Abstract: Provided are a polarizing plate protective film including a resin and a coloring agent having an absorption maximum wavelength in a range of 560 to 620 nm or 460 to 520 nm in an amount of 0.1 parts by mass or more with respect to 100 parts by mass of the resin, in which a film thickness is 1 to 18 ?m, and a moisture content is 0.5% by mass or less, a polarizing plate in which the protective film is used, and a liquid crystal display device in which the polarizing plate is used.

Abstract: Provided is a polymerizable composition including a quantum dot, a polyfunctional thiol, a first (meth)acrylate, and a second (meth)acrylate, in which the first (meth)acrylate is a polyfunctional (meth)acrylate, the second (meth)acrylate is a mono- or higher functional (meth)acrylate having a functional group selected from the group consisting of a carboxy group, a hydroxy group, a phosphate group, and an amino group, and a molecular weight of the second (meth)acrylate is equal to or less than a molecular weight of the polyfunctional thiol.

Abstract: Provided is a polymerizable composition including a quantum dot, a polyfunctional thiol, a polyfunctional (meth)acrylate, and a phenolic compound.

Abstract: A quantum dot-containing composition includes a quantum dot, a ligand having coordinating groups, which coordinates to the surface of the quantum dots, and the ligand is represented by Formula I. In Formula I, A is an organic group including one or more coordinating groups selected from an amino group, a carboxy group, a mercapto group, a phosphine group, and a phosphine oxide group, Z is an (n+m+l)-valent organic linking group, R is a group including an alkyl group, an alkenyl group, or an alkynyl group each of which may have a substituent, Y is a group having a polymer chain which has a degree of polymerization of 3 or greater and which includes a polyacrylate skeleton or the like. n and m are each independently 1 or greater, l is 0 or greater, and n+m+l is integer 3 or greater. At least two coordinating groups are included in a molecule.

Abstract: A phosphor-containing film including a phosphor such as a quantum dot and is capable of suppressing the deterioration of the phosphor even where the film is formed into a laminated structure; and a backlight unit including the phosphor-containing film as a wavelength converting member. The film includes a phosphor-containing layer in which a plurality of fluorescent regions, each of which contains a phosphor that deteriorates through reaction with oxygen when exposed to oxygen, are discretely arranged and a resin layer having impermeability to oxygen is arranged among the plurality of the discretely arranged fluorescent regions; and a first substrate film and a second substrate film, which are respectively laminated on the both main surfaces of the phosphor-containing layer, in which the resin layer has a Knoop hardness of 115 N/mm2 to 285 N/mm2, a creep recovery rate of 22% or less, and an elastic recovery rate of 60% or more.

Abstract: A phosphor-containing film contains a phosphor such as a quantum dot and is capable of suppressing deterioration of phosphor even where the film is formed into a laminated structure; and a backlight unit including the phosphor-containing film as a wavelength converting member. The film includes: a phosphor-containing layer in which a plurality of fluorescent regions, each of which contains a phosphor that deteriorates through reaction with oxygen when exposed to oxygen, are discretely arranged and a resin layer having impermeability to oxygen is arranged among the plurality of the discretely arranged fluorescent regions; and a first substrate film and a second substrate film, which are respectively laminated on both main surfaces of the phosphor-containing layer, in which the resin layer has a Knoop hardness of 115 N/mm2 to 285 N/mm2, a creep recovery rate of 22% or less, and an elastic recovery rate of 60% or more.

Abstract: A phosphor-containing film capable of suppressing deterioration of phosphor and capable of suppressing generation of luminescent spots and the reduction in luminance due to a defect of the resin layer. The film includes: a phosphor-containing layer having a resin layer which has impermeability to oxygen and is provided with a plurality of discretely arranged concave portions, and a plurality of fluorescent regions, each of which is arranged in the concave portion of the resin layer and contains a phosphor that deteriorates through a reaction with oxygen when exposed to oxygen; and a first substrate film and a second substrate film, which are respectively laminated on one main surface and the other main surface of the phosphor-containing layer, in which the fluorescent regions contain a binder and quantum dots serving as the phosphor.

Abstract: Provided are a polarizing plate protective film including a resin and a coloring agent having an absorption maximum wavelength in a range of 560 to 620 nm or 460 to 520 nm in an amount of 0.1 parts by mass or more with respect to 100 parts by mass of the resin, in which a film thickness is 1 to 18 ?m, and a moisture content is 0.5% by mass or less, a polarizing plate in which the protective film is used, and a liquid crystal display device in which the polarizing plate is used.

Abstract: A polymerizable composition provides a high brightness and suppressed decrease in brightness in an outer peripheral region when used in a wavelength conversion member, a wavelength conversion member, a backlight unit, and a liquid crystal display device. The polymerizable composition includes quantum dots having surfaces coordinated with a ligand, a polymerizable compound, and a dispersant, in which the ligand is a molecule that includes a saturated hydrocarbon chain having 6 or more carbon atoms and a coordinating group, a LogP value of the polymerizable compound is 3.0 or lower, the dispersant has a nonpolar and a polar portion in a molecule, and the nonpolar portion is at least one selected from the group consisting of a saturated hydrocarbon chain having 6 or more carbon atoms, an aromatic ring, and a saturated aliphatic ring. The wavelength conversion member, the backlight unit, and the liquid crystal display device include the polymerizable composition.

Abstract: A phosphor-containing film capable of suppressing the deterioration of the phosphor and suitable for production using a roll-to-roll method; and a backlight unit provided with the phosphor-containing film. The phosphor-containing film includes, between two facing substrate films, a first resin layer having a first concavo-convex shape on one main surface; a second resin layer having a second concavo-convex shape on the other main surface facing the one main surface of the first resin layer that has the first concavo-convex shape; and a third layer that follows the first concavo-convex shape and the second concavo-convex shape between the first resin layer and the second resin layer, in which the two substrate films are each a barrier film including a support film and a barrier layer laminated on the support film, the first resin layer and the second resin layer contain phosphors, and the third layer is formed of an inorganic material.

Abstract: A phosphor-containing film contains a phosphor such as a quantum dot and is capable of suppressing deterioration of phosphor even where the film is formed into a laminated structure; and a backlight unit including the phosphor-containing film as a wavelength converting member. The film includes: a phosphor-containing layer in which a plurality of fluorescent regions, each of which contains a phosphor that deteriorates through reaction with oxygen when exposed to oxygen, are discretely arranged and a resin layer having impermeability to oxygen is arranged among the plurality of the discretely arranged fluorescent regions; and a first substrate film and a second substrate film, which are respectively laminated on both main surfaces of the phosphor-containing layer, in which the resin layer has a Knoop hardness of 115 N/mm2 to 285 N/mm2, a creep recovery rate of 22% or less, and an elastic recovery rate of 60% or more.

Abstract: A phosphor-containing film capable of suppressing deterioration of phosphor and capable of suppressing generation of luminescent spots and the reduction in luminance due to a defect of the resin layer. The film includes: a phosphor-containing layer having a resin layer which has impermeability to oxygen and is provided with a plurality of discretely arranged concave portions, and a plurality of fluorescent regions, each of which is arranged in the concave portion of the resin layer and contains a phosphor that deteriorates through a reaction with oxygen when exposed to oxygen; and a first substrate film and a second substrate film, which are respectively laminated on one main surface and the other main surface of the phosphor-containing layer, in which the fluorescent regions contain a binder and quantum dots serving as the phosphor.

Abstract: A quantum dot-containing composition includes a quantum dot, a ligand having coordinating groups, which coordinates to the surface of the quantum dots, and the ligand is represented by Formula I. In Formula I, A is an organic group including one or more coordinating groups selected from an amino group, a carboxy group, a mercapto group, a phosphine group, and a phosphine oxide group, Z is an (n+m+l)-valent organic linking group, R is a group including an alkyl group, an alkenyl group, or an alkynyl group each of which may have a substituent, Y is a group having a polymer chain which has a degree of polymerization of 3 or greater and which includes a polyacrylate skeleton or the like. n and m are each independently 1 or greater, l is 0 or greater, and n+m+l is integer 3 or greater. At least two coordinating groups are included in a molecule.

Abstract: There is provided a lighting device using a wavelength conversion sheet used in a liquid crystal display or the like, and an object of the invention is to provide a lighting device having satisfactory durability. The object is achieved by a lighting device including: a point light source; a wavelength conversion sheet; and a light intensity reduction member arranged between the point light source and the wavelength conversion layer, in which the light intensity reduction member reduces peak illuminance of light that is applied by the point light source on a light incident surface of a wavelength conversion sheet by 10% to 80%, and absorbance of light having a wavelength of 450 nm measured by using an integrating sphere is less than 5%.

Abstract: An object of the present invention is to provide a wavelength conversion film having excellent durability. The problem is solved by providing a wavelength conversion film including: a wavelength conversion layer and base materials sandwiching the wavelength conversion layer therebetween; and a welded portion in which the base materials are welded to each other on an outer side in a surface direction of the wavelength conversion layer, in which the base materials have a support having a vapor permeability less than or equal to 10 g/(m2·day) and a first organic layer, which is formed on one surface side of the support and formed of polyvinyl alcohol or a polyvinyl alcohol copolymer, and have the wavelength conversion layer sandwiched therebetween while the support faces outward.

Abstract: A polymerizable composition includes a quantum dot, a monomer having an epoxy group or an oxetanyl group, and a polymer dispersant, in which the polymer dispersant is a compound represented by Formula I. In Formula I, A is an organic group having a coordinating group coordinated with a quantum dot, Z is an (n+m+l)-valent organic linking group, X1 and X2 are a single bond or a divalent organic linking group, R1 represents an alkyl group, an alkenyl group, or an alkynyl group each of which may have a substituent, P is a polymer chain which has a polymerization degree of 3 or greater and which includes a polymer skeleton and of which the solubility parameter is 17 MPa1/2 to 22 MPa1/2. n and m are each independently the number of 1 or greater, l is the number of 0 or greater, n+m+l is an integer of 2 to 10.

Abstract: A quantum dot-containing composition including a quantum dot; and a ligand having a coordinating group coordinated with a surface of the quantum dot, in which the ligand is represented by Formula I. In Formula I, A is an organic group including one or more coordinating groups selected from an amino group, a carboxy group, a mercapto group, a phosphine group, and a phosphine oxide group, Z is an (n+m+l)-valent organic linking group, R is a group including an alkyl group, an alkenyl group, or an alkynyl group each of which may have a substituent, Y is a group having a polymer chain which has a degree of polymerization of 3 or greater and which includes a polyacrylate skeleton or the like. n and m are each independently the number of 1 or greater, l is the number of 0 or greater, and n+m+l is an integer of 3 or greater.

Abstract: A polymerizable composition provides a high brightness and suppressed decrease in brightness in an outer peripheral region when used in a wavelength conversion member, a wavelength conversion member, a backlight unit, and a liquid crystal display device. The polymerizable composition includes quantum dots having surfaces coordinated with a ligand, a polymerizable compound, and a dispersant, in which the ligand is a molecule that includes a saturated hydrocarbon chain having 6 or more carbon atoms and a coordinating group, a Log P value of the polymerizable compound is 3.0 or lower, the dispersant has a nonpolar and a polar portion in a molecule, and the nonpolar portion is at least one selected from the group consisting of a saturated hydrocarbon chain having 6 or more carbon atoms, an aromatic ring, and a saturated aliphatic ring. The wavelength conversion member, the backlight unit, and the liquid crystal display device include the polymerizable composition.

Abstract: The wavelength conversion member includes a wavelength conversion layer containing a quantum dot, in which the wavelength conversion layer is a cured layer formed by curing a polymerizable composition containing the quantum dot and a polymerizable compound, the polymerizable composition contains at least one type of first polymerizable compound, the first polymerizable compound is a monofunctional (meth)acrylate compound in which a value of Mw/F obtained by dividing a molecular weight Mw by the number F of polymerizable functional groups in one molecule is greater than or equal to 130, the number of (meth)acryloyl groups in one molecule is 1, and a Log P value is less than or equal to 3.0, and the polymerizable composition contains greater than or equal to 50 parts by mass of the first polymerizable compound with respect to 100 parts by mass of the total amount of the polymerizable compound contained in the polymerizable composition.

Abstract: An electrochemical device including: a positive electrode including oxygen as a positive active material; a negative electrode including a lithium ion-intercalatable/deintercalatable material as a negative active material; and an electrolytic solution in fluid communication with the positive electrode and the negative electrode and including a solvent and an oxygen absorbing/desorbing material with an oxygen binding rate of about 60 to about 95% in a pure oxygen atmosphere.