Light absorption filter, optical filter and method for manufacturing same, display element intermediate product, display element, organic electroluminescence display device, inorganic electroluminescence display device, and liquid crystal display device

Abstract

The present invention pertains to: a light absorption filter comprising a light absorptive evanescent layer containing a resin, a dye that has a main absorption wavelength band at a wavelength of 400-700 nm, and a compound that generates radicals through ultraviolet irradiation, and a wavelength selective absorption layer containing a resin and a dye that has a main absorption wavelength band at a wavelength of 400-700 nm, but not containing a compound that generates radicals through ultraviolet irradiation; and an optical filter using the same, a method for manufacturing the optical filter, a display element intermediate product, a display element, an OLED display device, an inorganic EL display device, and a liquid crystal display device.

Description

Light-absorbing filters, optical filters and their manufacturing methods, display element intermediates, display elements, organic electroluminescent display devices, inorganic electroluminescent display devices, and liquid crystal display devices

[0001] The present invention relates to a light-absorbing filter, an optical filter and a manufacturing method thereof, a display element intermediate, a display element, an organic electroluminescent display device, an inorganic electroluminescent display device, and a liquid crystal display device.

[0002] 2. Description of the Related Art In recent years, organic electroluminescence (OLED) display devices, inorganic electroluminescence display devices (inorganic EL display devices), liquid crystal display devices, and the like have been used as image display devices.

[0003] Liquid crystal display devices (LCDs) are becoming increasingly popular as space-saving, low-power image display devices. Because the LCD panel that displays images is a non-emissive device, LCDs are equipped with a backlight unit located behind the LCD panel to supply light to the LCD panel. OLED display devices utilize the spontaneous emission of OLED display elements to display images. Therefore, compared to various display devices such as LCDs and plasma display devices, they offer advantages such as a high contrast ratio, excellent color reproducibility, a wide viewing angle, fast response, and a thin, lightweight design. In addition to these advantages, they are also being actively researched and developed as next-generation display devices due to their flexibility. Inorganic EL display devices utilize the spontaneous emission of inorganic EL display elements as a fluorescent material to display images, replacing the OLED display elements used in OLED display devices. Recent research has raised hopes for the realization of display devices superior to OLED display devices in terms of larger screen sizes and longer lifespans.

[0004] In the development of image display devices, techniques for incorporating light-absorbing filters as components are known. For example, in liquid crystal display devices, when white light-emitting diodes (LEDs) are used as light sources for backlight units, attempts have been made to provide light-absorbing filters to block light of unnecessary wavelengths emitted from the white LEDs. Furthermore, attempts have been made to provide light-absorbing filters in OLED display devices in order to suppress reflection of external light. Patent Literature 1 discloses a method for preventing reflection of external light without reducing the transmittance of display light by combining multiple dyes with different maximum absorption wavelengths.

[0005] As another form of light-absorbing filter incorporated into image display devices, research is also underway on optical filters that combine light-absorbing regions with light-absorbing effects and regions where light absorption has been eliminated (hereinafter simply referred to as "light-absorption-eliminated regions") by eliminating light absorption in desired regions. Generally, non-display regions (regions from which display light is not emitted, i.e., non-emissive regions) of OLED display devices often have high reflectivity relative to display regions (regions from which display light is emitted, i.e., emissive regions) due to the presence of metal wiring or the like. When incorporating an optical filter into an image display device, by arranging the light-absorbing regions on the non-display regions and the light-absorption-eliminated regions on the display regions of the OLED display device, it is possible to minimize the decrease in transmittance of display light and improve the anti-reflection effect. For example, Patent Document 2 describes a light-absorbing filter containing a resin, a compound having an acid group, a compound that forms hydrogen bonds with the acid group-containing compound and generates radicals upon irradiation with ultraviolet light, and a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm. The light-absorbing filter described in Patent Document 2 is said to exhibit a high decolorization rate when irradiated with ultraviolet light, and to exhibit almost no absorption (hereinafter also referred to as "secondary absorption") due to the new colored structure associated with the decomposition of the dye by ultraviolet light, thereby achieving high decolorization performance. Patent Document 3 also describes a light-absorbing filter containing a resin, a dye having a main absorption wavelength band in the range of 400 to 700 nm, and a compound that generates radicals when irradiated with ultraviolet light, wherein the dye includes at least one of an azo dye represented by any one of general formulas (i) to (iv) and an indoaniline dye represented by general formula (v). The light-absorbing filter described in Patent Document 3 is said to exhibit an excellent decolorization rate even when irradiated with ultraviolet light at room temperature, and to exhibit almost no secondary absorption when irradiated with ultraviolet light, thereby achieving high decolorization performance.

[0006] International Publication No. 2021 / 066082 International Publication No. 2023 / 068235 International Publication No. 2023 / 234353

[0007] However, the light-absorbing filter described in Patent Document 1 has a problem in that the transmittance of display light is impaired when the absorbance is increased to the point where reflection of external light can be sufficiently suppressed. Also, the methods described in Patent Documents 2 and 3 do not sufficiently suppress reflection of external light caused by the display unit in the display device, and improvements have been desired.

[0008] That is, the present invention aims to provide a light-absorbing filter that has high light-absorbing regions and low light-absorbing regions in desired positions, thereby obtaining an optical filter that reduces reflectance to a desired level without impairing the transmittance of display light, and a display element intermediate including this light-absorbing filter. Another object of the present invention is to provide an optical filter using the above light-absorbing filter, which has high light-absorbing regions and low light-absorbing regions in desired positions, thereby reducing reflectance to a desired level without impairing the transmittance of display light, a method for manufacturing the optical filter, and organic electroluminescent display devices, inorganic electroluminescent display devices, and liquid crystal display devices that include this optical filter. Another object of the present invention is to provide a display element obtained by mask-exposing the above display element intermediate, which has high light-absorbing regions and low light-absorbing regions in desired positions, thereby reducing reflectance to a desired level without impairing the transmittance of display light, and an organic electroluminescent display device, inorganic electroluminescent display device, and liquid crystal display device that include this display element.

[0009] In view of the above problems, the present inventors have conducted extensive research and found that by configuring an optical filter that includes both a light-absorbing filter whose light absorption property is lost when irradiated with ultraviolet light and a light-absorbing filter whose light absorption property is not changed when irradiated with ultraviolet light, it is possible to impart to a single optical filter both the absorption properties required to suppress external light reflection in the display area of ​​a display device and the absorption properties required to suppress external light reflection in the non-display area.The present invention was completed after further research based on this finding.

[0010] That is, the above-mentioned problems have been solved by the following means. <1> A light-absorbing filter comprising: a light-absorbing and dissipating layer containing a resin, a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, and a compound that generates radicals upon ultraviolet irradiation; and a wavelength-selective and absorbing layer that contains a resin and a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, but does not contain a compound that generates radicals upon ultraviolet irradiation. <2> The light-absorbing filter according to <1>, in which the compound that generates radicals upon ultraviolet irradiation, contained in the light-absorbing and dissipating layer, comprises a combination of compound A having an acid group and compound B having a structure that can form a hydrogen bond with the acid group contained in compound A. <3> The light-absorbing filter according to <2>, in which compound A is chemically bonded to a polymer that constitutes the resin contained in the light-absorbing and dissipating layer. <4> The light-absorbing filter according to any one of <1> to <3>, in which the light-absorbing and dissipating layer undergoes a chemical change and discoloration of the dye contained in the light-absorbing and dissipating layer upon ultraviolet irradiation. <5> An optical filter obtained by mask-exposing the light-absorbing filter according to any one of <1> to <4> with ultraviolet light irradiation. <6> A display element intermediate, including the light-absorbing filter according to any one of <1> to <4>. <7> A display element obtained by mask-exposing the display element intermediate according to <6> with ultraviolet light irradiation. <8> An organic electroluminescent display device, an inorganic electroluminescent display device, or a liquid crystal display device, including the optical filter according to <5> or the display element according to <7>. <9> An organic electroluminescent display device, an inorganic electroluminescent display device, or a liquid crystal display device according to <8>, having, on the viewer's side of the optical filter according to <5> or the display element according to <7>, a layer that inhibits light absorption of the compound that generates radicals when irradiated with ultraviolet light. <10> A method for producing an optical filter, comprising irradiating the light-absorbing filter according to any one of <1> to <4> with ultraviolet light and mask-exposing.

[0011] In the present invention, when there are multiple substituents or linking groups, etc., represented by a specific symbol or formula (hereinafter referred to as substituents, etc.), or when multiple substituents, etc., are specified simultaneously, unless otherwise specified, the respective substituents, etc., may be the same or different from one another. The same applies to the specification of the number of substituents, etc. Furthermore, when multiple substituents, etc., are adjacent to one another (especially when they are adjacent), they may be linked to each other to form a ring, unless otherwise specified. Furthermore, unless otherwise specified, rings, such as alicyclic rings, aromatic rings, and heterocyclic rings, may be further condensed to form condensed rings. In the present invention, unless otherwise specified, the components constituting the light-absorbing and dissipating layer in the light-absorbing filter (such as resins, dyes, compounds that generate radicals upon ultraviolet irradiation, and other components that may be optionally contained) may each be contained in the light-absorbing and dissipating layer in the light-absorbing filter, either alone or in combination of two or more. Furthermore, in the present invention, the components constituting the wavelength-selective absorption layer in the light-absorbing filter (such as resins, dyes, and other components that may be appropriately contained) may each be contained in one type or two or more types in the wavelength-selective absorption layer in the light-absorbing filter. The same applies to optical filters produced using the light-absorbing filter of the present invention. The same description of the light-absorbing filter of the present invention can be preferably applied to the optical filter of the present invention, unless otherwise specified, except that the layer corresponding to the light-absorbing and dissipating layer in the light-absorbing filter has a light-absorbing and dissipating site formed by ultraviolet irradiation. In the present invention, unless otherwise specified, the double bond may be either E-type or Z-type, if present in the molecule, or a mixture thereof. In the present invention, the term "compound" (including complex) is used to mean not only the compound itself, but also its salts and ions. Furthermore, it also means that compounds with partially modified structures are included as long as the effects of the present invention are not impaired. Furthermore, compounds that are not specified as substituted or unsubstituted may have any substituent as long as the effects of the present invention are not impaired. The same applies to substituents and linking groups.In the present invention, a numerical range expressed using "to" means a range that includes the numerical values ​​written before and after "to" as the lower and upper limits. In the present invention, the term "composition" encompasses not only mixtures with constant component concentrations (each component is uniformly dispersed) but also mixtures in which the component concentrations vary within a range that does not impair the intended function. In the present invention, "having a main absorption wavelength band in the wavelength range XX to YY nm" means that a wavelength exhibiting maximum absorption (i.e., a maximum absorption wavelength) exists in the wavelength range XX to YY nm. Therefore, as long as this maximum absorption wavelength is within the wavelength range, the entire absorption band including this wavelength may be within the wavelength range, or may extend outside the wavelength range. In addition, when there are multiple maximum absorption wavelengths, it is sufficient that the maximum absorption wavelength exhibiting the greatest absorbance is present in the wavelength range. In other words, maximum absorption wavelengths other than the maximum absorption wavelength exhibiting the greatest absorbance may be present either inside or outside the wavelength range XX to YY nm. In the present invention, "(meth)acrylate" refers to either or both of acrylate and methacrylate, "(meth)acrylic acid" refers to either or both of acrylic acid and methacrylic acid, and "(meth)acryloyl" refers to either or both of acryloyl and methacryloyl.

[0012] The light-absorbing filter of the present invention has regions with different light absorption properties at desired positions, making it possible to obtain an optical filter that reduces reflectance to a desired level without impairing the transmittance of display light. The optical filter of the present invention also has regions with different light absorption properties at desired positions, making it possible to reduce reflectance to a desired level without impairing the transmittance of display light. The organic electroluminescent display device, inorganic electroluminescent display device, and liquid crystal display device of the present invention each include the optical filter of the present invention. The display element intermediate of the present invention includes the light-absorbing filter of the present invention, and the organic electroluminescent display device, inorganic electroluminescent display device, and liquid crystal display device, each including a display element obtained by exposing this display element intermediate using a mask, each include the optical filter of the present invention. The optical filter of the present invention can be preferably produced by the production method of the present invention.

[0013] FIG. 1 is a schematic diagram showing an outline of one embodiment of a liquid crystal display device having an optical filter of the present invention.

[0014] [Light-Absorbing Filter] The light-absorbing filter of the present invention is a light-absorbing filter comprising: a light-absorbing and disappearing layer containing a resin, a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, and a compound that generates radicals upon irradiation with ultraviolet light; and a wavelength-selective and absorbing layer that contains a resin and a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, but does not contain a compound that generates radicals upon irradiation with ultraviolet light.

[0015] In the present invention, the main absorption wavelength band of a dye refers to the main absorption wavelength band of the dye measured in the state of a light-absorbing filter. Specifically, it is measured in the state of a light-absorbing filter with a substrate under the conditions described in the section on absorbance of a light-absorbing filter in the Examples described below. In the light-absorbing filter of the present invention, the above-mentioned "dye" is dispersed (preferably dissolved) in the above-mentioned resin contained in the same layer (light-absorbing and disappearing layer or wavelength-selective absorption layer), thereby making the light-absorbing filter a filter that exhibits a specific absorption spectrum derived from the dye. This dispersion may be random, regular, or the like.

[0016] The light-absorbing and disappearing layer constituting the light-absorbing filter of the present invention has a compound that generates radicals upon irradiation with ultraviolet light dispersed (preferably dissolved) in a resin, so that when irradiated with ultraviolet light, radicals are generated, and the generated radicals react with a dye, causing a chemical change in the dye, thereby fading and decolorizing the dye. That is, the light-absorbing and disappearing layer constituting the light-absorbing filter of the present invention is a layer having the property that the dye contained in the light-absorbing and disappearing layer undergoes a chemical change and can be decolorized upon irradiation with ultraviolet light.

[0017] In addition, in the light-absorbing and dissipating layer constituting the light-absorbing filter of the present invention, when the compound that generates radicals upon ultraviolet irradiation contains, as described below, a compound A having an acid group and a compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A, the efficiency of generating radical species upon ultraviolet irradiation is improved compared to when a commonly used photoradical generator such as a benzophenone compound is used. Therefore, even when ultraviolet irradiation is performed under mild temperature conditions such as room temperature, sufficient radical species are generated, and these radical species react directly or indirectly with the dye, causing the dye to decompose, resulting in fading and discoloration of the dye. In addition, in the light-absorbing and dissipating layer constituting the light-absorbing filter of the present invention, when compound A having an acid group is bonded to a polymer that constitutes the resin contained in the light-absorbing and dissipating layer, radicals are generated near the dye upon ultraviolet irradiation, which has the effect of making the radicals more likely to react with the dye. Furthermore, "compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A," which will be described later, forms a hydrogen bond with compound A and is dispersed (preferably dissolved) in the resin, or when compound A containing the acid group is bonded to a polymer constituting the resin, forms a hydrogen bond with compound A in the resin, and when irradiated with ultraviolet light, generates a radical, and the generated radical reacts with a nearby dye, making the radical more likely to react with the dye, thereby more efficiently fading and decolorizing the dye. The light-absorbing and dissipating layer constituting the light-absorbing filter of the present invention will be described in detail below.

[0018] <<Light-Absorbing and Dissipating Layer>> <Dye Having a Main Absorption Wavelength Band in a Wavelength Range of 400 to 700 nm> Specific examples of dyes having a main absorption wavelength band in a wavelength range of 400 to 700 nm that can be used in the light-absorbing and dissipating layer that constitutes the light-absorbing filter of the present invention include squaraine (SQ), cyanine (CY), benzylidene, cinnamylidene, azo, and indoaniline pigments (dyes).

[0019] Among these, the light-absorbing and dissipating layer preferably contains at least one of an azo dye represented by any one of general formulas (i) to (iv) below and an indoaniline dye represented by general formula (v) below, because these dyes are less likely to produce secondary colored structures due to dye decomposition. The azo dye represented by general formula (i) below is a dye having a main absorption wavelength band in the wavelength range of approximately 400 to 500 nm, the azo dye represented by any one of general formulas (ii) to (iv) below is a dye having a main absorption wavelength band in the wavelength range of approximately 450 to 650 nm, and the indoaniline dye represented by general formula (v) below is a dye having a main absorption wavelength band in the wavelength range of approximately 580 to 700 nm. When the light-absorbing and dissipating layer has such a configuration, it can exhibit excellent discoloration properties when irradiated with ultraviolet light.

[0020] The light-absorbing and dissipating layer may contain one or more of the following dyes: an azo dye represented by the following general formula (i), an azo dye represented by the following general formula (ii), an azo dye represented by the following general formula (iii), an azo dye represented by the following general formula (iv), and an indoaniline dye represented by the following general formula (v). The light-absorbing and dissipating layer may contain a squaraine dye represented by general formula (1) described in the wavelength-selective absorption layer described below. The light-absorbing and dissipating layer may also contain a dye other than the azo dye represented by any of general formulas (i) to (iv), the indoaniline dye represented by general formula (v), and the squaraine dye represented by general formula (1) described below. By optimizing the blending ratio of the azo dye represented by any of general formulas (i) to (iv) and the indoaniline dye represented by general formula (v) described below, in combination with the wavelength-selective absorption layer described below, it is possible to suppress a change in the color of reflected light compared to when no dye is contained (hereinafter, also referred to as "adjusting the color of reflected light to be more neutral").

[0021] The light-absorbing and dissipating layer preferably contains a dye that absorbs in a wavelength range with lower absorbance than the main absorption wavelength ranges of the dyes contained in the wavelength-selective-absorption layer described below, from the viewpoint of more easily achieving both suppression of external light reflection and suppression of brightness reduction. Specifically, the light-absorbing and dissipating layer preferably contains a dye having a main absorption wavelength range that is 5 nm or more away from any of the main absorption wavelength ranges of the dyes contained in the wavelength-selective-absorption layer described below. In embodiments applied to OLED display devices, the "dye" contained in the light-absorbing and dissipating layer preferably contains at least one of the following dyes E to G, each of which has a main absorption wavelength range in a different wavelength region: Dye E: a dye having a main absorption wavelength range in the wavelength range of 430 to 480 nm; Dye F: a dye having a main absorption wavelength range in the wavelength range of 500 to 570 nm; Dye G: a dye having a main absorption wavelength range in the wavelength range of 600 to 660 nm. The light-absorbing and dissipating layer may contain one or more types of dye E. As with dye E, dyes F and G that can be contained in the light-absorbing and dissipating layer may each independently be one type or two or more types. The wavelength range in which dye E has its main absorption wavelength band is preferably 430 to 475 nm, more preferably 430 to 470 nm, and even more preferably 430 to 465 nm. The wavelength range in which dye F has its main absorption wavelength band is preferably 505 to 560 nm, more preferably 510 to 555 nm, and even more preferably 515 to 555 nm. The wavelength range in which dye G has its main absorption wavelength band is preferably 610 to 655 nm, more preferably 6610 to 650 nm, and even more preferably 610 to 640 nm. The light-absorbing and dissipating layer may also contain dyes other than dyes E to G.

[0022] In particular, from the viewpoint of combination with the wavelength-selective absorption layer described below, it is preferable that at least two types of dyes E, F, and G are contained, and it is even more preferable that all three types are contained. Among these, it is preferable that the wavelength-selective absorption layer described below contains all of the dyes A to D described below, and that the light-absorbing and disappearing layer contains all of the dyes E to G described above, from the viewpoints of achieving a higher level of suppression of external light reflection and suppression of brightness reduction in the optical filter, and of enabling the color of reflected light to be adjusted to a more neutral color when the obtained optical filter is applied to a display device. In relation to the dyes that may be contained in the wavelength-selective absorption layer described below, it is preferable that the main absorption wavelength band of the dye E is 5 to 70 nm (more preferably 5 to 60 nm) away from the main absorption wavelength band of the dye A described below, and 5 to 80 nm (more preferably 10 to 80 nm) away from the main absorption wavelength band of the dye B described below. The main absorption wavelength band of the dye F is preferably 5 to 60 nm (more preferably 10 to 50 nm) away from the main absorption wavelength band of the dye B described below, and 5 to 60 nm (more preferably 10 to 50 nm) away from the main absorption wavelength band of the dye C described below. The main absorption wavelength band of the dye G is preferably 5 to 60 nm (more preferably 10 to 50 nm) away from the main absorption wavelength band of the dye C described below, and 5 to 80 nm (more preferably 10 to 60 nm) away from the main absorption wavelength band of the dye D described below.

[0023] In the present invention, in the dyes represented by the following general formulas, the cations are delocalized and multiple tautomeric structures exist. Therefore, in the present invention, if at least one tautomeric structure of a dye corresponds to each general formula, the dye is considered to be a dye represented by that general formula. Therefore, a dye represented by a specific general formula can also be said to be a dye whose at least one tautomeric structure can be represented by a specific general formula. In the present invention, the dye represented by a general formula may have any tautomeric structure as long as at least one of its tautomeric structures corresponds to this general formula.

[0024] (1-1) An azo dye represented by the following general formula (i):

[0025]

[0026] In the above formula, R １７ and R １８ R each independently represents a hydrogen atom or a monovalent substituent. １９ represents a hydrogen atom, an aliphatic group, an aryl group, a heterocyclic group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an acyl group, an alkylsulfonyl group, an arylsulfonyl group, or a sulfamoyl group. Q represents a diazo component residue.

[0027] R １７ and R １８ Examples of the monovalent substituent that can be taken as the substituent include a halogen atom, an aliphatic group, an aryl group, a heterocyclic group, a cyano group, a carboxy group, a carbamoyl group, an aliphatic oxycarbonyl group, an aryloxycarbonyl group, an acyl group, a hydroxy group, an aliphatic oxy group, an aryloxy group, an acyloxy group, a carbamoyloxy group, a heterocyclic oxy group, an amino group (-NH ２ ), an aliphatic amino group, an arylamino group, a heterocyclic amino group, an acylamino group, a carbamoylamino group, a sulfamoylamino group, an aliphatic oxycarbonylamino group, an aryloxycarbonylamino group, an aliphatic sulfonylamino group, an arylsulfonylamino group, a nitro group, an aliphatic thio group, an arylthio group, an aliphatic sulfonyl group, an arylsulfonyl group, a sulfamoyl group, a sulfo group, an imido group, and a heterocyclic thio group. Among these, mainly from the viewpoint of imparting solubility, an aliphatic group, an aryl group, a heterocyclic group, a cyano group, a carbamoyl group, an aliphatic oxycarbonyl group, an aryloxycarbonyl group, an acyl group, an aliphatic oxy group, an aryloxy group, an aliphatic amino group, or an arylamino group is preferred. １７ and R １８ The substituents which may be taken as may be further substituted.

[0028] R １７ ~R １９The aliphatic group which can be taken as may further have a monovalent substituent, and may be saturated or unsaturated, or may be cyclic. Specific examples include alkyl groups, substituted alkyl groups, alkenyl groups, substituted alkenyl groups, alkynyl groups, substituted alkynyl groups, aralkyl groups, and substituted aralkyl groups. The total number of carbon atoms in the aliphatic group is preferably 1 to 30, and more preferably 1 to 16. Specific examples of the aliphatic group include a methyl group, an ethyl group, a butyl group, an isopropyl group, a t-butyl group, a hydroxyethyl group, a methoxyethyl group, a cyanoethyl group, a trifluoromethyl group, a 3-sulfopropyl group, a 4-sulfobutyl group, a 2-(2-hydroxyethoxy)ethyl group, a 2-(2-(acetyloxy)ethoxy)ethyl group, a cyclohexyl group, a benzyl group, a 2-phenethyl group, a vinyl group, and an allyl group. The monovalent substituent which may be taken as R １７ and R １８ The same applies to the following description of the monovalent substituent that may be possessed. Preferred examples of the monovalent substituent that may be possessed include an alkoxy group, an acyloxy group, and a hydroxy group. These substituents may further have a substituent, and preferred examples thereof include an alkoxy group, an acyloxy group, and a hydroxy group.

[0029] R １７ ~R １９ The aryl group which can be taken as may further have a monovalent substituent, and is preferably an aryl group having a total of 6 to 30 carbon atoms, more preferably an aryl group having a total of 6 to 16 carbon atoms. Specific examples include a phenyl group, a 4-tolyl group, a 4-methoxyphenyl group, a 2-chlorophenyl group, a 3-(3-sulfopropylamino)phenyl group, a 4-sulfamoylphenyl group, a 4-(ethoxyethylsulfamoyl)phenyl group, and a 3-(dimethylcarbamoyl)phenyl group.

[0030] R １７ ~R １９The heterocyclic group that can be taken as the heterocyclic group may be a saturated or unsaturated aliphatic ring group or an aromatic ring group, with an aromatic heterocyclic group being preferred. Examples of ring-constituting atoms that constitute the heterocyclic group include those containing at least one heteroatom such as a nitrogen atom, a sulfur atom, or an oxygen atom, and may further have a monovalent substituent. The heterocyclic group is preferably a heterocyclic group having a total of 1 to 30 carbon atoms, and more preferably a heterocyclic group having 1 to 15 carbon atoms. Specific examples include a 2-pyridyl group, a 2-thienyl group, a 2-thiazolyl group, a 2-benzothiazolyl group, a 2-benzoxazolyl group, and a 2-furyl group.

[0031] R １７ ~R １９ The carbamoyl group that can be taken as the ２ ), and also includes carbamoyl groups substituted with aliphatic groups, aryl groups, etc. １７ ~R １９ The carbamoyl group which can be taken as may further have a monovalent substituent, and is preferably a carbamoyl group having a total of 1 to 30 carbon atoms, more preferably a carbamoyl group having 1 to 16 carbon atoms. Specific examples include a methylcarbamoyl group, a dimethylcarbamoyl group, a phenylcarbamoyl group, and an N-methyl-N-phenylcarbamoyl group.

[0032] R １７ and R １８ The aliphatic group in the aliphatic oxycarbonyl group that can be taken as R １７ ~R １９ The description of the aliphatic groups that can be taken as R １７ and R １８ The aliphatic oxycarbonyl group which can be taken as R may further have a monovalent substituent, may be saturated or unsaturated, or may be cyclic, and is preferably an aliphatic oxycarbonyl group having a total of 2 to 30 carbon atoms, more preferably an aliphatic oxycarbonyl group having a total of 2 to 16 carbon atoms. Specific examples include a methoxycarbonyl group, an ethoxycarbonyl group, and a 2-methoxyethoxycarbonyl group. １９The alkoxycarbonyl group which can be taken as may further have a monovalent substituent, may be saturated or unsaturated, may be cyclic, and is preferably an alkoxycarbonyl group having a total of 2 to 30 carbon atoms, more preferably an alkoxycarbonyl group having a total of 2 to 16 carbon atoms. Specific examples include a methoxycarbonyl group, an ethoxycarbonyl group, and a 2-methoxyethoxycarbonyl group.

[0033] R １７ ~R １９ The aryloxycarbonyl group represented by the formula (I) may further have a monovalent substituent, and is preferably an aryloxycarbonyl group having a total of 7 to 30 carbon atoms, more preferably an aryloxycarbonyl group having 7 to 16 carbon atoms. Specific examples include a phenoxycarbonyl group, a 4-methylphenoxycarbonyl group, and a 3-chlorophenoxycarbonyl group.

[0034] R １７ ~R １９ The acyl group that can be taken as (III) includes an aliphatic carbonyl group, an arylcarbonyl group, and a heterocyclic carbonyl group, and preferably has a total of 1 to 30 carbon atoms, more preferably has a total of 1 to 16 carbon atoms. Specific examples include an acetyl group, a methoxyacetyl group, a thienoyl group, and a benzoyl group.

[0035] R １７ and R １８ The aliphatic group in the aliphatic sulfonyl group that can be taken as R １７ ~R １９ The description of the aliphatic groups that can be taken as R １７ and R １８ The aliphatic sulfonyl group which can be taken as R may further have a monovalent substituent, may be saturated or unsaturated, may be cyclic, and preferably has a total of 1 to 30 carbon atoms, more preferably 1 to 16 carbon atoms. Specific examples include a methanesulfonyl group, a methoxymethanesulfonyl group, and an ethoxyethanesulfonyl group. １９The alkylsulfonyl group which can be taken as may further have a monovalent substituent, may be saturated or unsaturated, may be cyclic, and preferably has a total of 1 to 30 carbon atoms, more preferably 1 to 16. Specific examples include a methanesulfonyl group, a methoxymethanesulfonyl group, and an ethoxyethanesulfonyl group.

[0036] R １７ ~R １９ The arylsulfonyl group which can be taken as may further have a monovalent substituent, and preferably has a total of 6 to 30 carbon atoms, more preferably 6 to 18 carbon atoms. Specific examples include a benzenesulfonyl group and a toluenesulfonyl group.

[0037] R １７ ~R １９ The sulfamoyl group that can be taken as the ２ NH ２ ), and also sulfamoyl groups substituted with aliphatic groups, aryl groups, etc. １７ ~R １９ The sulfamoyl group which can be taken as may further have a monovalent substituent, and preferably has a total of 0 to 30 carbon atoms, more preferably 0 to 16 carbon atoms. Specific examples include an unsubstituted sulfamoyl group, a dimethylsulfamoyl group, and a di-(2-hydroxyethyl)sulfamoyl group.

[0038] R １７ and R １８ The imido group may further have a monovalent substituent, and is preferably a 5- or 6-membered ring imido group. The imido group preferably has a total of 4 to 30 carbon atoms, more preferably 4 to 20 carbon atoms. Specific examples include a succinimide group and a phthalimide group.

[0039] R １７ and R １８ The aliphatic groups in the aliphatic oxy group, aliphatic amino group, aliphatic oxycarbonylamino group, aliphatic sulfonylamino group and aliphatic thio group that can be taken as R １７ ~R１９ The description of the aliphatic groups that can be taken as R １７ and R １８ The aryl group in the aryloxy group, arylamino group, aryloxycarbonylamino group, arylsulfonylamino group and arylthio group that can be taken as R １７ ~R １９ The description of the aryl group that can be taken as R can be applied. １７ and R １８ The acyl group in the acyloxy group and acylamino group that can be taken as R １７ ~R １９ The description of the acyl group that can be taken as R １７ and R １８ The carbamoyl group in the carbamoyloxy group and carbamoylamino group that can be taken as R １７ ~R １９ The description of the carbamoyl group that can be taken as R １７ and R １８ The heterocyclic group in the heterocyclic oxy group, heterocyclic amino group and heterocyclic thio group that can be taken as R １７ ~R １９ The description of the heterocyclic group that can be taken as R can be applied. １７ and R １８ The sulfamoyl group in the sulfamoylamino group that can be taken as R １７ ~R １９ The description of the sulfamoyl group that can be taken as the above can be applied.

[0040] The diazo component residue represented by Q is the diazo component "Q-NH ２". In particular, from the viewpoint of adjusting the target color of reflected light to a more neutral tone, Q is preferably an aryl group or an aromatic heterocyclic group. The aromatic hydrocarbon ring constituting the aryl group that can be taken as Q may be a monocyclic or fused ring, and is preferably a monocyclic ring. An aryl group having a total of 6 to 30 carbon atoms is preferred, and an aryl group having a total of 6 to 16 carbon atoms is more preferred. Specifically, a phenyl group is preferred. The aryl group that can be taken as Q may have a substituent, and preferred examples of the substituent that may be taken as Q include a sulfamoyl group (preferably an alkylsulfamoyl group or a dialkylsulfamoyl group), a sulfonyl group (preferably an alkylsulfonyl group), and a cyano group.

[0041] The aromatic heterocyclic group that can be taken as Q is preferably an aromatic ring group containing at least one heteroatom such as a nitrogen atom, a sulfur atom, or an oxygen atom as a ring-constituting atom constituting the heterocyclic group, and is preferably constituted by a 5- or 6-membered ring. The number of carbon atoms in the aromatic heterocyclic group is preferably 1 to 25, more preferably 1 to 15. The aromatic heterocycle constituting the aromatic heterocyclic group may be a monocycle or a condensed ring, and is preferably a monocycle. Specific examples of the aromatic heterocyclic group include a pyrazole group, a 1,2,4-triazole group, an isothiazole group, a benzisothiazole group, a thiazole group, a benzothiazole group, an oxazole group, and a 1,2,4-thiadiazole group.

[0042] As examples of the azo dye represented by the general formula (i), for example, the specific examples of the azo dye represented by the general formula (i) described in paragraph

[0042] of WO 2023 / 234353 can be applied as they are, although the present invention is not limited thereto.

[0043] (1-2) An azo dye represented by the following general formula (ii):

[0044]

[0045] In the above formula, R ２１ ~R ２４ , R ２６ and R ２７represents a hydrogen atom, a halogen atom, a cyano group, a nitro group, a carboxy group, a sulfo group, -OR １０８ , -SR １０９ , -NR １１０ R １１１ , -S(=O) ２ NR １１２ R １１３ , —C(═O)NR １１４ R １１５ , -NHC(=O)R １１６ , -C(=O)OR １１７ , -O(CH ２ CH ２ O) ｎ R １１８ , -O(CH ２ CH ２ S) ｎ R １１９ , -S(CH ２ CH ２ O) ｎ R １２０ , -S(CH ２ CH ２ S) ｎ R １２１ , acyclic hydrocarbon group, monocyclic hydrocarbon group, condensed polycyclic hydrocarbon group, or heterocyclic group. １０８ ~R １２１ represents a hydrogen atom, an acyclic hydrocarbon group, a monocyclic hydrocarbon group, a condensed polycyclic hydrocarbon group, or a heterocyclic group. n is a positive integer. The acyclic hydrocarbon group, the monocyclic hydrocarbon group, the condensed polycyclic hydrocarbon group, and the heterocyclic group may each be a halogen atom, a cyano group, a nitro group, a carboxy group, a sulfo group, an -OR １０８ , -SR １０９ , -NR １１０ R １１１ , -S(=O) ２ NR １１２ R １１３ , —C(═O)NR １１４ R １１５ , -NHC(=O)R １１６ , -C(=O)OR １１７ , -O(CH ２ CH ２ O) ｎ R １１８ , -O(CH ２ CH ２ S) ｎ R １１９, -S(CH ２ CH ２ O) ｎ R １２０ , -S(CH ２ CH ２ S) ｎ R １２１ The aryl group may have one or more substituents selected from the group consisting of acyclic hydrocarbon groups, monocyclic hydrocarbon groups, condensed polycyclic hydrocarbon groups, and heterocyclic groups.

[0046] R ２１ ~R ２４ , R ２６ , R ２７ and R １０８ ~R １２１ The acyclic hydrocarbon group that can be taken as R means an acyclic alkyl group in which one hydrogen atom has been removed from an acyclic alkane. However, the acyclic alkyl group may have a ring structure as a substituent. The number of carbon atoms in the acyclic alkyl group is preferably 1 to 30, more preferably 1 to 20, even more preferably 1 to 12, particularly preferably 1 to 8, and of these, 1 to 6 is preferred. ２１ ~R ２４ , R ２６ , R ２７ and R １０８ ~R １２１ The monocyclic hydrocarbon group that can be taken as R means a monocyclic cycloalkyl group, a monocyclic cycloalkenyl group, a monocyclic cycloalkynyl group, or a monocyclic aryl group, which is a group in which one hydrogen atom has been removed from a monocyclic aliphatic hydrocarbon ring (which may be a monocyclic cycloalkane, a monocyclic cycloalkene, or a monocyclic cycloalkyne) or a monocyclic aromatic hydrocarbon ring. The number of carbon atoms in the monocyclic cycloalkyl group, the monocyclic cycloalkenyl group, and the monocyclic cycloalkynyl group is not particularly limited as long as it is structurally possible, but is more preferably 3 to 30, more preferably 3 to 20, and even more preferably 3 to 16. The number of carbon atoms in the monocyclic aryl group is more preferably 6 to 30, more preferably 6 to 20, and particularly preferably 6 to 16. R ２１ ~R ２４ , R ２６ , R ２７ and R １０８ ~R １２１The fused polycyclic hydrocarbon group that can be taken as R means a fused polycyclic cycloalkyl group, a fused polycyclic cycloalkenyl group, a fused polycyclic cycloalkynyl group, or a fused polycyclic aryl group, which is a group in which one hydrogen atom has been removed from a fused polycyclic aliphatic hydrocarbon ring (which may be a fused polycyclic cycloalkane, a fused polycyclic cycloalkene, or a fused polycyclic cycloalkyne) or a fused polycyclic aromatic hydrocarbon ring. The number of carbon atoms in the fused polycyclic cycloalkyl group, the fused polycyclic cycloalkenyl group, and the fused polycyclic cycloalkynyl group is not particularly limited as long as it is structurally possible, but is more preferably 8 to 30, and more preferably 8 to 20. The number of carbon atoms in the fused polycyclic aryl group is more preferably 10 to 30, and more preferably 10 to 20. R ２１ ~R ２４ , R ２６ , R ２７ and R １０８ ~R １２１ The heterocyclic group that can be used as the heterocyclic group is R １７ ~R １９ The description of the heterocyclic group that can be taken as: can be applied. n is preferably an integer of 1 to 12, more preferably an integer of 1 to 6, and even more preferably an integer of 1 to 3.

[0047] Specific groups of each substituent in the general formula (ii) are the same as those of R for the compound represented by the general formula [1] described in JP-A-5-257180, unless otherwise specified. １ ~R ４ , R ６ , R ７ , R ８ ~R ２１ The descriptions regarding R ２１ ~R ２４ , R ２６ , R ２７ , R １０８ ~R １２１ can be applied as is.

[0048] R ２１ represents a cyano group, a nitro group, -OR １０８, an acyclic hydrocarbon group (preferably an acyclic alkyl group or an acyclic alkenyl group) or a heterocyclic group is preferred, a cyano group or a nitro group, or an acyclic alkyl group substituted with a halogen atom (preferably an alkyl group substituted with a fluorine atom) is more preferred, and a cyano group is even more preferred. ２２ is preferably a hydrogen atom, a cyano group, an acyclic hydrocarbon group (preferably an acyclic alkyl group) or a monocyclic hydrocarbon group, more preferably a hydrogen atom, an alkyl group or an aryl group, and even more preferably an alkyl group or an aryl group. ２１ and R ２２ At least one of R is preferably a cyano group or a nitro group, or an acyclic alkyl group substituted with a halogen atom, a cyano group, or a nitro group. ２３ represents a hydrogen atom, -OR １０８ , -SR １０９ , -NR １１０ R １１１ , —C(═O)NR １１４ R １１５ , -NHC(=O)R １１６ , -O(CH ２ CH ２ O) ｎ R １１８ , -O(CH ２ CH ２ S) ｎ R １１９ , -S(CH ２ CH ２ O) ｎ R １２０ , -S(CH ２ CH ２ S) ｎ R １２１ or a non-cyclic hydrocarbon group (preferably a non-cyclic alkyl group), and a hydrogen atom, -OR １０８ , -SR １０９ , -NR １１０ R １１１ , -NHC(=O)R １１６ or acyclic alkyl groups are more preferred, -NHC(=O)R １１６ More preferably, R １０８ ~R １１１ , R １１６ , R １１８ ~R １２１is preferably an acyclic alkyl group. ２４ and R ２７ is preferably a hydrogen atom. ２６ represents a hydrogen atom, -OR １０８ , -SR １０９ , -NR １１０ R １１１ , -NHC(=O)R １１６ , -O(CH ２ CH ２ O) ｎ R １１８ , -O(CH ２ CH ２ S) ｎ R １１９ , -S(CH ２ CH ２ O) ｎ R １２０ , -S(CH ２ CH ２ S) ｎ R １２１ or a non-cyclic hydrocarbon group (preferably a non-cyclic alkyl group), and a hydrogen atom, -OR １０８ or -SR １０９ is more preferred, and a hydrogen atom is even more preferred. １０８ ~R １１１ , R １１６ , R １１８ ~R １２１ is preferably an acyclic alkyl group. ２４ and R ２６ -NR located at the ortho position relative to １１０ R １１１ In this case, R １１０ is preferably an acyclic alkyl group, and R １１１ is preferably an acyclic alkyl group, and is preferably an unsubstituted acyclic alkyl group or —OR １０８ , a non-cyclic alkyl group having a monocyclic hydrocarbon group or a condensed polycyclic hydrocarbon group as a substituent is more preferred. １０８ is preferably a hydrogen atom or an acyclic alkyl group.

[0049] Specific examples of the dye represented by general formula (ii) include the compounds used in the examples described later, as well as the compounds described in paragraphs

[0023] to

[0034] of JP-A No. 5-257180, and the compounds described in paragraphs

[0050] and

[0052] of JP-A No. 2013-129712, compound D-18 described in paragraph

[0055] , and the compound described in paragraph

[0056] . However, the present invention is not limited to these.

[0050] (1-3) An azo dye represented by the following general formula (iii):

[0051]

[0052] In the above formula, R ３１ represents a hydrogen atom, an alkyl group, an alkoxy group, a cyano group, a carbonyl group (preferably an alkyloxycarbonyl group or an aryloxycarbonyl group), an aromatic group, or a heterocyclic group. ３２ represents a hydrogen atom, an alkyl group, an alkoxy group, a cyano group, a nitro group, a carbonyl group (preferably an alkyloxycarbonyl group or an aryloxycarbonyl group), an aromatic group, or a heterocyclic group. ３４ and R ３５ R each independently represents a hydrogen atom, an alkyl group, or an aromatic group. ３７ represents a hydrogen atom, an alkyl group, an alkoxy group, a cyano group, a carbonyl group (preferably an alkyloxycarbonyl group or an aryloxycarbonyl group), an acylamino group, or an aromatic group. ３４ and R ３５ may be bonded to each other to form a ring.

[0053] The definition and preferred range of each substituent in the general formula (iii) are the same as those of R in the general formula (1) described in JP-A-2013-129712, unless otherwise specified. １ and R ２ The descriptions regarding R ３１ and R ３２ R relating to general formula (3) described in JP-A-2013-129712 ４ , R ５ and R ７ The descriptions regarding R ３４ , R３５ and R ３７ In the present invention, R ３７ R in the general formula (3) described in JP-A-2013-129712 ７ In addition to the hydrogen atom, alkyl group, alkoxy group, cyano group, carbonyl group and aromatic group that R can take, it can also take the following acylamino group: ３７ The number of carbon atoms in the acylamino group that can be taken as R is preferably 1 to 12, more preferably 1 to 6. ３１ , R ３２ and R ３７ The number of carbon atoms in the alkyl group that can be taken as R is more preferably 1 to 20, further preferably 1 to 12, and particularly preferably 1 to 6. ３１ , R ３２ and R ３７ The number of carbon atoms in the alkoxy group that can be taken as R is more preferably 1 to 20, further preferably 1 to 12, and particularly preferably 1 to 6. ３１ , R ３２ and R ３７ The number of carbon atoms in the alkyloxycarbonyl group that can be taken as R is preferably 2 to 30, more preferably 2 to 20, still more preferably 2 to 12, and particularly preferably 2 to 7. ３４ and R ３５ The alkyl group that can be taken as the alkyl group preferably has 1 to 30 carbon atoms, more preferably 1 to 20 carbon atoms, and even more preferably 1 to 12 carbon atoms.

[0054] R ３１ is preferably an alkyl group or an aryl group, more preferably an alkyl group. ３２ is preferably an alkyl group or a cyano group, more preferably a cyano group. ３４ and R ３５ is preferably a hydrogen atom or an alkyl group, more preferably an alkyl group. ３７ is preferably a hydrogen atom, an alkyl group, an acylamino group or an aromatic group, more preferably a hydrogen atom or an alkyl group, and even more preferably an alkyl group.

[0055] Specific examples of the dye represented by general formula (iii) include the specific examples of the azo dye represented by general formula (iii) described in paragraphs

[0056] to

[0058] of WO 2023 / 234353. However, the present invention is not limited thereto.

[0056] (1-4) An azo dye represented by the following general formula (iv):

[0057]

[0058] In the above formula, R ４１ ~R ４４ , R ４６ and R ４７ represents a hydrogen atom, a halogen atom, a cyano group, a nitro group, a carboxy group, a sulfo group, -OR ２０８ , -SR ２０９ , -NR ２１０ R ２１１ , -S(=O) ２ NR ２１２ R ２１３ , —C(═O)NR ２１４ R ２１５ , -NHC(=O)R ２１６ , -C(=O)OR ２１７ , -O(CH ２ CH ２ O) ｎ R ２１８ , -O(CH ２ CH ２ S) ｎ R ２１９ , -S(CH ２ CH ２ O) ｎ R ２２０ , -S(CH ２ CH ２ S) ｎ R ２２１ , acyclic hydrocarbon group, monocyclic hydrocarbon group, condensed polycyclic hydrocarbon group, or heterocyclic group. ２０８ ~R ２２１ represents a hydrogen atom, an acyclic hydrocarbon group, a monocyclic hydrocarbon group, a condensed polycyclic hydrocarbon group, or a heterocyclic group. n is a positive integer. The acyclic hydrocarbon group, the monocyclic hydrocarbon group, the condensed polycyclic hydrocarbon group, and the heterocyclic group may each be a halogen atom, a cyano group, a nitro group, a carboxy group, a sulfo group, an -OR２０８ , -SR ２０９ , -NR ２１０ R ２１１ , -S(=O) ２ NR ２１２ R ２１３ , —C(═O)NR ２１４ R ２１５ , -NHC(=O)R ２１６ , -C(=O)OR ２１７ , -O(CH ２ CH ２ O) ｎ R ２１８ , -O(CH ２ CH ２ S) ｎ R ２１９ , -S(CH ２ CH ２ O) ｎ R ２２０ and -S(CH ２ CH ２ S) ｎ R ２２１ may have one or more of the following as substituents.

[0059] R in general formula (iv) ４１ ~R ４４ , R ４６ , R ４７ , R ２０８ ~R ２２１ and n are the same as R in the general formula (ii) above unless otherwise specified. ２１ ~R ２４ , R ２６ , R ２７ , R １０８ ~R １２１ The descriptions of R and n can be applied as they are. ４３ represents a hydrogen atom, -OR ２０８ , -SR ２０９ , -NR ２１０ R ２１１ , -NHC(=O)R ２１６ , -O(CH ２ CH ２ O) ｎ R ２１８ , -O(CH ２ CH ２ S) ｎ R ２１９ , -S(CH２ CH ２ O) ｎ R ２２０ , -S(CH ２ CH ２ S) ｎ R ２２１ or a non-cyclic hydrocarbon group (preferably a non-cyclic alkyl group), and a hydrogen atom, -OR ２０８ , -SR ２０９ , -NR ２１０ R ２１１ , -NHC(=O)R ２１６ or acyclic alkyl groups are more preferred, -NHC(=O)R ２１６ or acyclic alkyl group is more preferred. ２０８ ~R ２１１ , R ２１６ , R ２１８ ~R ２２１ is preferably an acyclic alkyl group. ４４ and R ４６ -NR located at the ortho position relative to ２１０ R ２１１ In this case, R ２１０ is preferably an acyclic alkyl group, and R ２１１ is preferably an acyclic alkyl group, and is preferably an unsubstituted acyclic alkyl group (including an acyclic alkyl group substituted with an acyclic alkyl group), or -OR ２０８ , a non-cyclic alkyl group having a monocyclic hydrocarbon group or a condensed polycyclic hydrocarbon group as a substituent is more preferred. ２０８ is preferably a hydrogen atom or an acyclic alkyl group. ４４ and / or R ４６ is R on the benzene ring ４４ and R ４６ -NR located at the ortho position relative to ２１０ R ２１１ R in ２１０ and / or R ２１１ and may be bonded to form a ring. The ring that may be formed is preferably a 5- or 6-membered ring, and may be saturated or unsaturated, and is preferably a saturated 6-membered ring. The ring that may be formed may further have a substituent, and preferably has, for example, an alkyl group. Among these, as a form of forming a ring, R ４６and R on the benzene ring ４４ and R ４６ -NR located at the ortho position relative to ２１０ R ２１１ R in ２１１ and preferably combine to form a saturated six-membered ring.

[0060] Specific examples of the dye represented by general formula (iv) include the compounds used in the examples described later and the compounds described in paragraph

[0053] of JP-A-2013-129712, although the present invention is not limited thereto.

[0061] (1-5) Indoaniline dyes represented by the following general formula (v):

[0062]

[0063] In the above formula, Q １ represents a group of atoms necessary to form a 5- to 7-membered nitrogen-containing heterocyclic ring together with the carbon atom to which it is attached, including at least one nitrogen atom. ５１ represents an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an aminocarbonyl group, or a sulfonyl group; R ５２ represents a hydrogen atom or an alkyl group, and R ５３ ~R ５７ represents a hydrogen atom, an alkyl group, an alkoxy group, an acylamino group, an alkylsulfonylamino group, or a halogen atom; R ５８ and R ５９ represents a hydrogen atom, an alkyl group, or an aryl group. ５１ and R ５３ But, R ５４ and R ５５ and / or R ５５ and R ５９ But, or R ５８ and R ５９ may be bonded to each other to form a ring. ５１ and R ５３ may be bonded to each other to form a ring, and R ５４ and R ５５ and / or R ５５ and R ５９ may be bonded to each other to form a ring, or R５８ and R ５９ may be bonded to each other to form a ring.

[0064] The definition and preferred range of each substituent in the general formula (v) are the same as those of R relating to the general formula (I) described in JP-A-2-92686, unless otherwise specified. １ ~R ６ , R ８ , R ９ and Q １ The descriptions regarding R ５１ ~R ５６ , R ５８ , R ５９ and Q １ In the present invention, R ５３ ~R ５６ R in the general formula (I) described in JP-A-2-92686 ３ ~R ６ In addition to the hydrogen atom, alkyl group, alkoxy group, and halogen atom that R can take, R can take the following acylamino group and alkylsulfonylamino group. ５３ ~R ５７ The number of carbon atoms in the acylamino group that can be taken as R is preferably 1 to 12, and more preferably 1 to 6. ５３ ~R ５７ The number of carbon atoms in the alkylsulfonylamino group that can be taken as R is preferably 1 to 12, and more preferably 1 to 6. ５７ The alkyl group, alkoxy group and halogen atom that can be taken as R ５３ ~R ５６ The descriptions of the alkyl group, alkoxy group and halogen atom that can be taken as the alkyl group, alkoxy group and halogen atom can be applied as they are.

[0065] Q １ is preferably —NR １６ C(=O)-Q ２ It is expressed as -. ２ is -NR １６ C(=O)-Q ２ The carbon atom to which - is bonded and -NR １６R represents a group of atoms necessary to form a 5- to 7-membered nitrogen-containing heterocycle together with C(═O)—, and examples thereof include a divalent amino group, an ether bond, a thioether bond, an alkylene bond, an ethylene bond, an imino bond, a sulfonyl bond, a carbonyl bond, an arylene bond, or a divalent heterocyclic group, or a group formed by combining two or more of these. １６ represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, and preferably a hydrogen atom. １６ The definition and preferred range of each substituent of R in general formula (I) described in JP-A-2-92686 are also the same as those described in １６ The descriptions regarding R can be applied as they are. ５１ is preferably an acyl group having 2 to 7 carbon atoms or an alkoxycarbonyl group having 2 to 7 carbon atoms. ５２ is preferably a hydrogen atom, and R ５３ ~R ５６ is preferably a hydrogen atom. ５７ is preferably an alkoxy group, an acylamino group, or an alkylsulfonylamino group, and more preferably an alkoxy group or an acylamino group. ５８ and R ５９ is preferably an alkyl group having 1 to 6 carbon atoms.

[0066] In particular, the indoaniline dye represented by the above general formula (v) is preferably represented by the following general formula (va):

[0067]

[0068] In the above formula, R ５１ , R ５３ , R ５７ ~R ５９ and Q ２ is R in the above general formula (v). ５１ , R ５３ , R ５７ ~R ５９ and Q ２ It is synonymous with: ２ is -CR １１ R １２ CR １３ R １４ -, -CR １１ R １２ -or-NR １１- is preferred, and -CR １１ R １２ CR １３ R １４ - is more preferred. １１ ~R １４ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R １１ and R １２ is a hydrogen atom, and R １３ and R １４ is preferably an alkyl group having 1 to 4 carbon atoms. １１ R １２ CR １３ R １４ - is R １１ and R １２ is preferably bonded to >C=O on the side of the carbon atom to which it is bonded.

[0069] Specific examples of the dye represented by formula (v) include the compounds used in the examples described later, as well as compounds No. 1 to 51 described on pages 5 and 6 of JP-A No. 2-92686, although the present invention is not limited to these.

[0070] The total content of the dyes in the light-absorbing and disappearing layer is preferably 0.10% by weight or more, more preferably 0.15% by weight or more, even more preferably 0.20% by weight or more, particularly preferably 0.25% by weight or more, and especially preferably 0.30% by weight or more. When the total content of the dyes in the light-absorbing and disappearing layer is equal to or greater than the above-mentioned preferable lower limit, good light absorption properties such as anti-reflection effect can be obtained. Furthermore, the total content of the dyes in the light-absorbing and disappearing layer is usually 50% by weight or less, preferably 40% by weight or less, more preferably 30% by weight or less, even more preferably 15% by weight or less, and especially preferably 10% by weight or less. That is, the total content of the dyes in the light-absorbing and disappearing layer is preferably 0.10 to 50% by weight, more preferably 0.15 to 40% by weight, even more preferably 0.20 to 30% by weight, particularly preferably 0.25 to 15% by weight, and especially preferably 0.30 to 10% by weight.

[0071] The content of the azo dye represented by formula (i) in the light-absorbing and disappearing layer is preferably 0.01 to 30% by mass, more preferably 0.1 to 10% by mass. Similarly to the content of the azo dye represented by formula (i), the content of each of the azo dye represented by formula (ii), the azo dye represented by formula (iii), the azo dye represented by formula (iv), and the indoaniline dye represented by formula (v) in the light-absorbing and disappearing layer is preferably 0.01 to 30% by mass, more preferably 0.1 to 10% by mass. Note that all of the dyes in the light-absorbing and disappearing layer may be at least one of the azo dye represented by any one of formulas (i) to (iv) and the indoaniline dye represented by formula (v).

[0072] <Compound that generates radicals upon irradiation with ultraviolet rays> The light-absorbing and dissipative layer contains a compound that generates radicals upon irradiation with ultraviolet rays (also simply referred to as a "radical generator" in the present invention.) The radical generator is not particularly limited as long as it is a compound that generates radicals upon irradiation with ultraviolet rays and has the function of decolorizing the dye. For example, a photoradical generator that may be used in combination with compound B described below can be used as the radical generator.

[0073] The radical generator may be a combination of two or more compounds, preferably two or more of which interact with each other in the light-absorbing and dissipating layer, for example, to form a complex, thereby generating radicals upon UV irradiation. The types of compounds to be combined may be two or more compounds exhibiting different functions in the mechanism of generating radicals upon UV irradiation, preferably two types. A preferred example of such a combination is a combination of compound A having an acid group and compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A. When the light-absorbing and dissipating layer contains compound A having an acid group and compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A, the efficiency of generating radical species upon UV irradiation is improved compared to when the photoradical generator is used. Therefore, even when UV irradiation is performed under mild temperature conditions, such as room temperature, sufficient radical species are generated, and these radical species react directly or indirectly with the dye, causing the dye to decompose, resulting in fading and decolorization of the dye. In particular, the azo dye represented by any one of the above general formulas (i) to (iv), the indoaniline dye represented by the above general formula (v), and the squaraine dye represented by the below-mentioned general formula (1), which can be contained in the light-absorbing and dissipating layer, are discolored with almost no secondary absorption due to decomposition of the dye. Compound A having an acid group and compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A will be described in detail below.

[0074] (1) Compound A Having an Acid Group The light-absorbing and dissipating layer preferably contains, as the radical generator, Compound A having an acid group (also simply referred to as "Compound A" in the present invention), together with Compound B having a structure capable of forming a hydrogen bond with the acid group contained in Compound A, which will be described later. The acid group contained in Compound A is preferably a proton-dissociating group having a pKa of 12 or less. Specific examples of the acid group include a carboxy group, a sulfonamide group, and a phosphonic acid group (-P(=O)(OH) ２ ), phosphate group (-OP(=O)(OH) ２Examples of the pKa include a sulfo group, a phenolic hydroxyl group, and a sulfonylimide group, with a carboxy group being preferred. The pKa refers to the negative common logarithm (-logKa) of the acid dissociation constant (Ka) in water at 25°C, and can be calculated in the same manner as in the pKa of Compound B described below, except that the 50 / 50 (volume ratio) water / methanol mixed solvent is replaced with water. Compound A may be a low-molecular-weight compound or a high-molecular-weight compound (hereinafter also referred to as a "polymer"), and is preferably a polymer. Compound A being a polymer means that Compound A is chemically bonded to a polymer constituting the resin contained in the light-absorbing and dissipating layer. When Compound A is a low-molecular-weight compound, the molecular weight of Compound A is less than 5,000, preferably 2,000 or less, more preferably 1,000 or less, even more preferably 500 or less, and particularly preferably 400 or less. There is no particular restriction on the lower limit, but a value of 100 or more is practical, and 200 or more is preferred. That is, a molecular weight of 100 or more but less than 5,000 is practical, with 200 to 2,000 being preferred, 200 to 1,000 being more preferred, 200 to 500 being even more preferred, and 200 to 400 being particularly preferred. When compound A is a polymer, the lower limit of the weight-average molecular weight of compound A is 5,000 or more, and from the viewpoint of the physical properties of the optical filter, 10,000 or more is preferred, and 15,000 or more is more preferred. The upper limit is not particularly limited, but from the viewpoint of solubility in solvents, 500,000 or less is preferred, 200,000 or less is more preferred, and 150,000 or less is even more preferred. That is, a molecular weight of 5,000 to 500,000 is practical and preferred, 10,000 to 200,000 is more preferred, and 15,000 to 150,000 is more preferred.

[0075] Furthermore, some or all of the acid groups contained in compound A may or may not be anionized in the light-absorbing and dissipating layer that constitutes the light-absorbing filter, and in the present invention, both anionized and non-anionized acid groups are referred to as acid groups. In other words, compound A may or may not be anionized in the light-absorbing and dissipating layer that constitutes the light-absorbing filter.

[0076] From the viewpoint of excellent film-forming properties of the light-absorption-disappearing layer, the compound A is preferably a compound having a carboxy group. The compound having a carboxy group is preferably a monomer containing a carboxy group (hereinafter also referred to as a "carboxy group-containing monomer") or a polymer containing a carboxy group (hereinafter also referred to as a "carboxy group-containing polymer"), and from the viewpoint of film-forming properties of the light-absorption-disappearing layer, it is more preferably a carboxy group-containing polymer.

[0077] In addition, a part or all of the carboxyl groups (—COOH) of the carboxyl group-containing monomer and the carboxyl group-containing polymer may or may not be anionized in the light-absorbing filter, and the anionized carboxyl groups (—COOH － In other words, the carboxy group-containing polymer may be anionized or not in the light-absorbing and dissipating layer that constitutes the light-absorbing filter, and the carboxy group-containing polymer may be anionized or not, and both the anionized carboxy group-containing polymer and the non-anionized carboxy group-containing polymer are referred to as the carboxy group-containing polymer.

[0078] The content of compound A in the light-absorbing and dissipating layer is preferably 1% by mass or more, more preferably 25% by mass or more, even more preferably 30% by mass or more, particularly preferably 45% by mass or more, and especially preferably 50% by mass or more. The upper limit of the content of compound A is preferably less than 100% by mass, more preferably 99% by mass or less, and even more preferably 97% by mass or less. That is, it is preferably 1% by mass or more but less than 100% by mass, more preferably 25 to 99% by mass, even more preferably 30 to 97% by mass, particularly preferably 45 to 97% by mass, and especially preferably 50 to 97% by mass. In particular, when compound A is a polymer, the content of compound A in the light-absorbing and dissipating layer is preferably 50% by mass or more but less than 100% by mass, more preferably 60% by mass or more but less than 100% by mass, and even more preferably 70% by mass or more but less than 100% by mass. The upper limit is preferably 99% by mass or less, more preferably 97% by mass or less, even more preferably 95% by mass or less, and particularly preferably 90% by mass or less. Compound A may be used alone or in combination of two or more types.

[0079] (Carboxy Group-Containing Monomer) Examples of the carboxy group-containing monomer include polymerizable compounds containing a carboxy group and one or more (e.g., 1 to 15) ethylenically unsaturated groups. Examples of the ethylenically unsaturated group include a (meth)acryloyl group, a vinyl group, and a styryl group, with a (meth)acryloyl group being preferred. When the ethylenically unsaturated group is a (meth)acryloyl group, the carbonyl bond in the (meth)acryloyl group and the carbonyl bond in the carboxy group may share one carbonyl bond. From the viewpoint of superior film-forming properties, the carboxy group-containing monomer is preferably a bifunctional or higher functional monomer containing a carboxy group. Note that a bifunctional or higher functional monomer refers to a polymerizable compound having two or more (e.g., 2 to 15) ethylenically unsaturated groups in one molecule. The number of carboxy groups contained in the carboxy group-containing monomer may be one or more, for example, preferably 1 to 8, more preferably 1 to 4, and even more preferably 1 to 2. The carboxyl group-containing monomer may further have an acid group other than a carboxyl group, such as a phenolic hydroxyl group, a phosphoric acid group, or a sulfonic acid group.

[0080] The difunctional or higher functional monomer containing a carboxy group is not particularly limited and can be appropriately selected from known compounds. Examples of the difunctional or higher functional monomer containing a carboxy group include trade names Aronix M-520 and Aronix M-510 (both manufactured by Toagosei Co., Ltd.).

[0081] Examples of trifunctional or higher functional monomers containing a carboxy group include tri- to tetrafunctional polymerizable compounds having a carboxy group (compounds having a carboxy group introduced into a pentaerythritol triacrylate and pentaerythritol tetraacrylate [PETA] skeleton (acid value = 80 to 120 mg KOH / g)), and penta- to hexafunctional polymerizable compounds having a carboxy group (compounds having a carboxy group introduced into a dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate [DPHA] skeleton (acid value = 25 to 70 mg KOH / g)). When using the above-mentioned trifunctional or higher functional monomers containing a carboxy group, it is also preferable to use a bifunctional or higher functional monomer containing a carboxy group in combination, from the viewpoint of better film-forming properties.

[0082] Examples of the difunctional or higher functional monomer containing a carboxy group and the difunctional or higher functional monomer containing an acid group include the polymerizable compounds having an acid group described in paragraphs 0025 to 0030 of JP-A No. 2004-239942, the contents of which are incorporated herein by reference.

[0083] (Carboxy group-containing polymer) The carboxy group-containing polymer may further have an acid group other than a carboxy group as the acid group. Examples of the acid group other than a carboxy group include a phenolic hydroxyl group, a phosphoric acid group, and a sulfonic acid group. When the carboxy group-containing polymer is a copolymer, the polymer structure may be a random polymer or a regular polymer such as a block polymer.

[0084] <<Constituent Unit Having Carboxy Group>> The carboxyl group-containing polymer preferably has a constituent unit having a carboxyl group. Examples of the constituent unit having a carboxyl group include constituent units derived from (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid, or fumaric acid. Among these, constituent units derived from (meth)acrylic acid are preferred because of their excellent decolorization properties.

[0085] The content of the structural unit having a carboxy group in the carboxy group-containing polymer is preferably 1 to 100 mol%, more preferably 3 to 65 mol%, even more preferably 5 to 60 mol%, particularly preferably 10 to 60 mol%, and of these, preferably 20 to 55 mol%, when the total of all structural units of the carboxy group-containing polymer is 100 mol%. The structural unit having a carboxy group may be used alone or in combination of two or more types.

[0086] <Constituent Unit Having Aromatic Ring> In addition to the above-mentioned constituent units, the carboxyl group-containing polymer also preferably has a constituent unit having an aromatic ring (preferably an aromatic hydrocarbon ring). For example, a constituent unit derived from a (meth)acrylate having an aromatic ring (specifically, benzyl (meth)acrylate, phenethyl (meth)acrylate, phenoxyethyl (meth)acrylate, etc.) can be mentioned.

[0087] The content of the aromatic ring-containing structural unit in the carboxy group-containing polymer is preferably 0 to 97 mol %, more preferably 0 to 95 mol %, and even more preferably 0 to 90 mol %, when the total of all structural units in the carboxy group-containing polymer is taken as 100 mol %. The aromatic ring-containing structural unit may be used alone or in combination of two or more types.

[0088] <Constituent Unit Having Alicyclic Structure> In addition to the above-mentioned constituent units, the carboxy group-containing polymer also preferably has a constituent unit having an alicyclic structure. Examples of the alicyclic structure include tricyclo[5.2.1.0 ２，６ ] decane ring structure (also called tetrahydrodicyclopentadiene. The monovalent group is dicyclopentanyl), tricyclo[5.2.1.0 ２，６] decan-3-ene ring structure (also referred to as 5,6-dihydrodicyclopentadiene; the monovalent group is dicyclopentenyl), isobornane ring structure (the monovalent group is isobornyl), adamantane ring structure (the monovalent group is adamantyl), and cyclohexane ring structure (the monovalent group is cyclohexyl). Examples of structural units having an alicyclic structure include structural units derived from (meth)acrylates having an alicyclic structure (specifically, dicyclopentanyl (meth)acrylate, dicyclopentenyl (meth)acrylate, isobornyl (meth)acrylate, adamantyl (meth)acrylate, methyl adamantyl (meth)acrylate, cyclohexyl (meth)acrylate, etc.).

[0089] The content of the structural unit having an alicyclic structure in the carboxy group-containing polymer is preferably 0 to 97 mol %, more preferably 0 to 95 mol %, and even more preferably 0 to 90 mol %, when the total of all structural units of the carboxy group-containing polymer is taken as 100 mol %. The structural unit having an alicyclic structure may be used alone, or two or more types may be used in combination.

[0090] <Other Structural Units> The carboxyl group-containing polymer may have other structural units in addition to the structural units described above. Examples of the other structural units include structural units derived from methyl (meth)acrylate. The content of the other structural units in the carboxyl group-containing polymer is preferably 0 to 70 mol%, more preferably 0 to 50 mol%, and even more preferably 0 to 20 mol%, when the total of all structural units of the carboxyl group-containing polymer is taken as 100 mol%. The other structural units may be used alone or in combination of two or more.

[0091] (2) Compound B The light-absorbing and dissipative layer preferably contains, as the radical generator, Compound B (also referred to simply as "Compound B" in the present invention), having a structure capable of forming a hydrogen bond with the acid group contained in Compound A, together with Compound A. Compound B is preferably a compound having a structure that increases its basicity by absorbing ultraviolet light and becoming excited in an excited state. The increased basicity of Compound B in an excited state allows the acid group contained in Compound A to form a complex with Compound B through stronger interaction, thereby increasing the radical generation efficiency. The structure of Compound B capable of forming a hydrogen bond with the acid group contained in Compound A may be the entire structure of Compound B or a partial structure constituting a part of Compound B. Compound B may be a polymer compound (meaning a compound with a molecular weight of 5,000 or more) or a low molecular compound (meaning a compound with a molecular weight of less than 5,000), and is preferably a low molecular compound. The molecular weight of Compound B, which is a low molecular compound, is less than 5,000, preferably less than 1,000, more preferably 500 or less, and even more preferably 350 or less. Although there is no particular limitation on the lower limit, it is preferably at least 65, and more preferably at least 75. A preferred range for the molecular weight of compound B, which is a low molecular weight compound, is, for example, at least 65 and less than 5,000, preferably at least 65 and less than 1,000, more preferably 65 to 500, and even more preferably 75 to 350.

[0092] From the viewpoint of a large molar absorption coefficient with respect to ultraviolet light, compound B is preferably an aromatic compound. Here, an aromatic compound is a compound having one or more aromatic rings. The aromatic ring may be present in compound B alone or in multiple numbers. When multiple aromatic rings are present, for example, the aromatic ring may be present in a side chain of a polymer constituting the resin. The aromatic ring may be either an aromatic hydrocarbon ring or an aromatic heterocycle. In the case of an aromatic heterocycle (also referred to as a heteroaromatic ring), the compound has one or more (e.g., 1 to 4) heteroatoms (at least one of nitrogen atom, oxygen atom, sulfur atom, etc.) as ring-member atoms (ring-constituting atoms), and preferably has one or more (e.g., 1 to 4) nitrogen atoms as ring-member atoms. Note that unsubstituted aromatic hydrocarbons do not have a structure capable of forming hydrogen bonds with the acid group contained in compound A, and therefore do not have the function of generating radicals upon ultraviolet irradiation, and therefore do not fall under compound B. Furthermore, the unsubstituted aromatic hydrocarbon ring in the form in which the unsubstituted aromatic hydrocarbon ring is bonded to the side chain of the polymer constituting the resin does not have a structure capable of forming a hydrogen bond with the acid group contained in compound A, and therefore does not have the function of generating radicals upon ultraviolet irradiation, and does not correspond to compound B. The number of ring-member atoms of the aromatic ring is preferably 5 to 15.

[0093] Examples of the aromatic ring include monocyclic aromatic rings such as a pyridine ring, a pyrazine ring, a pyrimidine ring, and a triazine ring; aromatic rings fused with two rings such as a quinoline ring, an isoquinoline ring, a quinoxaline ring, and a quinazoline ring; and aromatic rings fused with three rings such as an acridine ring, a phenanthridine ring, a phenanthroline ring, and a phenazine ring.

[0094] The aromatic ring may have one or more (e.g., 1 to 5) substituents, and examples of the substituents include an alkyl group, an aryl group, a halogen atom, an acyl group, an alkoxycarbonyl group, an arylcarbonyl group, a carbamoyl group, a hydroxy group, a cyano group, and a nitro group. Furthermore, when the aromatic ring has two or more substituents, the multiple substituents may be bonded to each other to form a non-aromatic ring. Note that when multiple aromatic rings (e.g., 2 to 5 aromatic rings) form a series of aromatic ring structures bonded by a structure selected from single bonds, carbonyl bonds, and multiple bonds (e.g., a vinylene group which may have a substituent, -C≡C-, -N=N-, etc.), the entire series of aromatic ring structures is considered to be one specific structure. The series of aromatic ring structures in which the above-mentioned multiple aromatic rings are bonded by a structure selected from a single bond, a carbonyl bond, and a multiple bond does not fall under the above-mentioned unsubstituted aromatic hydrocarbon ring, nor does it fall under the unsubstituted aromatic hydrocarbon ring in a form in which an unsubstituted aromatic hydrocarbon ring is bonded to a side chain of a polymer constituting a resin. In addition, it is preferable that one or more of the multiple aromatic rings constituting the series of aromatic ring structures is the above-mentioned heteroaromatic ring.

[0095] Specific examples of compound B include monocyclic aromatic compounds such as pyridine compounds (pyridine and pyridine derivatives), pyrazine compounds (pyrazine and pyrazine derivatives), pyrimidine compounds (pyrimidine and pyrimidine derivatives), and triazine compounds (triazine and triazine derivatives); compounds in which two rings are fused to form an aromatic ring, such as quinoline compounds (quinoline and quinoline derivatives), isoquinoline compounds (isoquinoline and isoquinoline derivatives), quinoxaline compounds (quinoxaline and quinoxaline derivatives), and quinazoline compounds (quinazoline and quinazoline derivatives); and compounds in which three or more rings are fused to form an aromatic ring, such as acridine compounds (acridine and acridine derivatives), phenanthridine compounds (phenanthridine and phenanthridine derivatives), phenanthroline compounds (phenanthroline and phenanthroline derivatives), and phenazine compounds (phenazine and phenazine derivatives). In these specific examples of compound B, the term "compound" refers not only to the compound itself, but also to compounds having a substituent (referred to as "derivatives"), including unsubstituted compounds whose structure has been partially modified to the extent that the effects of the present invention are not impaired. It is believed that these compounds B form complexes with the aforementioned compound A, and generate two radical molecules through the following mechanism when irradiated with ultraviolet light: 1) Compound B in an excited state is generated by absorbing ultraviolet light; 2) A hole moves from excited compound B to compound A in the ground state (an electron from compound A moves to the lower-energy orbital of the two half-occupied orbitals of excited compound B); 3) A proton moves from compound A to compound B, generating a radical in which a hydrogen radical is added to compound B and a radical in which a hydrogen radical is released from compound A. When compound A is a compound having a carboxyl group, the following reaction further occurs, generating a radical by photodecarboxylation: 4) Carbon dioxide is released from the radical resulting from the release of a hydrogen radical from compound A.

[0096] Among these, compound B is preferably one or more of quinoline compounds (quinoline and quinoline derivatives) and isoquinoline compounds (isoquinoline and isoquinoline derivatives). Preferred substituents that these compounds may have are alkyl groups, aryl groups, halogen atoms, acyl groups, alkoxycarbonyl groups, arylcarbonyl groups, carbamoyl groups, hydroxy groups, cyano groups, and nitro groups.

[0097] When compound B is a polymer, the specific structure may be bonded to the polymer main chain via a single bond or a linking group. Compound B, which is a polymer, can be obtained, for example, by polymerizing a monomer having a heteroaromatic ring (specifically, a heteroaromatic ring having a vinyl group and / or a (meth)acrylate monomer having a heteroaromatic ring). If necessary, compound B may be copolymerized with other monomers.

[0098] Specific examples of compound B include quinoline, 2-methylquinoline, 4-methylquinoline, 2,4-dimethylquinoline, 2-methyl-4-phenylquinoline, isoquinoline, 1-methylisoquinoline, 3-methylisoquinoline, and 1-phenylisoquinoline.

[0099] From the viewpoint of achieving both the decolorization property of the UV-irradiated portion and the durability of the dye in the UV-unirradiated portion, the content of compound B is preferably 0.1 to 50% by mass, more preferably 2.0 to 40% by mass, even more preferably 4 to 35% by mass, and particularly preferably 8 to 30% by mass, relative to the total mass of the light-absorption-disappearing layer. Similarly, from the viewpoint of achieving both the decolorization property of the UV-irradiated portion and the durability of the dye in the UV-unirradiated portion, the pKaH (pKa of the conjugate acid), which is a measure of the basicity of compound B, is preferably 2.0 to 7.0, more preferably 3.0 to 6.0, and even more preferably 4.3 to 5.5. In the present invention, pKa refers to the negative common logarithm (−logKa) of the acid dissociation constant (Ka) in a mixed solvent of water / methanol = 50 / 50 (volume ratio) at 25°C. The pKa can be calculated by adding 0.01 mol / L of aqueous sodium hydroxide solution dropwise to a 50 / 50 (volume ratio) water / methanol mixed solution of a measurement sample (conjugate acid of compound B) and reading the amount of aqueous sodium hydroxide added dropwise up to the half-equivalent point. Compound B may be used singly or in combination of two or more types.

[0100] <Resin> The resin contained in the light-absorbing and disappearing layer is not particularly limited, as long as it can disperse (preferably dissolve) the dye, can cause the dye to fade due to radicals generated from a compound that generates radicals upon irradiation with ultraviolet light (preferably a radical generator containing compound B hydrogen-bonded to an acid group contained in compound A), and has desired light transmittance (a light transmittance of 80% or more is preferred in the visible region of a wavelength of 400 to 800 nm).

[0101] Various polymers can be used as the polymer constituting the resin, but from the viewpoint of preventing the molecular weight of the resin from decreasing due to ultraviolet irradiation, polymers having an aromatic ring or alicyclic structure in the side chain are preferred, and (meth)acrylic polymers containing structural units having an aromatic ring or alicyclic structure are more preferred. Among them, from the viewpoint of further improving the decolorization rate and further improving the heat resistance and light resistance, (meth)acrylic polymers containing structural units having an alicyclic structure are even more preferred. Here, (meth)acrylic polymer refers to a polymer containing at least one structural unit derived from (meth)acrylic acid and a structural unit derived from a (meth)acrylic acid ester. Note that when the polymer contains a structural unit derived from (meth)acrylic acid, the structural unit derived from (meth)acrylic acid becomes a structural unit having a carboxy group as the acid group in the above-mentioned compound A, and the polymer containing a structural unit derived from (meth)acrylic acid corresponds to the above-mentioned polymer in which the above-mentioned compound A is chemically bonded to the polymer constituting the resin. In the present invention, the term "main chain" refers to the relatively longest bond chain in the molecule of a polymer compound, and the term "side chain" refers to an atomic group branching off from the main chain.

[0102] Examples of monomers that derive structural units having an aromatic ring include benzyl acrylate, benzyl methacrylate, naphthyl acrylate, naphthyl methacrylate, naphthyl methyl acrylate, naphthyl methyl methacrylate, etc. When the polymer does not contain a structural unit derived from (meth)acrylic acid, the content of the structural unit having an aromatic ring is preferably 5 to 100% by mass, more preferably 10 to 100% by mass, and even more preferably 20 to 100% by mass, relative to the total mass of the polymer.

[0103] Examples of monomers that derive structural units having an alicyclic structure include dicyclopentanyl (meth)acrylate, cyclohexyl (meth)acrylate, isobornyl (meth)acrylate, and adamantyl (meth)acrylate. When the polymer contains structural units having an alicyclic structure, the content of the structural units having an alicyclic structure is preferably 1 to 90% by mass, more preferably 5 to 90% by mass, and even more preferably 5 to 80% by mass, relative to the total mass of the polymer.

[0104] Furthermore, in the light-absorbing and dissipative layer, the polymer constituting the resin may contain a structural unit bonded to a compound A having an acid group. The structural unit bonded to a compound A having an acid group can be the same as the structural unit having a carboxy group described above for compound A, with a structural unit derived from (meth)acrylic acid being preferred. The content of the structural unit bonded to a compound A having an acid group (preferably a structural unit derived from (meth)acrylic acid) is preferably 1 to 70% by mass, more preferably 1 to 60% by mass, relative to the total mass of the polymer. More preferably, the description of the content of the structural unit having a carboxy group in the carboxy group-containing polymer of compound A described above applies. When the polymer constituting the resin contains a structural unit bonded to a compound A having an acid group, the content of the structural unit having an aromatic ring, and the content of the structural unit having an alicyclic structure in the carboxy group-containing polymer of compound A described above apply to the content of the structural unit bonded to a compound A having an acid group, the content of the structural unit having an aromatic ring, and the content of the structural unit having an alicyclic structure.

[0105] The polymer constituting the resin may contain a structural unit having an alkyl group having 1 to 14 carbon atoms from the viewpoint of adjusting the glass transition temperature, etc. Examples of structural units having an alkyl group having 1 to 14 carbon atoms include structural units derived from alkyl (meth)acrylates such as methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, t-butyl (meth)acrylate, sec-butyl (meth)acrylate, pentyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, 2-ethylbutyl (meth)acrylate, n-octyl (meth)acrylate, isooctyl (meth)acrylate, isononyl (meth)acrylate, lauryl (meth)acrylate, and tetradecyl (meth)acrylate. In the present invention, structural units having an alkyl group having 1 to 14 carbon atoms may be used alone, or two or more types may be used in combination. The content of the structural unit having an alkyl group having 1 to 14 carbon atoms is preferably 0 to 95% by mass relative to the total mass of the polymers constituting the resin.

[0106] The weight average molecular weight (Mw) of the polymer constituting the resin is preferably 10,000 or more, more preferably 10,000 to 200,000, and even more preferably 15,000 to 150,000.

[0107] Next, the wavelength selective absorption layer constituting the light absorption filter of the present invention will be described in detail.

[0108] <<Wavelength-Selective Absorption Layer>> The wavelength-selective absorption layer constituting the light-absorbing filter of the present invention contains a resin and a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, and does not contain a compound that generates radicals when irradiated with ultraviolet light. In the wavelength-selective absorption layer, the "dye" is dispersed (preferably dissolved) in the resin, thereby making the wavelength-selective absorption layer a layer that exhibits a specific absorption spectrum derived from the dye.

[0109] <Dye> The "dye" contained in the wavelength-selective absorption layer preferably includes at least one of the following dyes A to D, which have a main absorption wavelength band in a different wavelength region. Dye A: A dye having a main absorption wavelength band in a wavelength range of 390 to 435 nm Dye B: A dye having a main absorption wavelength band in a wavelength range of 480 to 520 nm Dye C: A dye having a main absorption wavelength band in a wavelength range of 560 to 610 nm Dye D: A dye having a main absorption wavelength band in a wavelength range of 640 to 780 nm The dye A that can be contained in the wavelength-selective absorption layer may be one type or two or more types. As with dye A, the dyes B to D that can be contained in the wavelength-selective absorption layer may each independently be one type or two or more types. The wavelength-selective absorption layer may also contain dyes other than the dyes A to D.

[0110] The wavelength-selective absorption layer may have any form as long as the dye in the wavelength-selective absorption layer exhibits an absorption spectrum, and in combination with the light-absorbing and disappearing layer, the resulting optical filter can simultaneously suppress both external light reflection and brightness reduction, and preferably does not affect the original color of the displayed image. One form of the wavelength-selective absorption layer is one in which a dye (preferably at least one of dyes A to D) is dispersed (preferably dissolved) in a resin. This dispersion may be random, regular, or the like.

[0111] In the wavelength-selective absorption layer, the dyes A to D have main absorption wavelength bands in wavelength ranges of 390 to 435 nm, 480 to 520 nm, 560 to 610 nm, and 640 to 780 nm, respectively, which are wavelength ranges that hardly overlap with B (Blue, 460 nm), G (Green, 520 nm), and R (Red, 620 nm), which are used as light-emitting sources in OLED display devices. Therefore, by containing at least one of these dyes A to D, the wavelength-selective absorption layer can suppress reflection of external light in the display unit of the display device without impairing the color reproduction range of light emitted from the OLED. Note that when the optical filter of the present invention obtained using the light-absorbing filter of the present invention is applied to an inorganic EL display device or a liquid crystal display device, as in the case of an OLED display device, reflection of external light in the display unit of the display device can be suppressed without impairing the color reproduction range of light emitted from the display device by containing in the wavelength-selective absorption layer a dye having a main absorption wavelength band in a wavelength range that hardly overlaps with the light-emitting sources of each display device.

[0112] In particular, from the viewpoint of using a wavelength-selective absorption layer that exhibits an absorption spectrum that has a negative correlation with the emission spectrum of the light source and bringing out the original color of an image in an OLED display device, it is preferable that the dyes A, B, C, and D contained in the wavelength-selective absorption layer are a combination of at least two types, more preferably a combination of at least three types, and even more preferably all four types are contained. When two or more types of dyes A to D are contained in the wavelength-selective absorption layer as described above, a problem of reduced lightfastness due to mixing of the dyes may occur due to chain transfer of radicals generated during dye decomposition, etc. To address this problem, the light-absorbing filter of the present invention and the wavelength-selective absorption layer in the optical filter obtained by mask-exposing the light-absorbing filter of the present invention can exhibit an excellent level of lightfastness that overcomes the reduced lightfastness associated with mixing of the dyes by providing a specific gas barrier layer described below.

[0113] In particular, from the viewpoint of further bringing out the original color of an image of an OLED display device, it is preferable that the wavelength-selective absorption layer contains all of the four dyes A to D and satisfies the following relational formulas (I) to (VI). The optical filter of the present invention obtained from the light-absorbing filter of the present invention having the wavelength-selective absorption layer having such a configuration and the light-absorbing and disappearing layer described above can not only satisfactorily suppress external light reflection and brightness reduction, but also maintain the original color of an image of an OLED display device at an excellent level. Relational formula (I) Ab(450) / Ab(430)<1.0 Relational formula (II) Ab(450) / Ab(500)<1.0 Relational formula (III) Ab(540) / Ab(500)<1.0 Relational formula (IV) Ab(540) / Ab(600)<1.0 Relational formula (V) Ab(630) / Ab(600)≦0.5 Relational formula (VI) Ab(630) / Ab(700)<1.0

[0114] In the ranges defined by the above relational formulas (I) to (VI), preferred ranges are as follows: The upper limit of Ab(450) / Ab(430) in relational formula (I) is preferably 0.90 or less, more preferably 0.85 or less, even more preferably 0.80 or less, and particularly preferably 0.60 or less. There is no particular restriction on the lower limit, but a practical value is 0.05 or more, preferably 0.10 or more, and more preferably 0.20 or more. The upper limit of Ab(450) / Ab(500) in relational formula (II) is preferably 0.90 or less, more preferably 0.80 or less, even more preferably 0.75 or less, particularly preferably 0.65 or less, and of these, 0.60 or less is preferred, and 0.50 or less is most preferred. There is no particular restriction on the lower limit, but a practical value is 0.05 or more, preferably 0.10 or more, and more preferably 0.20 or more. The upper limit of Ab(540) / Ab(500) in the relational formula (III) is preferably 0.90 or less, more preferably 0.80 or less, even more preferably 0.75 or less, particularly preferably 0.70 or less, and of these, 0.50 or less is preferred, and 0.20 or less is most preferred. There is no particular restriction on the lower limit, but 0.01 or more is practical, 0.02 or more is preferred, and 0.05 or more is more preferred. The upper limit of Ab(540) / Ab(600) in the relational formula (IV) is preferably 0.90 or less, more preferably 0.85 or less, even more preferably 0.80 or less, particularly preferably 0.70 or less, and of these, 0.50 or less is preferred, and 0.25 or less is most preferred. There is no particular restriction on the lower limit, but 0.01 or more is practical, 0.02 or more is preferred, and 0.05 or more is more preferred. The upper limit of Ab(630) / Ab(600) in relational formula (V) is preferably 0.40 or less, more preferably 0.30 or less, even more preferably 0.20 or less, and particularly preferably 0.15 or less. There is no particular restriction on the lower limit, but a practical value is 0.01 or more, preferably 0.02 or more, and more preferably 0.05 or more. The upper limit of Ab(630) / Ab(700) in relational formula (VI) is preferably 0.95 or less, more preferably 0.90 or less, even more preferably 0.80 or less, and particularly preferably 0.75 or less.There is no particular restriction on the lower limit, but a practical value is 0.01 or more, preferably 0.03 or more, more preferably 0.10 or more, even more preferably 0.40 or more, and particularly preferably 0.50 or more.

[0115] By ensuring that the relational expressions (I) to (VI) each satisfy the preferred ranges, color changes due to the provision of the optical filter of the present invention can be minimized, and the original color of the image of the OLED display device can be more clearly displayed. Therefore, it is preferable that the dyes A to D have a sharp absorption waveform in the main absorption wavelength band. For example, when dye B is a squaraine dye represented by the general formula (1) described below, the wavelength-selective absorption layer can satisfy the preferred ranges of the relational expressions (II) and (III), thereby maintaining the original color of the image of the OLED display device at a superior level. This is thought to be due to the low absorbance at wavelengths near the absorption maximum (534 nm) of the green visual pigment of human cones. Furthermore, when dye C is a squaraine dye represented by the general formula (1) described below, the wavelength-selective absorption layer can satisfy the preferred ranges of the relational expressions (I) to (IV), thereby maintaining the original color of the image of the OLED display device at a superior level. This is also thought to be due to the low absorbance at wavelengths near the absorption maximum (534 nm) of the green visual pigment of human cones. In particular, it is important to satisfy the relational expression (V) in order to avoid affecting the original color of the image of the OLED display device. ＊ It is believed that this can suppress the change in color tone, and as a result, the above-mentioned color tone can be maintained at an excellent level.

[0116] (Dye A) There are no particular limitations on the dye A, and various dyes can be used as long as they have a main absorption wavelength band in the wavelength range of 390 to 435 nm in the light-absorbing filter of the present invention. The wavelength range in which dye A has a main absorption wavelength band is preferably 395 to 435 nm, more preferably 400 to 435 nm, and even more preferably 405 to 435 nm.

[0117] As the dye A, a dye represented by the following general formula (A1) is preferred because it has a sharp absorption waveform in the main absorption wavelength band.

[0118]

[0119] In formula (A1), R １ and R ２ each independently represents an alkyl group or an aryl group; R ３ ~R ６ each independently represents a hydrogen atom or a substituent, R ５ and R ６ may be bonded to each other to form a six-membered ring.

[0120] Unless otherwise specified, the definition and preferred range of each substituent in the general formula (A1) can be directly applied to the descriptions of each substituent of the dye represented by the general formula (A1) described in paragraphs

[0022] to

[0056] of WO 2022 / 138925. For example, as described in paragraph

[0056] of WO 2022 / 138925, from the viewpoint of light fastness in particular, １ and R ２ Among them, R １ is preferably an alkyl group, and R １ is an alkyl group, and R ２ is more preferably an alkyl group or an aryl group. １ and R ２ are each independently an alkyl group, and are particularly preferably an alkyl group having 1 to 8 carbon atoms.

[0121] From the viewpoint of heat resistance and light resistance, R １ and R ２ It is also preferable that all of R are aryl groups. １ and R ２ When each independently represents an aryl group, R ３ , R ５ and R ６ are each independently a hydrogen atom, an alkyl group, or an aryl group, and R ３ and R ６ At least one of R is preferably a hydrogen atom. ３ represents a hydrogen atom, R ５ and R６ More preferably, each independently represents an alkyl group or an aryl group, and R ３ represents a hydrogen atom, R ５ and R ６ More preferably, each independently represents an alkyl group, and R ３ represents a hydrogen atom, R ５ and R ６ each independently represents an alkyl group, and R ５ and R ６ are particularly preferably bonded to each other to form a ring, which is condensed with a pyrrole ring, and together with the pyrrole ring forms an indole ring. That is, the dye represented by the above general formula (A1) is particularly preferably a dye represented by the following general formula (A2):

[0122]

[0123] In formula (A2), R １ ~R ４ represents R in general formula (A1). １ ~R ４ and preferred embodiments are also the same.

[0124] In formula (A2), R １５ represents a substituent. １５ Examples of the substituent that can be adopted as R include the substituents included in the substituent group A in the description of the dye represented by general formula (A1) described in the above-mentioned WO 2022 / 138925. １５ R is preferably an alkyl group, an aryl group, a halogen atom, an acyl group, or an alkoxycarbonyl group. １５ The alkyl and aryl groups that can be taken as R ３ , R ５ and R ６ The alkyl group and the aryl group that can be taken as R are the same in meaning and preferred embodiments. １５ Examples of halogen atoms that can be taken as R include a chlorine atom, a bromine atom, and an iodine atom. １５ Examples of the acyl group that can be taken as R include an acetyl group, a propionyl group, and a butyroyl group. １５The amino group that can be used as R ４ The description of the amino group that the substituted aryl group in R may have can be applied. Also preferred is a 5- to 7-membered nitrogen-containing heterocyclic group in which the alkyl group on the nitrogen atom of the amino group is bonded to form a ring. １５ The alkoxycarbonyl group which can be taken as the alkyl group is preferably an alkoxycarbonyl group having 2 to 5 carbon atoms, and examples thereof include methoxycarbonyl, ethoxycarbonyl, normal propoxycarbonyl, and isopropoxycarbonyl.

[0125] n is an integer of 0 to 4. There are no particular limitations on n, but it is preferably 0 or 1, for example.

[0126] Specific examples of the dye represented by general formula (A1) include the compounds described in paragraphs

[0063] to

[0065] of WO 2022 / 138925 and the following compound (E-42), although the present invention is not limited thereto.

[0127]

[0128] As the dye A, in addition to the coloring matter represented by general formula (A1), the compounds described in paragraphs 0012 to 0067 of JP-A No. 5-53241 and the compounds described in paragraphs 0011 to 0076 of Japanese Patent No. 2707371 can also be preferably used.

[0129] (Dye B, Dye C) Dye B is not particularly limited as long as it has a main absorption wavelength band in the wavelength range of 480 to 520 nm in the light-absorbing filter of the present invention, and various dyes can be used. Dye C is not particularly limited as long as it has a main absorption wavelength band in the wavelength range of 560 to 610 nm in the light-absorbing filter of the present invention, and various dyes can be used. The wavelength range in which Dye B has a main absorption wavelength band is preferably 485 to 520 nm, more preferably 490 to 520 nm, and even more preferably 490 to 515 nm. The wavelength range in which Dye C has a main absorption wavelength band is preferably 580 to 615 nm, more preferably 580 to 610 nm, and even more preferably 580 to 610 nm.

[0130] Specific examples of dye B include pyrrole methine (PM), rhodamine (RH), boron dipyrromethene (BODIPY), and squaraine (SQ). Specific examples of dye C include tetraazaporphyrin (TAP), squaraine, and cyanine (CY).

[0131] Among these, as the dyes B and C, squaraine dyes are preferred, and squaraine dyes represented by the following general formula (1) are more preferred, in view of the sharp absorption waveforms in the main absorption wavelength band. By using dyes with sharp absorption waveforms as the dyes B and C as described above, the above-mentioned relational expressions (I) and (II) can be satisfied to a preferred level, and the original color of the image of the OLED display device can be maintained at a more excellent level. That is, from the viewpoint of suppressing the color change, it is preferred that at least one of the dyes B and C in the wavelength selective absorption layer be a squaraine dye (preferably a squaraine dye represented by the following general formula (1)), and it is more preferred that both the dyes B and C be squaraine dyes (preferably squaraine dyes represented by the following general formula (1)).

[0132]

[0133] In general formula (1), 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.

[0134] For the definition and preferred range of each substituent in the general formula (1), unless otherwise specified, the descriptions regarding each substituent of the dye represented by the general formula (1) described in paragraphs

[0073] to

[0095] ,

[0099] and

[0100] of WO 2021 / 221122 can be applied as they are.

[0135] A preferred embodiment of the dye represented by the above general formula (1) is a dye represented by the following general formula (2).

[0136]

[0137] In general formula (2), A １ is the same as A in general formula (1). Among them, a nitrogen-containing five-membered heterocyclic group is preferred.

[0138] In general formula (2), R １ and R ２ R each independently represents a hydrogen atom or a substituent. １ and R ２ may be the same or different, and may be bonded to each other to form a ring. １ and R ２The substituents that can be adopted as the aryl group are not particularly limited, and examples thereof include alkyl groups (methyl groups, ethyl groups, propyl groups, isopropyl groups, butyl groups, t-butyl groups, isobutyl groups, pentyl groups, hexyl groups, octyl groups, dodecyl groups, trifluoromethyl groups, etc.), cycloalkyl groups (cyclopentyl groups, cyclohexyl groups, etc.), alkenyl groups (vinyl groups, allyl groups, etc.), alkynyl groups (ethynyl groups, propargyl groups, etc.), aryl groups (phenyl groups, naphthyl groups, etc.), heteroaryl groups (furyl groups, thienyl groups, pyridyl groups, pyridazyl groups, pyrimidyl groups, pyrazinyl groups, a phenyl group, a triazyl group, an imidazolyl group, a pyrazolyl group, a thiazolyl group, a benzimidazolyl group, a benzoxazolyl group, a quinazolyl group, a phthalazyl group, etc.), a heterocyclic group (also called a heterocyclic group, for example, a pyrrolidyl group, an imidazolidyl group, a morpholyl group, an oxazolidyl group, etc.), an alkoxy group (a methoxy group, an ethoxy group, a propyloxy group, etc.), a cycloalkoxy group (a cyclopentyloxy group, a cyclohexyloxy group, etc.), an aryloxy group (a phenoxy group, a naphthyloxy group, etc.), a heteroaryloxy group (aromatic heterocyclic oxy group), an alkylthio group (methylthio group, ethylthio group, propylthio group, etc.), cycloalkylthio group (cyclopentylthio group, cyclohexylthio group, etc.), arylthio group (phenylthio group, naphthylthio group, etc.), heteroarylthio group (aromatic heterocyclic thio group), alkoxycarbonyl group (methyloxycarbonyl group, ethyloxycarbonyl group, butyloxycarbonyl group, octyloxycarbonyl group, etc.), aryloxycarbonyl group (phenyloxycarbonyl group, naphthyloxycarbonyl group, etc.), phosphoryl group (dimethoxyphosphonyl, diphenylphosphoryl ), sulfamoyl groups (aminosulfonyl groups, methylaminosulfonyl groups, dimethylaminosulfonyl groups, butylaminosulfonyl groups, cyclohexylaminosulfonyl groups, octylaminosulfonyl groups, phenylaminosulfonyl groups, 2-pyridylaminosulfonyl groups, etc.), acyl groups (acetyl groups, ethylcarbonyl groups, propylcarbonyl groups, cyclohexylcarbonyl groups, octylcarbonyl groups, 2-ethylhexylcarbonyl groups, phenylcarbonyl groups, naphthylcarbonyl groups, pyridylcarbonyl groups, etc.), acyloxy groups (acetyloxy groups,ethylcarbonyloxy group, butylcarbonyloxy group, octylcarbonyloxy group, phenylcarbonyloxy group, etc.), amide group (methylcarbonylamino group, ethylcarbonylamino group, dimethylcarbonylamino group, propylcarbonylamino group, pentylcarbonylamino group, cyclohexylcarbonylamino group, 2-ethylhexylcarbonylamino group, octylcarbonylamino group, dodecylcarbonylamino group, phenylcarbonylamino group, naphthylcarbonylamino group, etc.) , sulfonylamide groups (methylsulfonylamino groups, octylsulfonylamino groups, 2-ethylhexylsulfonylamino groups, trifluoromethylsulfonylamino groups, etc.), carbamoyl groups (aminocarbonyl groups, methylaminocarbonyl groups, dimethylaminocarbonyl groups, propylaminocarbonyl groups, pentylaminocarbonyl groups, cyclohexylaminocarbonyl groups, octylaminocarbonyl groups, 2-ethylhexylaminocarbonyl groups, dodecylaminocarbonyl groups, phenylaminocarbonyl groups, etc.), a carboxyl group, a naphthylaminocarbonyl group, a 2-pyridylaminocarbonyl group, etc.), a ureido group (a methylureido group, an ethylureido group, a pentylureido group, a cyclohexylureido group, an octylureido group, a dodecylureido group, a phenylureido group, a naphthylureido group, a 2-pyridylaminoureido group, etc.), an alkylsulfonyl group (a methylsulfonyl group, an ethylsulfonyl group, a butylsulfonyl group, a cyclohexylsulfonyl group, a 2-ethylhexylsulfonyl group, etc.), an arylsulfonyl group Examples of such groups include alkyl groups (phenylsulfonyl group, naphthylsulfonyl group, 2-pyridylsulfonyl group, etc.), amino groups (amino group, ethylamino group, dimethylamino group, butylamino group, dibutylamino group, cyclopentylamino group, 2-ethylhexylamino group, dodecylamino group, anilino group, naphthylamino group, 2-pyridylamino group, etc.), alkylsulfonyloxy groups (methanesulfonyloxy), cyano group, nitro group, halogen atoms (fluorine atom, chlorine atom, bromine atom, etc.), and hydroxy groups. Among these, alkyl groups, alkenyl groups, aryl groups, and heteroaryl groups are preferred, alkyl groups, aryl groups, and heteroaryl groups are more preferred, and alkyl groups are even more preferred.

[0139] R １ and R ２ The substituent that can be taken as R may further have a substituent. １ and R ２ and the substituent X that A, B, and G in the general formula (1) may have (the substituent X described in paragraphs

[0079] to

[0095] of WO 2021 / 221122). １ and R ２ may be bonded to each other to form a ring, and R １ or R ２ And B ２ or B ３ may bond with the substituents possessed by R to form a ring. The ring formed in this case is preferably a hetero ring or a heteroaryl ring, and the size of the ring formed is not particularly limited, but is preferably a 5-membered or 6-membered ring. The number of rings formed is also not particularly limited, and may be one or two or more. Examples of the form in which two or more rings are formed include, for example, R １ and B ２ The substituents of and R ２ and B ３ and the substituents possessed by each of the groups may be bonded to form two rings.

[0140] In the general formula (2), B １ , B ２ , B ３ and B ４ each independently represents a carbon atom or a nitrogen atom. １ , B ２ , B ３ and B ４ The ring containing B is an aromatic ring. １ ~B ４ Among these, at least two are preferably carbon atoms, and B １ ~B ４ It is more preferable that all of B are carbon atoms. １ ~B ４ The carbon atom which can be represented by B has a hydrogen atom or a substituent. １ ~B ４The number of carbon atoms having a substituent among the carbon atoms that can be taken as B is not particularly limited, but is preferably 0, 1 or 2, and more preferably 1. １ and B ４ is a carbon atom, and at least one of them preferably has a substituent. １ ~B ４ The substituents that can be taken by the carbon atom as R are not particularly limited, and １ and R ２ Among these, preferred are alkyl groups, alkoxy groups, alkoxycarbonyl groups, aryl groups, acyl groups, amide groups, sulfonylamido groups, carbamoyl groups, alkylsulfonyl groups, arylsulfonyl groups, amino groups, cyano groups, nitro groups, halogen atoms, and hydroxy groups, and more preferred are alkyl groups, alkoxy groups, alkoxycarbonyl groups, aryl groups, acyl groups, amide groups, sulfonylamido groups, carbamoyl groups, amino groups, cyano groups, nitro groups, halogen atoms, and hydroxy groups. １ ~B ４ The substituents that can be taken as the carbon atom may further have a substituent. Examples of the further substituents that can be taken as the carbon atom include R １ and R ２ and the substituent X that A, B, and G in the general formula (1) may have (WO 2021 / 221122, paragraphs

[0079] to

[0095] of the substituent X).

[0141] B １ and B ４ The substituent that the carbon atom may have is more preferably an alkyl group, an alkoxy group, a hydroxy group, an amide group, a sulfonylamido group, or a carbamoyl group, particularly preferably an alkyl group, an alkoxy group, a hydroxy group, an amide group, or a sulfonylamido group, and most preferably a hydroxy group, an amide group, or a sulfonylamido group. ２ and B ３The substituent that the carbon atom may have is more preferably an alkyl group, an alkoxy group, an alkoxycarbonyl group, an acyl group, an amino group, a cyano group, a nitro group, or a halogen atom, and it is particularly preferred that either one of the substituents is an electron-withdrawing group (for example, an alkoxycarbonyl group, an acyl group, a cyano group, a nitro group, or a halogen atom).

[0142] The dye represented by the above general formula (2) is preferably a dye represented by any one of the following general formulas (3), (4) and (5).

[0143]

[0144] In general formula (3), R １ and R ２ each independently represents a hydrogen atom or a substituent, and R １ and R ２ In general formula (3), B has the same meaning as B, and the preferred range is also the same. １ ~B ４ each independently represents a carbon atom or a nitrogen atom, and B in the general formula (2) １ ~B ４ The same definition and preferred range are also the same.

[0145] In general formula (3), R ３ and R ４ R each independently represents a hydrogen atom or a substituent. ３ and R ４ The substituents that can be adopted as R １ and R ２ The substituents that can be used as R ３ The substituent that can be taken as R is preferably an alkyl group, an alkoxy group, an amino group, an amido group, a sulfonylamido group, a cyano group, a nitro group, an aryl group, a heteroaryl group, a heterocyclic group, an alkoxycarbonyl group, a carbamoyl group or a halogen atom, more preferably an alkyl group, an aryl group or an amino group, and even more preferably an alkyl group. ４The substituent that can be taken as aryl is preferably an alkyl group, an aryl group, a heteroaryl group, a heterocyclic group, an alkoxy group, an alkoxycarbonyl group, an acyl group, an acyloxy group, an amido group, a carbamoyl group, an amino group, or a cyano group, more preferably an alkyl group, an alkoxycarbonyl group, an acyl group, a carbamoyl group, or an aryl group, and still more preferably an alkyl group.

[0146] R ３ and R ４ The alkyl group may be linear, branched, or cyclic, but is preferably linear or branched. The number of carbon atoms in the alkyl group is preferably 1 to 12, and more preferably 1 to 8. Preferred examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, a t-butyl group, a 2-ethylhexyl group, and a cyclohexyl group, and more preferably a methyl group or a t-butyl group.

[0147]

[0148] In general formula (4), R １ and R ２ each independently represents a hydrogen atom or a substituent, and R １ and R ２ In general formula (4), B has the same meaning as B, and the preferred range is also the same. １ ~B ４ each independently represents a carbon atom or a nitrogen atom, and B in the general formula (2) １ ~B ４ The same definition and preferred range are also the same.

[0149] In general formula (4), R ５ and R ６ R each independently represents a hydrogen atom or a substituent. ５ and R ６ The substituents that can be adopted as R １ and R ２ The substituents that can be used as R ５The substituent that can be taken as R is preferably an alkyl group, an alkoxy group, an aryloxy group, an amino group, a cyano group, an aryl group, a heteroaryl group, a heterocyclic group, an acyl group, an acyloxy group, an amido group, a sulfonylamido group, a ureido group, or a carbamoyl group, more preferably an alkyl group, an alkoxy group, an acyl group, an amido group, or an amino group, and still more preferably an alkyl group. ５ The alkyl group that can be taken as is R ３ The preferred ranges are also the same as those of the alkyl groups that can be taken as above.

[0150] In general formula (4), R ６ The substituent that can be taken as R is preferably an alkyl group, an alkenyl group, an aryl group, a heteroaryl group, a heterocyclic group, an alkoxy group, a cycloalkoxy group, an aryloxy group, an alkoxycarbonyl group, an acyl group, an acyloxy group, an amido group, a sulfonylamido group, an alkylsulfonyl group, an arylsulfonyl group, a carbamoyl group, an amino group, a cyano group, a nitro group, or a halogen atom, more preferably an alkyl group, an aryl group, a heteroaryl group, or a heterocyclic group, and even more preferably an alkyl group or an aryl group. ６ The alkyl group that can be taken as is R ４ The meanings and preferred ranges of the alkyl groups are the same as those of the alkyl groups that can be taken as R ６ The aryl group that can be taken as (R) is preferably an aryl group having 6 to 12 carbon atoms, and more preferably a phenyl group. This aryl group may have a substituent, and examples of such a substituent include groups included in the following substituent group B, with alkyl groups having 1 to 10 carbon atoms, sulfonyl groups, amino groups, acylamino groups, sulfonylamino groups, and the like being particularly preferred. These substituents may further have a substituent. Specifically, the substituent is preferably an alkylsulfonylamino group.

[0151] - Substituent Group B - A halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, a cyano group, a hydroxy group, a nitro group, a carboxy group, an alkoxy group, an aminooxy group, an aryloxy group, a silyloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, an amino group, an acylamino group, an aminocarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, a sulfonylamino group (including an alkyl or arylsulfonylamino group), a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, a sulfamoyl group, a sulfo group, an alkyl or arylsulfinyl group, a sulfonyl group (including an alkyl or arylsulfonyl group), an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an aryl or heterocyclic azo group, an imido group, a phosphino group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, a silyl group, and the like.

[0152]

[0153] In general formula (5), R １ and R ２ each independently represents a hydrogen atom or a substituent, and R １ and R ２ In general formula (5), B has the same meaning as B, and the preferred range is also the same. １ ~B ４ each independently represents a carbon atom or a nitrogen atom, and B in the general formula (2) １ ~B ４ The same definition and preferred range are also the same.

[0154] In general formula (5), R ７ and R ８ R each independently represents a hydrogen atom or a substituent. ７ and R ８ The substituents that can be adopted as R １ and R ２ The substituents that can be used as R ７The preferred range, more preferred range, and even more preferred range of the substituents that can be taken as R in general formula (4) are ５ The substituents are the same as those that can be taken as R ５ The alkyl group that can be taken as R ３ The preferred ranges are also the same as those of the alkyl groups that can be taken as above.

[0155] In general formula (5), R ８ The preferred range, more preferred range, and even more preferred range of the substituents that can be taken as R in general formula (4) are ６ The substituents are the same as those that can be taken as R ８ The preferred range of alkyl groups and aryl groups that can be taken as R in the above general formula (4) is ６ The meanings and preferred ranges of the alkyl and aryl groups are the same as those of the alkyl and aryl groups that can be taken as the above.

[0156] The squaraine dye may be any squaraine dye represented by any of general formulas (1) to (5) without any particular limitation. Examples thereof include the compounds described in JP-A-2006-160618, WO-A-2004 / 005981, WO-A-2004 / 007447, Dyes and Pigment, 2001, 49, pp. 161-179, WO-A-2008 / 090757, WO-A-2005 / 121098, and JP-A-2008-275726.

[0157] Specific examples of the dyes represented by any of the general formulas (1) to (5) include the compounds described in paragraphs

[0119] to

[0122] of WO 2021 / 221122. However, the present invention is not limited to these. In addition to the above specific examples, specific examples of the dyes represented by any of the general formulas (3) to (5) include the compounds described in paragraphs

[0124] to

[0132] of WO 2021 / 221122. However, the present invention is not limited to these.

[0158] A preferred embodiment of the dye represented by the above general formula (1) is a dye represented by the following general formula (6).

[0159]

[0160] In general formula (6), R ３ and R ４ each independently represents a hydrogen atom or a substituent, and R in the above general formula (3) ３ and R ４ In general formula (6), A has the same meaning as A, and the preferred meanings are also the same. ２ is the same as A in general formula (1). Among them, a nitrogen-containing five-membered heterocyclic group is preferred.

[0161] The dye represented by the above general formula (6) is preferably a dye represented by any one of the following general formulas (7), (8) and (9).

[0162]

[0163] In general formula (7), R ３ and R ４ each independently represents a hydrogen atom or a substituent, and R in the above general formula (3) ３ and R ４ The two R ３ and two R ４ may be the same or different.

[0164]

[0165] In general formula (8), R ３ and R ４ each independently represents a hydrogen atom or a substituent, and R in the above general formula (3) ３ In general formula (8), R ５ and R ６ each independently represents a hydrogen atom or a substituent, and R in the above general formula (4) ５ and R ６ The same definition and preferred range are also the same.

[0166]

[0167] In general formula (9), R ３ and R ４each independently represents a hydrogen atom or a substituent, and R in the above general formula (3) ３ In general formula (9), R ７ and R ８ each independently represents a hydrogen atom or a substituent, and R in the above general formula (5) ７ and R ８ The same definition and preferred range are also the same.

[0168] In the present invention, when a squaraine dye is used as dye B, the squaraine dye can be any squaraine dye represented by any of general formulas (6) to (9) and can be used without particular limitation. Examples of squaraine dyes include the compounds described in JP-A-2002-97383 and JP-A-2015-68945. Specific examples of squaraine dyes represented by any of general formulas (6) to (9) include the compounds described in

[0145] to

[0148] of WO 2021 / 221122. However, the present invention is not limited thereto.

[0169] (Quencher-Incorporated Dye) The squaraine dye represented by the general formula (1) above may be a quencher-incorporated dye in which the quencher moiety is covalently linked to the dye via a linking group. The quencher-incorporated dye can also be preferably used as at least one of dyes B and C. That is, the quencher-incorporated dye is counted as dye B or dye C depending on the wavelength having the main absorption wavelength band. Examples of the quencher moiety include the ferrocenyl group in the above-mentioned substituent X (substituent X described in paragraphs

[0079] to

[0095] of WO 2021 / 221122). Further examples include the quencher moiety in the quencher compound described in paragraphs

[0199] to

[0212] and paragraphs

[0234] to

[0310] of WO 2019 / 066043.

[0170] Among the squaraine dyes represented by general formula (1), specific examples of dyes that are quencher-containing dyes include the compounds described in paragraphs

[0151] to

[0167] of WO 2021 / 221122 and the following compounds (C-121) and (C-122). However, the present invention is not limited to these.

[0171]

[0172] (Dye D) The dye D is not particularly limited as long as it has a main absorption wavelength band in the wavelength range of 640 to 780 nm in the light-absorbing filter of the present invention, and various dyes can be used. Specific examples of dye D include porphyrin, squaraine, cyanine (CY), and indoaniline dyes. Preferred examples of squaraine dyes include squaraine dyes represented by the following general formula (1):

[0173] (Dye represented by general formula (1))

[0174]

[0175] In the general formula (1), the possible embodiments of A and B are the same as those of A and B in the general formula (1) described above in connection with dye B and dye C.

[0176] When dye D is a dye represented by general formula (1), it is preferably a dye represented by the following general formula (14).

[0177]

[0178] In general formula (14), R １ and R ２ represents R in the above general formula (2). １ and R ２ Also, R ４１ and R ４２ R in the above general formula (2) １ and R ２ It is synonymous with R １ , R ２ , R ４１ and R ４２Among these, R is preferably an alkyl group, an alkenyl group, an aryl group, or a heteroaryl group, more preferably an alkyl group, an aryl group, or a heteroaryl group, and even more preferably an alkyl group or an aryl group. １ , R ２ , R ４１ and R ４２ may further have a substituent. Examples of the substituent that may further have include R １ and R ２ and the substituent X that A, B, and G in the general formula (1) may have (WO 2021 / 221122, paragraphs

[0079] to

[0095] of the substituent X).

[0179] B in general formula (14) １ , B ２ , B ３ and B ４ are the same as B in the general formula (2) above. １ , B ２ , B ３ and B ４ In addition, B in general formula (14) ５ , B ６ , B ７ and B ８ are the same as B in the general formula (2) above. １ , B ２ , B ３ and B ４ It is synonymous with B. １ , B ２ , B ３ , B ４ , B ５ , B ６ , B ７ and B ８ The substituents that can be taken as the carbon atom may further have a substituent. Examples of the substituents that may be further taken as the substituents X that A, B, and G in the general formula (1) may have (substituent X described in paragraphs

[0079] to

[0095] of WO 2021 / 221122) can be mentioned.

[0180] In general formula (14), R １ and R２ may be bonded to each other to form a ring, and R １ or R ２ And B ２ or B ３ may be bonded to the substituents of R to form a ring. ４１ and R ４２ may be bonded to each other to form a ring, and R ４１ or R ４２ And B ６ or B ７ may bond with the substituents possessed by R to form a ring. In the above, the ring formed is preferably a hetero ring or a heteroaryl ring, and the size of the ring formed is not particularly limited, but it is preferably a 5-membered or 6-membered ring. In addition, the number of rings formed is not particularly limited, and may be one or two or more. Examples of the form in which two or more rings are formed include, for example, R １ and B ２ The substituents of and R ２ and B ３ and the substituents possessed by each of the groups may be bonded to form two rings.

[0181] Specific examples of dye D represented by general formula (1) include the compounds described in paragraphs

[0097] to

[0099] of WO 2023 / 228799. However, the present invention is not limited to these.

[0182] The indoaniline dye represented by formula (v) in the light-absorbing and disappearing layer can also be preferably used as dye D in the wavelength-selective absorption layer.

[0183] The total content of the dyes (preferably the dyes A to D) in the wavelength selective absorption layer is preferably 0.10% by mass or more, more preferably 0.15% by mass or more, even more preferably 0.20% by mass or more, particularly preferably 0.25% by mass or more, and especially preferably 0.30% by mass or more. When the total content of the dyes A to D in the wavelength selective absorption layer is equal to or greater than the above-mentioned preferable lower limit, a good antireflection effect can be obtained. Furthermore, the total content of the dyes (preferably the dyes A to D) in the wavelength selective absorption layer is usually 50% by mass or less, preferably 40% by mass or less, more preferably 30% by mass or less, even more preferably 15% by mass or less, and particularly preferably 10% by mass or less. That is, the total content of the dyes (preferably the dyes A to D) in the wavelength selective absorption layer is preferably 0.10 to 50 mass%, more preferably 0.15 to 40 mass%, even more preferably 0.20 to 30 mass%, particularly preferably 0.25 to 15 mass%, and especially preferably 0.30 to 10 mass%.

[0184] The contents of each of dyes A to D that can be contained in the wavelength selective absorption layer are preferably as follows: The content of dye A in the wavelength selective absorption layer is preferably 0.01 to 45% by mass, and more preferably 0.1 to 30% by mass. The content of dye B in the wavelength selective absorption layer is preferably 0.01 to 45% by mass, and more preferably 0.1 to 30% by mass. The content of dye C in the wavelength selective absorption layer is preferably 0.01 to 30% by mass, and more preferably 0.1 to 10% by mass. The content of dye D in the wavelength selective absorption layer is preferably 0.05 to 50% by mass, and more preferably 0.2 to 40% by mass. When the wavelength selective absorption layer contains all of the four dyes A to D, the content ratio of the dyes A to D in the wavelength selective absorption layer is, in mass ratio, preferably dye A:dye B:dye C:dye D=1:0.1-10:0.05-5:0.1-10, and more preferably 1:0.2-5:0.1-3:0.2-5.

[0185] When at least one of the dyes B and C is a dye containing a quencher, the content of the dye containing a quencher is preferably 0.1% by mass or more relative to 100% by mass of the wavelength selective absorption layer in terms of antireflection effect. The upper limit is preferably 45% by mass or less. That is, it is preferably 0.1 to 45% by mass.

[0186] <Resin> The resin (hereinafter also referred to as "matrix resin") contained in the wavelength selective absorption layer is not particularly limited as long as it can disperse (preferably dissolve) the dye. Among these, a resin that can satisfactorily suppress external light reflection and brightness reduction, and that can maintain the original color of the image of the OLED display device at an excellent level, is preferred. When at least one of dyes B and C is a squaraine dye represented by the above-mentioned general formula (1), the matrix resin is preferably a low-polarity matrix resin that allows this squaraine dye to exhibit a sharper absorption. By the squaraine dye exhibiting a sharper absorption, the above-mentioned relational expressions (I) to (VI) can be satisfied at a preferred level, and the original color of the image of the OLED display device can be maintained at an excellent level. Here, low polarity preferably means that the fd value defined by the following relational expression I is 0.50 or more. Relational formula I: fd = δd / (δd + δp + δh) In Relational formula I, δd, δp, and δh respectively represent a term corresponding to the London dispersion force, a term corresponding to the dipole-dipole force, and a term corresponding to the hydrogen bonding force, relative to the solubility parameter δt calculated by the Hoy method. A specific calculation method will be described later. That is, fd represents the ratio of δd to the sum of δd, δp, and δh. By setting the fd value to 0.50 or more, it becomes easier to obtain a sharper absorption waveform. Furthermore, when the wavelength selective absorption layer contains two or more types of matrix resins, the fd value is calculated as follows: fd = Σ(w ｉ ・fd ｉ ) where w ｉ is the mass fraction of the i-th matrix resin, fd ｉ indicates the fd value of the i-th matrix resin.

[0187] - The term δd corresponding to the London dispersion force - The term δd corresponding to the London dispersion force is described in the literature "Properties of Polymers 3 ｒｄ , ELSEVIER, (1990) pages 214-220, column "2) Method of Hoy (1985, 1989)" and is calculated according to the description in the above column of the above document.

[0188] - The term δp corresponding to the dipole-dipole force - The term δp corresponding to the dipole-dipole force is described in the literature "Properties of Polymers 3 ｒｄ , ELSEVIER, (1990) pp. 214-220, column "2) Method of Hoy (1985, 1989)" and is calculated according to the description in the above column of the above document.

[0189] - Term δh corresponding to hydrogen bonding strength - The term δh corresponding to hydrogen bonding strength is ｒｄ , ELSEVIER, (1990) pp. 214-220, column "2) Method of Hoy (1985, 1989)" and is calculated according to the description in the above column of the above document.

[0190] Furthermore, if the matrix resin is a resin exhibiting a certain degree of hydrophobicity, the moisture content of the wavelength selective absorption layer can be made low, for example, 0.5% or less, which is preferable from the viewpoint of improving the light resistance of the light absorption filter of the present invention including the wavelength selective absorption layer (excluding the light absorbing and disappearing layer). Note that the resin may contain any conventional component in addition to the polymer. However, the fd of the matrix resin is a calculated value for the polymer constituting the matrix resin.

[0191] Preferred examples of the matrix resin include polystyrene resin and cyclic polyolefin resin, with polystyrene resin being more preferred. Typically, the fd value of polystyrene resin is 0.45 to 0.60, and the fd value of cyclic polyolefin resin is 0.45 to 0.70. As mentioned above, it is preferable to use a resin with an fd value of 0.50 or greater. In addition to these preferred resins, it is also preferable to use resin components that impart functionality to the wavelength-selective absorption layer, such as the extensible resin component and release-controlling resin component described below. That is, in the present invention, the term "matrix resin" is used to include the extensible resin component and release-controlling resin component in addition to the resins described above. It is preferable that the matrix resin contain polystyrene resin in order to sharpen the absorption waveform of the dye.

[0192] (Polystyrene Resin) The polystyrene contained in the polystyrene resin refers to a polymer containing a styrene component. The polystyrene preferably contains 50% by mass or more of the styrene component. The wavelength selective absorption layer may contain one type of polystyrene or two or more types. Here, the styrene component is a structural unit derived from a monomer having a styrene skeleton in its structure. In order to control the photoelastic coefficient and hygroscopicity to values ​​within a preferred range for the wavelength selective absorption layer, the polystyrene preferably contains 70% by mass or more of the styrene component, and even more preferably 85% by mass or more. It is also preferable that the polystyrene is composed only of a styrene component. The polystyrene resin described in paragraphs

[0106] to

[0110] of WO 2023 / 228799 can be applied as is to the polystyrene resin.

[0193] The wavelength-selective absorption layer preferably contains a polyphenylene ether resin in addition to the polystyrene resin. By incorporating both a polystyrene resin and a polyphenylene ether resin, the toughness of the wavelength-selective absorption layer can be improved, and the occurrence of defects such as cracks can be suppressed even in harsh environments such as high temperature and high humidity. Examples of the polyphenylene ether resin include Zylon S201A, S202A, and S203A (all trade names) manufactured by Asahi Kasei Corporation. Alternatively, a resin prepared by pre-mixing polystyrene resin and polyphenylene ether resin may be used. Examples of mixed resins of polystyrene resin and polyphenylene ether resin include Zylon 1002H, Zylon 1000H, Zylon 600H, Zylon 500H, Zylon 400H, Zylon 300H, and Zylon 200H (all trade names) manufactured by Asahi Kasei Corporation. When the wavelength selective absorption layer contains a polystyrene resin and a polyphenylene ether resin, the mass ratio of the two, polystyrene resin / polyphenylene ether resin, is preferably 99 / 1 to 50 / 50, more preferably 98 / 2 to 60 / 40, and even more preferably 95 / 5 to 70 / 30. By setting the blending ratio of the polyphenylene ether resin within the above preferred range, the wavelength selective absorption layer has sufficient toughness, and when solution film formation is performed, the solvent can be appropriately volatilized.

[0194] (Cyclic Polyolefin Resin) The cyclic olefin compound forming the cyclic polyolefin contained in the cyclic polyolefin resin (also referred to as polycycloolefin resin) is not particularly limited as long as it has a ring structure containing a carbon-carbon double bond, and examples thereof include norbornene compounds, monocyclic olefin compounds other than norbornene compounds, cyclic conjugated diene compounds, and vinyl alicyclic hydrocarbon compounds. Examples of cyclic polyolefins include (1) polymers containing structural units derived from norbornene compounds, (2) polymers containing structural units derived from monocyclic olefin compounds other than norbornene compounds, (3) polymers containing structural units derived from cyclic conjugated diene compounds, (4) polymers containing structural units derived from vinyl alicyclic hydrocarbon compounds, and hydrogenated polymers containing structural units derived from each of the compounds (1) to (4). In the present invention, polymers containing structural units derived from norbornene compounds and polymers containing structural units derived from monocyclic olefin compounds include ring-opened polymers of each compound. As the cyclic polyolefin resin, the description of the cyclic polyolefin resin described in paragraphs

[0112] to

[0125] of WO 2023 / 228799 can be applied as is.

[0195] The resins described above in the section on the light-absorbing and disappearing layer can also be preferably used as the resin for the wavelength-selective absorption layer.

[0196] The wavelength-selective absorption layer preferably contains 5% by mass or more of the matrix resin, more preferably 20% by mass or more, even more preferably 50% by mass or more, particularly preferably 70% by mass or more, and most preferably 80% by mass or more. The content of the matrix resin in the wavelength-selective absorption layer is usually 99.90% by mass or less, preferably 99.85% by mass or less. That is, the content is preferably 5 to 99.90% by mass, more preferably 20 to 99.90% by mass, even more preferably 50 to 99.90% by mass, particularly preferably 70 to 99.90% by mass, and most preferably 80 to 99.85% by mass.

[0197] (Extensible Resin Component) The wavelength selective absorption layer can contain an appropriately selected component exhibiting extensibility (also referred to as an extensible resin component) as a resin component. Specific examples include acrylonitrile-butadiene-styrene resin (ABS resin), styrene-butadiene resin (SB resin), isoprene resin, butadiene resin, polyether-urethane resin, and silicone resin. These resins may also be hydrogenated as appropriate. As the extensible resin component, it is preferable to use an ABS resin or an SB resin, and it is more preferable to use an SB resin.

[0198] The SB resin may be, for example, a commercially available product, such as TR2000, TR2003, TR2250 (all trade names, manufactured by JSR Corporation), Clearene 210M, 220M, 730V (all trade names, manufactured by Denka Company Limited), Asaflex 800S, 805, 810, 825, 830, 840 (all trade names, manufactured by Asahi Kasei Corporation), and Eporex SB2400, SB2610, SB2710 (all trade names, manufactured by Sumitomo Chemical Co., Ltd.).

[0199] The wavelength selective absorption layer preferably contains 15 to 95% by mass, more preferably 20 to 50% by mass, and even more preferably 25 to 45% by mass of the extensible resin component in the matrix resin.

[0200] As the extensible resin component, when a sample having a thickness of 30 μm and a width of 10 mm is prepared using the extensible resin component alone and the breaking elongation at 25° C. is measured in accordance with JIS 7127, the extensible resin component preferably exhibits a breaking elongation of 10% or more, more preferably 20% or more.

[0201] <Other Components> The light-absorbing and dissipating layer and wavelength-selective absorption layer of the present invention may contain a leveling agent (surfactant) and the like in addition to the above-mentioned components (dye, resin, and in the light-absorbing and dissipating layer, further a radical generator).

[0202] (Leveling Agent) The light-absorbing and dissipating layer and the wavelength-selective absorbing layer may each appropriately contain a leveling agent (surfactant). Commonly used compounds can be used as the leveling agent, with fluorine-containing surfactants being particularly preferred. Specific examples include the compounds described in paragraphs

[0028] to

[0056] of JP-A No. 2001-330725. Preferred examples include copolymers comprising a structural unit having a fluorine-substituted alkyl group and a structural unit derived from a (meth)acrylic acid alkyl ester in the copolymer represented by formula (IV) described in paragraph

[0054] of JP-A No. 2001-330725. Commercially available products include the Megafac F (trade name) series manufactured by DIC Corporation. The content of the leveling agent in the light-absorbing and dissipating layer or the wavelength-selective absorbing layer can be adjusted appropriately depending on the purpose.

[0203] The light-absorbing and dissipating layer and the wavelength-selective absorption layer may each contain, in addition to the above components, a low-molecular-weight plasticizer, an oligomer-based plasticizer, a retardation adjuster, an ultraviolet absorber, a deterioration inhibitor, a peeling promoter, an infrared absorber, an antioxidant, a filler, a compatibilizer, and the like.

[0204] (Matting Agent) Fine particles may be added to the surface of the light-absorbing filter of the present invention to impart slipperiness and prevent blocking. These fine particles may be silica (silicon dioxide, SiO ) whose surface is coated with hydrophobic groups and which is in the form of secondary particles. ２ ) is preferably used. As the fine particles, fine particles such as titanium dioxide, aluminum oxide, zirconium oxide, calcium carbonate, talc, clay, calcined kaolin, calcined calcium silicate, hydrated calcium silicate, aluminum silicate, magnesium silicate, and calcium phosphate may be used together with or instead of silica. Examples of commercially available fine particles include R972 and NX90S (both manufactured by Nippon Aerosil Co., Ltd., trade names).

[0205] These fine particles function as a so-called matting agent, and by adding the fine particles, minute irregularities are formed on the surface of the light-absorbing filter of the present invention, and these irregularities prevent the light-absorbing filters of the present invention from sticking together, or even when the light-absorbing filter of the present invention is overlapped with another film, etc., and ensure smoothness. When the light-absorbing filter of the present invention contains a matting agent as fine particles, the minute irregularities caused by the protrusions of the fine particles protruding from the filter surface have a height of 30 nm or more in 10 ４ pieces / mm ２ When the above amount is present, the effect of improving the slipperiness and blocking properties is particularly great.

[0206] Methods for applying fine particles to the surface layer of the light-absorbing filter of the present invention include means such as multilayer casting and coating. The content of the matting agent in the light-absorbing filter of the present invention is appropriately adjusted depending on the purpose. The matting agent (fine particles) added to the surface of the light-absorbing filter of the present invention (also referred to as application to the surface layer) remains present on the surface of the optical filter of the present invention obtained using the light-absorbing filter of the present invention, and can prevent the optical filters of the present invention from sticking to each other when they are overlapped, or when the optical filter of the present invention is overlapped with other films, etc.

[0207] <Method for manufacturing a light-absorbing filter> (Method for manufacturing a light-absorbing and dissipating layer and a wavelength-selective absorbing layer) The light-absorbing and dissipating layer and the wavelength-selective absorbing layer in the light-absorbing filter of the present invention can be manufactured by a conventional method, such as a solution film-forming method, a melt extrusion method, or a method of forming a coating layer on a substrate film (support film) by any method (coating method), and stretching can also be combined as appropriate. The light-absorbing and dissipating layer and the wavelength-selective absorbing layer in the light-absorbing filter of the present invention are preferably manufactured by a coating method. As the solution film-forming method and the melt extrusion method, the descriptions of the solution film-forming method and the melt extrusion method in

[0197] to

[0203] of WO 2021 / 132674 can be applied as they are, except that "light-absorbing filter" is replaced with "light-absorbing and dissipating layer" or "wavelength-selective absorbing layer".

[0208] (Coating Method) In the coating method, a solution of the material of the light-absorbing and disappearing layer or the wavelength-selective absorption layer is applied to a support film to form a coating layer. A release agent or the like may be applied in advance to the surface of the support film as appropriate to control adhesion to the coating layer. The coating layer may also be formed on the support film via an optional resin layer. The coating layer can be used by laminating it with another member via an adhesive layer in a later step and then peeling off the support film. Any adhesive can be used as the adhesive constituting the adhesive layer. The support film can be stretched together with the solution of the material of the light-absorbing and disappearing layer or the wavelength-selective absorption layer, as appropriate, in a state where the solution is applied to the support film or the coating layer is laminated on the support film.

[0209] The solvent used in the solution of the material for the light-absorbing and disappearing layer or the wavelength-selective absorption layer can be appropriately selected from the viewpoints of being able to dissolve or disperse the material for the light-absorbing and disappearing layer or the wavelength-selective absorption layer, being able to easily form a uniform surface in the coating and drying steps, being able to ensure the storage stability of the liquid, having an appropriate saturated vapor pressure, etc.

[0210] -Addition of Components Constituting the Light-Absorbing and Disappearing Layer or the Wavelength-Selective Absorption Layer- The timing of adding the dye and the radical generator to the material for the light-absorbing and disappearing layer is not particularly limited, as long as they are added at the time of film formation. For example, they may be added at the time of synthesis of the polymer constituting the matrix resin, or they may be mixed with the material for the light-absorbing and disappearing layer when preparing a coating solution for the material for the light-absorbing and disappearing layer. Note that, when the radical generator contains a combination of Compound A and Compound B, and Compound A is bonded to the polymer constituting the resin, Compound A is added when the polymer constituting the resin is added. The timing of adding the dye to the material for the wavelength-selective absorption layer is not particularly limited, as long as they are added at the time of film formation. For example, they may be added at the time of synthesis of the polymer constituting the resin, or they may be mixed with the material for the wavelength-selective absorption layer when preparing a coating solution for the material for the wavelength-selective absorption layer.

[0211] -Support Film- The support film used to form the light-absorbing and disappearing layer or the wavelength-selective absorbing layer by a coating method or the like preferably has a film thickness of 5 to 100 μm, more preferably 10 to 75 μm, and even more preferably 15 to 55 μm. When the film thickness is equal to or greater than the above-mentioned preferable lower limit, sufficient mechanical strength is easily ensured, and defects such as curling, wrinkling, and buckling are less likely to occur. Furthermore, when the film thickness is equal to or less than the above-mentioned preferable upper limit, when a multilayer film comprising a light-absorbing and disappearing layer or a wavelength-selective absorbing layer and a support film, or a multilayer film comprising a light-absorbing and disappearing layer, a wavelength-selective absorbing layer, and a support film, is stored, for example, in the form of a long roll, the surface pressure applied to the multilayer film can be easily adjusted to an appropriate range, and adhesion defects are less likely to occur.

[0212] The surface energy of the support film is not particularly limited, but by adjusting the relationship between the surface energy of the material and coating solution of the light-absorbing and dissipating layer or wavelength-selective absorption layer and the surface energy of the surface of the support film on which the light-absorbing and dissipating layer or wavelength-selective absorption layer is formed, the adhesive strength between the light-absorbing filter of the present invention and the support film can be adjusted. If the difference in surface energy is reduced, the adhesive strength tends to increase, and if the difference in surface energy is increased, the adhesive strength tends to decrease, and can be set appropriately.

[0213] In addition, the surface unevenness of the support film is not particularly limited, but can be adjusted according to the relationship between the surface energy, hardness, and surface unevenness of the surface opposite to the support film in the light-absorbing filter of the present invention, and the surface energy and hardness of the surface opposite to the side where the light-absorbing filter of the present invention is formed of the support film, for example, for the purpose of preventing adhesion failure when storing the multilayer film of the light-absorbing filter of the present invention and the support film in a long roll form.If the surface unevenness is made larger, adhesion failure tends to be suppressed, and if the surface unevenness is made smaller, the surface unevenness of the light-absorbing filter of the present invention tends to be reduced, and the haze of the light-absorbing filter of the present invention tends to be reduced, and can be set appropriately.

[0214] Any material or film can be used as the support film. Specific examples of the material include polyester polymers (including polyethylene terephthalate), olefin polymers, cycloolefin polymers, (meth)acrylic polymers, cellulose polymers, and polyamide polymers. Furthermore, the support film can be subjected to a surface treatment to adjust its surface properties. For example, corona treatment, room temperature plasma treatment, saponification treatment, etc. can be performed to reduce the surface energy, and silicone treatment, fluorine treatment, olefin treatment, etc. can be performed to increase the surface energy.

[0215] (Diffusion-Preventing Layer) The light-absorbing filter of the present invention preferably has a wavelength-selective absorption layer, a diffusion-preventing layer, and a light-absorbing / dissipating layer laminated in this order so that they are in direct contact with each other. The diffusion-preventing layer, when provided between the wavelength-selective absorption layer and the light-absorbing / dissipating layer, has the effect of suppressing the diffusion of components such as dyes contained in the wavelength-selective absorption layer into the light-absorbing / dissipating layer, and has the effect of suppressing the diffusion of components such as dyes and radical generators contained in the light-absorbing / dissipating layer into the wavelength-selective absorption layer. The diffusion of components in the wavelength-selective absorption layer into the light-absorbing / dissipating layer can occur both when the wavelength-selective absorption layer is formed on the light-absorbing / dissipating layer and when the wavelength-selective absorption layer is formed on the light-absorbing / dissipating layer. The diffusion of components in the light-absorbing / dissipating layer into the wavelength-selective absorption layer can occur both when the light-absorbing / dissipating layer is formed on the wavelength-selective absorption layer and when the light-absorbing / dissipating layer is formed on the wavelength-selective absorption layer. By providing a diffusion-inhibiting layer between the wavelength-selective absorption layer and the light-absorbing / dissipating layer, the light-absorbing filter of the present invention can suppress the diffusion of components in the wavelength-selective absorption layer into the light-absorbing / dissipating layer and the diffusion of components in the light-absorbing / dissipating layer into the wavelength-selective absorption layer, as described above. This allows the fading and decolorization reaction of the dye in the light-absorbing / dissipating layer due to ultraviolet irradiation of the light-absorbing filter of the present invention to be carried out as a fading and decolorization reaction of the dye in the light-absorbing / dissipating layer caused by a compound in the light-absorbing / dissipating layer that generates radicals upon ultraviolet irradiation. By providing a diffusion-inhibiting layer, the optical filter of the present invention obtained using the light-absorbing filter of the present invention can more effectively achieve the desired light absorption characteristics derived from the wavelength-selective absorption layer and the light-absorbing / dissipating layer, respectively.

[0216] In a configuration in which the wavelength-selective absorption layer, the diffusion-preventing layer, and the light-absorbing / dissipating layer are laminated in this order in direct contact with each other, when the light-absorbing / dissipating layer is formed on the diffusion-preventing layer or when the wavelength-selective absorption layer is formed on the diffusion-preventing layer, the diffusion-preventing layer is swelled by the solvent (solvent) in the coating solution for forming the light-absorbing / dissipating layer or the wavelength-selective absorption layer, which is thought to have a significant effect on the increase in free volume in the diffusion-preventing layer. From this perspective, in the light-absorbing filter of the present invention, it is preferable that the resin constituting the diffusion-preventing layer provided between the wavelength-selective absorption layer and the light-absorbing / dissipating layer has low affinity for the solvent used when forming the wavelength-selective absorption layer or the light-absorbing / dissipating layer on the diffusion-preventing layer. For example, when forming the light-absorbing / dissipating layer on the diffusion-preventing layer, if the components contained in the light-absorbing / dissipating layer, such as dyes and compounds that generate radicals upon ultraviolet irradiation, are materials that dissolve in organic solvents (non-aqueous solvents), it is preferable that the resin constituting the diffusion-preventing layer has low affinity for organic solvents, i.e., a water-soluble resin. Furthermore, when forming a wavelength-selective absorption layer on a diffusion-preventing layer, if the dye or other component contained in the wavelength-selective absorption layer is a material that dissolves in an organic solvent (non-aqueous solvent), the resin that constitutes the diffusion-preventing layer is preferably a resin that has low affinity for the organic solvent, i.e., a water-soluble resin. The affinity between the solvent used in forming the wavelength-selective absorption layer or the light-absorbing / dissipating layer and the resin that constitutes the diffusion-preventing layer can be evaluated by the solubility parameter δt calculated by the Hoy method. The solubility parameter δt can be calculated, for example, from the literature "Properties of Polymers 3" ｒｄ, ELSEVIER, (1990)”, pages 214-220, column "2) Method of Hoy (1985, 1989)". In the present invention, the absolute value of the difference between the δt value of the solvent used in forming the wavelength-selective absorption layer or the light-absorbing and disappearing layer and the δt value of the resin constituting the diffusion-preventing layer is preferably 1.0 or more, more preferably 2.0 or more, even more preferably 3.0 or more, and particularly preferably 4.0 or more. By adjusting the absolute value of the difference between the δt value of the solvent used when forming the wavelength-selective absorption layer or the light-absorbing and dissipating layer and the δt value of the resin constituting the diffusion-inhibiting layer to be equal to or greater than the above-mentioned preferred value, when the liquid that forms the wavelength-selective absorption layer or the light-absorbing and dissipating layer is applied onto the diffusion-inhibiting layer, the solvent contained in the liquid that forms the wavelength-selective absorption layer or the light-absorbing and dissipating layer is prevented from penetrating the diffusion-inhibiting layer, and swelling of the layer located below the diffusion-inhibiting layer (the light-absorbing and dissipating layer when the wavelength-selective absorption layer is provided on the diffusion-inhibiting layer, or the wavelength-selective absorption layer when the light-absorbing and dissipating layer is provided on the diffusion-inhibiting layer) is effectively suppressed, which is preferable. The upper limit of the absolute value of the difference between the δt value of the solvent used when forming the wavelength-selective absorption layer or the light-absorbing and dissipating layer and the δt value of the resin constituting the diffusion-preventing layer is practically 20.0 or less, and the absolute value of the difference between the δt value of the solvent used when forming the wavelength-selective absorption layer or the light-absorbing and dissipating layer and the δt value of the resin constituting the diffusion-preventing layer is preferably 1.0 to 20.0, more preferably 2.0 to 20.0, even more preferably 3.0 to 20.0, and particularly preferably 4.0 to 20.0. When two or more solvents are used when forming the wavelength-selective absorption layer or the light-absorbing and dissipating layer, the δt value of the solvent means the weight average value of the δt values ​​of each solvent. Furthermore, when the diffusion-preventing layer is composed of two or more resins, the δt value of the resin means the weight average value of each resin.

[0217] (Resin) The resin constituting the diffusion-preventing layer is preferably a water-soluble resin. The water-soluble resin may be either a thermosetting resin or a thermoplastic resin, and in the case of a thermoplastic resin, it may be crystalline or amorphous. For example, polyvinyl alcohol, polyvinylpyridine, (meth)acrylic resin, polyurethane, polyester, epoxy resin, cellulose resin, etc. can be preferably used as the water-soluble resin. At least a portion of these water-soluble resins may be modified. The polyvinyl alcohol may be modified or unmodified. Examples of modified polyvinyl alcohol include modified polyvinyl alcohols into which groups such as acetoacetyl groups and carboxy groups have been introduced. The saponification degree of the polyvinyl alcohol is preferably 60.0 mol% or more, more preferably 80.0 mol% or more, and even more preferably 90.0 mol% or more, from the viewpoint of further improving the barrier properties (permeation suppression performance) of organic solvents. There is no particular upper limit, but 99.99 mol% or less is practical. The saponification degree of the polyvinyl alcohol is a value calculated based on the method described in JIS K 6726 (1994). The (meth)acrylic resin may be any resin containing at least one of a structural unit derived from (meth)acrylic acid and a structural unit derived from a (meth)acrylic acid ester, with a resin containing a structural unit derived from (meth)acrylic acid being preferred. The proportion of structural units derived from (meth)acrylic acid relative to all structural units constituting the (meth)acrylic resin is preferably 70 to 100 mol%, more preferably 80 to 100 mol%, and even more preferably 90 to 100 mol%. In particular, the resin constituting the diffusion-preventing layer is preferably at least one of polyvinyl alcohol and a (meth)acrylic resin, and more preferably at least one of polyvinyl alcohol and poly(meth)acrylic acid, from the viewpoint of achieving excellent adhesion between the layers constituting the light-absorbing filter of the present invention.The content of the resin (preferably a water-soluble resin) in the diffusion-preventing layer is, for example, preferably 90% by mass or more, more preferably 95% by mass or more. There is no particular upper limit, but it can be 100% by mass.

[0218] The thickness of the diffusion-preventing layer is preferably 0.1 to 5.0 μm, more preferably 0.2 to 4.0 μm, from the viewpoint of further improving the diffusion-preventing ability.

[0219] (Manufacturing method of diffusion-preventing layer) The method of forming the diffusion-preventing layer is not particularly limited, for example, by conventional methods, any casting method such as spin coating and slit coating can be used to form the diffusion-preventing layer on the wavelength-selective absorption layer or the light-absorbing and dissipating layer.The solvent used in this case can be used without any particular limitation as long as it can obtain the desired diffusion-preventing layer.For example, when the resin constituting the diffusion-preventing layer is a water-soluble resin, it is preferable to use water-soluble solvents such as water; alcohols such as ethanol and isopropyl alcohol.

[0220] <Film Thickness of the Light-Absorbing and Disappearing Layer and the Wavelength-Selective Absorbing Layer> The film thicknesses of the light-absorbing and disappearing layer and the wavelength-selective absorbing layer are not particularly limited, but are preferably 1 to 18 μm, more preferably 1 to 12 μm, and even more preferably 1 to 8 μm. When the film thickness is below the preferred upper limit, adding a high concentration of dye to a thin film can suppress a decrease in polarization degree due to fluorescence emitted by the dye (pigment). Furthermore, the effect of the quencher is easily exhibited in the light-absorbing and disappearing layer. On the other hand, when the film thickness is above the preferred lower limit, it becomes easier to maintain uniformity of in-plane absorbance. In the present invention, a film thickness of 1 to 18 μm means that the thickness of the light-absorbing and disappearing layer and the thickness of the wavelength-selective absorbing layer are within the range of 1 to 18 μm, regardless of the position at which they are measured. This also applies to film thicknesses of 1 to 12 μm and 2 to 8 μm. The film thickness can be measured using an electronic micrometer (e.g., manufactured by Anritsu Corporation).

[0221] <Absorbance of the Light-Absorbing Filter of the Present Invention> In the light-absorbing filter of the present invention, the absorbance at the wavelength showing maximum absorption in the wavelength range of 400 to 700 nm (hereinafter simply referred to as "Ab(λ ｍａｘThe largest absorbance among these is preferably 0.3 or more, more preferably 0.5 or more, and even more preferably 0.7 or more. However, the absorbance of the light-absorbing filter of the present invention can be adjusted by the type of dye, the amount added, or the film thickness.

[0222] <Decolorization rate of light-absorbing and dissipating layer> The light-absorbing and dissipating layer in the light-absorbing filter of the present invention preferably has a decolorization rate of 85% or more, more preferably 87% or more, and even more preferably 90% or more, when irradiated with ultraviolet light at 25°C. There is no particular upper limit, and 100% is also preferable. That is, the decolorization rate is preferably 85 to 100%, more preferably 87 to 100%, and even more preferably 90 to 100%. The decolorization rate is determined by the change in Ab(λ) before and after the ultraviolet light irradiation test. ｍａｘ ) is calculated by the following formula: Decolorization rate (%) = 100 - (Ab(λ) after ultraviolet irradiation) ｍａｘ ) / Ab(λ ｍａｘ )) × 100 Here, the ultraviolet irradiation test is carried out under atmospheric pressure (101.33 kPa) using an ultra-high pressure mercury lamp (for example, manufactured by HOYA Corporation, product name: UL750) at an illuminance of 100 mW / cm ２ , irradiation amount 2000mJ / cm ２ The light-absorbing filter is irradiated with ultraviolet light at room temperature (45° C.) The absorbance, ultraviolet irradiation test, and decolorization rate can be measured and calculated by the methods described in the Examples.

[0223] Furthermore, it is preferable that the light-absorbing and dissipative layer hardly generates absorption (secondary absorption) derived from a new colored structure accompanying decomposition of the dye. For example, the presence or absence of absorption derived from a new colored structure accompanying decomposition of the dye can be determined by the above Ab(λ ｍａｘ The specific wavelength is selected at which the dye before UV irradiation shows almost no absorption and at which new absorption due to decomposition of the dye is observed. As a specific example, as described in the Examples below, the presence or absence of absorption due to the new colored structure accompanying decomposition of the dye can be confirmed based on the ratio of the absorbance at the specific wavelength to the absorbance at the specific wavelength Ab(λ ｍａｘThe specific wavelength is selected at which the dye before UV irradiation shows almost no absorption and at which new absorption due to decomposition of the dye is observed. As a specific example, as described in the Examples below, the presence or absence of absorption due to a new colored structure accompanying decomposition of the dye can be confirmed based on the ratio of the absorbance at the specific wavelength to the Ab(λ ｍａｘ The absorbance at a wavelength of 450 nm (hereinafter also referred to simply as "Ab(450)") to the ... ｍａｘ )) × 100% (II) (Ab(450) after ultraviolet irradiation / Ab(λ) before ultraviolet irradiation ｍａｘ )) × 100% The presence or absence of absorption due to a new colored structure accompanying the decomposition of the dye can be confirmed by measurement and calculation using the method described in the Examples. Alternatively, the absorbance at a wavelength of 650 nm (hereinafter also referred to simply as "Ab(650)") can be used instead of the absorbance at a wavelength of 450 nm, and the evaluation can also be performed using the value obtained by subtracting the ratio of the following (III) from the ratio of the following (IV). The preferred range of the value obtained by subtracting the ratio of the following (III) from the ratio of the following (IV) is the same as the value obtained by subtracting the ratio of (I) from the ratio of the above formula (II). (III) (Ab(650) before ultraviolet irradiation / Ab(λ ｍａｘ )) × 100% (IV) (Ab(650) after ultraviolet irradiation / Ab(λ) before ultraviolet irradiation ｍａｘ )) × 100% Here, the ultraviolet irradiation test can be preferably performed in the same manner as described above for the quenching rate. The presence or absence of absorption due to the new colored structure accompanying the decomposition of the dye can be measured and calculated by the method described in the Examples.

[0224] The light-absorbing and dissipating layer can exhibit excellent discoloration properties when the discoloration rate and the value for confirming the presence or absence of absorption due to a new colored structure accompanying decomposition of the dye both fall within preferred ranges.

[0225] In the optical filter obtained using the light-absorbing filter of the present invention, the portion of the light-absorbing and disappearing layer that has not been irradiated with ultraviolet light (the portion having the light-absorbing effect) has the Ab(λ ｍａｘ ) is preferably satisfied.

[0226] <Treatment of the Light-Absorbing Filter of the Present Invention> The light-absorbing filter of the present invention may be subjected to hydrophilization treatment by any of glow discharge treatment, corona discharge treatment, alkaline saponification treatment, etc., and corona discharge treatment is preferably used. It is also preferable to apply the methods disclosed in JP-A-6-094915 or JP-A-6-118232, etc.

[0227] The obtained film may be subjected to a heat treatment step, a superheated steam contact step, an organic solvent contact step, etc., as required. In addition, a surface treatment may be appropriately performed.

[0228] Furthermore, the pressure-sensitive adhesive layer may be a layer made of a pressure-sensitive adhesive composition having a base polymer such as a (meth)acrylic resin, a styrene resin, a silicone resin, or the like, to which a crosslinking agent such as an isocyanate compound, an epoxy compound, or an aziridine compound has been added. Preferably, the description of the pressure-sensitive adhesive layer in the OLED display device described below can be applied.

[0229] <Gas barrier layer> The light-absorbing filter of the present invention may have a gas barrier layer on at least one side. When the light-absorbing filter of the present invention has a gas barrier layer, the light-absorbing filter of the present invention can be a light-absorbing filter that achieves both excellent decolorization properties and excellent light resistance, and can be suitably used for producing an optical filter, which will be described later. The material for forming the gas barrier layer is not particularly limited, and examples thereof include organic materials (preferably crystalline resins) such as polyvinyl alcohol and polyvinylidene chloride, organic-inorganic hybrid materials such as sol-gel materials, SiO ２ , SiOｘ , SiON, SiN ｘ and Al ２ O ３ The gas barrier layer may be a single layer or a multilayer, and in the case of a multilayer, examples of the gas barrier layer include an inorganic dielectric multilayer film and a multilayer film in which organic materials and inorganic materials are alternately laminated.

[0230] The light-absorbing filter of the present invention has a gas barrier layer at least on the surface that will come into contact with air when the light-absorbing filter of the present invention (and further the optical filter of the present invention described below) is used, thereby making it possible to suppress a decrease in the absorption intensity of the dye in the light-absorbing filter of the present invention. As long as a gas barrier layer is provided on the interface of the light-absorbing filter of the present invention that comes into contact with air, the gas barrier layer may be provided on only one surface of the light-absorbing filter of the present invention or on both surfaces.

[0231] In particular, when the gas barrier layer contains a crystalline resin, the gas barrier layer contains a crystalline resin, has a layer thickness of 0.1 μm to 10 μm, and has an oxygen permeability of 60 cc / m ２ In the gas barrier layer, the "crystalline resin" is a resin that has a melting point at which it undergoes a phase transition from crystal to liquid when the temperature is increased, and is capable of imparting gas barrier properties related to oxygen gas to the gas barrier layer. ２ The "gas barrier layer having a gas barrier density of 1000 psi or less per 1000 psi day atm" is the same as the gas barrier layer described in paragraphs

[0180] to

[0184] of WO 2022 / 149510, and the descriptions therein can be applied as they are.

[0232] <Method for manufacturing gas barrier layer> The method for forming the gas barrier layer is not particularly limited, but may be a conventional method, for example, in the case of an organic material, a casting method such as spin coating or slit coating may be used. Also, a method of laminating a commercially available resin gas barrier film or a pre-prepared resin gas barrier film to the light-absorbing filter of the present invention may be used. Furthermore, in the case of an inorganic material, a plasma CVD (Plasma Enhanced Chemical Vapor Deposition) method, a sputtering method, a vapor deposition method, etc. may be used.

[0233] When providing the above-mentioned gas barrier layer on the light-absorbing filter of the present invention, for example, a method of directly forming the above-mentioned gas barrier layer on the light-absorbing filter of the present invention produced by the above-mentioned production method can be mentioned.In this case, it is also preferable to subject the surface of the light-absorbing filter of the present invention on which the gas barrier layer is to be provided to a corona treatment.In addition, when providing any optically functional film as described below, it is also preferable to attach it via an adhesive layer.For example, it is also preferable to provide a gas barrier layer on the light-absorbing filter of the present invention, and then further attach an optically functional film via an adhesive layer.

[0234] <Optical Functional Film> The light-absorbing filter of the present invention may appropriately have the gas barrier layer or any optical functional film as long as the effects of the present invention are not impaired. The optical properties and materials of the optional optical functional film are not particularly limited, but a film containing (or having as its main component) at least one of cellulose ester resin, acrylic resin, cyclic olefin resin, and polyethylene terephthalate resin can be preferably used. An optically isotropic film or an optically anisotropic retardation film may be used. As the optional optical functional film containing a cellulose ester resin, for example, Fujitac TD80UL (trade name, manufactured by Fujifilm Corporation) can be used. Examples of the optically functional film containing an acrylic resin include an optical film containing a (meth)acrylic resin containing a styrene-based resin as described in Japanese Patent No. 4,570,042, an optical film containing a (meth)acrylic resin having a glutarimide ring structure in the main chain as described in Japanese Patent No. 5,041,532, an optical film containing a (meth)acrylic resin having a lactone ring structure as described in Japanese Patent Laid-Open No. 2009-122664, and an optically functional film containing a (meth)acrylic resin having a glutaric anhydride unit as described in Japanese Patent Laid-Open No. 2009-139754. Examples of the optically functional film containing a cyclic olefin resin include a cyclic olefin resin film as described in paragraph

[0029] and subsequent paragraphs of Japanese Patent Laid-Open No. 2009-237376, and a cyclic olefin resin film containing an additive that reduces Rth as described in Japanese Patent No. 4,881,827 and Japanese Patent Laid-Open No. 2008-063536.

[0235] [Optical Filter] The optical filter of the present invention is obtained by a method including masked exposure of the light-absorbing filter of the present invention by ultraviolet irradiation. In the optical filter of the present invention, the layers derived from the wavelength-selective absorption layer and the light-absorbing-disappearing layer in the light-absorbing filter of the present invention will be referred to as the wavelength-selective absorption layer in the optical filter of the present invention and the light-absorbing-disappearing layer in the optical filter of the present invention, respectively. The light-absorbing-disappearing layer in the optical filter of the present invention has light-absorbing portions with a light-absorbing effect and portions where light-absorbency has been eliminated (light-absorbency-disappearing portions) according to the pattern of masked exposure by ultraviolet irradiation (hereinafter also referred to as "mask pattern"). On the other hand, the wavelength-selective absorption layer in the optical filter of the present invention has light-absorbing properties almost identical to those of the wavelength-selective absorption layer in the light-absorbing filter of the present invention, regardless of the masked exposure by ultraviolet irradiation. That is, by masked exposure of the light-absorbing filter of the present invention by ultraviolet irradiation, the masked portions of the light-absorbing filter of the present invention are not exposed and remain as light-absorbing portions with a light-absorbing effect, while the unmasked portions are exposed, and the light-absorbent-disappearing layer in the unmasked portions is discolored to become light-absorbency-disappearing portions, resulting in portions with low light absorption. The light-absorbing portion can exhibit a desired absorbance. Furthermore, the light-absorbing disappearing portion allows the light-absorbing disappearing layer to exhibit an excellent decolorization rate and hardly generates secondary absorption associated with dye decomposition, so that the light-absorbing disappearing layer in the optical filter of the present invention can exhibit optical properties that are close to colorless, and can exhibit light absorption properties specific to the wavelength-selective absorption layer in the optical filter of the present invention.

[0236] <Method for Manufacturing Optical Filter> The optical filter of the present invention can be obtained by irradiating the light-absorbing filter of the present invention with ultraviolet light and masked exposure. The mask pattern can be appropriately adjusted so as to obtain an optical filter of the present invention having a desired pattern composed of areas with high light absorption and areas with low light absorption. In particular, in the present invention, a mask pattern is preferably used such that areas corresponding to non-display areas (areas from which display light is not emitted) in the display device are areas with high light absorption, and areas corresponding to display areas (areas from which display light is emitted) in the display device are areas with low light absorption. That is, the optical filter of the present invention can be suitably obtained by irradiating the light-absorbing filter of the present invention with ultraviolet light using a mask pattern that masks areas corresponding to non-display areas in the display device and does not mask areas corresponding to display areas in the display device. In a display device, the area ratio of the non-display area to the display area of ​​the display device is typically 90 / 10 to 60 / 40 (non-display area of ​​the display device / display area of ​​the display device). From the viewpoint of achieving a higher level of suppression of external light reflection, suppression of reflected color, and suppression of brightness reduction, a ratio of 80 / 20 to 60 / 40 is preferred. Even in a display device having an area ratio of 90 / 10 between the non-display area of ​​the display device and the display area of ​​the display device, the optical filter of the present invention obtained by mask-exposing the light-absorbing and dissipative layer of the present invention, which includes the above-mentioned light-absorbing and dissipative layer, can be used to separately control the light absorption characteristics of the display area and the non-display area. This makes it possible to achieve a high level of both suppression of external light reflection, suppression of reflected color, and suppression of brightness reduction, and it is also believed possible to adjust the color of reflected light to a neutral tone. The UV irradiation conditions can be appropriately adjusted to obtain an optical filter of the present invention having a region with low light absorption. For example, the UV irradiation can be performed under atmospheric pressure (101.33 kPa), at a moderate temperature of 10 to 60°C, with a lamp output of 10 to 320 W / cm. Examples of lamps that can be used include air-cooled metal halide lamps and mercury lamps such as ultra-high pressure mercury lamps. The irradiation dose is 200 to 5000 mJ / cm.２ It can be said that:

[0237] The optical filter of the present invention may have an optically functional film as described in the light-absorbing filter of the present invention. The optical filter of the present invention may also have a layer containing an ultraviolet absorber. As the ultraviolet absorber, any commonly used compound can be used without any particular limitation, and examples thereof include the ultraviolet absorbers in the ultraviolet absorbing layer described below. The resin constituting the layer containing an ultraviolet absorber is also without any particular limitation, and examples thereof include the resins in the ultraviolet absorbing layer described below. The content of the ultraviolet absorber in the layer containing the ultraviolet absorber is appropriately adjusted depending on the purpose.

[0238] [Display Element Intermediate and Display Element] The display element intermediate of the present invention includes the light-absorbing filter of the present invention. As long as the display element intermediate of the present invention includes the light-absorbing filter of the present invention, other components may be those of display elements commonly used in display devices, without any particular limitations. Examples include OLED display elements, inorganic EL display elements, and liquid crystal cells (liquid crystal display elements) described below. In the display element intermediate of the present invention, the light-absorbing filter of the present invention and the display element may be laminated so as to be in direct contact with each other, or may be laminated via an adhesive layer. The adhesive layer may be described below with reference to the adhesive layer. Furthermore, in addition to the adhesive layer, an optional layer such as a barrier film may be laminated via an additional layer. Any layer commonly used in display elements, such as the barrier film, may be used as appropriate, and the barrier film may be described with reference to the gas barrier layer described above. In the display element intermediate of the present invention, a laminate structure may be used in which either the wavelength-selective absorption layer or the light-absorbing / disappearing layer in the light-absorbing filter of the present invention is close to the display element. In the display element intermediate of the present invention, it is preferable that the wavelength-selective absorption layer in the light-absorbing filter of the present invention be closer to the display element than the light-absorbing and dissipating layer, from the viewpoint of being able to discolor the light-absorbing and dissipating layer with a small amount of ultraviolet light irradiation. By exposing the display element intermediate of the present invention to ultraviolet light using a mask, the light-absorbing filter of the present invention contained in the display element intermediate of the present invention is converted into the optical filter of the present invention, thereby obtaining the display element of the present invention. In other words, the display element intermediate of the present invention is an intermediate product as a preliminary step to the display element of the present invention, and the display element of the present invention refers to a finished display element. The display element of the present invention may include any display element suitable for the display device to be incorporated. An element including an OLED display element will be referred to as the OLED display element of the present invention, an element including an inorganic EL display element will be referred to as the inorganic EL display element of the present invention, and an element including a liquid crystal display element will be referred to as the liquid crystal display element of the present invention.

[0239] [OLED Display Device] The organic electroluminescence display device of the present invention (also referred to as an organic EL (electroluminescence) display device or OLED (organic light-emitting diode) display device, and in the present invention, also abbreviated as an OLED display device) includes the optical filter of the present invention or the OLED display element of the present invention. As the OLED display device of the present invention, as long as it includes the optical filter of the present invention or the OLED display element of the present invention, the configuration of a commonly used OLED display device can be used without particular limitation as other configuration. The OLED display element of the present invention is incorporated into the OLED display device of the present invention so that the optical filter of the present invention is on the external light side. The configuration of the OLED display device of the present invention is not particularly limited, but when it includes the optical filter of the present invention, for example, a display device including, from the side opposite to the external light, glass, a layer including a TFT (thin film transistor), an OLED display element, a barrier film, an adhesive layer, the optical filter of the present invention, an adhesive layer, glass, an adhesive layer, and a surface film can be mentioned. Furthermore, when the OLED display element of the present invention is included, for example, a display device may include, in order from the side opposite to external light, glass, a layer including a TFT (thin film transistor), the OLED display element of the present invention, a barrier film, glass, an adhesive layer, and a surface film. The OLED display element has a configuration in which an anode electrode, a light-emitting layer, and a cathode electrode are laminated in this order. In addition to the light-emitting layer, a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, and the like are included between the anode electrode and the cathode electrode. For further information, see, for example, the description of JP 2014-132522 A. A resin film may also be used instead of the glass.

[0240] <Adhesive Layer> In the OLED display device of the present invention, the surface of the optical filter or OLED display element of the present invention facing external light may be bonded via an adhesive layer to glass, a barrier film, an optically functional film having an antireflection layer, or a polarizing plate including a polarizer and a polarizing plate protective film. Furthermore, the surface of the optical filter or OLED display element of the present invention facing the external light is preferably bonded via an adhesive layer to glass (substrate), a barrier film, or a layer including a TFT. Note that, when the OLED display element of the present invention has an adhesive layer on its outermost surface, the description of the adhesive layer above should be interpreted as a description of the adhesive layer on the outermost surface of the OLED display element of the present invention. The descriptions of the adhesive layer and the formation method in the OLED display device described in paragraphs

[0239] to

[0290] of WO 2021 / 132674 can be applied as is to the adhesive layer. In addition, the pressure-sensitive adhesive composition described in WO 2021 / 132674 preferably contains an ultraviolet absorber described later in terms of the light resistance of the optical filter and the optical filter contained in the OLED display element of the present invention.

[0241] <Substrate> In the OLED display device of the present invention, the optical filter of the present invention or the OLED display element of the present invention may be bonded to an optically functional film via a pressure-sensitive adhesive layer on the surface facing the external light side. Also, the optical filter of the present invention or the OLED display element of the present invention is preferably bonded to glass (substrate) via a pressure-sensitive adhesive layer on the surface facing the external light side.

[0242] The method for forming the pressure-sensitive adhesive layer is not particularly limited, and examples thereof include a method in which a pressure-sensitive adhesive composition is applied to the light-absorbing filter of the present invention, the optical filter of the present invention, or the OLED display element of the present invention using a conventional means such as a bar coater, followed by drying and curing; a method in which the pressure-sensitive adhesive composition is first applied to the surface of a release substrate, dried, and then the pressure-sensitive adhesive layer is transferred to the light-absorbing filter of the present invention, the optical filter of the present invention, or the OLED display element of the present invention using the release substrate, followed by aging and curing. The release substrate is not particularly limited, and any release substrate can be used, such as the support film used in the above-mentioned method for producing the light-absorbing filter of the present invention. In addition, the conditions for application, drying, aging, and curing can also be appropriately adjusted based on conventional methods.

[0243] [Inorganic Electroluminescence Display Device] The inorganic electroluminescence display device of the present invention (also referred to as an inorganic EL (electroluminescence) display device, and in the present invention, also abbreviated as inorganic EL display device) comprises the optical filter of the present invention or the inorganic EL display element of the present invention. The inorganic EL display element of the present invention is incorporated into the inorganic EL display device of the present invention so that the optical filter of the present invention is on the external light side. As long as the inorganic EL display device of the present invention comprises the optical filter of the present invention or the inorganic EL display element of the present invention, the other components may be any of the components of commonly used inorganic EL display devices without any particular limitations. For example, the inorganic EL element (inorganic EL display element) and inorganic electroluminescence display device described in JP-A-2005-338640 can be preferably applied.

[0244] [Liquid crystal display device] The liquid crystal display device of the present invention includes the optical filter of the present invention or the liquid crystal display element of the present invention. The liquid crystal display element of the present invention is incorporated into the liquid crystal display device of the present invention so that the optical filter of the present invention faces the external light side. The optical filter of the present invention may be used as at least one of a polarizing plate protective film and a pressure-sensitive adhesive layer, as described below, and may be included in a backlight unit used in a liquid crystal display device.

[0245] When the liquid crystal display device of the present invention includes the optical filter of the present invention, it preferably includes the optical filter of the present invention, a polarizing plate including a polarizer and a polarizing plate protective film, a pressure-sensitive adhesive layer, and a liquid crystal cell, and the polarizing plate is preferably attached to the liquid crystal cell via the pressure-sensitive adhesive layer. In this liquid crystal display device, the optical filter of the present invention may also serve as the polarizing plate protective film or the pressure-sensitive adhesive layer. That is, the liquid crystal display device can be divided into a case where it includes a polarizing plate including a polarizer and the optical filter of the present invention (polarizing plate protective film), a pressure-sensitive adhesive layer, and a liquid crystal cell, and a case where it includes a polarizing plate including a polarizer and a polarizing plate protective film, the optical filter of the present invention (pressure-sensitive adhesive layer), and a liquid crystal cell.

[0246] Fig. 1 is a schematic diagram showing an example of a liquid crystal display device of the present invention. In Fig. 1, the liquid crystal display device 10 comprises a liquid crystal cell having a liquid crystal layer 5 and a liquid crystal cell upper electrode substrate 3 and a liquid crystal cell lower electrode substrate 6 arranged above and below the liquid crystal layer 5, and an upper polarizing plate 1 and a lower polarizing plate 8 arranged on either side of the liquid crystal cell. A color filter layer may be laminated on the upper electrode substrate 3 or the lower electrode substrate 6. A backlight is arranged on the rear of the liquid crystal display device 10. The light source for the backlight can be the same as that described above for the backlight unit.

[0247] The upper polarizing plate 1 and the lower polarizing plate 8 each have a laminated structure in which a polarizer is sandwiched between two polarizing plate protective films. In the liquid crystal display device 10, at least one of the polarizing plates preferably includes the optical filter of the present invention. Furthermore, in the liquid crystal display device 10, the liquid crystal cell and the polarizing plate (upper polarizing plate 1 and / or lower polarizing plate 8) may be bonded together via an adhesive layer (not shown). In this case, the optical filter of the present invention may also serve as the adhesive layer. The liquid crystal display device 10 may be of a direct-view type, an image projection type, or an optical modulation type. The present invention is effective for active matrix liquid crystal displays using three-terminal or two-terminal semiconductor elements such as TFTs (Thin Film Transistors) or MIMs (Metal Insulator Metals). Of course, the present invention is also effective for passive matrix liquid crystal displays, typified by the STN (Super Twisted Nematic) mode, known as time-division driving. When the optical filter of the present invention is included in a backlight unit, the polarizing plate of the liquid crystal display device may be a normal polarizing plate (a polarizing plate not including the optical filter of the present invention) or a polarizing plate including the optical filter of the present invention, and the pressure-sensitive adhesive layer may be a normal pressure-sensitive adhesive layer (not including the optical filter of the present invention) or a pressure-sensitive adhesive layer including the optical filter of the present invention.

[0248] The IPS (In Plane Switching) mode liquid crystal display device described in paragraphs 0128 to 0136 of JP-A No. 2010-102296 is preferable as the liquid crystal display device of the present invention, except that it uses the optical filter of the present invention.

[0249] <Polarizing Plate> The polarizing plate used in the present invention includes a polarizer and at least one polarizing plate protective film. The polarizing plate used in the present invention preferably includes a polarizer and polarizing plate protective films on both sides of the polarizer, and preferably includes the optical filter of the present invention as a polarizing plate protective film on at least one side. In this case, a conventional polarizing plate protective film may be provided on the side of the polarizer opposite to the side having the optical filter of the present invention (polarizing plate protective film of the present invention). The thickness of the polarizing plate protective film is preferably 5 to 120 μm, more preferably 10 to 100 μm. A thinner film is preferred because it is less likely to cause display unevenness after aging at high temperature and high humidity when incorporated into a liquid crystal display device. On the other hand, a thicker film is preferred from the viewpoint of stable transport during film production and polarizing plate fabrication. When the optical filter of the present invention also serves as a polarizing plate protective film, the thickness of the optical filter preferably satisfies the above range. The polarizing plate used in the present invention can be the same as described in paragraphs

[0299] to

[0309] of International Publication No. 2021 / 132674, including the performance, shape, configuration, polarizer, lamination method of polarizer and polarizing plate protective film, and functionalization of polarizing plate.

[0250] <Adhesive Layer> In the liquid crystal display device of the present invention, the polarizing plate is preferably bonded to the liquid crystal cell via an adhesive layer. The optical filter of the present invention may also serve as the adhesive layer. When the optical filter of the present invention does not also serve as the adhesive layer, a conventional adhesive layer can be used as the adhesive layer. The adhesive layer is not particularly limited as long as it can bond the polarizing plate and the liquid crystal cell, but for example, an acrylic, urethane, polyisobutylene, etc. are preferred. When the optical filter of the present invention also serves as the adhesive layer, the wavelength-selective absorption layer of the optical filter of the present invention and the light-absorbing and dissipating layer of the optical filter of the present invention contain the base polymer in addition to the components contained in each layer (the resin and dye in the wavelength-selective absorption layer of the optical filter of the present invention, and the resin and dye in the light-absorbing and dissipating layer of the optical filter of the present invention), and further contain a crosslinking agent, coupling agent, etc. to impart adhesiveness. Note that, among the resins in the wavelength-selective absorption layer of the optical filter of the present invention and the resins in the light-absorbing and dissipating layer of the optical filter of the present invention, those that function as base polymers in the adhesive layer may also be used as base polymers. When the optical filter of the present invention also serves as a pressure-sensitive adhesive layer, each of the pressure-sensitive adhesive layers (the wavelength-selective absorption layer in the optical filter of the present invention and the light-absorbing and dissipating layer in the optical filter of the present invention) preferably contains the above-mentioned base polymer in an amount of 90% by mass or more and less than 100% by mass, and preferably in an amount of 95% by mass or more and less than 100% by mass. The dye content is as described above. The thickness of the pressure-sensitive adhesive layer is not particularly limited, but is preferably 1 to 50 μm, and more preferably 3 to 30 μm.

[0251] <Liquid Crystal Cell (Liquid Crystal Display Element)> The liquid crystal cell is not particularly limited, and a conventional one can be used.

[0252] When the liquid crystal display device of the present invention includes the liquid crystal display element of the present invention, the configuration of a conventional liquid crystal display device can be used in the above description of the liquid crystal display device, except that the liquid crystal display element of the present invention is used as the liquid crystal cell.

[0253] <Ultraviolet absorbing layer> The organic electroluminescent display device of the present invention, the inorganic electroluminescent display device of the present invention, and the liquid crystal display device of the present invention, each including the optical filter of the present invention or the display element of the present invention, preferably have a layer (hereinafter also referred to as "ultraviolet absorbing layer") that inhibits light absorption (ultraviolet absorption) of the compound that generates radicals upon ultraviolet irradiation on the viewer side of the optical filter of the present invention or the display element of the present invention. By providing the ultraviolet absorbing layer, it is possible to prevent fading of the optical filter of the present invention or the optical filter of the present invention included in the display element of the present invention due to external light. The ultraviolet absorbing layer used in the present invention will be described below.

[0254] (UV Absorber) The UV absorbing layer typically contains a resin and a UV absorber. Specific examples of UV absorbers preferably used in the present invention include hindered phenol compounds, benzophenone compounds such as hydroxybenzophenone compounds, benzotriazole compounds, salicylic acid ester compounds, cyanoacrylate compounds, and nickel complex compounds. Examples of hindered phenol compounds and benzotriazole compounds include the hindered phenol compounds and benzotriazole compounds described in paragraph

[0227] of WO 2023 / 234353, which can also be used suitably in the present invention. The amount of these UV absorbers added is preferably 0.1 to 30.0 parts by mass per 100 parts by mass of the resin.

[0255] In addition, from the viewpoint of further improving the light resistance of the optical filter of the present invention or the optical filter of the present invention contained in the display element of the present invention, it is also preferable to use the compound (1) represented by formula (1) described in paragraphs

[0229] to

[0283] of WO 2023 / 234353 as an ultraviolet absorber. Regarding the absorption characteristics, synthesis method, and content of the compound (1) represented by formula (1) described in WO 2023 / 234353, the description in paragraphs

[0279] to

[0283] of WO 2023 / 234353 can also be suitably used in the present invention.

[0256] (Resin) The resin used in the ultraviolet absorbing layer may be any known resin, and is not particularly limited as long as it does not deviate from the spirit of the present invention. Examples of the resin include cellulose acylate resin, acrylic resin, cycloolefin resin, polyester resin, and epoxy resin.

[0257] (Position of ultraviolet absorbing layer) The position of the ultraviolet absorbing layer is not particularly limited as long as it is on the viewer side of the optical filter of the present invention or the display element of the present invention, and it can be installed at any position. For example, it is possible to add an ultraviolet absorber to a member such as a protective film of a polarizing plate or an anti-reflection film to give it the function of an ultraviolet absorbing layer. In addition, an ultraviolet absorber can also be added to the above-mentioned pressure-sensitive adhesive layer.

[0258] The present invention will be described in more detail below with reference to examples. The materials, amounts used, ratios, processing details, processing procedures, etc. shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. Therefore, the scope of the present invention is not limited to the examples shown below. In the following examples, "parts" and "%" representing compositions are based on mass unless otherwise specified. Room temperature means "25°C". All of the steps from the preparation of the light-absorbing and disappearing layer-forming solution to the production of a light-absorbing filter using the light-absorbing and disappearing layer-forming solution and the use in an ultraviolet irradiation test were carried out under yellow light to prevent ultraviolet irradiation. λ ｍａｘ is a value measured by the method described below in <Absorbance of Light-Absorbing Filter (Before UV Irradiation)>.

[0259] [Preparation of Light-Absorption Filter] The materials used in preparing the light-absorbing filter are as follows. <Polymers (Resins)> (Resin 1) ARUFON UC-3920 (product name) manufactured by Toagosei Co., Ltd., a carboxyl group-containing acrylic polymer, weight-average molecular weight of 15,500. (Resin 2) Adamantyl methacrylate-acrylic acid random copolymer, acrylic acid content of 52 mol%, weight-average molecular weight of 46,300. The structural unit derived from acrylic acid in Resin 2 corresponds to the structural unit having a carboxyl group as the acid group in Compound A defined in the present invention.

[0260] <Compound B> 4-methylquinoline (Tokyo Chemical Industry Co., Ltd., Lepidine, pKaH 5.1)

[0261] <Dye> In the following structural formula, Bu represents a butyl group.

[0262] (Dye to be contained in the light-absorbing and dissipating layer)

[0263] (Dye to be contained in wavelength selective absorption layer)

[0264] (Leveling Agent 1) A polymer surfactant composed of the following components was used as leveling agent 1. In the following structural formula, the ratio of each component is a molar ratio, and t-Bu means a tert-butyl group.

[0265]

[0266] (Substrate 1) A polyethylene terephthalate film Lumirror XD-510P (trade name, film thickness 50 μm, manufactured by Toray Industries, Inc.) was used as the substrate 1.

[0267] Example 1 [Preparation of Light Absorption Filter No. 101 Having a Gas Barrier Layer] <Preparation of Wavelength-Selective Absorption Layer> (1) Preparation of Wavelength-Selective Absorption Layer-Forming Liquid 1 The components were mixed in the composition shown below to prepare wavelength-selective absorption layer-forming liquid 1. ---------------------------------------------------------------- Composition of Wavelength-Selective Absorption Layer-Forming Liquid 1 ---------------------------------------------------------------- Resin 1 93.21 parts by mass Leveling agent 1 0.08 parts by mass Dye E-42 2.50 parts by mass Dye 7-23 1.57 parts by mass Dye C-122 0.66 parts by mass Dye G-2 1.98 parts by mass Tetrahydrofuran (solvent) 566.7 parts by mass ----------------------------------------------------------------

[0268] Subsequently, the wavelength selective absorption layer forming solution 1 obtained was filtered using a filter having an absolute filtration accuracy of 5 μm (trade name: Hydrophobic Fluorepore Membrane, manufactured by Millex Corporation).

[0269] (2) Preparation of Wavelength-Selective Absorption Layer 1 The wavelength-selective absorption layer-forming liquid 1 after the above-mentioned filtration treatment was applied to the substrate 1 using a bar coater so that the film thickness after drying would be 2.4 μm, and the applied coating was dried at 120° C. to prepare a substrate 2 with a wavelength-selective absorption layer.

[0270] <Preparation of Substrate 3 with Diffusion-Impressing Layer>

[0271] (1) Preparation of Diffusion-Preventing Layer Forming Solution A The components were mixed in the composition shown below and stirred in a thermostatic bath at 50°C for 1 hour to dissolve poly(methacrylic acid) (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., weight-average molecular weight 100,000, δt value = 19.0), thereby preparing Diffusion-Preventing Layer Forming Solution A. ---------------------------------------------------------------- Composition of Diffusion-Preventing Layer Forming Solution A---------------------------------------------------------------- Poly(methacrylic acid) (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., weight-average molecular weight 100,000) 4.0 parts by mass Pure water 60.0 parts by mass Ethanol 36.0 parts by mass

[0272] Subsequently, the resulting diffusion-preventing layer-forming solution A was filtered using a filter with an absolute filtration accuracy of 5 μm (trade name: Hydrophobic Fluorepore Membrane, manufactured by Millex Corporation).

[0273] (2) Preparation of Diffusion-Imprisoning Layer The diffusion-imprisoning layer-forming solution A after the above-mentioned filtration treatment was applied to the wavelength-selective absorption layer of the substrate 2 with a wavelength-selective absorption layer using a bar coater so that the film thickness after drying would be 1.1 μm, and the coating was dried under conditions of 120° C. for 60 seconds to prepare a substrate 3 with a diffusion-imprisoning layer.

[0274] <Fabrication of light-absorbing filters>

[0275] (1) Preparation of light-absorbing and disappearing layer-forming liquid The components were mixed in the composition shown below to prepare light-absorbing and disappearing layer-forming liquid (composition) Ba-1. ------------------------------------------------ Composition of light-absorbing and disappearing layer-forming liquid Ba-1 ------------------------------------------------ Resin 2 76.8 parts by mass Leveling agent 1 0.08 parts by mass Dye B-18 3.13 parts by mass Dye D-1 1.22 parts by mass Dye D-6 2.03 parts by mass 4-methylquinoline (Tokyo Chemical Industry Co., Ltd.) 17.2 parts by mass Tetrahydrofuran (solvent, δt value = 23.6) 566.7 parts by mass

[0276] Subsequently, the obtained light-absorbing and dissipating layer forming solution Ba-1 was filtered using a filter paper (#63, manufactured by Toyo Roshi Kaisha, Ltd.) having an absolute filtration accuracy of 10 μm, and further filtered using a sintered metal filter (trade name: Pall Filter PMF, media code: FH025, manufactured by Pall Corporation) having an absolute filtration accuracy of 2.5 μm.

[0277] (2) Preparation of Light-Absorbing Filter The light-absorbing and dissipating layer-forming solution Ba-1 after the filtration treatment was applied to the diffusion-preventing layer of the diffusion-preventing layer-attached substrate 3 using a bar coater so that the film thickness after drying would be 2.2 μm, and the applied solution was dried at 120° C. to form a light-absorbing and dissipating layer, thereby preparing light-absorbing filter No. 101 having no gas barrier layer.

[0278] <Preparation of Light-Absorbing Filter Having a Gas Barrier Layer> Light-absorbing filter No. 101 not having a gas barrier layer was prepared by laminating a gas barrier layer on the light-absorbing disappearing layer of the light-absorbing filter in the manner described below to prepare light-absorbing filter No. 101 (also referred to as "light-absorbing filter No. 101 having a gas barrier layer"), and the evaluation described below was carried out.

[0279] (1) Preparation of Resin Solution Kuraray Exeval AQ-4105 (trade name, manufactured by Kuraray Co., Ltd., modified polyvinyl alcohol, saponification degree 98 to 99 mol%) was dissolved in pure water and isopropyl alcohol by stirring for 1 hour in a thermostatic bath at 90°C, with the components adjusted to the composition ratio shown below. The solution was then cooled to room temperature, and polyethyleneimine (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., weight average molecular weight approximately 10,000) was added to prepare a gas barrier layer-forming solution. Composition of gas barrier layer forming liquid ---------------------------------------------------------------- Kuraray Exeval AQ-4105 (product name, manufactured by Kuraray Co., Ltd.) 3.6 parts by mass Polyethyleneimine (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., weight average molecular weight approximately 10,000) 0.4 parts by mass Pure water 88.5 parts by mass Isopropyl alcohol 7.5 parts by mass ----------------------------------------------------------------

[0280] Subsequently, the resulting gas barrier layer-forming liquid was filtered using a filter with an absolute filtration accuracy of 5 μm (trade name: Hydrophobic Fluorepore Membrane, manufactured by Millex Corporation).

[0281] (2) Lamination of Gas Barrier Layer The gas barrier layer-forming liquid after the filtration treatment was applied to the light-absorbing and dissipating layer side of the light-absorbing filter using a bar coater so that the film thickness after drying would be 0.6 μm, and then dried at 120° C. for 60 seconds to produce light-absorbing filter No. 101 having a gas barrier layer. This light-absorbing filter No. 101 having a gas barrier layer has a configuration in which a substrate 1, a wavelength-selective absorption layer, a diffusion-preventing layer, a light-absorbing and dissipating layer, and a gas barrier layer are laminated in this order.

[0282] [Preparation of Light-Absorbing Filter No. 102 Having a Gas Barrier Layer] Light-absorbing filter No. 102 having a gas barrier layer was prepared in the same manner as in the preparation of light-absorbing filter No. 101 having a gas barrier layer, except that the thickness of the light-absorbing and disappearing layer was changed to the value shown in Table 1 in the preparation of light-absorbing filter No. 101 having a gas barrier layer.

[0283] [Preparation of Light-Absorbing Filter No. r301 Having a Gas Barrier Layer] Light-absorbing filter No. r301 having a gas barrier layer was prepared in the same manner as in the preparation of light-absorbing filter No. 101 having a gas barrier layer, except that in the preparation of light-absorbing filter No. 101 having a gas barrier layer, dyes E-42, 7-23, C-122, and G-2 were removed from the wavelength-selective-absorption layer-forming liquid, and further dyes B-18, D-1, and D-6, and 4-methylquinoline were removed from the light-absorbing-disappearing layer-forming liquid.

[0284] [Preparation of Light-Absorption Filters Nos. c201, c202, and c204 Having a Gas Barrier Layer] In the preparation of light-absorbing filter No. 101 having a gas barrier layer, dyes B-18, D-1, and D-6 were removed from the light-absorbing and disappearing layer-forming solution, and in light-absorbing filter No. c202 having a gas barrier layer, the thickness of the wavelength-selective absorption layer was further changed to the value shown in Table 1, and in light-absorbing filter No. c204 having a gas barrier layer, the blending amount of the dye in the wavelength-selective absorption layer was further changed to the value shown in Table 1. Light-absorbing filters Nos. c201, c202, and c204 having a gas barrier layer were prepared in the same manner as in the preparation of light-absorbing filter No. 101 having a gas barrier layer. Note that in the preparation of the wavelength-selective absorption layer of light-absorbing filter No. c204 having a gas barrier layer, the dyes B-18, D-1, and D-6 were removed from the light-absorbing and disappearing layer-forming solution, and in light-absorbing filter No. c202 having a gas barrier layer, the thickness of the wavelength-selective absorption layer was further changed to the value shown in Table 1. The amount of leveling agent 1 in the wavelength selective absorption layer 101 was fixed, and the amount of resin 1 was adjusted in accordance with the change in the amount of dye, while keeping the mass of the wavelength selective absorption layer unchanged.

[0285] [Preparation of Light-Absorption Filter No. c203 Having a Gas Barrier Layer] Light-absorption filter No. c203 having a gas barrier layer was prepared in the same manner as in the preparation of light-absorption filter No. 101 having a gas barrier layer, except that the dyes E-42, 7-23, C-122, and G-2 were omitted from the wavelength-selective absorption layer-forming liquid in the preparation of light-absorption filter No. 101 having a gas barrier layer.

[0286] Here, Nos. 101 and 102 are light-absorbing filters of the present invention having a gas barrier layer, Nos. c201 to c204 are light-absorbing filters of comparative examples having a gas barrier layer, and No. r301 is a reference light-absorbing filter having a gas barrier layer. In the following description, the "light-absorbing filter having a gas barrier layer" will be simply referred to as the "light-absorbing filter."

[0287] <Absorbance of Light-Absorbing Filter (Before UV Irradiation)> (1) Measurement of Absorbance Using a UV3600 spectrophotometer (trade name) manufactured by Shimadzu Corporation, the absorbance of the light-absorbing filter and the standard filter was measured in 1 nm increments in the wavelength range of 380 to 800 nm. The standard filter for light-absorbing filters Nos. 101, 102, and c201 to c204 was light-absorbing filter No. r301, which was modified so as not to contain the dye and compound B, 4-methylquinoline. (2) Calculation of Absorbance The absorbance values ​​Ab of the light-absorbing filters measured above at each wavelength λ nm were calculated. ｘ (λ) and the absorbance value Ab of the corresponding standard filter at each wavelength λ nm ０ Using the absorbance Ab(λ) of the light-absorbing filter before ultraviolet irradiation, the absorbance Ab(λ) of the light-absorbing filter before ultraviolet irradiation was calculated according to the following formula: Ab(λ)=Ab ｘ (λ)-Ab ０ (λ) Hereinafter, the wavelength showing the largest absorbance Ab(λ) among the wavelengths showing maximum absorption of the light absorption filter in the wavelength range of 400 to 700 nm is referred to as the maximum absorption wavelength (hereinafter simply referred to as "λ"). ｍａｘ "), and this λ ｍａｘ The absorbance at the absorption maximum (hereinafter simply referred to as "Ab(λ ｍａｘ The Ab(λ) of each dye obtained was ｍａｘ) are also shown in the description of the chemical structure of the dye above.

[0288]

[0289] (Notes for the table) The blending amounts of dyes in the wavelength selective absorption layer and the light absorbing and disappearing layer mean parts by mass of dye in 100 parts by mass of the wavelength selective absorption layer and parts by mass of dye in 100 parts by mass of the light absorbing and disappearing layer, respectively. The units of thickness of the wavelength selective absorption layer and the light absorbing and disappearing layer are both μm.

[0290] <<Reference Example>> Light-absorbing filters Nos. r302 to r304 were prepared by changing the blending amount of each dye in light-absorbing filter No. c203, a comparative example in which dye was added only to the light-absorbing and disappearing layer, to the values ​​shown in Table 2, and the decolorization rate of each dye contained in the light-absorbing and disappearing layer was evaluated as follows. The results are summarized in Table 2 below.

[0291] (Ultraviolet Irradiation Test) Under atmospheric pressure (101.33 kPa), an ultra-high pressure mercury lamp (manufactured by HOYA Corporation, product name: UL750) was used on a hot plate at 45°C, and the light absorbing filter and the standard filter were exposed to an illuminance of 100 mW / cm. ２ , irradiation amount 2000mJ / cm ２ The gas barrier layer side (opposite side from the substrate 1) was irradiated with ultraviolet (UV) rays of 1000 kJ / cm. The standard filter for light-absorbing filters Nos. r302 to r304 was light-absorbing filter No. r301.

[0292] <Absorbance of light-absorbing filter (after ultraviolet irradiation)> Using the light-absorbing filter after ultraviolet irradiation and the standard filter, the absorbance Ab(λ) of the light-absorbing filter after ultraviolet irradiation was calculated in the same manner as described above in <Absorbance of light-absorbing filter (before ultraviolet irradiation)>. Note that the absorbance Ab(λ) of the light-absorbing filter before the ultraviolet irradiation test was also calculated in the same manner as described above in <Absorbance of light-absorbing filter (before ultraviolet irradiation)>.

[0293] [1. Evaluation of decolorization rate] The maximum absorption value (Ab(λ)) before and after the ultraviolet irradiation test ｍａｘ )) was used to calculate the decolorization rate according to the following formula: Decolorization rate (%) = 100 - (Ab(λ) after ultraviolet irradiation)ｍａｘ ) / Ab(λ ｍａｘ )) x 100

[0294] [2. Absorption derived from a new colored structure accompanying decomposition of the dye (secondary absorption)] In all of the light-absorbing filters Nos. r302 to r304 of the reference examples, the value obtained by subtracting the ratio of (I) from the ratio of (II) specified in the above paragraph

[0223] was 5.0% or less, and secondary absorption accompanying the decomposition of the dye due to ultraviolet irradiation was suppressed.

[0295]

[0296] (Notes for the table) The amount of dye in the light-absorbing and disappearing layer means parts by mass of the dye in 100 parts by mass of the light-absorbing and disappearing layer. The unit of the thickness of the light-absorbing and disappearing layer is μm.

[0297] From the results in Table 2 above, it can be seen that all of the light-absorbing filters Nos. r302 to r304 of the reference examples exhibit excellent decolorization rates, and that there is almost no secondary absorption due to decomposition of the dye due to irradiation with ultraviolet light, and that the filters are excellent in decolorization properties.

[0298] <Simulation of Brightness, Reflectance, and Color> A simulation of external light reflection was performed on the OLED display device provided with the light-absorbing filter fabricated above, and the brightness, reflectance, and color (a ＊ and b ＊ ) was calculated.

[0299] (1) Simulation Conditions In a simulation of the reflectance of external light and the reflected color of an OLED display device, the reflectance, transmission spectrum, and reflection spectrum of each component were defined as follows. (i) As the reflectance of the OLED substrate, the reflection spectrum of the substrate measured by disassembling a commercially available iPhone (registered trademark) X (product name) manufactured by Apple Inc. and peeling off the circular polarizer was used. (ii) As the transmission spectrum of the light-absorbing filter, the spectrum obtained by converting the absorbance Ab(λ) of the light-absorbing filter before UV irradiation into transmittance was used as the "transmission spectrum of the portion covering the non-display portion (transmission spectrum of the portion with high light absorption)." Also, the spectrum obtained by converting the absorbance Ab(λ) of the light-absorbing filter after UV irradiation under the conditions described in the UV irradiation test in the above-mentioned "Reference Example" was used as the "transmission spectrum of the portion covering the display portion (transmission spectrum of the portion with low light absorption)." (iii) The emission spectrum of the display light was measured using the emission spectrum of a commercially available Apple iPhone (registered trademark) X (product name) using a spectroradiometer SR-UL1R (product name, manufactured by Topcon Technohouse). (iv) The area ratio of the non-display portion to the display portion of the display device was set to non-display portion of the display device / display portion of the display device = 77 / 23. Therefore, for the optical filter obtained by masked exposure (pattern exposure) of a light-absorbing filter to ultraviolet light, the area ratio of the masked non-UV-irradiated portion (portion covering the non-display portion, portion with high light absorption) to the unmasked UV-irradiated portion (portion covering the display portion, portion with low light absorption) was set to UV-irradiated portion / UV-irradiated portion = 77 / 23.

[0300] (2) Calculation of Reflectance and Reflection Color The reflectance and reflection color were calculated by calculating the reflection spectra of the areas with low light absorption and the areas with high light absorption, and multiplying the area ratios. Specifically, the calculation is as follows:

[0301] First, the reflectance spectrum in the area with low light absorption and the reflectance spectrum in the area with high light absorption are calculated. The reflectance in the area with low light absorption is calculated as R Ｌ , the reflectance at the area with high light absorption is R Ｈand the transmittance in the area with low light absorption is T Ｌ , the transmittance in the area with high light absorption is T Ｈ and the reflectance of the OLED substrate is R ｓｕｂ The reflectance of the outermost air interface was set to 1.5%, and the values ​​were calculated for each wavelength based on the following formula: Ｌ and T Ｈ The transmittance value at each wavelength obtained from the transmission spectrum of the above-mentioned light absorption filter was calculated by multiplying 100% by 0.01. Ｌ = (T Ｌ ) ２ × (R ｓｕｂ -1.5%) +1.5% R Ｈ = (T Ｈ ) ２ × (R ｓｕｂ Next, the area ratios of the low light absorption area and the high light absorption area are respectively expressed as A Ｌ , A Ｈ The reflectance spectrum of the OLED display device was calculated using the following formula: Ｌ and A Ｈ The reflectance spectrum of the OLED display device is R Ｌ ×A Ｌ +R Ｈ ×A Ｈ Based on the reflection spectrum of the OLED display device calculated above, the reflectance (visibility correction) and a ＊ and b ＊ was calculated.

[0302] (3) Calculation of Relative Brightness The relative brightness when the light-absorbing filter prepared above was used was calculated as follows. The emission spectrum S(λ) of the display was calculated using the emission spectrum of an iPhone (registered trademark) X (product name) manufactured by Apple Inc. The absorbance Ab(λ) of the light-absorbing filter after ultraviolet irradiation under the conditions described in the ultraviolet irradiation test in the above-mentioned <<Reference Example>> was converted into transmittance, and the spectrum was defined as T(λ). The brightness when no light-absorbing filter was used was calculated by correcting the emission spectrum S(λ) for luminosity, and this brightness was defined as 100. The brightness of the emission spectrum S(λ) × T(λ) when the light-absorbing filter was used was calculated as the relative brightness to the brightness when the light-absorbing filter was not used.

[0303] <Evaluation of the effect of suppressing brightness decrease> Using the relative brightness values ​​obtained in the above simulation, the effect of suppressing brightness decrease was evaluated based on the following evaluation criteria: (Evaluation criteria) A: 50<relative brightness≦100 B: 40<relative brightness≦50 C: 0≦relative brightness≦40

[0304] <Evaluation of the effect of suppressing external light reflection> Using the reflectance values ​​obtained in the above simulation, the reduction rate of reflectance was calculated according to the following formula, and the effect of suppressing external light reflection was evaluated based on the following evaluation criteria. Reduction rate of reflectance=(R ０ -R １ ) / R ０ ×100% R １ : Reflectance when a light absorbing filter containing a dye is used R ０ : Reflectance when a light absorbing filter containing no dye of No. r301 is used (Evaluation criteria) A: 85% < reduction rate of reflectance B: 70% < reduction rate of reflectance ≦ 85% C: 0 ≦ reduction rate of reflectance ≦ 70%

[0305] <Evaluation of Reflection Color> The a obtained from the above simulation ＊ , b ＊ The reflected color was evaluated based on the following evaluation criteria. (Evaluation criteria) A: a ＊ and b ＊ are both -5.0 or more and 5.0 or less. B: a ＊ and b＊ At least one of the above is less than −5.0 or more than 5.0. The results are summarized in Table 3.

[0306]

[0307] As shown in Table 3, comparative light-absorbing filters No. c201, c202, and c204, which contain dye only in the wavelength-selective absorption layer, were unable to simultaneously suppress external light reflection and brightness reduction. Comparing light-absorbing filter No. c201 with light-absorbing filters No. c202 and c204, it can be seen that when dye is contained only in the wavelength-selective absorption layer, increasing the dye content or thickening the layer to improve the external light reflection suppression effect results in a poorer brightness reduction suppression effect. Furthermore, comparative light-absorbing filter No. c203, which contains dye only in the light-absorbing and disappearing layer, was inferior in the external light reflection suppression effect and was unable to simultaneously suppress external light reflection and brightness reduction. When dye is contained only in the light-absorbing and disappearing layer, the display area becomes transparent, and therefore, in display devices where the ratio of the display area to the non-display area is high, the external light reflection suppression effect cannot be increased beyond a certain level. In contrast, light-absorbing filters No. 101 and No. 102 of the present invention, which contain dyes in both the wavelength-selective absorption layer and the light-absorbing / disappearing layer, were able to suppress both external light reflection and brightness reduction at a high level, and also achieved a neutral reflected color.

[0308] While the present invention has been described in connection with embodiments thereof, we do not intend to limit our invention to any of the details of the description unless otherwise specified, and believe that the claims should be construed broadly without departing from the spirit and scope of the invention as set forth in the appended claims.

[0309] This application claims priority based on Japanese Patent Application No. 2023-207520 filed in Japan on December 8, 2023, and Japanese Patent Application No. 2024-095400 filed in Japan on June 12, 2024, the contents of which are incorporated herein by reference.

[0310] REFERENCE SIGNS LIST 1 Upper polarizer 2 Direction of absorption axis of upper polarizer 3 Liquid crystal cell upper electrode substrate 4 Alignment control direction of upper substrate 5 Liquid crystal layer 6 Liquid crystal cell lower electrode substrate 7 Alignment control direction of lower substrate 8 Lower polarizer 9 Direction of absorption axis of lower polarizer B Backlight unit 10 Liquid crystal display device

Claims

1. A light-absorbing filter comprising: a light-absorbing and dissipative layer containing a resin, a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, and a compound that generates radicals when irradiated with ultraviolet light; and a wavelength-selective absorption layer containing a resin, a dye having a main absorption wavelength band in the wavelength range of 400 to 700 nm, and no compound that generates radicals when irradiated with ultraviolet light.

2. The light absorbing filter according to claim 1, wherein the compound that is contained in the light absorbing and disappearing layer and that generates radicals when irradiated with ultraviolet light comprises a combination of compound A having an acid group and compound B having a structure capable of forming a hydrogen bond with the acid group contained in compound A.

3. The light-absorbing filter according to claim 2, wherein said compound A is chemically bonded to a polymer constituting said resin contained in said light-absorbing and dissipative layer.

4. The light-absorbing filter according to claim 1, wherein said dye contained in said light-absorbing and dissipative layer undergoes a chemical change and loses its color when irradiated with ultraviolet light.

5. An optical filter obtained by exposing the light absorbing filter according to claim 1 to ultraviolet light through a mask.

6. A display device intermediate comprising the light absorbing filter according to claim 1.

7. A display element obtained by exposing the intermediate display element according to claim 6 to ultraviolet light through a mask.

8. An organic electroluminescence display device, an inorganic electroluminescence display device, or a liquid crystal display device, comprising the optical filter according to claim 5 or the display element according to claim 7.

9. The organic electroluminescent display device, inorganic electroluminescent display device, or liquid crystal display device according to claim 8, which has a layer for inhibiting light absorption by the compound that generates radicals when irradiated with ultraviolet light, on the viewer side of the optical filter according to claim 5 or the display element according to claim 7.

10. A method for producing an optical filter, comprising irradiating the light absorption filter according to any one of claims 1 to 4 with ultraviolet light and exposing the same through a mask.

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