 60 / ( S 0 ) 2 × 1000 > 40 S 0 = ∑ S 0 ( θ ) × θ ∑ S 0 ( θ ) S 60 = ∑ S 60 ( θ ) × exp ( - 0.2 × θ ) ∑ S 60 ( θ )
Abstract:
Disclosed is an optical film for 3D image display devices, including at least an optically-anisotropic layer formed of a composition that includes, as the main ingredient thereof, a discotic liquid crystal having at least one polymerizable group, wherein the optically-anisotropic layer is a patterned optically-anisotropic layer which includes a first retardation domain and a second retardation domain differing from each other in at least one of the in-plane slow axis direction and retardation in-plane thereof and in which the first and second retardation domains are alternately arranged in plane.
Abstract:
A sensor including a light-receiving element; and an optical element that includes near infrared absorbing dichroic substance. The optical element has an absorption axis with respect to near infrared light in an in-plane direction. When linearly polarized light of near infrared light orthogonal to the absorption axis is radiated from a normal direction of the optical element and from a direction inclined by 45° from the normal direction at an azimuthal angle orthogonal to the absorption axis, an absorbance during the radiation from the direction inclined by 45° from the normal direction is more than an absorbance during the radiation from the normal direction.