Abstract: A light absorption filter that contains a resin; a dye having a main absorption wavelength band in a wavelength range of 400 to 700 nm, including at least one of a specific azo-based coloring agent represented by any of General Formulae (i) to (iv) or a specific indoaniline-based coloring agent represented by General Formula (v); and a compound that generates a radical upon ultraviolet irradiation. There is also an optical filter that uses the light absorption filter and a manufacturing method for the optical filter, as well as an organic electroluminescent display device, an inorganic electroluminescent display device, or a liquid crystal display device, which includes the optical filter.

Abstract: A wavelength selective absorption filter and an organic electroluminescent display device including the wavelength selective absorption filter, which includes a resin, and dyes B, C, and D having a main absorption wavelength range in different wavelength regions, in which a light absorbance Ab (?) of the wavelength selective absorption filter at a wavelength of ? nm satisfies Relational Expression (I) Ab (500)/Ab (600)<0.7 and Relational Expression (II) Ab (430)/Ab (700)<3.0.

Abstract: A light absorption filter that includes a wavelength selective absorption layer containing a resin and a squarine-based coloring agent represented by General Formula (1) and includes an adjacent layer arranged on at least one surface of the wavelength selective absorption layer, in which the adjacent layer contains an acid or a basic compound. There are also provided an optical filter using the light absorption filter and a manufacturing method for the optical filter, as well as an organic electroluminescent display device, an inorganic electroluminescent display device, and a liquid crystal display device, which include the optical filter. In the formula, A and B each independently represent an aryl group which may have a substituent, a heterocyclic group which may have a substituent, or —CH=G, where G represents a heterocyclic group which may have a substituent.

Abstract: A light absorption filter containing a resin, a compound A having an acid group, a compound B that forms a hydrogen bond with the acid group contained in the compound A and generates a radical upon ultraviolet irradiation, and a dye having a main absorption wavelength band in a wavelength range of 400 to 700 nm. There is also an optical filter that uses the light absorption filter and a manufacturing method for the optical filter, as well as an organic electroluminescent display device, an inorganic electroluminescent display device, or a liquid crystal display device, which includes the optical filter.

Abstract: Provided are a resin composition including a compound represented by Formula (1) and a resin, an optical filter including the resin composition, a liquid crystal display device and a solid-state imaging element including the optical filter, and a compound suitable as a light absorbing component of the resin composition. In Formula (1), Dye represents a colorant structural part obtained by removing n1 hydrogen atoms from a squarylium compound having a specific structure, Q1 is a structural part including a metallocene structure, and n1 represents an integer of 1 to 6.

Abstract: There are provided a color correction filter for a white organic electroluminescent light source including a resin and 0.1 part by mass or more of a coloring agent having an absorption maximum wavelength in a range of 560 to 620 nm or 460 to 520 nm with respect to 100 parts by mass of the resin, and having a moisture content of 0.5% by mass or less, and an organic EL display device having this filter.

Abstract: Provided are a resin composition including a compound represented by Formula (1) and a resin, a film and a filter including the resin composition, a liquid crystal display device and a solid-state imaging element including the filter, and a compound suitable as a light absorbing component of the resin composition and the filter. In Formula (1), Dye represents a colorant structural part obtained by removing n1 hydrogen atoms from a squarylium compound having a specific structure. Q1 is a structural part in which energy levels of a highest occupied molecular orbital and a lowest unoccupied molecular orbital satisfy a specific condition. L1 represents a divalent linking group and n1 represents an integer of 1 to 4.

Abstract: The present invention provides an ultraviolet-sensing member in which it is easy to determine whether an irradiation amount which inactivates the novel coronavirus has been irradiated, and an ultraviolet-sensing kit. The ultraviolet-sensing member of the present invention contains a sensitizer having an absorption maximal wavelength in a range of 200 to 230 nm, a photoactivator, and a color-forming agent.

Abstract: Provided are a wavelength selective absorption filter including a resin and the following dye A and dye D, each of which has a main absorption wavelength band in a different wavelength range, in which an absorbance Ab (?) at a wavelength ? nm of this wavelength selective absorption filter satisfies a relationship of the Relational Expression (I) 0.05<Ab (450)/Ab (430)<1.00, as well as a polarizing plate and an organic electroluminescent display device or liquid crystal display device including the wavelength selective absorption filter. The dye A is a dye having a main absorption wavelength band in the wavelength selective absorption filter at a wavelength of 400 to 430 nm. The dye D is a dye having a main absorption wavelength band in the wavelength selective absorption filter at a wavelength of 640 to 730 nm.

Abstract: Provided is a colorant filter including at least one colorant; and at least one binder, in which the colorant filter has an absorption spectrum having an absorption maximum in a wavelength region of 560 nm to 620 nm, and in the absorption spectrum, a difference D1 between two wavelengths which give 10% absorbance with respect to an absorbance at the absorption maximum and a difference D2 between two wavelengths which give 50% absorbance with respect to the absorbance at the absorption maximum satisfy Expressions (a) D1?90 nm and (b) D1/D2?4.0.

Abstract: A wavelength selective absorption filter contains a resin, a coloring agent, and a compound having at least one polar group of a carboxylic acid ester bond, a carboxylic acid amide bond, a sulfonic acid amide bond, a urethane bond, or a sulfonyl bond and a MW?1,000 where dye includes at least one of dye A having a main absorption wavelength range at a wavelength of 390 to 440 nm and dye D having a main absorption wavelength range at a wavelength of 680 to 780 nm, a 20% value wavelength A with respect to an absorbance maximal value exhibited by a main absorption wavelength is 455 nm or less where dye A is contained, and a 20% value wavelength D with respect to the absorbance maximal value exhibited by the main absorption wavelength is 640 nm or more where dye D is contained, and a display device.

Abstract: There are provided a light absorption filter containing a resin, a dye having a main absorption wavelength band in a wavelength range of 400 to 700 nm, and a compound that generates a radical upon ultraviolet irradiation, where the resin is composed of a polymer having both a high affinity part and a low affinity part with respect to the dye and the compound that generates a radical upon ultraviolet irradiation, or a light absorption filter containing a dye having a main absorption wavelength band in a wavelength range of 400 to 700 nm and a resin composed of a polymer including a partial structure that generates a radical upon ultraviolet irradiation, an optical filter, a self-luminous display device, an organic electroluminescent display device, and a liquid crystal display device, in which this light absorption filter is used, as well as a manufacturing method for an optical filter.

Abstract: Provided are a resin composition containing a squarylium compound and a resin, in which the squarylium compound includes at least one selected from squarylium compounds represented by specific formulae; a coated and dried product or a melt-kneaded product; an optical filter including these components; an image display device and a solid-state imaging element including the optical filter; and a squarylium compound represented by a specific formula and a method for producing the same.

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 self-luminous display device includes a wavelength selective absorption filter containing a resin and a dye including dye A, which has a main absorption wavelength band (WB) at a wavelength of 390 to 435 nm, a dye B, which has a main absorption WB at a wavelength of 500 to 520 nm, and a dye C, which has a main absorption WB at a wavelength of 580 to 620 nm, and a light emitting diode source, the wavelength selective absorption filter satisfies a definition according to Expression (I): Tmin (500 to 520)?Tmin (580 to 620)>0%; where Tmin indicates a minimum transmittance (%) at the cited wavelength, and a self-luminous display device in which the wavelength selective filter has a specific gas barrier layer directly disposed on at least one surface of the wavelength selective absorption filter.

Abstract: Provided are a wavelength selective absorption filter containing a resin and a dye A, which has a main absorption wavelength band in the wavelength selective absorption filter at a wavelength of 400 to 450 nm, and a dye C, which has a main absorption wavelength band in the wavelength selective absorption filter at a wavelength of 560 to 600 nm, each of which has a main absorption wavelength band in a different wavelength range, as well as a polarizing plate and an organic electroluminescent display device or liquid crystal display device, which include the wavelength selective absorption filter. However, the dye A and the dye C do not have fluorescence.

Abstract: A display device including a laminate includes a wavelength selective absorption layer containing a resin, a dye including at least one of four specific dyes A to D, and an antifading agent for a dye, and includes a gas barrier layer, and a wavelength conversion material; the laminate includes a wavelength selective absorption layer containing a resin, a dye, and an electron migration-type antifading agent in which the energy level of the highest occupied molecular orbital and the lowest unoccupied molecular orbital satisfy a specific relational expression in relation to the dye, and includes the gas barrier layer; an organic electroluminescent display device includes this laminate. The gas barrier layer contains a crystalline resin, has a layer thickness of 0.1 ?m to 10 ?m, has a layer oxygen permeability of 60 cc/m2·day·atm or less, and is directly arranged on at least one surface of the wavelength selective absorption layer.

Abstract: Provided are a wavelength selective absorption filter including a resin and the following dye A and dye D, each of which has a main absorption wavelength band in a different wavelength range, in which an absorbance Ab (?) at a wavelength ? nm of this wavelength selective absorption filter satisfies a relationship of the Relational Expression (I) 0.05<Ab (450)/Ab (430)<1.00, as well as a polarizing plate and an organic electroluminescent display device or liquid crystal display device including the wavelength selective absorption filter. The dye A is a dye having a main absorption wavelength band in the wavelength selective absorption filter at a wavelength of 400 to 430 nm. The dye D is a dye having a main absorption wavelength band in the wavelength selective absorption filter at a wavelength of 640 to 730 nm.

Abstract: There is provided a light absorption filter, an optical filter, an OLED display device, or a liquid crystal display device, containing a resin; a dye that has a main absorption wavelength band at a wavelength of 400 to 700 nm; and a compound that generates a radical upon ultraviolet irradiation, in which the dye includes a specific squarine-based coloring agent represented by General Formula (1) or a specific benzylidene-based coloring agent or cinnamylidene-based coloring agent represented by General formula (V).

Abstract: Provided are a color conversion composition which contains at least one kind of compound represented by a specific general formula, a compound which is used in the color conversion composition and represented by a specific general formula, and a light emitting device which has a color conversion portion consisting of the color conversion composition and a light source.