Wavelength selective absorption filter, organic electroluminescent display device and liquid crystal display device

Abstract

The present invention provides a wavelength selective absorption filter and a polarizing plate, an organic electroluminescent display device or a liquid crystal display device comprising the wavelength selective absorption filter. The wavelength selective absorption filter contains a resin and the following dyes A and D having main absorption wavelength bands in different wavelength regions, wherein the absorbance Ab(λ) of the wavelength selective absorption filter at a wavelength λnm satisfies the relationship of the following formula (I), dye A: a dye having a main absorption wavelength band at a wavelength of 400 to 430nm in the wavelength selective absorption filter; dye D: a dye having a main absorption wavelength band at a wavelength of 640 to 730nm in the wavelength selective absorption filter; the relationship formula (I) 0.05≤Ab(450) / Ab(430)<1.00.

Description

Technical Field

[0001] The invention relates to a wavelength selective absorption filter, an organic electroluminescent display device and a liquid crystal display device. Background Art

[0002] It is understood that when using an image display device such as an organic electroluminescent (OLED) display device or a liquid crystal display device, long-term viewing of the display may cause various symptoms or eye fatigue such as dry eyes, eye inflammation, fatigue, blurred vision or headache, or cause decreased vision.

[0003] As a measure for the above, the following technology is known: blue light is cut off by using an optical filter containing a pigment having a maximum absorption near a wavelength of 430nm, etc., which cuts off visible light in the blue wavelength region. On the other hand, when using an optical filter having such a blue light cutting function, the problem of color tone change occurs.

[0004] Therefore, it is required to develop an optical filter that solves the above problems at the same time.

[0005] For example, Patent Document 1 describes an optical film having selective absorption near 420 nm, and the ratio of the absorbance at 450 nm to the absorbance at a wavelength of 420 nm is within a specific range. Patent Document 2 describes a cured film containing a pigment having a specific chemical structure, and describes that the cured film has excellent blue light cutoff properties.

[0006] Furthermore, in Patent Document 3, as a shielding film for reducing light radiation harmful to the eyes from electronic devices, there is described a shielding film, wherein the transmittance in the ultraviolet region of 380 to 400 nm is reduced by more than 90%, the transmittance in the high-energy visible light region of 415 to 555 nm is reduced by more than 10%, and the transmittance in the red light region of 625 to 740 nm is reduced by more than 10%.

[0007] Previous technical literature

[0008] Patent Literature

[0009] Patent Document 1: Japanese Patent Application Publication No. 2017-142412

[0010] Patent Document 2: International Publication No. 2014 / 2087149

[0011] Patent Document 3: Japanese Patent Application Publication No. 2017-116951 Summary of the invention

[0012] Technical issues to be solved by the invention

[0013] In recent years, in the panel and monitor industries, a blue light cut-off function is required to suppress the harmful effects on retinal pigment epithelial cells. Blue light cut-off function of Low Blue Light Content (low blue light content) as a benchmark by Rheinland Japan Ltd.

[0014] As a result of intensive research conducted by the present inventors, it was found that the optical film described in Patent Document 1 or the shielding member described in Patent Document 3 has absorption that is responsible for blue light cutoff in the blue wavelength region and is located on the short wavelength side, so it cannot be said that blue light is sufficiently reduced, and there is room for improvement. In addition, the shielding member described in Patent Document 3 also has the problem of a decrease in relative brightness and a change in color tone (a significant increase in correlated color temperature).

[0015] On the other hand, it is known that in the cured film described in Patent Document 2, although the absorption responsible for blue light cutting is located on the long wavelength side in the blue wavelength region, when the amount of dye blended is adjusted in a manner to exhibit a sufficient blue light cutting function, a change in color tone occurs (a significant decrease in correlated color temperature).

[0016] The present invention aims to provide a wavelength selective absorption filter and a polarizing plate, an organic electroluminescent display device or a liquid crystal display device including the wavelength selective absorption filter, which, when used on the front surface of an image display device, can suppress the decrease in relative brightness while achieving both an excellent blue light cutoff function and an excellent correlated color temperature.

[0017] Means for solving technical problems

[0018] In view of the above problems, the present inventors have conducted intensive research and found that by using a dye A having an absorbance ratio that satisfies a specific relationship and a dye D that absorbs in the red light region in the visible light region as a dye exhibiting a blue light cutoff function, it is possible to achieve both an excellent correlated color temperature and an excellent blue light cutoff function while suppressing a decrease in relative brightness. The present invention was completed through further research based on this finding.

[0019] That is, the above-mentioned problems were solved by the following means.

[0020] <1>

[0021] A wavelength selective absorption filter comprises a resin and the following dyes A and D having main absorption wavelength bands in different wavelength regions, wherein the absorbance Ab(λ) of the wavelength selective absorption filter at a wavelength λ nm satisfies the following relational expression (I).

[0022] Dye A: a dye having a main absorption wavelength band at a wavelength of 400 to 430 nm in a wavelength selective absorption filter;

[0023] Dye D: a dye having a main absorption wavelength band at a wavelength of 640 to 730 nm in a wavelength selective absorption filter;

[0024] Relationship (I) 0.05≤Ab(450) / Ab(430)<1.00.

[0025] <2>

[0026] according to <1> The wavelength selective absorption filter, wherein:

[0027] The dye A is a coloring matter represented by the following general formula (A1).

[0028] [Chemical formula 1]

[0029]

[0030] In the above formula, 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 With R 6 They may be bonded to each other to form a 6-membered ring.

[0031] <3>

[0032] A polarizing plate comprising <1> or <2> The wavelength selective absorption filter.

[0033] <4>

[0034] An organic electroluminescent display device or a liquid crystal display device, comprising <1> or <2> The wavelength selective absorption filter.

[0035] In the present invention, when there are multiple substituents or linking groups represented by specific symbols or formulas (hereinafter referred to as substituents, etc.) or when multiple substituents, etc. are specified at the same time, unless otherwise specified, each substituent, etc. may be the same or different from each other. This is also the same for the number of substituents, etc. In addition, when multiple substituents, etc. are close (especially, when adjacent), unless otherwise specified, they can be linked to each other to form a ring. In addition, unless otherwise specified, rings such as alicyclic rings, aromatic rings, and heterocyclic rings can be further fused to form condensed rings.

[0036] In the present invention, when the number of carbon atoms of a group is specified, unless otherwise specified in the present invention or this specification, the number of carbon atoms refers to the number of carbon atoms of the entire group. That is, when the group further has a substituent, it refers to the number of carbon atoms of the entire group including the substituent.

[0037] In the present invention, unless otherwise specified, the components constituting the wavelength selective absorption filter (dye, resin, and other components that may be appropriately contained, etc.) may be contained in the wavelength selective absorption filter alone or in two or more kinds.

[0038] In the present invention, unless otherwise specified, when a double bond exists in a molecule, it may be either E-type or Z-type, and may be a mixture thereof.

[0039] In the present invention, the expression of a compound (including a complex) is used to include, in addition to the compound itself, its salt and its ion. Furthermore, it refers to a substance obtained by changing a part of the structure within the scope of not damaging the effect of the present invention. Moreover, with respect to a compound not indicating substitution or unsubstituted, it means that it may have any substituent within the scope of not damaging the effect of the present invention. This is also the same for substituents and linking groups.

[0040] Furthermore, in the present invention, a numerical range expressed using "to" means a range including the numerical values ​​described before and after "to" as the lower limit and the upper limit.

[0041] In the present invention, the composition includes not only a mixture in which the concentration of the components is constant (each component is uniformly dispersed) but also a mixture in which the concentration of the components varies within a range that does not impair the intended function.

[0042] In the present invention, having a main absorption wavelength band at wavelengths XX to YYnm means that the wavelength showing maximum absorption (i.e., the maximum absorption wavelength) exists in the wavelength region XX to YYnm. Therefore, if the maximum absorption wavelength is within the above-mentioned wavelength region, the entire absorption band including the wavelength may be within the above-mentioned wavelength region or may extend outside the above-mentioned wavelength region. Furthermore, in the case where there are multiple maximum absorption wavelengths, as long as the effect of the present invention is exerted, the maximum absorption wavelength showing the maximum absorbance may exist in the above-mentioned wavelength region. That is, the maximum absorption wavelength other than the maximum absorption wavelength showing the maximum absorbance may exist in any one of the above-mentioned wavelength region XX to YYnm within or outside the above-mentioned wavelength region within the range of exerting the effect of the present invention.

[0043] Effects of the Invention

[0044] The wavelength selective absorption filter and polarizing plate of the present invention, when used for the front surface of an image display device, can achieve both an excellent blue light cutoff function and an excellent correlated color temperature while suppressing a decrease in relative brightness.

[0045] Furthermore, the organic electroluminescent display device and liquid crystal display device of the present invention including the wavelength selective absorption filter of the present invention can display both an excellent blue light cutoff function and an excellent correlated color temperature while suppressing a decrease in relative brightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram schematically showing an embodiment of a liquid crystal display device including a wavelength selective absorption filter of the present invention in a backlight. DETAILED DESCRIPTION

[0047] [Wavelength selective absorption filter]

[0048] The wavelength selective absorption filter of the present invention contains a resin and the following dyes A and D having main absorption wavelength bands in different wavelength regions. The absorbance Ab(λ) of the wavelength selective absorption filter at a wavelength λnm satisfies the following relational expression (I).

[0049] Dye A: a dye having a main absorption wavelength band at a wavelength of 400 to 430 nm in a wavelength selective absorption filter;

[0050] Dye D: a dye having a main absorption wavelength band at a wavelength of 640 to 730 nm in a wavelength selective absorption filter;

[0051] Relationship (I) 0.05≤Ab(450) / Ab(430)<1.00.

[0052] In the present invention, the main absorption wavelength band of the dye refers to the main absorption wavelength band of the dye measured in the state of the wavelength selective absorption filter. In addition, in the present invention, the absorbance ratio described in the above-mentioned relational formula (I) is a value calculated using the absorbance value measured in the state of the wavelength selective absorption filter. Specifically, in the embodiments described later, the measurement and calculation are performed in the state of the wavelength selective absorption filter with the substrate by the conditions described in the absorption maximum value of the wavelength selective absorption filter.

[0053] Regarding the form of the wavelength selective absorption filter of the present invention, as long as the dye in the wavelength selective absorption filter shows an absorption spectrum, the effect of the present invention can be exerted. As one form of the wavelength selective absorption filter of the present invention, the above-mentioned "dye" is dispersed (preferably dissolved) in the above-mentioned resin to make the wavelength selective absorption filter a filter that shows a specific absorption spectrum derived from the dye. The dispersion may be any of random, regular, etc.

[0054] The dye A and the dye D which may be contained in the wavelength selective absorption filter of the present invention may each independently be one kind or two or more kinds.

[0055] The wavelength selective absorption filter of the present invention may contain dyes other than the dye A and the dye D as long as the effects of the present invention are exhibited.

[0056] The wavelength selective absorption filter of the present invention contains the dye A and the dye D and satisfies the above relational expression (I), and thus, when used on the front surface of an image display device, it is possible to achieve both an excellent blue light cutoff function and an excellent correlated color temperature while suppressing a decrease in relative brightness. Although the reason is inferred, it is considered as follows.

[0057] The wavelength selective absorption filter of the present invention contains a dye A having a main absorption wavelength band at a wavelength of 400 to 430 nm and satisfying 0.05≤Ab(450) / Ab(430) in the above relationship (I), thereby being able to exhibit an excellent blue light cutting function.

[0058] Furthermore, the combination contains a dye A satisfying Ab(450) / Ab(430)<1.00 in the above relational formula (I) and a dye D having a main absorption wavelength band at a wavelength of 640 to 730 nm. Therefore, it is considered that the wavelength selective absorption filter of the present invention has an excellent blue light cutoff function, and adjusts the color tone so as not to shield the wavelength region of the light source of the image display device, and when used on the visual recognition side (front surface) of the light source arranged in the image display device, it is possible to suppress the decrease in relative brightness while displaying an excellent correlated color temperature.

[0059] Among them, from the viewpoint of achieving a balance between suppression of a decrease in relative luminance, an excellent blue light cutoff function, and an excellent correlated color temperature at a more excellent level, the above relational expression (I) preferably satisfies the following preferred range.

[0060] The upper limit of Ab(450) / Ab(430) in relational formula (I) is preferably 0.90 or less, more preferably 0.85 or less, further preferably 0.80 or less, and particularly preferably 0.60 or less. The lower limit is preferably 0.07 or more, more preferably 0.10 or more, and further preferably 0.15 or more.

[0061] <Dye>

[0062] (Dye A)

[0063] Dye A is not particularly limited as long as it has a main absorption wavelength band at 400 to 430 nm in the wavelength selective absorption filter and satisfies relational expression (I) described below as a dye for the wavelength selective absorption filter of the present invention, and various dyes can be used.

[0064] As the dye A, a dye represented by the following general formula (A1) is preferred from the viewpoint of having a clear absorption waveform in the main absorption wavelength band.

[0065] The wavelength selective absorption filter of the present invention uses the pigment represented by the general formula (A1) as the dye A, thereby being able to achieve both suppression of relative brightness reduction, excellent blue light cutoff function and excellent correlated color temperature and also exhibit excellent light resistance.

[0066] [Chemical formula 2]

[0067]

[0068] 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 With R 6 They may be bonded to each other to form a 6-membered ring.

[0069] As can be used as R 1 and R 2 The alkyl group may be an unsubstituted alkyl group or a substituted alkyl group having a substituent, may be a linear or branched alkyl group, or may have a cyclic structure.

[0070] Examples of the unsubstituted alkyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, and a cyclohexyl group. The unsubstituted alkyl group preferably has 1 to 12 carbon atoms, and more preferably has 1 to 6 carbon atoms.

[0071] As a substituent which the said substituted alkyl group can adopt, the substituent included in the following substituent group A is mentioned, for example.

[0072] (Substituent Group A)

[0073] Halogen atoms, alkyl groups, cycloalkyl groups, aralkyl groups, alkenyl groups, alkynyl groups, aryl groups, heteroatom-containing cyclic groups, cyano groups, hydroxyl groups, nitro groups, carboxyl groups (which may be in the form of salts), alkoxy groups, aryloxy groups, silyloxy groups, heterocyclic groups, acyloxy groups, carbamoyloxy groups, sulfonyloxy groups, alkoxycarbonyloxy groups, aryloxycarbonyloxy groups, amino groups (including -NR in addition to -NH2) a 2 represents a substituted amino group. a Each independently represents a hydrogen atom, an alkyl group, an aryl group or a heteroaryl group. ais an alkyl group, an aryl group or a heteroaryl group. ), an acylamino group, an aminocarbonylamino group, an alkylcarbonylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfamoylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, a sulfonamide group, a mercapto group, an alkylthio group, an arylthio group, a heterocyclic thio group, a sulfamoyl group, a sulfo group (which may be in the form of a salt), an alkylsulfinyl group, an arylsulfinyl group, an alkylsulfonyl group, an arylsulfonyl group, an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, a carbamoyl group, an imido group, a phosphinyl group, an oxyphosphinyl group, an oxyphosphinylamino group and a silyl group, and a monovalent group formed by linking at least two of them

[0074] In the above substituent group A, preferred examples of the substituent which the substituted alkyl group may have include a halogen atom, an aryl group, an alkoxy group, an acyl group and a hydroxyl group.

[0075] The total number of carbon atoms in the substituted alkyl group is preferably 1 to 12. Examples thereof include benzyl, hydroxybenzyl, and methoxyethyl.

[0076] The total number of carbon atoms in a substituted alkyl group refers to the number of carbon atoms in the entire substituted alkyl group including the substituents that the substituted alkyl group may have. Hereinafter, the same meaning is used in other groups.

[0077] In addition, in R 1 and R 2 When both represent an alkyl group, the alkyl groups may be the same or different.

[0078] Can be used as R 1 and R 2 The aryl group may be any of an unsubstituted aryl group and a substituted aryl group having a substituent.

[0079] The unsubstituted aryl group is preferably an aryl group having 6 to 12 carbon atoms, and an example thereof is a phenyl group.

[0080] As a substituent which can be adopted for the said substituted aryl group, the substituent included in the said substituent group A can be mentioned, for example.

[0081] In the above substituent group A, preferred examples of the substituent that the substituted aryl group may have include a halogen atom (e.g., a chlorine atom, a bromine atom, and an iodine atom), a hydroxyl group, a carboxyl group, a sulfonamide group, an amino group (preferably represented by -NR a 2 represents a substituted amino group. aEach independently represents a hydrogen atom or an alkyl group. Among them, at least one Ra is an alkyl group. The number of carbon atoms is preferably 1 to 4. ), alkyl (preferably an alkyl group having 1 to 4 carbon atoms; for example, methyl, ethyl, n-propyl and isopropyl), alkoxy (preferably an alkoxy group having 1 to 4 carbon atoms; for example, methoxy, ethoxy, n-propoxy and isopropoxy), alkoxycarbonyl (preferably an alkoxycarbonyl group having 2 to 5 carbon atoms; for example, methoxycarbonyl, ethoxycarbonyl, n-propoxycarbonyl and isopropoxycarbonyl) and sulfonyloxy, and a monovalent group formed by linking at least two of them.

[0082] As the substituted aryl group, an aryl group having 6 to 18 carbon atoms in total is preferred.

[0083] For example, 4-chlorophenyl, 2,5-dichlorophenyl, hydroxyphenyl, 4-carboxyphenyl, 3,5-dicarboxyphenyl, 4-methanesulfonylaminophenyl, 4-methylphenyl, 4-methoxyphenyl, 4-(2-hydroxyethoxy)phenyl, N,N-dimethylaminophenyl, 4-(N-carboxymethyl-N-ethylamino)phenyl, 4-ethoxycarbonylphenyl and 4-methanesulfonyloxyphenyl can be mentioned.

[0084] In addition, in R 1 and R 2 When both represent aryl groups, the aryl groups may be the same or different.

[0085] As can be used as R 3 , R 4 , R 5 and R 6 Examples of the substituents include the substituents included in the above-mentioned substituent group A.

[0086] In the above substituent group A, R 3 , R 5 and R 6 Preferably, an alkyl group or an aryl group is used. 3 , R 5 and R 6 , preferably each independently a hydrogen atom, an alkyl group or an aryl group.

[0087] Furthermore, in the above substituent group A, R 4 Preferably, an alkyl group or an aryl group is used. 4 , preferably a hydrogen atom, an alkyl group or an aryl group.

[0088] As can be used as R 3 , R 5 and R 6 The alkyl group may be an unsubstituted alkyl group or a substituted alkyl group having a substituent, may be a linear or branched alkyl group, or may have a cyclic structure.

[0089] As can be used as the above R 3 , R 5 and R 6 The unsubstituted alkyl group may be, for example, a methyl group, an ethyl group, a n-propyl group, an isopropyl group, or the like. 3 , R 5 and R 6 The unsubstituted alkyl group preferably has 1 to 8 carbon atoms, more preferably 1 to 4 carbon atoms.

[0090] As the above R 3 , R 5 and R 6 Examples of the substituents that the substituted alkyl group may have include the substituents included in the above-mentioned substituent group A.

[0091] As the above R 3 , R 5 and R 6 Preferred examples of the substituent which the substituted alkyl group may have include an aryl group (preferably a phenyl group), a halogen atom, an acyl group, an amino group, an alkoxycarbonyl group, a carboxyl group and a hydroxyl group.

[0092] Can be used as above R 3 , R 5 and R 6 The total number of carbon atoms of the substituted alkyl group is preferably 1 to 8. Examples thereof include a benzyl group, a carboxymethyl group, and a hydroxymethyl group.

[0093] In addition, in R 3 , R 5 and R 6 When both represent an alkyl group, the alkyl groups may be the same or different.

[0094] As can be used as the above R 3 , R 5 and R 6 The aryl group may be any of an unsubstituted aryl group and a substituted aryl group.

[0095] As can be used as the above R 3 , R 5 and R 6 The unsubstituted aryl group is preferably an aryl group having 6 to 10 carbon atoms, for example, a phenyl group is mentioned.

[0096] As the above R 3 , R 5 and R 6 Examples of the substituents that the substituted aryl group in may have include the substituents included in the above-mentioned substituent group A.

[0097] As the above R 3 , R 5 and R6 Preferred examples of the substituents that the substituted aryl group may have include a halogen atom (for example, a fluorine atom, a chlorine atom, a bromine atom and an iodine atom), a hydroxyl group, a carboxyl group, and an alkyl group (preferably an alkyl group having 1 to 4 carbon atoms; for example, a methyl group, an ethyl group, a n-propyl group and an isopropyl group).

[0098] As can be used as the above R 3 , R 5 and R 6 The substituted aryl group is preferably an aryl group having a total carbon number of 6 to 10. Examples thereof include 2-fluorophenyl, 4-chlorophenyl, 2,5-dichlorophenyl, hydroxyphenyl, carboxyphenyl, 3,5-dicarboxyphenyl and 4-methylphenyl.

[0099] In R 5 and R 6 When both are substituents, from the viewpoint of light resistance and heat resistance, R 3 Preferred is a hydrogen atom.

[0100] In addition, in R 3 , R 5 and R 6 When both are aryl groups, the aryl groups may be the same or different.

[0101] Can be used as R 4 The alkyl group may be an unsubstituted alkyl group or a substituted alkyl group having a substituent, may be a linear or branched alkyl group, or may have a cyclic structure.

[0102] As can be used as the above R 4 The unsubstituted alkyl group may be, for example, a methyl group, an ethyl group, a n-propyl group, an isopropyl group, and a cyclohexyl group. 4 The unsubstituted alkyl group preferably has 1 to 8 carbon atoms, more preferably 1 to 4 carbon atoms.

[0103] As the above R 4 Examples of the substituents that the substituted alkyl group may have include the substituents included in the above-mentioned substituent group A.

[0104] As the above R 4Preferred examples of the substituent that the substituted alkyl group in may have include an aryl group (preferably a phenyl group), a heteroatom-containing cyclic group, a carboxyl group, a hydroxyl group, an alkyl group (preferably an alkyl group having 1 to 4 carbon atoms; for example, a methyl group, an ethyl group, a n-propyl group, and an isopropyl group), an alkoxy group (preferably an alkoxy group having 1 to 4 carbon atoms; for example, a methoxy group, an ethoxy group, a n-propoxy group, and an isopropoxy group), an aryloxy group, an alkoxycarbonyl group (preferably an alkoxycarbonyl group having 2 to 5 carbon atoms; for example, a methoxycarbonyl group, an ethoxycarbonyl group, a n-propoxycarbonyl group, and an isopropoxycarbonyl group), an alkylamino group (preferably an alkylamino group having 1 to 4 carbon atoms; for example, a dimethylamino group), an alkylcarbonylamino group (preferably an alkylcarbonylamino group having 1 to 4 carbon atoms; for example, a methylcarbonylamino group), a cyano group, an acyl group (for example, an acetyl group, a propionyl group, a benzoyl group, and a methylsulfonyl group), and a monovalent group in which at least two of them are linked.

[0105] Can be used as above R 4 The total number of carbon atoms of the substituted alkyl group is preferably 1-18.

[0106] For example, benzyl, carboxybenzyl, hydroxybenzyl, methoxycarbonylethyl, ethoxycarbonylmethyl, 2-cyanoethyl, 2-propionylaminoethyl, dimethylaminomethyl, methylcarbonylaminopropyl, di(methoxycarbonylmethyl)aminopropyl and phenacyl can be mentioned.

[0107] Can be used as above R 4 The aryl group may be any of an unsubstituted aryl group and a substituted aryl group having a substituent.

[0108] As can be used as the above R 4 The unsubstituted aryl group is preferably an aryl group having 6 to 12 carbon atoms, for example, a phenyl group is mentioned.

[0109] As the above R 4 Examples of the substituents that the substituted aryl group in may have include the substituents included in the above-mentioned substituent group A.

[0110] As the above R 4 Preferred examples of the substituent that the substituted aryl in may have include a halogen atom (e.g., a chlorine atom, a bromine atom, an iodine atom), a hydroxyl group, a carboxyl group, a sulfonamide group, an amino group, an alkyl group (preferably an alkyl group having 1 to 4 carbon atoms; for example, a methyl group, an ethyl group, a n-propyl group, an isopropyl group), an alkoxy group (preferably an alkoxy group having 1 to 4 carbon atoms; for example, a methoxy group, an ethoxy group, a n-propoxy group, an isopropoxy group), an alkoxycarbonyl group (preferably an alkoxycarbonyl group having 2 to 5 carbon atoms; for example, a methoxycarbonyl group, an ethoxycarbonyl group, a n-propoxycarbonyl group, an isopropoxycarbonyl group) and a sulfonyloxy group, and a monovalent group formed by linking at least two of them.

[0111] The above R4 The amino group that the substituted aryl group may have may be an unsubstituted amino group (-NH2) and a substituted amino group having a substituent (-NR in the above substituent group A). a 2).

[0112] The above R 4 The substituted aryl group may have an amino group (-NR a 2), as R a , we can cite the above R 4 The same group as the substituted alkyl in .

[0113] The substituted amino group is preferably an alkylamino group in which one or two hydrogen atoms of the amino group are substituted with an alkyl group.

[0114] Examples of the alkylamino group include a methylamino group, a dimethylamino group, a diethylamino group, and a pyrrolidino group. The alkylamino group preferably has 1 to 8 carbon atoms, and more preferably 1 to 4 carbon atoms.

[0115] The alkyl group in the alkylamino group may be further substituted, and a di(alkoxycarbonylalkyl)amino group is preferred. The di(alkoxycarbonylalkyl)amino group preferably has 6 to 10 carbon atoms, and more preferably 6 to 8 carbon atoms.

[0116] As can be used as the above R 4 The substituted aryl group is preferably an aryl group having 6 to 22 carbon atoms in total. For example, 4-chlorophenyl, 2,5-dichlorophenyl, hydroxyphenyl, 2,5-methoxyphenyl, 2-methoxy-5-ethoxycarbonylphenyl, 4-ethoxycarbonylphenyl, 4-ethoxycarbonylphenyl, 4-butoxycarbonylphenyl, 4-octyloxycarbonylphenyl, 4-carboxyphenyl, 3,5-dicarboxyphenyl, 4-methanesulfonylaminophenyl, 4-methylphenyl, 4-methoxyphenyl, 4-ethoxyphenyl, 4-(2-hydroxyethoxy)phenyl, N,N-dimethylaminophenyl, N,N-diethylaminophenyl, 4-(N-carboxymethyl-N-ethylamino)phenyl, 4-{N,N-bis(ethoxycarbonylmethyl)amino}phenyl, 4-{bis(ethoxycarbonylmethyl)amino}carbonylphenyl, 4-ethoxycarbonylphenyl, 4-methanesulfonyloxyphenyl, 4-acetylsulfamoylphenyl, 4-propionylsulfamoylphenyl and 4-methanesulfonylaminophenyl can be mentioned.

[0117] R 5 With R 6 They may be bonded to each other to form a 6-membered ring. During the ring formation, a hydrogen atom may be removed to form an aromatic ring or an aliphatic ring having an unsaturated bond.

[0118] R 5 With R 6 The 6-membered ring formed by bonding to each other is preferably a benzene ring.

[0119] In particular, from the viewpoint of light resistance, it is preferred that R in formula (A1) 1 and R 2 R 1 is an alkyl group, more preferably R 1 is an alkyl group, and R 2 From the same viewpoint, it is more preferred that R 1 and R 2 Each of them is independently an alkyl group, and an alkyl group having 1 to 8 carbon atoms is particularly preferred.

[0120] Furthermore, from the viewpoint of heat resistance and light resistance, it is also preferred that R in formula (A1) 1 and R 2 All are aromatic groups.

[0121] In R 1 and R 2 When each independently represents an aryl group, preferably R 3 , R 5 and R 6 Each independently represents a hydrogen atom, an alkyl group or an aryl group, and R 3 and R 6 At least one of them is a hydrogen atom. Among them, from the viewpoint of heat resistance and light resistance, R 3 represents a hydrogen atom, R 5 and R 6 When each independently represents an alkyl group or an aryl group, it is more preferred that R 3 represents a hydrogen atom, R 5 and R 6 When each independently represents an alkyl group, R 3 represents a hydrogen atom, R 5 and R 6 Each independently represents an alkyl group, and R 5 and R 6 In the case where the dyes are bonded to each other to form a ring and fused to form a pyrrole ring, and form an indole ring together with the pyrrole 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] [Chemical formula 3]

[0123]

[0124] In formula (A2), R 1 ~R 4 Respectively with R in the general formula (A1) 1 ~R 4 The meaning is the same and the preferred method is also the same.

[0125] In formula (A2), R15 represents a substituent. 15 The substituents of R include the substituents included in the above-mentioned substituent group A. 15 , preferably an alkyl group, an aryl group, a halogen atom, an acyl group, an amino group or an alkoxycarbonyl group.

[0126] Can be used as R 15 The alkyl and aryl groups can be used as R 3 , R 5 and R 6 The alkyl and aryl groups are described.

[0127] As can be used as R 15 Examples of the halogen atom include a chlorine atom, a bromine atom and an iodine atom.

[0128] As can be used as R 15 Examples of the acyl group include acetyl, propionyl and butyryl.

[0129] As can be used as R 15 The amino group can be used 4 The description of the amino group which the substituted aryl group may have. Also preferred is a nitrogen-containing heterocyclic group having a 5- to 7-membered ring in which an alkyl group on the nitrogen atom of the amino group is bonded to form a ring.

[0130] As can be used as R 15 The alkoxycarbonyl group is preferably an alkoxycarbonyl group having 2 to 5 carbon atoms, and examples thereof include methoxycarbonyl, ethoxycarbonyl, n-propoxycarbonyl and isopropoxycarbonyl.

[0131] n is an integer of 0 to 4. n is not particularly limited, but is preferably 0 or 1, for example.

[0132] Specific examples of the dye represented by the general formula (A1) are shown below, but the present invention is not limited to these.

[0133] In the following specific examples, Me represents a methyl group.

[0134] [Chemical formula 4]

[0135]

[0136] [Chemical formula 5]

[0137]

[0138] [Chemical formula 6]

[0139]

[0140] As the dye A, in addition to the coloring matter represented by the general formula (A1), the compounds described in paragraphs 0012 to 0067 of JP-A-5-53241 and the compounds described in paragraphs 0011 to 0076 of JP-A-2707371 can be preferably used.

[0141] (Dye D)

[0142] The dye D is not particularly limited as long as it has a main absorption wavelength band at a wavelength of 640 to 730 nm in a wavelength selective absorption filter, and various dyes can be used.

[0143] Specific examples of the dye D include pyrrole methine (PM)-based, rhodamine (RH)-based, boron dipyrromethene (BODIPY)-based, squarine (SQ)-based, and cyanine (CY)-based pigments (dyes).

[0144] From the viewpoint of brightness, the dye D preferably has a sharp absorption waveform in the main absorption wavelength band.

[0145] Among these, Lumogen IR788 and Lumogen IR765 (both trade names) manufactured by BASF Corporation are preferred as the dye D.

[0146] Furthermore, a squarylium dye represented by the following general formula (1) also has a sharp absorption waveform in the main absorption wavelength band and is therefore preferred as the dye D.

[0147] In the present invention, in the pigment represented by following each general formula, cation exists in the mode of delocalization, and has a plurality of tautomeric structures.Therefore, in the present invention, at least one tautomeric structure of some pigment is applicable to the situation of each general formula, and a certain pigment is made as the pigment represented by each general formula.Therefore, the pigment represented by specific general formula also can be called the pigment that can represent at least one tautomeric structure by specific general formula.In the present invention, about the pigment represented by general formula, as long as at least one of its tautomeric structure is applicable to this general formula, then can adopt any tautomeric structure.

[0148] (Dye represented by general formula (1))

[0149] [Chemical formula 7]

[0150] General formula (1)

[0151] In the 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. G represents a heterocyclic group which may have a substituent.

[0152] The aryl group that can be used as A or B is not particularly limited, and may be a group containing a single ring or a group containing a condensed ring. The number of carbon atoms in the aryl group is preferably 6 to 30, more preferably 6 to 20, and further preferably 6 to 12. Examples of the aryl group include groups containing a benzene ring or a naphthalene ring, and groups containing a benzene ring are more preferred.

[0153] As a heterocyclic group that can be used as A or B, there is no particular limitation, including a group comprising an aliphatic heterocycle or an aromatic heterocycle, preferably a group comprising an aromatic heterocycle. As a heteroaryl of an aromatic heterocyclic group, for example, a heteroaryl that can be used as a substituent X described later can be cited. Aromatic heterocyclic groups that can be used as A or B are preferably groups of 5-membered rings or 6-membered rings, more preferably groups of nitrogen-containing 5-membered rings. Specifically, a group comprising any one of a pyrrole ring, a furan ring, a thiophene ring, an imidazole ring, a pyrazole ring, a thiazole ring, an oxazole ring, a triazole ring, an indole ring, an indolenine ring, a pyridine ring, a pyrimidine ring, a quinoline ring, a benzothiazole ring, a benzoxazole ring and a pyrazolotriazole ring can be preferably cited. Among them, a group comprising any one of a pyrrole ring, a pyrazole ring, a thiazole ring, a pyridine ring, a pyrimidine ring and a pyrazolotriazole ring is preferred. The pyrazolotriazole ring includes a fused ring of a pyrazole ring and a triazole ring, and any fused ring may be formed by condensing at least one of these rings. For example, a fused ring in which a pyrazole ring and a triazole ring share one nitrogen atom and one carbon atom is mentioned.

[0154] A and B may be bonded to the squarylium acid moiety (the four-membered ring represented by the general formula (1)) at any position (ring-constituting atom) without particular limitation, but are preferably bonded to a carbon atom.

[0155] G in -CH=G which can be used as A or B represents a heterocyclic group which may have a substituent, and preferred examples include those exemplified as the heterocyclic groups which can be used as A or B. Among them, groups containing any one of a benzoxazole ring, a benzothiazole ring and an indoline ring are preferred.

[0156] At least one of A and B may have a hydrogen-bonding group that forms a hydrogen bond in the molecule.

[0157] A, B, and G may each have a substituent X. When having a substituent X, adjacent substituents may be bonded to each other to further form a ring structure. In addition, a plurality of substituents X may exist.

[0158] As the substituent X, for example, the following groups can be mentioned.

[0159] Alkyl (preferably having 1 to 20 carbon atoms, more preferably 1 to 15, and still more preferably 1 to 8 carbon atoms. For example, methyl, ethyl, propyl, isopropyl, butyl, tert-butyl, isobutyl, pentyl, hexyl, octyl, dodecyl, trifluoromethyl, cyclopentyl, cyclohexyl, etc.),

[0160] Alkenyl (preferably 2 to 20 carbon atoms, more preferably 2 to 12, and even more preferably 2 to 8 carbon atoms. For example, vinyl, allyl, etc.),

[0161] Alkynyl (preferably 2 to 40 carbon atoms, more preferably 2 to 30 carbon atoms, and particularly preferably 2 to 25 carbon atoms. For example, ethynyl, propargyl, etc.),

[0162] Aryl group (preferably 6 to 30 carbon atoms, more preferably 6 to 20 carbon atoms, and even more preferably 6 to 12 carbon atoms. For example, phenyl, naphthyl, etc.),

[0163] Heteroatom-containing cyclic group (including aromatic heteroatom-containing cyclic group and aliphatic heteroatom-containing cyclic group. Includes a group containing a monocyclic or condensed ring, preferably a group containing a monocyclic or condensed ring having 2 to 8 rings, and more preferably a group containing a monocyclic or condensed ring having 2 to 4 rings. The number of heteroatoms constituting the ring is preferably 1 to 3, and the heteroatoms constituting the ring may be nitrogen atoms, oxygen atoms or sulfur atoms, and preferably a group containing a 5-membered ring or a 6-membered ring. The number of carbon atoms constituting the ring of the heteroaryl group is preferably 3 to 30, more preferably 3 to 18, and further preferably 3 to 12. For example, furanyl, thienyl, pyridyl, pyridazinyl, pyrimidinyl, pyrazinyl, triazolyl, imidazolyl, pyrazolyl, thiazolyl, benzimidazolyl, benzoxazolyl, quinazolinyl, phthalazinyl, pyrrolidinyl, imidazolidinyl, morpholinyl, oxazolidinyl, etc.),

[0164] Aralkyl (the alkyl part of the aralkyl group is the same as the above-mentioned alkyl group. The aryl part of the aralkyl group is the same as the above-mentioned aryl group. The number of carbon atoms in the aralkyl group is preferably 7 to 40, more preferably 7 to 30, and further preferably 7 to 25.), ferrocenyl,

[0165] -OR 10 (For example, hydroxyl, alkoxy (methoxy, ethoxy, propoxy, etc.), cycloalkoxy (cyclopentyloxy, cyclohexyloxy, etc.), aryloxy (phenoxy, naphthoxy, etc.), heteroaryloxy (aromatic heterocyclic oxy) are mentioned.)

[0166] -C(=O)R 11 (Acyl groups such as acetyl, ethylcarbonyl, propylcarbonyl, cyclohexylcarbonyl, octylcarbonyl, 2-ethylhexylcarbonyl, phenylcarbonyl, naphthylcarbonyl and pyridylcarbonyl may be mentioned.)

[0167] -C(=O)OR 12(For example, carboxyl, alkoxycarbonyl (methoxycarbonyl, ethoxycarbonyl, butoxycarbonyl, octyloxycarbonyl, etc.), aryloxycarbonyl (phenoxycarbonyl, naphthoxycarbonyl, etc.),

[0168] -OC(=O)R 13 (Acetyloxy group, ethylcarbonyloxy group, butylcarbonyloxy group, octylcarbonyloxy group, phenylcarbonyloxy group and the like are exemplified.)

[0169] -NR 14 R 15 (Amino groups include amino groups (-NH2), ethylamino, dimethylamino, butylamino, dibutylamino, cyclopentylamino, 2-ethylhexylamino, dodecylamino, anilino, naphthylamino, and 2-pyridylamino.)

[0170] -NHCOR 16 (Amides such as methylcarbonylamino, ethylcarbonylamino, dimethylcarbonylamino, propylcarbonylamino, pentylcarbonylamino, cyclohexylcarbonylamino, 2-ethylhexylcarbonylamino, octylcarbonylamino, dodecylcarbonylamino, phenylcarbonylamino and naphthylcarbonylamino may be mentioned.)

[0171] -CONR 17 R 18 (Aminocarbonyl, methylaminocarbonyl, dimethylaminocarbonyl, propylaminocarbonyl, pentylaminocarbonyl, cyclohexylaminocarbonyl, octylaminocarbonyl, 2-ethylhexylaminocarbonyl, dodecylaminocarbonyl, phenylaminocarbonyl, naphthylaminocarbonyl, 2-pyridylaminocarbonyl and other carbamoyl groups may be mentioned.)

[0172] -NHCONR 19 R 20 (Urea groups such as methylurea, ethylurea, pentylurea, cyclohexylurea, octylurea, dodecylurea, phenylurea, naphthylurea, and 2-pyridylsemicarbazide can be mentioned.)

[0173] -NHCOOR 21 ,

[0174] -SR 22 (For example, alkylthio groups (methylthio, ethylthio, propylthio, etc.), cycloalkylthio groups (cyclopentylthio, cyclohexylthio, etc.), arylthio groups (phenylthio, naphthylthio, etc.), heteroarylthio groups (aromatic heterocyclic thio groups) are mentioned.)

[0175] -SO2R 23 (For example, alkylsulfonyl (methylsulfonyl, ethylsulfonyl, butylsulfonyl, cyclohexylsulfonyl, 2-ethylhexylsulfonyl, etc.), arylsulfonyl (benzenesulfonyl, naphthylsulfonyl, 2-pyridylsulfonyl, etc.),

[0176] -OSO2R 24 (Alkylsulfonyloxy groups such as methanesulfonyloxy group may be mentioned.)

[0177] -NHSO2R 25 (sulfonamide groups such as methylsulfonylamino, octylsulfonylamino, 2-ethylhexylsulfonylamino, and trifluoromethylsulfonylamino.),

[0178] -SO2NR 26 R 27 (Aminosulfonyl groups include aminosulfonyl, methylaminosulfonyl, dimethylaminosulfonyl, butylaminosulfonyl, cyclohexylaminosulfonyl, octylaminosulfonyl, phenylaminosulfonyl, 2-pyridylaminosulfonyl and the like.)

[0179] -P(=O)(OR 28 )2 (phosphoryl groups such as dimethoxyphosphoryl and diphenylphosphoryl can be mentioned.),

[0180] Halogen atoms (fluorine, chlorine, bromine and iodine),

[0181] Cyano,

[0182] Nitro.

[0183] Furthermore, the substituent X preferably has a quencher moiety described below in addition to the above-mentioned ferrocenyl group.

[0184] In addition, the above R 10 ~R 28 Each independently represents a hydrogen atom, an aliphatic group, an aromatic group or a heteroatom-containing cyclic group. 10 ~R 28 The aliphatic group and the aromatic group are not particularly limited and can be appropriately selected from the alkyl, alkenyl and alkynyl groups classified as aliphatic groups and the aryl groups classified as aromatic groups among the substituents that can be used as the substituent X. 10 ~R 28 The heteroatom-containing ring group may be aliphatic or aromatic, and can be appropriately selected, for example, from the heteroatom-containing ring groups that can be used as the substituent X (aromatic heteroatom-containing ring groups or aliphatic heteroatom-containing ring groups).

[0185] The alkyl group, alkenyl group and alkynyl group which can be used as the substituent X may be linear, branched or cyclic, and are preferably linear or branched.

[0186] In addition, in -COOR 12 R 12In the case of a hydrogen atom (i.e., a carboxyl group), the hydrogen atom may be dissociated (i.e., a carbonate group) or in the form of a salt. 24 R 24 When it is a hydrogen atom (ie, a sulfo group), the hydrogen atom may be dissociated (ie, a sulfonate group) or may be in the state of a salt.

[0187] The substituent which can be used as the substituent X may further have a substituent. As the substituent which may further have, the substituent X mentioned above can be mentioned.

[0188] Furthermore, adjacent substituents may be bonded to each other to form a ring, and the formed ring is preferably an aliphatic heterocyclic ring or a heteroaryl ring, and the size of the formed ring is not particularly limited, but is preferably a 5-membered ring or a 6-membered ring. Furthermore, the number of the formed rings is not particularly limited, and may be 1 or more than 2.

[0189] The ferrocenyl group which can be used as the substituent X is preferably represented by the general formula (2M).

[0190] [Chemical formula 8]

[0191]

[0192] In the general formula (2M), L represents a single bond or a divalent linking group that is not conjugated with A, B or G in the general formula (1). 1m ~R 9m and (c) and (d) represent a hydrogen atom or a substituent. M is an atom that can constitute a metallocene compound and represents Fe, Co, Ni, Ti, Cu, Zn, Zr, Cr, Mo, Os, Mn, Ru, Sn, Pd, Rh, V or Pt. * represents a bonding portion with A, B or G.

[0193] In the present invention, when L in the general formula (2M) is a single bond, the cyclopentadiene ring directly bonded to A, B or G (having R in the general formula (2M)) 1m The ring) is not included in the conjugated structure conjugated with A, B or G.

[0194] As a divalent linking group that can be used as L, there is no particular limitation as long as it is a linking group that is not conjugated with A, B or G, and the above-mentioned conjugated structure may be contained in the inside or at the end of the cyclopentadiene ring side in the general formula (2M). As a divalent linking group, for example, an alkylene group having 1 to 20 carbon atoms, an arylene group having 6 to 20 carbon atoms, a divalent heterocyclic group obtained by removing two hydrogen atoms from a heterocyclic ring, -CH=CH-, -CO-, -CS-, -NR- (R represents a hydrogen atom or a monovalent substituent.), -O-, -S-, -SO2- or -N=CH-, or a divalent linking group formed by combining a plurality of them (preferably 2 to 6). Preferably, it is a group selected from the group consisting of an alkylene group having 1 to 8 carbon atoms, an arylene group having 6 to 12 carbon atoms, -CH=CH-, -CO-, -NR- (R is as described above), -O-, -S-, -SO2- and -N=CH-, or a divalent linking group formed by combining two or more groups (preferably 2 to 6) selected from the group. Particularly preferably, it is a group selected from the group consisting of an alkylene group having 1 to 4 carbon atoms, a phenylene group, -CO-, -NH-, -O- and -SO2-, or a linking group formed by combining two or more groups (preferably 2 to 6) selected from the group. As a bivalent linking group of combination, there is no particular limitation, but it is preferred to include a group comprising -CO-, -NH-, -O- or -SO2-, and examples include a linking group formed by combining -CO-, -NH-, -O- or -SO2- with two or more kinds, or a linking group formed by combining at least one of -CO-, -NH-, -O- and -SO2- with an alkylene or arylene group. As a linking group formed by combining -CO-, -NH-, -O- or -SO2- with two or more kinds, examples include -COO-, -OCO-, -CONH-, -NHCOO-, -NHCONH-, -SO2NH-. As a linking group formed by combining at least one of -CO-, -NH-, -O- and -SO2- with an alkylene or arylene group, examples include a group formed by combining -CO-, -COO- or -CONH- with an alkylene or arylene group.

[0195] The substituent that can be used as R is not particularly limited and has the same meaning as the substituent X described above.

[0196] L is preferably a single bond, or a group selected from the group consisting of an alkylene group having 1 to 8 carbon atoms, an arylene group having 6 to 12 carbon atoms, -CH=CH-, -CO-, -NR- (R is as described above), -O-, -S-, -SO2- and -N=CH-, or a group consisting of a combination of two or more groups selected from this group.

[0197] L may have one or more substituents. There are no particular restrictions on the substituents that L may have, and for example, they have the same meaning as the above-mentioned substituent X. When L has multiple substituents, the substituents bonded to adjacent atoms may bond to each other to further form a ring structure.

[0198] The alkylene group which can be used as L may be any of linear, branched or cyclic groups as long as it has 1 to 20 carbon atoms, and examples thereof include methylene, ethylene, propylene, methylethylene, methylmethylene, dimethylmethylene, 1,1-dimethylethylene, butylene, 1-methylpropylene, 2-methylpropylene, 1,2-dimethylpropylene, 1,3-dimethylpropylene, 1-methylbutylene, 2-methylbutylene, 3-methylbutylene, 4-methylbutylene, 2,4-dimethylbutylene, 1,3-dimethylbutylene, pentylene, hexylene, heptylene, octylene, ethane-1,1-diyl, propane-2,2-diyl, cyclopropane-1,1-diyl, cyclopropane-1,2-diyl, cyclobutane-1,1-diyl, cyclobutane-1,2-diyl, cyclopentane-1,1-diyl, cyclopentane-1,2-diyl, cyclopentane-1,3-diyl, cyclohexane-1,1-diyl, cyclohexane-1,2-diyl, cyclohexane-1,3-diyl, cyclohexane-1,4-diyl, methylcyclohexane-1,4-diyl and the like.

[0199] When L is used as a linking group containing at least one of -CO-, -CS-, -NR- (R is as described above), -O-, -S-, -SO2- and -N=CH- in the alkylene group, a group such as -CO- can be introduced into any position in the alkylene group, and the number introduced is not particularly limited.

[0200] The arylene group that can be used as L is not particularly limited as long as it is a group having 6 to 20 carbon atoms. For example, it includes a group obtained by further removing one hydrogen atom from each of the groups exemplified as the aryl group having 6 to 20 carbon atoms that can be used as A in the general formula (1).

[0201] The heterocyclic group that can be used as L is not particularly limited, and examples thereof include groups obtained by further removing one hydrogen atom from the groups exemplified as the heterocyclic group that can be used as A.

[0202] In the general formula (2M), the remaining partial structure after removing the linking group L is equivalent to a structure (metallocene structure) formed by removing one hydrogen atom from the metallocene compound. In the present invention, the metallocene compound as the metallocene structure can be used without particular limitation as long as it is a compound that conforms to the partial structure defined by the general formula (2M) (a compound in which a hydrogen atom is bonded instead of L). The metallocene structure defined by the general formula (2M) is specifically described below.

[0203] In the general formula (2M), R 1m ~R 9m represents a hydrogen atom or a substituent. 1m ~R 9m The substituent of R is not particularly limited, but can be selected from the substituents that can be used as the above-mentioned substituent X. 1m ~R 9m A hydrogen atom, a halogen atom, an alkyl group, an acyl group, an alkoxy group, an amino group or an amide group is preferred, a hydrogen atom, a halogen atom, an alkyl group, an acyl group or an alkoxy group is more preferred, a hydrogen atom, a halogen atom, an alkyl group or an acyl group is further preferred, a hydrogen atom, a halogen atom or an alkyl group is particularly preferred, and a hydrogen atom is most preferred.

[0204] As can be used as R 1m ~R 9m The alkyl group that can be used as the alkyl group of the substituent X is preferably an alkyl group having 1 to 8 carbon atoms, for example, methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl, isobutyl, pentyl, tert-pentyl, hexyl, octyl, and 2-ethylhexyl.

[0205] The alkyl group may have a halogen atom as a substituent. Examples of the alkyl group substituted with a halogen atom include chloromethyl, dichloromethyl, trichloromethyl, bromomethyl, dibromomethyl, tribromomethyl, fluoromethyl, difluoromethyl, trifluoromethyl, 2,2,2-trifluoroethyl, perfluoroethyl, perfluoropropyl, and perfluorobutyl.

[0206] And, can be used as R 1mIn the alkyl groups such as alkyl, at least one methylene group forming the carbon chain may be substituted by -O- or -CO-. Examples of the alkyl group in which the methylene group is substituted by -O- include methoxy, ethoxy, propoxy, isopropoxy, isobutoxy, sec-butoxy, tert-butoxy, 2-methoxyethoxy, chloromethoxy, dichloromethoxy, trichloromethoxy, bromomethoxy, dibromomethoxy, tribromomethoxy, fluoromethoxy, difluoromethoxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, perfluoroethoxy, perfluoropropoxy, and alkyl groups in which the methylene group at the end of the carbon chain is substituted by 2-methoxyethyl, etc. Examples of the alkyl group in which the methylene group is substituted by -CO- include acetyl, propionyl, monochloroacetyl, dichloroacetyl, trichloroacetyl, trifluoroacetyl, propan-2-on-1-yl, butan-2-on-1-yl, etc.

[0207] In the general formula (2M), M is an atom that can constitute a metallocene compound and represents Fe, Co, Ni, Ti, Cu, Zn, Zr, Cr, Mo, Os, Mn, Ru, Sn, Pd, Rh, V or Pt. Among them, M is preferably Fe, Ti, Co, Ni, Zr, Ru or Os, more preferably Fe, Ti, Ni, Ru or Os, further preferably Fe or Ti, and most preferably Fe.

[0208] As the group represented by the general formula (2M), it is preferred that L, R 1m ~R 9m and M are preferably combined with each other, for example, a single bond as L or a group selected from the group consisting of an alkylene group having 2 to 8 carbon atoms, an arylene group having 6 to 12 carbon atoms, -CH=CH-, -CO-, -NR- (R is as described above), -O-, -S-, -SO2- and -N=CH-, or a group consisting of a combination of two or more groups selected from the group, as R 1m ~R 9m A group consisting of a hydrogen atom, a halogen atom, an alkyl group, an acyl group or an alkoxy group and Fe as M.

[0209] Alkyl, alkenyl, alkynyl, aralkyl, aryl and heteroaryl groups which can be used as the substituent X, and 10 ~R 28The aliphatic group, aromatic group and heteroatom-containing cyclic group may further have a substituent, respectively, or may be unsubstituted. As a substituent that may be further possessed, there is no particular restriction, but it is preferably selected from an alkyl, aryl, amino, alkoxy, aryloxy, aromatic heterocyclic oxy, acyl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, acylamino, alkoxycarbonylamino, aryloxycarbonylamino, sulfonylamino, alkylthio, arylthio, aromatic heterocyclic sulfo, sulfonyl, ferrocenyl, hydroxyl, sulfhydryl, halogen atom, cyano, sulfo and carboxyl substituents, more preferably selected from an alkyl, aryl, alkoxy, aryloxy, aromatic heterocyclic oxy, acyl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, alkylthio, arylthio, aromatic heterocyclic sulfo, sulfonyl, ferrocenyl, hydroxyl, sulfhydryl, halogen atom, cyano, sulfo and carboxyl substituents. These groups can be appropriately selected from the substituents that can be used as the above-mentioned substituent X.

[0210] When the dye D is a coloring matter represented by the general formula (1), it is preferably a coloring matter represented by the following general formula (14).

[0211] [Chemical formula 9]

[0212]

[0213] In the general formula (14), R 1 and R 2 Each independently represents a hydrogen atom or a substituent. 1 With R 2 They may be the same or different and may be bonded to each other to form a ring.

[0214] As can be used as R 1 and R 2 The substituent of is not particularly limited, but examples thereof include alkyl groups (including cycloalkyl groups), alkenyl groups, alkynyl groups, aryl groups, heteroatom-containing cyclic groups (including aromatic heteroatom-containing cyclic groups and aliphatic heteroatom-containing cyclic groups), alkoxy groups, cycloalkyloxy groups, aryloxy groups, heteroaryloxy groups, alkylthio groups, cycloalkylthio groups, arylthio groups, heteroarylthio groups, alkoxycarbonyl groups, aryloxycarbonyl groups, phosphoryl groups, sulfamoyl groups, acyl groups, acyloxy groups, amide groups, sulfonamide groups, carbamoyl groups, urea groups, alkylsulfonyl groups, arylsulfonyl groups, amino groups, alkylsulfonyloxy groups, cyano groups, nitro groups, halogen atoms, hydroxyl groups, and the like in the above-mentioned substituents X.

[0215] And, R 41 and R 42 With the above R 1 and R 2 Same meaning.

[0216] R 1 , R 2 , R 41 and R42 It may further have a substituent. Examples of the substituent that may further have include the substituent X mentioned above.

[0217] Among them, R 1 , R 2 , R 41 and R 42 An alkyl group, an alkenyl group, an aryl group or a heteroaryl group is preferred, an alkyl group, an aryl group or a heteroaryl group is more preferred, and an alkyl group or an aryl group is further preferred.

[0218] B in the general formula (14) 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 of is an aromatic ring. 1 ~B 4 At least 2 of them are carbon atoms, more preferably B 1 ~B 4 All carbon atoms.

[0219] Can be used as B 1 ~B 4 The carbon atoms have hydrogen atoms or substituents. 1 ~B 4 The number of carbon atoms having a substituent among the carbon atoms in is not particularly limited, but is preferably 0, 1 or 2, and more preferably 1. In particular, B is preferably 1 and B 4 are carbon atoms, and at least one of them has a substituent.

[0220] As can be used as B 1 ~B 4 The substituents on the carbon atoms of are not particularly limited, and examples thereof include 1 and R 2 The above-mentioned substituents. Among them, preferably, it is an alkyl group, an alkoxy group, an alkoxycarbonyl group, an aryl group, an acyl group, an amide group, a sulfonamide group, a carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group, an amino group, a cyano group, a nitro group, a halogen atom or a hydroxyl group, and more preferably, it is an alkyl group, an alkoxy group, an alkoxycarbonyl group, an aryl group, an acyl group, an amide group, a sulfonamide group, a carbamoyl group, an amino group, a cyano group, a nitro group, a halogen atom or a hydroxyl group.

[0221] And, B 5 , B 6 , B 7 and B 8 Respectively with the above B 1 , B 2 , B3 and B 4 Same meaning.

[0222] Can be used as B 1 ~B 8 The substituent possessed by the carbon atom of may further have a substituent. As the substituent that may further have, the above-mentioned substituent X can be mentioned.

[0223] As can be used as B 1 , B 4 , B 5 and B 8 The substituent possessed by the carbon atom is further preferably an alkyl group, an alkoxy group, a hydroxyl group, an amide group, a sulfonamide group or a carbamoyl group, and particularly preferably an alkyl group, an alkoxy group, a hydroxyl group, an amide group or a sulfonamide group, and most preferably a hydroxyl group, an amide group or a sulfonamide group.

[0224] As can be used as B 2 , B 3 , B 6 and B 7 The substituents possessed by the carbon atoms are further preferably alkyl, alkoxy, alkoxycarbonyl, acyl, amino, cyano, nitro or halogen atoms, and it is particularly preferred that any one of the substituents is an electron withdrawing group (for example, alkoxycarbonyl, acyl, cyano, nitro or halogen atom).

[0225] In the general formula (14), R 1 With R 2 Can bond to each other to form a ring, R 1 or R 2 With B 2 or B 3 The substituents possessed may be bonded to form a ring. 41 With R 42 Can bond to each other to form a ring, R 41 or R 42 With B 6 or B 7 The substituents may be bonded to form a ring.

[0226] In the above, the ring formed is preferably a heterocyclic ring or a heteroaryl ring. The size of the ring formed is not particularly limited, but preferably a 5-membered ring or a 6-membered ring. In addition, the number of rings formed is not particularly limited, and may be 1 or 2 or more. As a form of forming 2 or more rings, for example, R 1 With B 2 Substituents and R 2 With B 3 The substituents possessed are respectively bonded to form two rings.

[0227] Specific examples of the dye D are shown below. The following compounds F-1 to F-33 are pigments represented by the general formula (1).

[0228] [Chemical formula 10]

[0229]

[0230] [Chemical formula 11]

[0231]

[0232] The main absorption wavelength band of the dye D in the wavelength selective absorption filter is preferably 660 to 730 nm.

[0233] The content of the dye A in the wavelength selective absorption filter of the present invention is not particularly limited as long as the wavelength selective absorption filter of the present invention exhibits the desired blue light cutoff function, and can be appropriately adjusted according to the absorption waveform or molar absorption coefficient in the blue light cutoff wavelength region of the dye A. For example, the lower limit is preferably 0.01% by mass or more, and more preferably 0.1% by mass or more. As for the upper limit, there is no particular limitation as long as the wavelength selective absorption filter of the present invention exhibits the desired relative brightness and correlated color temperature, but for example, it is preferably 45% by mass or less, more preferably 30% by mass or less, further preferably 15% by mass or less, and particularly preferably 10% by mass or less.

[0234] The content of the dye D in the wavelength selective absorption filter of the present invention can be appropriately adjusted according to the content of the dye A in the wavelength selective absorption filter of the present invention so that the wavelength selective absorption filter of the present invention exhibits a desired correlated color temperature. For example, the lower limit is preferably 0.05% by mass or more, more preferably 0.2% by mass or more, and the upper limit is preferably 50% by mass or less, more preferably 40% by mass or less, further preferably 20% by mass or less, and particularly preferably 10% by mass or less.

[0235] The content ratio of dye A and dye D in the wavelength selective absorption filter of the present invention is appropriately adjusted depending on the types of each dye. For example, in terms of mass ratio, dye A:dye D=1:0.1-10 is preferred, and 1:0.2-6 is more preferred.

[0236] When the dye D is the built-in quencher dye, the content of the built-in quencher dye in the wavelength selective absorption filter of the present invention is preferably 0.1% by mass or more from the viewpoint of antireflection effect, and the upper limit is preferably 45% by mass or less.

[0237] <Resin>

[0238] There are no particular limitations on the resin contained in the wavelength selective absorption filter of the present invention (hereinafter also referred to as "matrix resin") as long as it can disperse (preferably dissolve) the above-mentioned dye and has the desired light transmittance (in the visible region of wavelengths of 400 to 800 nm, the transmittance is preferably 80% or more).

[0239] In the case where dye D is a squaryl cyanine pigment represented by general formula (1), the above-mentioned matrix resin is preferably a low-polarity matrix resin in which the squaryl cyanine pigment can show clearer absorption. By showing clearer absorption through the above-mentioned squaryl cyanine pigment, the wavelength selective absorption filter of the present invention can further suppress the reduction of relative brightness. Here, low polarity refers to that the fd value defined by the following relational formula I is preferably above 0.50.

[0240] Relationship I: fd = δd / (δd+δp+δh)

[0241] In relational formula I, δd, δp, and δh represent the term corresponding to the London dispersion force, the term corresponding to the dipole-dipole force, and the term corresponding to the hydrogen bonding force, respectively, relative to the solubility parameter δt calculated by the Hoy method. The specific calculation method will be described later. That is, fd represents the ratio of δd to the sum of δd, δp, and δh.

[0242] By setting the fd value to 0.50 or more, a clearer absorption waveform can be easily obtained.

[0243] Furthermore, when the wavelength selective absorption filter of the present invention includes two or more types of matrix resins, the fd value is calculated as follows.

[0244] fd=∑(w i ·fd i )

[0245] Here, w i represents the mass fraction of the i-th matrix resin, fd i represents the fd value of the ith base resin.

[0246] -Term corresponding to London dispersion forceδd-

[0247] The term δd corresponding to the London dispersion force refers to the term δd in the literature “Properties of Polymers 3 rd The δd was calculated based on the description in the above column of "2) Method of Hoy (1985, 1989)" on pages 214 to 220 of "ELSEVIER, (1990)" and the Amorphous Polymers described in the above column.

[0248] -The term corresponding to the dipole-dipole force δp-

[0249] The term δp corresponding to the dipole-dipole force is referred to in the literature "Properties of Polymers3 rd The δp was calculated based on the description in the above column of "2) Method of Hoy (1985, 1989)" on pages 214 to 220 of "ELSEVIER, (1990)" and the Amorphous Polymers described in the above column.

[0250] -Term corresponding to hydrogen bonding force δh-

[0251] The term δh corresponding to the hydrogen bond force refers to the reference "Properties of Polymers3 rd The δh was calculated based on the description in the above column of "2) Method of Hoy (1985, 1989)" on pages 214 to 220 of "ELSEVIER, (1990)" and the Amorphous Polymers described in the above column.

[0252] Furthermore, if the matrix resin is a resin showing constant hydrophobicity, the water content of the wavelength selective absorption filter of the present invention can be set to a low water content of, for example, 0.5% or less, which is preferable from the viewpoint of improving the light resistance of the wavelength selective absorption filter of the present invention.

[0253] In addition, the resin may contain any conventional components in addition to the polymer. However, the fd of the matrix resin described above is a calculated value for the polymer constituting the matrix resin.

[0254] Preferred examples of the matrix resin include polystyrene resin and cyclic polyolefin resin, and polystyrene resin is more preferred. Generally, the fd value of polystyrene resin is 0.45 to 0.60, and the fd value of cyclic polystyrene resin is 0.45 to 0.70. As described above, the fd value is preferably 0.50 or more.

[0255] Furthermore, for example, in addition to these preferred resins, it is also preferable to use a resin component that imparts functionality to the wavelength selective absorption filter, such as a stretchable resin component and a peelable control resin component, which will be described later. That is, in the present invention, the matrix resin is used to include a stretchable resin component and a peelable control resin component in addition to the above-mentioned resins.

[0256] From the viewpoint of clarifying the absorption waveform of the dye, the matrix resin preferably contains a polystyrene resin.

[0257] (Polystyrene resin)

[0258] The polystyrene contained in the above-mentioned polystyrene resin refers to a polymer containing a styrene component. The polystyrene preferably contains a styrene component of 50% by mass or more. The wavelength selective absorption filter of the present invention may contain one type of polystyrene or two or more types. Here, the styrene component refers to a structural unit derived from a monomer having a styrene skeleton in its structure.

[0259] From the viewpoint of controlling the photoelastic coefficient and hygroscopicity to values ​​within the range preferred for a wavelength selective absorption filter, the polystyrene preferably contains 70% by mass or more of a styrene component, and further preferably contains 85% by mass or more. Furthermore, the polystyrene is also preferably composed only of a styrene component.

[0260] As polystyrene composed only of styrene components, homopolymers of styrene compounds and copolymers of two or more styrene compounds can be cited. Here, the styrene compound refers to a compound having a styrene skeleton in its structure, and in addition to styrene, it also includes a compound in which a substituent is introduced within the range in which the ethylenically unsaturated bond of styrene can function as a reactive (polymerizable) group.

[0261] Specific examples of styrene compounds include styrene; alkyl styrenes such as α-methylstyrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, 3,5-dimethylstyrene, 2,4-dimethylstyrene, o-ethylstyrene, p-ethylstyrene and tert-butylstyrene; substituted styrenes in which hydroxyl groups, alkoxy groups, carboxyl groups and halogen atoms are introduced into the benzene nucleus of styrenes such as hydroxystyrene, tert-butoxystyrene, vinylbenzoic acid, o-chlorostyrene and p-chlorostyrene, etc. Among them, the polystyrene is preferably a homopolymer of styrene (i.e., polystyrene) from the viewpoint of easy availability and material price.

[0262] Furthermore, there is no particular limitation on the structural components other than the styrene component that may be contained in the above-mentioned polystyrene. That is, the polystyrene may be a styrene-diene copolymer or a styrene-polymerizable unsaturated carboxylic acid ester copolymer, etc. Furthermore, a mixture of polystyrene and a synthetic rubber (for example, polybutadiene and polyisoprene) can also be used. Furthermore, a high-impact polystyrene (HIPS) obtained by graft polymerization of styrene and a synthetic rubber is also preferred. Furthermore, it is also preferred to disperse a rubber-like elastomer in a continuous phase of a polymer containing a styrene component (for example, a copolymer of a styrene component and a (meth)acrylate component), and to obtain a polystyrene by graft polymerization of the above-mentioned copolymer and the above-mentioned rubber-like elastomer (called a grafted high-impact polystyrene "grafted HIPS"). Furthermore, the so-called styrene-based elastomer can also be preferably used.

[0263] Furthermore, the polystyrene may be hydrogenated (may be hydrogenated polystyrene). The hydrogenated polystyrene is not particularly limited, but preferably includes hydrogenated styrene-butadiene-styrene block copolymer (SEBS) obtained by adding hydrogen to SBS (styrene-butadiene-styrene block copolymer) and hydrogenated styrene-isoprene-styrene block copolymer (SEPS) obtained by adding hydrogen to SIS (styrene-isoprene-styrene block copolymer). The hydrogenated polystyrene may be used alone or in combination of two or more.

[0264] The polystyrene may be a modified polystyrene. The modified polystyrene is not particularly limited, but may be a polystyrene into which a reactive group such as a polar group is introduced, and specifically, preferably, an acid-modified polystyrene such as a maleic acid-modified polystyrene and an epoxy-modified polystyrene are mentioned.

[0265] As the polystyrene, a plurality of types of polystyrenes having different compositions, molecular weights, etc. may be used in combination.

[0266] Polystyrene resins can be obtained by conventional methods such as anionic, bulk, suspension, emulsification or solution polymerization. In addition, in polystyrene, at least a portion of the unsaturated double bonds of the benzene ring of the conjugated diene and styrene monomers can be hydrogenated. The hydrogenation rate can be measured by a nuclear magnetic resonance device (NMR).

[0267] As the polystyrene resin, commercially available products can be used, for example, "CLEAREN 530L" and "CLEAREN 730L" manufactured by Denka Company Limited, "TUFPRENE 126S" and "ASAPRENET 411" manufactured by Asahi Kasei Corporation, "Clayton D1102A" and "Clayton D1116A" manufactured by Kraton Corporation, "Styrolux S" and "Styrolux T" manufactured by Styrolution, "ASAFLEX 840" and "ASAFLEX 860" (these are SBS) manufactured by Asahi Kasei Chemicals Corporation, "679", "HF77" and "SGP-10" manufactured by PS Japan Corporation, "DICSTYRENEX C-515" and "DICSTYRENEX C-535" (these are GPPS) manufactured by DIC Corporation, and "PS Japan "475D", "H0103", "HT478" manufactured by Corporation, "DICSTYRENEGH-8300-5" manufactured by DIC Corporation (the above are HIPS), etc. As hydrogenated polystyrene resins, for example, "TUFTEC H series" manufactured by Asahi Kasei Chemicals Corporation, "Clayton G series" manufactured by Shell Japan Ltd. (the above are SEBS), "DYNARON" (hydrogenated styrene-butadiene random copolymer) manufactured by JSR Corporation, "SEPTON" (SEPS) manufactured by KURARAY CO., LTD., etc., can be cited. And, as modified polystyrene resins, for example, "TUFTEC M series" manufactured by Asahi Kasei Chemicals Corporation, "EPOFRIEND" manufactured by Daicel Corporation, "polar group modified DYNARON" manufactured by JSR Corporation, "RESEDA" manufactured by TOAGOSEI CO., LTD., etc. can be cited.

[0268] The wavelength selective absorption filter of the present invention preferably contains polyphenylene ether resin in addition to the above-mentioned polystyrene resin. By containing both polystyrene resin and polyphenylene ether resin, the toughness of the wavelength selective absorption filter is improved, and the generation of defects such as cracks can be suppressed even in severe environments such as high temperature and high humidity.

[0269] However, when the wavelength selective absorption filter of the present invention contains a polyphenylene ether resin in addition to the above-mentioned polystyrene resin, the fd value of the polyphenylene ether resin is not considered in the calculation of the above-mentioned fd value.

[0270] As the polyphenylene ether resin, ZYLON 201A, ZYLON 202A, ZYLON S203A, etc. manufactured by Asahi Kasei Corporation can be preferably used. In addition, a resin obtained by premixing a polystyrene resin and a polyphenylene ether resin can be used. As a mixed resin of a polystyrene resin and a polyphenylene ether resin, for example, ZYLON 1002H, ZYLON 1000H, ZYLON 600H, ZYLON 500H, ZYLON 400H, ZYLON 300H, ZYLON 200H, etc. manufactured by Asahi Kasei Corporation can be preferably used.

[0271] In the wavelength selective absorption filter of the present invention, when polystyrene resin and polyphenylene ether resin are contained, the mass ratio of the two is preferably 99 / 1 to 50 / 50, more preferably 98 / 2 to 60 / 40, and further preferably 95 / 5 to 70 / 30 in terms of polystyrene resin / polyphenylene ether resin. By setting the mixing ratio of the polyphenylene ether resin within the above preferred range, the wavelength selective absorption filter has sufficient toughness, and when solution film formation is performed, the solvent can be appropriately volatilized.

[0272] (Cyclic polyolefin resin)

[0273] The cyclic olefin compound forming the cyclic polyolefin contained in the cyclic polyolefin resin is not particularly limited as long as it is a compound having a ring structure containing a carbon-carbon double bond, and examples thereof include norbornene compounds, monocyclic cyclic olefin compounds other than norbornene compounds, cyclic conjugated diene compounds, and vinyl alicyclic hydrocarbon compounds.

[0274] Examples of the cyclic polyolefin include (1) polymers containing structural units derived from norbornene compounds, (2) polymers containing structural units derived from monocyclic cyclic 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 products of polymers containing structural units derived from each of the compounds (1) to (4).

[0275] In the present invention, the polymer including a structural unit derived from a norbornene compound and the polymer including a structural unit derived from a monocyclic cyclic olefin compound include ring-opening polymers of the respective compounds.

[0276] The cyclic polyolefin is not particularly limited, but is preferably a polymer having a structural unit derived from a norbornene compound represented by the following general formula (A-II) or (A-III). The polymer having a structural unit represented by the following general formula (A-II) is an addition polymer of a norbornene compound, and the polymer having a structural unit represented by the following general formula (A-III) is a ring-opening polymer of a norbornene compound.

[0277] [Chemical formula 12]

[0278]

[0279] In the general formulae (A-II) and (A-III), m is an integer of 0 to 4, and preferably 0 or 1.

[0280] In the general formulas (A-II) and (A-III), R 3 ~R 6 Each independently represents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms.

[0281] The hydrocarbon group in general formulae (AI) to (A-III) is not particularly limited as long as it is a group containing carbon atoms and hydrogen atoms, and examples thereof include alkyl groups, alkenyl groups, alkynyl groups, and aryl groups (aromatic hydrocarbon groups). Among them, alkyl groups and aryl groups are preferred.

[0282] In the general formulas (A-II) and (A-III), X 2 and X 3 , Y 2 and Y 3 Each independently represents a hydrogen atom, a hydrocarbon group having 1 to 10 carbon atoms, a halogen atom, a hydrocarbon group having 1 to 10 carbon atoms substituted with a halogen atom, -(CH2) n COOR 11 、-(CH2) n OCOR 12 、-(CH2) n NCO, -(CH2) n NO2, -(CH2) n CN, -(CH2) n CONR 13 R 14 、-(CH2) n NR 13 R 14 、-(CH2) n OZ or -(CH2) n W or X 2 With Y 2 or X 3 With Y 3 Bonded to each other, (-CO)2O or (-CO)2NR15 .

[0283] Here, R 11 ~R 15 Each independently represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, Z represents a hydrocarbon group or a hydrocarbon group substituted with a halogen, and W represents Si(R 16 ) p D (3-p) (R 16 represents a hydrocarbon group having 1 to 10 carbon atoms, D represents a halogen atom, -OCOR 17 OR 17 (R 17 is a hydrocarbon group having 1 to 10 carbon atoms). p is an integer of 0 to 3). n is an integer of 0 to 10, preferably 0 to 8, more preferably 0 to 6.

[0284] In the general formulae (A-II) and (A-III), R 3 ~R 6 A hydrogen atom or -CH 3 is preferred, and a hydrogen atom is more preferred from the viewpoint of moisture permeability.

[0285] X 2 and X 3 A hydrogen atom, -CH3 or -C2H5 is preferred, respectively. From the viewpoint of moisture permeability, a hydrogen atom is more preferred.

[0286] Y 2 and Y 3 Preferably, a hydrogen atom, a halogen atom (especially, a chlorine atom) or -(CH2)nCOOR 11 (especially, -COOCH3), and a hydrogen atom is more preferable from the viewpoint of moisture permeability.

[0287] Other groups may be appropriately selected.

[0288] The polymer having the structural unit represented by the general formula (A-II) or (A-III) may further include at least one structural unit represented by the following general formula (AI).

[0289] [Chemical formula 13]

[0290]

[0291] In the general formula (AI), R 1 and R 2 Each independently represents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms, and X 1 and Y 1 each independently represents a hydrogen atom, a hydrocarbon group having 1 to 10 carbon atoms, a halogen atom, a hydrocarbon group having 1 to 10 carbon atoms substituted with a halogen atom, -(CH2)nCOOR 11、-(CH2)nOCOR 12 , -(CH2)nNCO, -(CH2)nNO2, -(CH2)nCN, -(CH2)nCONR 13 R 14 、-(CH2)nNR 13 R 14 , -(CH2)nOZ, -(CH2)nW, or X 1 With Y 1 Bonded to each other, (-CO)2O or (-CO)2NR 15 .

[0292] Here, R 11 ~R 15 Each independently represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, Z represents a hydrocarbon group or a hydrocarbon group substituted with a halogen, and W represents Si(R 16 ) p D (3-p） (R 16 represents a hydrocarbon group having 1 to 10 carbon atoms, D represents a halogen atom, -OCOR 17 OR 17 (R 17 is a hydrocarbon group having 1 to 10 carbon atoms). p is an integer of 0 to 3). n is an integer of 0 to 10.

[0293] From the viewpoint of adhesion, the cyclic polyolefin having a structural unit represented by the general formula (A-II) or (A-III) preferably contains 90% by mass or less of the structural unit derived from the above-mentioned norbornene compound relative to the total mass of the cyclic polyolefin, more preferably 30 to 85% by mass, further preferably 50 to 79% by mass, and most preferably 60 to 75% by mass. Here, the ratio of the structural unit derived from the norbornene compound represents an average value in the cyclic polyolefin.

[0294] The addition (co)polymer of a norbornene compound is described in Japanese Unexamined Patent Publication No. 10-7732, Japanese Translation of National Publication No. 2002-504184, US Patent Publication No. 2004 / 229157A1, and International Publication No. 2004 / 070463.

[0295] The polymer of the norbornene compound is obtained by subjecting norbornene compounds (for example, polycyclic unsaturated compounds of norbornene) to addition polymerization.

[0296] Furthermore, as the polymer of the norbornene compound, there can be mentioned copolymers obtained by addition polymerization of the norbornene compound and olefins such as ethylene, propylene and butylene, conjugated dienes such as butadiene and isoprene, non-conjugated dienes such as ethylidene norbornene, and olefinic unsaturated compounds such as acrylonitrile, acrylic acid, methacrylic acid, maleic anhydride, acrylic acid ester, methacrylic acid ester, maleimide, vinyl acetate and vinyl chloride, as required. Among them, copolymers of the norbornene compound and propylene are preferred.

[0297] Examples of such addition (co)polymers of norbornene compounds include APL8008T (Tg 70°C), APL6011T (Tg 105°C), APL6013T (Tg 125°C), and APL6015T (Tg 145°C), which are sold under the trade name of Apel by Mitsui Chemicals, INC. and have different glass transition temperatures (Tg). In addition, pellets such as TOPAS8007, TOPAS6013, and TOPAS6015 are sold by Polyplastics Co., Ltd. In addition, Appear3000 is sold by Ferrania.

[0298] The polymer of the norbornene compound may be a commercially available product, for example, it is commercially available under the trade names of Arton G or Arton F from JSR Corporation, and it is commercially available under the trade names of Zeonor ZF14, ZF16, Zeonex 250, or Zeonex 280 from Zeon Corporation.

[0299] The hydrogenated polymer of the norbornene compound can be synthesized by subjecting the norbornene compound to addition polymerization or metathesis ring-opening polymerization and then hydrogenating. The synthesis method is described in, for example, Japanese Patent Laid-Open No. 1-240517, Japanese Patent Laid-Open No. 7-196736, Japanese Patent Laid-Open No. 60-26024, Japanese Patent Laid-Open No. 62-19801, Japanese Patent Laid-Open No. 2003-159767, and Japanese Patent Laid-Open No. 2004-309979.

[0300] The molecular weight of the cyclic polyolefin can be appropriately selected according to the purpose of use, but the mass average molecular weight of polyisoprene or polystyrene converted by cyclohexane solution (toluene solution when the polymer is not dissolved) measured by gel permeation chromatography is usually in the range of 5000 to 500000, preferably 8000 to 200000, and more preferably 10000 to 100000. The polymer having a molecular weight in the above range can achieve both mechanical strength and molding processability of the molded body at a high level and in a balanced manner.

[0301] The wavelength selective absorption filter of the present invention preferably contains 5% by mass or more of the matrix resin, more preferably 20% by mass or more, further preferably 50% by mass or more, and particularly preferably 70% by mass or more.

[0302] The content of the matrix resin in the wavelength selective absorption filter of the present invention is usually 99.90% by mass or less, and preferably 99.85% by mass or less.

[0303] The wavelength selective absorption filter of the present invention may contain two or more cyclic polystyrenes, and polymers having different component ratios and molecular weights may be used in combination. In this case, the total content of each polymer is within the above range.

[0304] (Elongation resin component)

[0305] The wavelength selective absorption filter of the present invention can appropriately select a component showing elongation (also referred to as an elongation resin component) as a resin component. Specifically, acrylonitrile-butadiene-styrene resin (ABS resin), styrene-butadiene resin (SB resin), isoprene resin, butadiene resin, polyether-urethane resin and silicone resin can be cited. In addition, these resins can be further appropriately hydrogenated.

[0306] As the elongation resin component, ABS resin or SB resin is preferably used, and SB resin is more preferably used.

[0307] As the SB resin, for example, commercially available resins can be used. Examples of such commercial products include TR2000, TR2003, and TR2250 (these are trade names, manufactured by JSR Corporation), CLEAREN 210M, 220M, and 730V (these are trade names, manufactured by Denka Company Limited), ASAFLEX 800S, 805, 810, 825, 830, and 840 (these are trade names, manufactured by Asahi Kasei Corporation), and Eporex SB2400, SB2610, and SB2710 (these are trade names, manufactured by Sumitomo Chemical Co., Ltd.).

[0308] The wavelength selective absorption filter of the present invention preferably contains 15 to 95% by mass of the elongation resin component in the matrix resin, more preferably 20 to 50% by mass, and even more preferably 25 to 45% by mass.

[0309] When a sample having a thickness of 30 μm and a width of 10 mm is prepared using the elongation resin component alone and its elongation at break at 25° C. is measured according to JIS 7127, the elongation at break is preferably 10% or more, more preferably 20% or more.

[0310] (Releasability Control Resin Component)

[0311] Regarding the wavelength selective absorption filter of the present invention, when it is manufactured by a method including a step of peeling the wavelength selective absorption filter of the present invention from a peeling film in the later-described method for manufacturing the wavelength selective absorption filter of the present invention, it is preferable that a component that controls peelability (peelability controlling resin component) be included as a resin component. By controlling the peelability of the wavelength selective absorption filter of the present invention from the peeling film, it is possible to prevent peeling marks from being left on the wavelength selective absorption filter of the present invention after peeling, and it is possible to cope with various processing speeds in the peeling process. As a result, it is possible to obtain a preferred effect in terms of improving the quality and productivity of the wavelength selective absorption filter of the present invention.

[0312] The release control resin component is not particularly limited and can be appropriately selected according to the type of release film. As described later, when a polyester polymer film is used as the release film, the release control resin component is preferably a polyester resin (also referred to as a polyester additive).

[0313] The polyester additive can be obtained by a conventional method such as a dehydration condensation reaction of a polybasic acid and a polyol, and a dehydration condensation reaction of adding a dibasic acid anhydride to a polyol. Preferably, the polyester additive is a polycondensation ester formed from a dibasic acid and a diol.

[0314] The mass average molecular weight (Mw) of the polyester-based additive is preferably 500 to 50,000, more preferably 750 to 40,000, and even more preferably 2,000 to 30,000.

[0315] When the mass average molecular weight of the polyester additive is equal to or higher than the preferred lower limit, it is preferred from the viewpoint of brittleness and moist heat resistance, and when it is equal to or lower than the preferred upper limit, it is preferred from the viewpoint of compatibility with the resin.

[0316] The mass average molecular weight of the polyester additive is the value of the mass average molecular weight (Mw) measured under the following conditions in terms of standard polystyrene. The molecular weight distribution (Mw / Mn) can also be measured under the same conditions. In addition, Mn is the number average molecular weight in terms of standard polystyrene.

[0317] GPC: Gel permeation chromatography apparatus (HLC-8220GPC manufactured by Tosoh Corporation,

[0318] Column: HXL-H, TSK gel G7000HXL, 2 TSKgel GMHXL, TSK gel G2000HXL,

[0319] Eluent: tetrahydrofuran,

[0320] Flow rate: 1mL / min,

[0321] Sample concentration: 0.7-0.8% by mass,

[0322] Sample injection volume: 70μL,

[0323] Measuring temperature: 40℃,

[0324] Detector: Differential refractometer (RI) (40°C),

[0325] Standard material; TSK standard polystyrene manufactured by Tosoh Corporation)

[0326] As the dibasic acid component constituting the polyester-based additive, preferably, dicarboxylic acid is used.

[0327] Examples of the dicarboxylic acid include aliphatic dicarboxylic acids and aromatic dicarboxylic acids, and aromatic dicarboxylic acids or a mixture of aromatic dicarboxylic acids and aliphatic dicarboxylic acids can be preferably used.

[0328] Among the aromatic dicarboxylic acids, those having 8 to 20 carbon atoms are preferred, and those having 8 to 14 carbon atoms are more preferred. Specifically, at least one of phthalic acid, isophthalic acid, and terephthalic acid is preferably used.

[0329] Among aliphatic dicarboxylic acids, those having 3 to 8 carbon atoms are preferred, and those having 4 to 6 carbon atoms are more preferred. Specifically, at least one of succinic acid, maleic acid, adipic acid and glutaric acid is preferred, and at least one of succinic acid and adipic acid is more preferred.

[0330] Furthermore, examples of the diol component constituting the polyester-based additive include aliphatic diols and aromatic diols, and aliphatic diols are preferred.

[0331] Among aliphatic diols, aliphatic diols having 2 to 4 carbon atoms are preferred, and aliphatic diols having 2 to 3 carbon atoms are more preferred.

[0332] Examples of the aliphatic diol include ethylene glycol, diethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butylene glycol, and 1,4-butylene glycol. These can be used alone or in combination of two or more.

[0333] The polyester-based additive is particularly preferably a compound obtained by condensing at least one of phthalic acid, isophthalic acid, and terephthalic acid with an aliphatic diol.

[0334] The terminal of the polyester additive can be sealed by reacting with a monocarboxylic acid. The monocarboxylic acid used for sealing is preferably an aliphatic monocarboxylic acid, and preferably acetic acid, propionic acid, butyric acid, benzoic acid and derivatives thereof are mentioned, more preferably acetic acid or propionic acid, and further preferably acetic acid.

[0335] Examples of commercially available polyester additives include ester resins manufactured by The Nippon Synthetic Chemical Industry Co., Ltd. (e.g., LP050, TP290, LP035, LP033, TP217, TP220), and ester resins BYRON manufactured by TOYOBO CO., LTD. (e.g., BYRON245, BYRONGK890, BYRON103, BYRON200, BYRON550, BYRON GK880).

[0336] The content of the peelability control resin component in the wavelength selective absorption filter of the present invention is preferably 0.05% by mass or more, more preferably 0.1% by mass or more in the matrix resin. In addition, the upper limit is preferably 25% by mass or less, more preferably 20% by mass or less, and further preferably 15% by mass or less. From the viewpoint of obtaining appropriate adhesion, the above preferred range is preferred.

[0337] <Anti-fading agent>

[0338] The wavelength selective absorption filter of the present invention preferably contains an anti-fading agent for dyes (also simply referred to as an anti-fading agent) to prevent fading of the dyes including the dye A and the dye D described above.

[0339] As the above-mentioned anti-fading agent, commonly used anti-fading agents such as the antioxidants described in paragraphs

[0143] to

[0165] of International Publication No. 2015 / 005398, the free radical scavengers described in paragraphs

[0166] to

[0199] of International Publication No. 2015 / 005398, and the degradation inhibitors described in paragraphs

[0205] to

[0206] of International Publication No. 2015 / 005398 can be used without particular limitation.

[0340] As the anti-fading agent, a compound represented by the following general formula (IV) can be preferably used.

[0341] [Chemical formula 14]

[0342]

[0343] In formula (IV), R 10 represents an alkyl group, an alkenyl group, an aryl group, a heteroatom-containing cyclic group or a group consisting of R 18 CO-、R 19 SO2- or R 20 A group represented by NHCO-. Here, R 18 , R 19 and R 20 Each independently represents an alkyl group, an alkenyl group, an aryl group or a heteroatom-containing ring group. 11 and R 12 Each independently represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkoxy group or an alkenyloxy group, and R 13 , R 14 , R 15 , R 16 and R 17 Each independently represents a hydrogen atom, an alkyl group, an alkenyl group or an aryl group.

[0344] Among them, R 10 ~R 20 The alkyl group in the above-mentioned group includes an aralkyl group.

[0345] As R in formula (IV) 10 Examples of the alkyl group represented by include methyl, ethyl, propyl, benzyl, etc.; examples of the alkenyl group include allyl, etc.; examples of the aryl group include phenyl, etc.; examples of the heteroatom-containing ring group include tetrahydropyranyl, pyrimidinyl, etc. 18 , R 19 and R 20 Each independently represents an alkyl group (e.g., methyl, ethyl, n-propyl, n-butyl, benzyl, etc.), an alkenyl group (e.g., allyl, etc.), an aryl group (e.g., phenyl, methoxyphenyl, etc.), or a heteroatom-containing ring group (e.g., pyridyl, pyrimidinyl, etc.).

[0346] As R in formula (IV) 11 or R 12 Examples of the halogen atom represented by include chlorine and bromine; examples of the alkyl group include methyl, ethyl, n-butyl, benzyl, etc.; examples of the alkenyl group include allyl, etc.; examples of the alkoxy group include methoxy, ethoxy, benzyloxy, etc.; examples of the alkenyloxy group include 2-propenyloxy, etc.

[0347] As R in formula (IV) 13 , R 14 , R 15 , R 16 or R 17Examples of the alkyl group represented by include methyl, ethyl, n-butyl, benzyl, etc.; examples of the alkenyl group include 2-propenyl, etc.; and examples of the aryl group include phenyl, methoxyphenyl, chlorophenyl, etc.

[0348] R 10 ~R 20 It may further have a substituent, and examples of the substituent include R 10 ~R 20 Representing each group.

[0349] Specific examples of the compound represented by the general formula (IV) are shown below, but the present invention is not limited to these.

[0350] [Chemical formula 15]

[0351] General formula (IV)

[0352] IV-1

[0353]

[0354] IV-2

[0355]

[0356] IV-3

[0357]

[0358] IV-4

[0359]

[0360] [Chemical formula 16]

[0361] IV-5

[0362] IV-6

[0363] IV-7

[0364]

[0365] IV-8

[0366] IV-9

[0367] As the anti-fading agent, a compound represented by the following general formula [III] can also be preferably used.

[0368] [Chemical formula 17]

[0369] General formula [III]

[0370]

[0371] In the general formula [III], R 31 represents an aliphatic group or an aromatic group, and Y represents a non-metal atom group required to form a 5- to 7-membered ring together with the nitrogen atom.

[0372] In the general formula [III], R 31 represents an aliphatic group or an aromatic group, preferably an alkyl group, an aryl group or a heterocyclic group (preferably an aliphatic heterocyclic group), and more preferably an aryl group.

[0373] Examples of the heterocyclic ring formed by Y together with a nitrogen atom include a pyridine ring, a piperazine ring, a morpholine ring, a thiomorpholine ring, a thiomorpholine-1,1-dione ring, a pyrrolidine ring, and an imidazolidine ring.

[0374] Furthermore, the above heterocyclic ring may have a substituent, and examples of the substituent include an alkyl group and an alkoxy group.

[0375] Specific examples of the compound represented by the general formula [III] are shown below, but the present invention is not limited to these.

[0376] [Chemical formula 18]

[0377] III-1

[0378] III-2

[0379]

[0380] III-3

[0381] III-4

[0382] III-5

[0383] In addition to the above specific examples, specific examples of the compound represented by the above general formula [III] include the illustrative compounds B-1 to B-65 described on pages 8 to 11 of the specification of Japanese Patent Application Publication No. 2-167543 and the illustrative compounds (1) to (120) described on pages 4 to 7 of the specification of Japanese Patent Application Publication No. 63-95439.

[0384] The content of the anti-fading agent in the wavelength selective absorption filter of the present invention is preferably 1 to 15% by mass, more preferably 5 to 15% by mass, further preferably 5 to 12.5% ​​by mass, and particularly preferably 10 to 12.5% ​​by mass.

[0385] By containing the anti-fading agent within the above preferred range, the wavelength selective absorption filter of the present invention can improve the light resistance of the dye (pigment) without causing side effects such as discoloration.

[0386] <Other ingredients>

[0387] The wavelength selective absorption filter of the present invention may contain a matting agent, a leveling agent (surfactant), and the like in addition to the aforementioned dye, matrix resin, and anti-fading agent for the dye.

[0388] (Matting agent)

[0389] In the scope of not damaging the effect of the present invention, microparticles can be added on the surface of the wavelength selective absorption filter of the present invention to give slip and prevent adhesion. As the microparticle, preferably use the silicon dioxide (silicon dioxide, SiO2) whose surface is coated by hydrophobic groups and adopts the mode of secondary particles. In addition, in the microparticle, microparticles such as titanium dioxide, aluminum oxide, zirconium oxide, calcium carbonate, talcum, clay, sintered kaolin, sintered calcium silicate, hydrated calcium silicate, aluminum silicate, magnesium silicate and calcium phosphate can be used together with silicon dioxide or instead of silicon dioxide. As commercially available microparticles, R972 and NX90S (all manufactured by NIPPON AEROSIL CO., LTD., trade name) etc. can be cited.

[0390] The particles function as so-called matting agents, and minute irregularities are formed on the surface of the wavelength selective absorption filter of the present invention by adding the particles. Even if the wavelength selective absorption filters of the present invention overlap with each other or the wavelength selective absorption filter of the present invention overlaps with other films due to the irregularities, they will not adhere to each other, thereby ensuring sliding properties.

[0391] When the wavelength selective absorption filter of the present invention contains a matting agent as fine particles, if there are 10 4 Pieces / mm 2 The above-mentioned protrusions with a height of 30 nm or more have a particularly large effect of improving the sliding property and the adhesion property.

[0392] From the viewpoint of improving the adhesion and the slipping property, the matting agent fine particles are preferably applied to the surface layer. As a method of applying the fine particles to the surface layer, there can be mentioned a method based on multilayer casting and coating.

[0393] The content of the extinction agent in the wavelength selective absorption filter of the present invention can be appropriately adjusted depending on the purpose.

[0394] However, when the wavelength selective absorption filter of the present invention is provided with a gas barrier layer described later, it is preferred that the matting agent fine particles are provided on the surface of the wavelength selective absorption filter that is in contact with the gas barrier layer within a range that does not impair the gas barrier properties.

[0395] (Leveling agent)

[0396] The wavelength selective absorption filter of the present invention can be appropriately mixed with a leveling agent (surfactant). As the leveling agent, commonly used compounds can be used, and fluorinated surfactants are particularly preferred. Specifically, for example, the compounds described in paragraphs

[0028] to

[0056] in the specification of Japanese Patent Application Publication No. 2001-330725 can be cited.

[0397] The content of the leveling agent in the wavelength selective absorption filter of the present invention can be appropriately adjusted depending on the purpose.

[0398] The wavelength selective absorption filter of the present invention may contain, in addition to the above-mentioned components, low molecular plasticizers, oligomer plasticizers, retardation regulators, ultraviolet absorbers, degradation inhibitors, peeling accelerators, infrared absorbers, antioxidants, fillers, compatibilizers, and the like.

[0399] <Method for Manufacturing Wavelength Selective Absorption Filter>

[0400] The wavelength selective absorption filter of the present invention can be produced by a conventional method by a solution film forming method, a melt extrusion method, or a method (coating method) of forming a coating on a substrate film (release film) by any method, and can also be appropriately combined with stretching. The wavelength selective absorption filter of the present invention is preferably produced by a coating method.

[0401] (Solution film method)

[0402] In the solution film forming method, a solution is prepared by dissolving the material constituting the wavelength selective absorption filter of the present invention in an organic solvent or water, and after appropriately performing a concentration step and a filtration step, the solution is uniformly cast onto a support. Next, the semi-dried film is peeled off from the support, and the solvent is dried in a drying zone while the two ends of the web are appropriately held by a clamp or the like. In addition, stretching can also be performed separately during the drying of the film or after the drying is completed.

[0403] (Melt extrusion method)

[0404] In the melt extrusion method, the material constituting the wavelength selective absorption filter of the present invention (hereinafter also referred to as "the material of the wavelength selective absorption filter") is melted by heat, and after appropriately performing a filtering process, etc., it is uniformly cast onto a support. Next, the film solidified by cooling is peeled off so that it can be stretched appropriately. In the case where the main material of the wavelength selective absorption filter of the present invention is a thermoplastic polymer resin, the main material of the stripping film is also selected to be a thermoplastic polymer resin, so that the polymer resin set to a molten state can be formed into a film by a known co-extrusion method. At this time, the adhesion between the wavelength selective absorption filter of the present invention and the stripping film can be controlled by adjusting the types of polymers of the wavelength selective absorption filter and the stripping film of the present invention and the additives mixed in each layer, or adjusting the stretching temperature, stretching speed, stretching ratio, etc. of the co-extruded film.

[0405] As a coextrusion method, for example, a coextrusion T-die method, a coextrusion inflation method, a coextrusion lamination method, etc. can be cited. Among them, the coextrusion T-die method is preferred. The coextrusion T-die method has a feed block method and a multi-branch method. Among them, from the viewpoint of being able to reduce thickness deviation, the multi-branch method is particularly preferred.

[0406] In the case of the co-extrusion T-die method, the melting temperature of the resin in the extruder having the T-die is preferably set to a temperature higher than the glass transition temperature (Tg) of each resin by 80° C. or more, more preferably higher by 100° C. or more, and preferably higher by 180° C. or less, more preferably higher by 150° C. or less. By setting the melting temperature of the resin in the extruder to a value higher than the lower limit of the above preferred range, the fluidity of the resin can be sufficiently improved, and by setting it to a value lower than the upper limit of the above preferred range, the degradation of the resin can be prevented.

[0407] Usually, the sheet-like molten resin extruded from the opening of the die is brought into close contact with the cooling drum. The method for bringing the molten resin into close contact with the cooling drum is not particularly limited, and examples thereof include an air knife method, a vacuum box method, and an electrostatic bonding method.

[0408] The number of cooling rollers is not particularly limited, but is usually 2 or more. Also, as the configuration method of the cooling rollers, for example, a linear type, a Z type, an L type, etc. can be cited, but there is no particular limitation. Also, the method by which the molten resin extruded from the opening of the mold passes through the cooling rollers is also not particularly limited.

[0409] The close contact state of the extruded sheet resin to the cooling roller changes according to the temperature of the cooling roller. If the temperature of the cooling roller is increased, the close contact becomes better, but if the temperature is increased too much, the sheet resin may not be peeled off from the cooling roller and may be entangled on the roller. Therefore, regarding the temperature of the cooling roller, if the glass transition temperature of the resin of the layer in contact with the roller among the resin extruded from the die is set to Tg, it is preferably set to (Tg+30)°C or less, and more preferably set to (Tg-5)°C to (Tg-45)°C. By setting the temperature of the cooling roller within the above preferred range, it is possible to prevent undesirable conditions such as slippage and scratches.

[0410] Here, it is preferred to reduce the content of residual solvent in the film before stretching. As methods for achieving this purpose, for example, there are: (1) reducing the residual solvent in the resin that becomes the raw material; (2) pre-drying the resin before forming the film before stretching; and other methods. Pre-drying is performed, for example, by setting the resin in the form of particles or the like and using a hot air dryer or the like. The drying temperature is preferably above 100°C, and the drying time is preferably above 2 hours. By pre-drying, the residual solvent in the film before stretching can be reduced, and the extruded sheet-like resin can be prevented from bubbling.

[0411] (Coating method)

[0412] In the coating method, a solution of the material of the wavelength selective absorption filter is coated on a release film to form a coating. In order to control the adhesion between the release film and the coating, a release agent or the like may be appropriately applied in advance on the surface of the release film. The coating can be used by peeling off the release film after being laminated with other components via an adhesive layer in a later process. As for the adhesive constituting the adhesive layer, any adhesive can be appropriately used. In addition, in a state where a solution of the material of the wavelength selective absorption filter is coated on the release film or a state where the coating is laminated, the release film can be appropriately stretched together.

[0413] The solvent used in the solution of the wavelength selective absorption filter material can be appropriately selected from the viewpoints of being able to dissolve or disperse the wavelength selective absorption filter material; being easy to form a uniform surface in the coating process and the drying process; being able to ensure liquid storage properties; and having an appropriate saturated vapor pressure.

[0414] - Addition of dyes (pigments) and anti-fading agents, etc. -

[0415] There is no particular limitation on the timing of adding the dye to the wavelength selective absorption filter material as long as it is added at the time of film formation. For example, it can be added at the time of synthesis of the matrix resin, or mixed with the wavelength selective absorption filter material when preparing the coating liquid of the wavelength selective absorption filter material. In addition, the same is true for other components that can be contained in the wavelength selective absorption filter, such as anti-fading agents.

[0416] -Release film-

[0417] The film thickness of the release film used to form the wavelength selective absorption filter of the present invention by a coating method or the like is preferably 5 to 100 μm, more preferably 10 to 75 μm, and further preferably 15 to 55 μm. If the film thickness is above the above preferred lower limit, it is easy to ensure sufficient mechanical strength and it is not easy to cause problems such as curling, wrinkling, and buckling. In addition, if the film thickness is below the above preferred upper limit, when the multilayer film of the wavelength selective absorption filter and the release film of the present invention is stored in the form of a long roll, for example, it is easy to adjust the surface pressure applied to the multilayer film within an appropriate range, and it is difficult to cause adhesion problems.

[0418] The surface energy of the release film is not particularly limited, but the bonding strength between the wavelength selective absorption filter of the present invention and the release film can be adjusted by adjusting the correlation between the surface energy of the material of the wavelength selective absorption filter and the coating solution and the surface energy of the surface of the release film on the side where the wavelength selective absorption filter of the present invention is formed. If the surface energy difference is reduced, there is a tendency for the bonding strength to increase, and if the surface energy difference is increased, there is a tendency for the bonding strength to decrease, and the surface energy difference can be appropriately set.

[0419] The surface energy of the release film can be calculated from the contact angle values ​​of water and diiodomethane by the Owens method. The contact angle can be measured using, for example, DM901 (manufactured by Kyowa Interface Science Co., Ltd., contact angle measuring instrument).

[0420] The surface energy of the side of the wavelength selective absorption filter of the present invention formed by the peeling film is preferably 41.0 to 48.0 mN / m, and more preferably 42.0 to 48.0 mN / m. If the surface energy is above the above preferred lower limit, the uniformity of the thickness of the wavelength selective absorption filter of the present invention can be improved, and if it is below the above preferred upper limit, it is easy to control the peeling force between the wavelength selective absorption filter of the present invention and the peeling film within an appropriate range.

[0421] Furthermore, the surface roughness of the release film is not particularly limited, but can be adjusted based on the relationship between the surface energy, hardness, and surface roughness of the wavelength selective absorption filter surface of the present invention and the surface energy and hardness of the surface of the release film on the side opposite to the side on which the wavelength selective absorption filter of the present invention is formed, for example, to prevent adhesion failure when the multilayer film of the wavelength selective absorption filter of the present invention and the release film is stored in a long roll form. If the surface roughness is increased, there is a tendency to suppress adhesion failure, and if the surface roughness is reduced, there is a tendency to reduce the surface roughness of the wavelength selective absorption filter of the present invention and reduce the haze of the wavelength selective absorption filter of the present invention, and it can be appropriately set.

[0422] As such a release film, any material and film can be appropriately used. As specific materials, polyester polymers (including polyethylene terephthalate films), olefin polymers, cycloolefin polymers, (meth) acrylic polymers, cellulose polymers, polyamide polymers, etc. can be cited. In addition, in order to adjust the surface properties of the release film, the surface treatment can be appropriately performed. In order to reduce the surface energy, for example, corona treatment, normal temperature plasma treatment, saponification treatment, etc. can be performed, and in order to increase the surface energy, silicone treatment, fluorine treatment, olefin treatment, etc. can be performed.

[0423] -Peeling force of wavelength selective absorption filter and peeling film-

[0424] In the case of forming the wavelength selective absorption filter of the present invention by a coating method, the peeling force between the wavelength selective absorption filter of the present invention and the peeling film can be controlled by adjusting the material of the wavelength selective absorption filter of the present invention, the material of the peeling film, the internal deformation of the wavelength selective absorption filter of the present invention, etc. The peeling force can be measured, for example, in a test of peeling the peeling film in a 90° direction. The peeling force when measured at a speed of 300 mm / min is preferably 0.001 to 5 N / 25 mm, more preferably 0.01 to 3 N / 25 mm, and further preferably 0.05 to 1 N / 25 mm. If it is above the above preferred lower limit, peeling of the peeling film outside the peeling process can be prevented, and if it is below the above preferred upper limit, peeling defects in the peeling process (for example, zipping or breakage of the wavelength selective absorption filter of the present invention) can be prevented.

[0425] <Film Thickness of the Wavelength Selective Absorption Filter of the Present Invention>

[0426] The film thickness of the wavelength selective absorption filter of the present invention is not particularly limited, but is preferably 1 to 18 μm, more preferably 1 to 12 μm, and further preferably 2 to 8 μm. If it is below the above preferred upper limit, by adding a high concentration of dye to the film, the reduction in polarization caused by the fluorescence emitted by the dye (pigment) can be suppressed. In addition, the effects of quenchers and anti-fading agents are also easily manifested. On the other hand, if it is above the above preferred lower limit, it is easy to maintain the uniformity of absorbance within the surface.

[0427] In the present invention, the film thickness of 1 to 18 μm means that the thickness of the wavelength selective absorption filter of the present invention is within the range of 1 to 18 μm regardless of where the thickness is 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 manufactured by ANRITSU CORPORATION.

[0428] <Blue light cutoff, correlated color temperature and relative brightness of the wavelength selective absorption filter of the present invention>

[0429] When the wavelength selective absorption filter of the present invention is used for the front surface of an image display device, it is possible to achieve both an excellent blue light cutoff function and an excellent correlated color temperature while suppressing a decrease in relative brightness.

[0430] The above-mentioned blue light cutoff, correlated color temperature, and relative brightness are values ​​calculated for a display device equipped with the wavelength selective absorption filter of the present invention by the method described in the examples described later.

[0431] (Blu-ray cutoff)

[0432] When the wavelength selective absorption filter of the present invention is used for the front surface of an image display device, it is preferable to satisfy the following conditions from the viewpoint of having an excellent blue light cutting function. LowBlue Light Content of Rheinland Japan Ltd. Specifically, it is preferred that the Ratio Blue to Green Ratio is less than 200%, the Blue Power is less than 20%, and the Toxic Blue is less than 50%.

[0433] [Ratio Blue to Green Ratio (%)] = (absorption maximum value in the blue wavelength region) / (maximum value of absorption maximum of colors other than the blue wavelength region) × 100

[0434] [Blue Power (%)] = (the integrated value of the intensity of light in the wavelength range of ±20 nm relative to the wavelength that gives the maximum value in the blue wavelength region) / (the integrated value of the intensity of light at wavelengths of 380 to 780 nm) × 100

[0435] [Toxic Blue (%)] = (the integrated value of the intensity of light at a wavelength of 415 to 455 nm) / (the integrated value of the intensity of light at a wavelength of 400 to 500 nm) × 100

[0436] (Correlated Color Temperature)

[0437] The correlated color temperature is one of the methods of displaying colors, and indicates the value of the temperature of a black body that gives a chromaticity closest to the chromaticity of the radiated light. The correlated color temperature is obtained by drawing a vertical line from the chromaticity point of the radiated light to the black body locus on the CIE1960uv chromaticity diagram, and finding it as the absolute temperature corresponding to the intersection point. For example, it can be calculated using software disclosed on the homepage described in the examples.

[0438] The correlated color temperature of 6000K corresponds to sunlight in a high altitude with clear air and sunny weather, and is preferably close thereto.

[0439] Therefore, when the wavelength selective absorption filter of the present invention is used on the front surface of an image display device, the correlated color temperature is preferably 5500 to 7000K, more preferably 5700 to 6800K, further preferably 5900 to 6600K, and particularly preferably 5900 to 6400K.

[0440] (Relative brightness)

[0441] When the wavelength selective absorption filter of the present invention is used on the front surface of an image display device, the relative brightness is preferably 84% or more, more preferably 86% or more. The upper limit is not particularly limited, but is practically 95% or less.

[0442] Specifically, when the amount of dye A is adjusted so that the Toxic Blue value is 48.6% to 48.8%, and the amount of dye D is adjusted so that the correlated color temperature is 5900K to 6000K, the relative brightness preferably satisfies 82% or more. However, the Ratio Blue to Green Ratio is less than 200%, and the Blue Power is less than 20%.

[0443] <Color Gamut of the Wavelength Selective Absorption Filter of the Present Invention>

[0444] Furthermore, when the wavelength selective absorption filter of the present invention is used on the front surface of an image display device, the color gamut is preferably 83% or more, more preferably 85% or more of the color gamut specified in DCI-P3. The upper limit is not particularly limited, but is practically 99% or less.

[0445] The color gamut described above is a value calculated for each display device including the wavelength selective absorption filter of the present invention by the method described in the examples described later.

[0446] <Light Resistance of the Wavelength Selective Absorption Filter of the Present Invention>

[0447] From the viewpoint of preventing degradation of display performance due to external light, the wavelength selective absorption filter of the present invention preferably has light resistance. Specifically, the light resistance is evaluated in the following manner.

[0448] For the wavelength selective absorption filter of the present invention, a super xenon lamp weathering tester SX75 (trade name, light source: 7.5 kW water-cooled xenon lamp, irradiation illumination: 150 W / m) manufactured by Suga Test Instruments Co., Ltd. was used. 2The samples were irradiated with light (ultraviolet rays 300 to 400 nm) at 60°C and 50% relative humidity for 200 hours. The maximum absorption values ​​before and after the irradiation were measured, and the light resistance was calculated by the following formula.

[0449] [Light resistance (%)] = ([absorption maximum value after 200 hours of light irradiation] / [absorption maximum value before light irradiation]) × 100

[0450] The light resistance test is equivalent to an accelerated test, so as a practical level, there is no problem as long as the light resistance is 10% or more. As the wavelength selective absorption filter of the present invention, the light resistance is preferably 50% or more, more preferably 70% or more. There is no particular restriction on the upper limit, but it is actually 98% or less.

[0451] <Absorbance of the Wavelength Selective Absorption Filter of the Present Invention>

[0452] In the wavelength selective absorption filter of the present invention, the absorbance at the maximum absorption wavelength showing the maximum absorbance at a wavelength of 400 to 430 nm (hereinafter also referred to as "Ab(λ max )”.) is preferably 0.3 or more, more preferably 0.5 or more, and further preferably 0.8 or more.

[0453] In the wavelength selective absorption filter of the present invention, the absorbance at the maximum absorption wavelength showing the maximum absorbance at a wavelength of 640 to 730 nm (hereinafter also referred to as "Ab(λ max )”.) is preferably 0.3 or more, more preferably 0.5 or more, and further preferably 0.8 or more.

[0454] In the wavelength selective absorption filter of the present invention, the absorbance at a wavelength of 450 nm is preferably 2.5 or less, more preferably 2.0 or less, and further preferably 1.5 or less.

[0455] However, the absorbance of the wavelength selective absorption filter of the present invention can be adjusted by the type, addition amount or film thickness of the dye.

[0456] The absorbance can be measured and calculated by the method described in the Examples.

[0457] <Water Content of the Wavelength Selective Absorption Filter of the Present Invention>

[0458] The water content of the wavelength selective absorption filter of the present invention is preferably 0.5 mass % or less, and more preferably 0.3 mass % or less, at 25° C. and a relative humidity of 80%, regardless of the film thickness, from the viewpoint of durability.

[0459] In this specification, the moisture content of the wavelength selective absorption filter of the present invention can be measured using a sample with a thicker film as needed. After the sample is conditioned for more than 24 hours, it is measured by the Karl Fischer method using a moisture meter and sample drying devices "CA-03" and "VA-05" (both manufactured by Mitsubishi Chemical Corporation), and the moisture content (g) is divided by the sample mass (g, including the moisture content) to calculate.

[0460] <Glass Transition Temperature (Tg) of the Wavelength Selective Absorption Filter of the Present Invention>

[0461] The glass transition temperature of the wavelength selective absorption filter of the present invention is preferably 50° C. or higher and 140° C. or lower. It is more preferably 60° C. or higher and 130° C. or lower, and further preferably 70° C. or higher and 120° C. or lower. If the glass transition temperature is above the preferred lower limit, the degradation of the wavelength selective absorption filter of the present invention when used at high temperature can be suppressed, and if the glass transition temperature is below the preferred upper limit, the organic solvent used in the coating liquid can be suppressed from remaining in the wavelength selective absorption filter.

[0462] The glass transition temperature of the wavelength selective absorption filter of the present invention can be measured by the following method.

[0463] Using a differential scanning calorimeter (X-DSC7000 (manufactured by IT Keisoku Seigyo Co., Ltd.)), 20 mg of the wavelength selective absorption filter was placed in a measuring pan, and the temperature was raised from 30°C to 120°C at a rate of 10°C / min in a nitrogen stream and maintained for 15 minutes, and then cooled to 30°C at a rate of -20°C / min. Then, the temperature was raised from 30°C to 250°C at a rate of 10°C / min again, and the temperature at which the baseline began to deviate from the low temperature side was defined as the glass transition temperature Tg.

[0464] The glass transition temperature of the wavelength selective absorption filter of the present invention can be adjusted by mixing two or more polymers having different glass transition temperatures or by changing the amount of low molecular weight compounds such as anti-fading agents added.

[0465] <Processing of the wavelength selective absorption filter of the present invention>

[0466] The wavelength selective absorption filter of the present invention can be hydrophilized by any glow discharge treatment, corona discharge treatment or alkali saponification treatment, and corona discharge treatment is preferably used. It is also preferable to apply the method disclosed in Japanese Patent Application Laid-Open No. 6-94915 or Japanese Patent Application Laid-Open No. 6-118232.

[0467] Furthermore, the obtained film may be subjected to a heat treatment step, a superheated water vapor contact step, an organic solvent contact step, etc. as necessary. Furthermore, a surface treatment may be appropriately performed.

[0468] Furthermore, as the adhesive layer, a layer made of an adhesive composition containing a (meth)acrylic resin, a styrene resin, a silicone resin or the like as a base polymer and adding a crosslinking agent such as an isocyanate compound, an epoxy compound or an aziridine compound thereto can be used.

[0469] Preferably, the description of the adhesive layer in the OLED display device described later can be applied.

[0470] <Gas Barrier Layer>

[0471] The wavelength selective absorption filter of the present invention may have a gas barrier layer on at least one surface.

[0472] The material forming the gas barrier layer is not particularly limited, and examples thereof include organic materials such as polyvinyl alcohol and polyvinylidene chloride (preferably crystalline resins), organic-inorganic hybrid materials such as sol-gel materials, SiO2, SiO x , SiON, SiNx, Al2O3 and other inorganic materials. The gas barrier layer may be a single layer or a multilayer. In the case of a multilayer, a structure such as an inorganic dielectric multilayer film and a multilayer film obtained by alternately stacking organic materials and inorganic materials can be cited.

[0473] The wavelength selective absorption filter of the present invention has at least a gas barrier layer on the surface in contact with air when the wavelength selective absorption filter of the present invention is used, so that the reduction in the absorption intensity of the dye in the wavelength selective absorption filter of the present invention can be suppressed. As long as the gas barrier layer is provided at the interface in contact with air of the wavelength selective absorption filter of the present invention, the gas barrier layer may be provided only on one side of the wavelength selective absorption filter of the present invention, or may be provided on both sides.

[0474] In the case where the gas barrier layer contains a crystalline resin, the gas barrier layer contains a crystalline resin, preferably has a thickness of 0.1 μm to 10 μm, and an oxygen permeability of 60 cc / m 2 ·day·atm or less.

[0475] In the gas barrier layer, the “crystalline resin” is a resin having a melting point at which it changes from a crystal phase to a liquid when the temperature is increased, and can impart gas barrier properties with respect to oxygen to the gas barrier layer.

[0476] (Crystalline resin)

[0477] As the crystalline resin contained in the gas barrier layer, any crystalline resin can be used without particular limitation as long as it has gas barrier properties and can provide the gas barrier layer with a desired oxygen permeability.

[0478] Examples of the crystalline resin include polyvinyl alcohol and polyvinylidene chloride. Polyvinyl alcohol is preferred because the crystal portion can effectively suppress gas permeation.

[0479] The polyvinyl alcohol may be modified or unmodified. Examples of the modified polyvinyl alcohol include modified polyvinyl alcohols into which groups such as acetoacetyl groups and carboxyl groups are introduced.

[0480] From the viewpoint of further improving oxygen barrier properties, the saponification degree of the polyvinyl alcohol is preferably 80.0 mol% or more, more preferably 90.0 mol% or more, further preferably 97.0 mol% or more, and particularly preferably 98.0 mol% or more. There is no particular restriction on the upper limit, but in practice it is 99.99 mol% or less. The saponification degree of the polyvinyl alcohol is a value calculated by the method described in JIS K 67261994.

[0481] The gas barrier layer may contain any component contained in the gas barrier layer, generally within the range not impairing the effect of the present invention. For example, in addition to the above-mentioned crystalline resin, it may contain non-crystalline resin materials, organic-inorganic hybrid materials such as sol-gel materials, SiO2, SiO x 、SiON、SiN x And inorganic materials such as Al2O3.

[0482] Furthermore, the gas barrier layer may contain solvents such as water and organic solvents generated during the production process within a range not impairing the effects of the present invention.

[0483] The content of the crystalline resin in the gas barrier layer is, for example, preferably 90% by mass or more, more preferably 95% by mass or more in 100% by mass of the total mass of the gas barrier layer. The upper limit is not particularly limited, but may be 100% by mass.

[0484] The oxygen permeability of the gas barrier layer is preferably 60 cc / m 2 ·day·atm or less, more preferably 50cc / m 2 ·day·atm or less, more preferably 30cc / m 2 ·day·atm or less, particularly preferably 10cc / m 2 ·day·atm or less, preferably 5cc / m 2 ·day·atm or less, most preferably 1cc / m 2·day·atm or less. The actual lower limit is 0.001cc / m 2 ·day·atm or more, for example, preferably more than 0.05cc / m 2 When the oxygen permeability is within the above-described preferred range, the light resistance can be further improved.

[0485] The oxygen permeability of the gas barrier layer is a value measured by a gas permeability test method based on JIS K 7126-2 2006. As a measuring device, for example, an oxygen permeability tester, OX-TRAN2 / 21 (trade name) manufactured by MOCON can be used. The measuring conditions are a temperature of 25° C. and a relative humidity of 50%.

[0486] The oxygen permeability can be expressed using the SI unit (fm) / (s·Pa). 2 ·day·atm). fm is pronounced as femtometer, and means 1fm=10 -15 m.

[0487] From the viewpoint of further improving light resistance, the thickness of the gas barrier layer is preferably 0.5 μm to 5 μm, more preferably 1.0 μm to 4.0 μm.

[0488] The thickness of the gas barrier layer is measured by taking a cross-sectional photograph using a field emission scanning electron microscope S-4800 (trade name) manufactured by Hitachi High-Technologies Corporation or the like.

[0489] The crystallinity of the crystalline resin contained in the gas barrier layer is preferably 25% or more, more preferably 40% or more, and further preferably 45% or more. The upper limit is not particularly limited, but is practically 55% or less, and preferably 50% or less.

[0490] The crystallinity of the crystalline resin contained in the gas barrier layer is a value measured and calculated by the following method according to the method described in J. Appl. Pol. Sci., 81, 762 (2001).

[0491] The sample peeled from the gas barrier layer was heated at 10°C / min in the range of 20°C to 260°C using a DSC (differential scanning calorimeter) to measure the heat of fusion 1. In addition, as the heat of fusion 2 of complete crystallization, the value described in J. Appl. Pol. Sci., 81, 762 (2001) was used. Using the obtained heat of fusion 1 and heat of fusion 2, the crystallinity was calculated by the following formula.

[0492] [Crystallinity (%)] = ([Heat of Melting 1] / [Heat of Melting 2]) × 100

[0493] In addition, the heat of fusion 1 and the heat of fusion 2 can be expressed in the same unit, usually Jg -1 .

[0494] <Method for producing gas barrier layer>

[0495] The method for forming the gas barrier layer is not particularly limited, but according to conventional methods, for example, in the case of organic materials, a method of producing by a casting method such as spin coating and slit coating can be cited. In addition, a method of attaching a commercially available resin gas barrier film or a pre-made resin gas barrier film to the wavelength selective absorption filter of the present invention can be cited. In addition, in the case of inorganic materials, a plasma CVD method, a sputtering method, and a vapor deposition method can be cited.

[0496] <Optical Film>

[0497] The wavelength selective absorption filter of the present invention may have any optical film as appropriate within a range not impairing the effects of the present invention.

[0498] Regarding any of the above optical films, there are no particular restrictions on optical properties and materials, but a film containing at least one of cellulose ester resin, acrylic resin, cyclic olefin resin and polyethylene terephthalate resin (or as a main component) can be preferably used. In addition, an optically isotropic film can be used, and an optically anisotropic phase difference film can also be used.

[0499] As for the above-mentioned arbitrary optical films, as an optical film containing a cellulose ester resin, for example, FUJITAC TD80UL (manufactured by FUJIFILM Corporation) or the like can be used.

[0500] Regarding any of the above-mentioned optical films, as an optical film containing an acrylic resin, an optical film containing a (meth) acrylic resin containing a styrene resin described in Japanese Patent No. 4570042, an optical film containing a (meth) acrylic resin having a glutarimide ring structure in the main chain described in Japanese Patent No. 5041532, an optical film containing a (meth) acrylic resin having a lactone ring structure described in Japanese Patent Publication No. 2009-122664, and an optical film containing a (meth) acrylic resin having a glutaric anhydride unit described in Japanese Patent Publication No. 2009-139754.

[0501] Furthermore, regarding any of the above-mentioned optical films, as an optical film containing a cyclic olefin resin, a cyclic olefin resin film described in paragraph

[0029] and thereafter of Japanese Patent Publication No. 2009-237376, a cyclic olefin resin film containing an additive for lowering Rth described in Japanese Patent Publication No. 4881827, and Japanese Patent Publication No. 2008-063536 can be utilized.

[0502] Furthermore, any of the above optical films may contain an ultraviolet absorber. As the ultraviolet absorber, a commonly used compound can be used without particular limitation.

[0503] The content of the ultraviolet absorber in the ultraviolet absorbing layer can be appropriately adjusted depending on the purpose.

[0504] 《Method for producing laminated body》

[0505] When the wavelength selective absorption filter of the present invention is provided with the above-mentioned gas barrier layer, for example, a method of directly forming the above-mentioned gas barrier layer on the wavelength selective absorption filter of the present invention produced by the above-mentioned manufacturing method can be cited. In this case, it is also preferable to perform corona treatment on the surface of the wavelength selective absorption filter of the present invention on which the gas barrier layer is provided.

[0506] Furthermore, when any of the above optical films is provided, it is also preferable to bond them together via an adhesive layer. For example, it is also preferable to bond an optical film containing a UV absorber to the wavelength selective absorption filter of the present invention after providing a gas barrier layer thereon.

[0507] <Application of the wavelength selective absorption filter of the present invention>

[0508] The wavelength selective absorption filter of the present invention can be preferably used in image display devices such as notebook personal computers, desktop personal computers, smart phones, and tablet computers.

[0509] Hereinafter, an OLED display device and a liquid crystal display device among image display devices will be described in detail.

[0510] [OLED display device]

[0511] The organic electroluminescent display device of the present invention (referred to as an organic EL (electroluminescence) display device or an OLED (Organic Light Emitting Diode) display device, and in the present invention, also simply referred to as an OLED display device) includes the wavelength selective absorption filter of the present invention.

[0512] The OLED display device of the present invention, when configured to include the wavelength selective absorption filter of the present invention as a thin film having a blue light cutoff function, can display an image having both an excellent blue light cutoff function and an excellent correlated color temperature while suppressing a decrease in relative brightness.

[0513] As the OLED display device of the present invention, as long as it includes the wavelength selective absorption filter of the present invention, as other structures, the structure of the commonly used OLED display device can be used without particular restrictions. As a structural example of the OLED display device of the present invention, there is no particular limitation, but for example, a display device that includes glass, a layer including a TFT (thin film transistor), an OLED display element, a barrier film, a color filter, glass, an adhesive layer, the wavelength selective absorption filter of the present invention, and a surface film in sequence from the opposite side relative to the external light can be cited. In addition, when the above-mentioned gas barrier layer is provided, it is provided at least in a structure such as being located closer to the external light side than the wavelength selective absorption filter of the present invention.

[0514] The above-mentioned OLED display element has a structure in which an anode electrode, a light-emitting layer and a cathode electrode are stacked in sequence. Between the anode electrode and the cathode electrode, in addition to the light-emitting layer, a Hall injection layer, a Hall transport layer, an electron transport layer and an electron injection layer are included. In addition, for example, the records in Japanese Patent Publication No. 2014-132522 can also be referred to.

[0515] Furthermore, as the color filter, in addition to a normal color filter, a color filter on which quantum dots are stacked can be used.

[0516] A resin film can also be used instead of the above-mentioned glass.

[0517] The method for forming a color image of an OLED that can be applied to the OLED display device of the present invention is not particularly limited, and any of the three-color coating method of R (red), G (green), and B (blue), the color conversion method, and the color filter method can be used, and the three-color coating method can be preferably used. Therefore, as the light source of the OLED display device of the present invention, each light-emitting layer corresponding to the above-mentioned image formation method can also be used. For example, as the light source of the OLED display device, B (Blue, 460nm), G (Green, 520nm) and R (Red, 620nm) can be used.

[0518] <Adhesive Layer>

[0519] In the OLED display device of the present invention, the wavelength selective absorption filter of the present invention is preferably bonded to glass (substrate) via an adhesive layer at the surface located on the side opposite to the external light.

[0520] The composition of the adhesive composition used in forming the adhesive layer is not particularly limited. For example, a composition containing a mass average molecular weight (M w ) is 500,000 or more. When the mass average molecular weight of the base resin is less than 500,000, bubbles or peeling may occur under at least one of high temperature and high humidity due to reduced cohesive force, and the durability reliability of the adhesive may be reduced. The upper limit of the mass average molecular weight of the base resin is not particularly limited, but if the mass average molecular weight is excessively increased, the coating property may be reduced due to increased viscosity, so it is preferably 2,000,000 or less.

[0521] The specific type of the base resin is not particularly limited, and examples thereof include acrylic resins, silicone resins, rubber resins, and EVA (ethylene vinyl acetate) resins. When applied to optical devices such as liquid crystal display devices, acrylic resins are mainly used due to their excellent transparency, oxidation resistance, and resistance to yellowing, but the present invention is not limited thereto.

[0522] Examples of the acrylic resin include polymers of a monomer mixture containing 80 to 99.8 parts by mass of a (meth)acrylate monomer and 0.02 to 20 parts by mass (preferably 0.2 to 20 parts by mass) of other crosslinking monomers.

[0523] The type of (meth)acrylate monomer is not particularly limited, and examples thereof include alkyl (meth)acrylate. If the alkyl group contained in the monomer becomes an excessively long chain, the cohesive force of the adhesive is reduced, and it is sometimes difficult to adjust the glass transition temperature (T g ) or adhesion, it is preferred to use a (meth)acrylate monomer having an alkyl group having 1 to 14 carbon atoms.

[0524] Examples of such monomers include methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, tert-butyl (meth)acrylate, sec-butyl (meth)acrylate, amyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, 2-ethylbutyl (meth)acrylate, n-octyl (meth)acrylate, isooctyl (meth)acrylate, isononyl (meth)acrylate, lauryl (meth)acrylate, isobornyl (meth)acrylate, and tetradecyl (meth)acrylate.

[0525] In the present invention, the above monomers may be used alone or in combination of two or more. With regard to the (meth)acrylate monomer, it is preferred that 80 to 99.8 parts by mass of 100 parts by mass of the monomer mixture be included. When the content of the (meth)acrylate monomer is less than 80 parts by mass, the initial adhesive force may sometimes be reduced, and when it exceeds 99.8 parts by mass, the durability may sometimes be reduced due to reduced cohesive force.

[0526] The other crosslinking monomers contained in the monomer mixture can react with the multifunctional crosslinking agent described below to impart cohesive force to the adhesive and impart crosslinking functional groups to the polymer that play a role in adjusting adhesive force and durability reliability, etc. Examples of such crosslinking monomers include hydroxyl-containing monomers, carboxyl-containing monomers, and nitrogen-containing monomers.

[0527] Examples of hydroxyl-containing monomers include 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, 6-hydroxyhexyl (meth)acrylate, 8-hydroxyoctyl (meth)acrylate, 2-hydroxyethylene glycol (meth)acrylate, or 2-hydroxypropylene glycol (meth)acrylate. Examples of carboxyl-containing monomers include acrylic acid, methacrylic acid, 2-(meth)acryloyloxyacetic acid, 3-(meth)acryloyloxypropionic acid, 4-(meth)acryloyloxybutyric acid, acrylic acid dimer, itaconic acid, maleic acid, and maleic anhydride. Examples of nitrogen-containing monomers include (meth)acrylamide, N-vinyl pyrrolidone, or N-vinyl caprolactam.

[0528] In the present invention, these crosslinking monomers may be used alone or in combination of two or more.

[0529] The other crosslinkable monomer may be contained in an amount of 0.02 to 20 parts by mass based on 100 parts by mass of the monomer mixture. If the content is less than 0.02 parts by mass, the durability reliability of the adhesive may be reduced, while if it exceeds 20 parts by mass, at least one of the adhesiveness and the releasability may be reduced.

[0530] The monomer mixture may further contain a monomer represented by the following general formula (10). Such a monomer may be added for the purpose of adjusting the glass transition temperature of the binder or imparting other functionalities.

[0531] [Chemical formula 19]

[0532]

[0533] In the formula, R1 to R3 each independently represent a hydrogen atom or an alkyl group, R4 represents a cyano group; a phenyl group which may be substituted with an alkyl group; an acetoxy group; or -C(=O)R5 (here, R5 represents an amino group or a glycidyloxy group which may be substituted with an alkyl group or an alkoxyalkyl group).

[0534] The number of carbon atoms of the alkyl group and the alkoxy group in the definition of R1 to R5 in the above formulae is independently 1 to 12, preferably 1 to 8, and more preferably 1 to 12. Specific examples thereof include methyl, ethyl, methoxy, ethoxy, propoxy and butoxy groups.

[0535] Examples of the monomer represented by the general formula (10) include nitrogen-containing monomers such as (meth)acrylonitrile, (meth)acrylamide, N-methyl(meth)acrylamide or N-butoxymethyl(meth)acrylamide; styrene-based monomers such as styrene or methylstyrene; epoxy-containing monomers such as glycidyl (meth)acrylate; or carboxylic acid vinyl esters such as vinyl acetate, etc., but the present invention is not limited to these.

[0536] The monomer represented by general formula (10) may be contained in an amount of 20 parts by mass or less based on 100 parts by mass of the total of the (meth)acrylate monomer and other crosslinking monomers. If the content exceeds 20 parts by mass, at least one of the flexibility and releasability of the adhesive may be reduced.

[0537] The method for producing a polymer using a monomer mixture is not particularly limited, and for example, it can be produced by a general polymerization method such as solution polymerization, photopolymerization, bulk polymerization, suspension polymerization or latex polymerization. In the present invention, it is particularly preferred to use a solution polymerization method, and the solution polymerization is preferably completed at a polymerization temperature of 50 to 140° C. by mixing an initiator in a state where each monomer is uniformly mixed. At this time, as the initiator used, azo-based polymerization initiators such as azobisisobutyronitrile and azobiscyclohexanecarbonitrile; and common initiators such as peroxides such as benzoyl peroxide and acetyl peroxide can be cited.

[0538] The above-mentioned adhesive composition may further include 0.1 to 10 parts by mass of a crosslinking agent relative to 100 parts by mass of the base resin. Such a crosslinking agent can impart cohesive force to the adhesive through a crosslinking reaction with the base resin. When the content of the crosslinking agent is less than 0.1 parts by mass, the cohesive force of the adhesive may sometimes decrease. In addition, if it exceeds 10 parts by mass, interlayer peeling and warping may sometimes occur, and the durability reliability may be reduced.

[0539] The type of the crosslinking agent is not particularly limited, and for example, any crosslinking agent such as an isocyanate compound, an epoxy compound, an aziridine compound, and a metal chelate compound can be used.

[0540] As isocyanate compounds, for example, toluene diisocyanate, xylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, tetramethylxylene diisocyanate and naphthalene diisocyanate, and the reaction product of any one of them and a polyol (for example, trimethylolpropane) can be mentioned; as epoxy compounds, ethylene glycol diglycidyl ether, triglycidyl ether, trimethylolpropane triglycidyl ether, N,N,N',N'-tetraglycidylethylenediamine and glycerol diglycidyl ether can be mentioned; as aziridine compounds, N,N'-toluene-2,4-bis(1-aziridinecarboxamide), N,N'-diphenylmethane-4,4'-bis(1-aziridinecarboxamide), trithamide, bisprothaloyl-1-(2-methylaziridine) and tris-1-aziridine phosphine oxide can be mentioned. Examples of the metal chelate compound include compounds in which acetylacetone, ethyl acetoacetate, and the like are coordinated to at least one polyvalent metal such as aluminum, iron, zinc, tin, titanium, antimony, magnesium, and vanadium.

[0541] The adhesive composition may further include 0.01 to 10 parts by mass of a silane coupling agent relative to 100 parts by mass of the base resin. The silane coupling agent can help improve the bonding reliability when the adhesive is placed under high temperature or high humidity conditions for a long time, and can improve the bonding stability when bonding to a glass substrate, and can improve the heat resistance and moisture resistance.

[0542] As the silane coupling agent, there can be mentioned γ-glycidyloxypropyl trimethoxysilane, γ-glycidyloxypropyl methyl diethoxysilane, γ-glycidyloxypropyl triethoxysilane, 3-mercaptopropyl trimethoxysilane, vinyl trimethoxysilane, vinyl triethoxysilane, γ-methacryloxypropyl trimethoxysilane, γ-methacryloxypropyl triethoxysilane, γ-aminopropyl triethoxysilane, 3-isocyanate propyl triethoxysilane and γ-acetoacetate propyl trimethoxysilane, etc. These silane coupling agents can be used alone or in combination of two or more.

[0543] The amount of the silane coupling agent is preferably 0.01 to 10 parts by mass, more preferably 0.05 to 1 part by mass, relative to 100 parts by mass of the base resin. When the content is less than 0.01 parts by mass, the effect of increasing the adhesive force may be insufficient, and when it exceeds 10 parts by mass, bubbles or peeling may occur, resulting in reduced durability and reliability.

[0544] The above-mentioned adhesive composition can also include an antistatic agent. As the antistatic agent, any compound can be used as long as it has excellent compatibility with other components included in the adhesive composition such as acrylic resin, does not adversely affect the transparency, operability and durability of the adhesive, and can impart antistatic properties to the adhesive. As the antistatic agent, inorganic salts or organic salts can be cited.

[0545] The inorganic salt is a salt containing an alkali metal cation or an alkaline earth metal cation as a cation component.

[0546] Examples of cations include lithium ions (Li + ), sodium ion (Na + ), potassium ion (K + ), rubidium ion (Rb + ), cesium ion (Cs + ), beryllium ion (Be 2+ ), magnesium ion (Mg 2+ ), calcium ions (Ca 2+ ), strontium ion (Sr 2+ ) and barium ions (Ba 2+ ) or more, preferably lithium ion (Li + ), sodium ion (Na + ), potassium ion (K + ), cesium ion (Cs + ), beryllium ion (Be 2+ ), magnesium ion (Mg 2+ ), calcium ions (Ca 2+ ) and barium ions (Ba 2+ The inorganic salt may be used alone or in combination of two or more. In terms of ion safety and mobility within the binder, lithium ions (Li + ).

[0547] An organic salt is a salt containing an onium cation as a cationic component. The term "onium cation" refers to a positively charged (+) ion in which at least a portion of the charge is unevenly distributed in one or more of nitrogen (N), phosphorus (P) and sulfur (S).

[0548] The onium cation may be any cation of a cyclic compound or a non-cyclic compound.

[0549] In the case of a cyclic compound, it may be any of an alicyclic compound and an aromatic compound. In addition, in the case of a cyclic compound, it may contain one or more heteroatoms (for example, oxygen atoms) other than nitrogen atoms, phosphorus atoms or sulfur atoms.

[0550] Cyclic or non-cyclic compounds may be substituted with halogen atoms, alkyl groups, aryl groups, and other substituents. In the case of non-cyclic compounds, they may be substituted with one or more, preferably four or more substituents, and the substituents may be either cyclic or non-cyclic, and the cyclic substituents may be either aromatic or alicyclic.

[0551] The onium cation is preferably a cation containing a nitrogen atom, more preferably an ammonium ion. The ammonium ion is preferably a quaternary ammonium ion or an aromatic ammonium ion.

[0552] Specifically, the quaternary ammonium ion is preferably a cation represented by the following general formula 11.

[0553] [Chemical formula 20]

[0554] Formula 11

[0555]

[0556] In the general formula 11, R6 to R9 each independently represent an alkyl group, an alkoxy group, an alkenyl group, an alkynyl group, an aryl group or a heteroaryl group.

[0557] The number of carbon atoms in the alkyl group and the alkoxy group is independently 1 to 12, preferably 1 to 8.

[0558] The number of carbon atoms in the alkenyl group and the alkynyl group is each independently 2 to 12, preferably 2 to 8.

[0559] Examples of the aryl group include a phenyl group, a biphenyl group, a naphthyl group, and an anthracenyl group.

[0560] The above-mentioned heteroaryl group may be any one of a monocyclic ring and a condensed ring, as long as it contains one or more heteroatoms selected from O, N and S as ring-constituting atoms and has 5 to 12 (preferably 5 to 6) ring members. For example, furyl, pyrrolyl, pyrrolidinyl, thienyl, pyridyl, piperidyl, indolyl, quinolyl, thiazolyl, benzothiazole and triazole.

[0561] The alkyl group, alkoxy group, alkenyl group, alkynyl group, aryl group and heteroaryl group which can be used as the above R6 to R9 may be unsubstituted or may have a substituent.

[0562] Examples of the substituent which these groups may have include a hydroxyl group, a halogen atom, an alkyl group having 1 to 12 carbon atoms, or an alkoxy group having 1 to 8 carbon atoms, and more preferably 1 to 4 carbon atoms.

[0563] As the cation represented by the general formula 11, R6 to R9 are each independently preferably an alkyl group having 1 to 12 carbon atoms, and more preferably an alkyl group having 1 to 8 carbon atoms.

[0564] As the quaternary ammonium ion represented by the general formula 11, for example, there can be mentioned N-ethyl-N,N-dimethyl-N-(2-methoxyethyl)ammonium ion, N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium ion, N-ethyl-N,N-dimethyl-N-propylammonium ion, N-methyl-N,N,N-trioctylammonium ion, N,N,N-trimethyl-N-propylammonium ion, tetrabutylammonium ion, tetramethylammonium ion, tetrahexylammonium ion and N-methyl-N,N,N-tributylammonium ion.

[0565] As the aromatic ammonium ion, for example, one or more ions of pyridinium, pyridazinium, pyrimidinium, pyrazinium, imidazolium, pyrazolium, thiazolium, oxazolium and triazolium can be cited. Preferred are N-alkylpyridinium ions substituted with an alkyl group having 4 to 16 carbon atoms, 1-alkyl-3-methylimidazolium ions substituted with an alkyl group having 2 to 10 carbon atoms, and 1,2-dimethyl-3-alkylimidazolium ions substituted with an alkyl group having 2 to 10 carbon atoms. Regarding these aromatic ammonium ions, one type may be used alone, or two or more types may be used in combination.

[0566] Furthermore, the aromatic ammonium ion is preferably a cation represented by the following general formula 12.

[0567] [Chemical formula 21]

[0568] Formula 12

[0569]

[0570] In general formula 12, R 10 ~R 15 Each independently represents a hydrogen atom, an alkyl group, an alkoxy group, an alkenyl group, an alkynyl group, an aryl group or a heteroaryl group.

[0571] Can be used as above R 10 ~R 15 The alkyl, alkoxy, alkenyl, alkynyl, aryl and heteroaryl groups have the same meanings as the alkyl, alkoxy, alkenyl, alkynyl, aryl and heteroaryl groups that can be used as R6 to R9 in the general formula 11 above.

[0572] As the cation represented by the general formula 12, R 11 ~R 15 are each independently a hydrogen atom or an alkyl group, and R 10 It is an alkyl group.

[0573] Among the examples of anions contained in the inorganic salt or organic salt containing cations in the antistatic agent, preferably fluoride (F - ), chloride (Cl - ), bromide (Br - ), iodide (I- ), perchlorate (ClO4 - ), hydroxide (OH - ), carbonate (CO3 2- ), nitrate (NO3 - )sulfonate (SO4 - ), methylbenzenesulfonate (CH3(C6H4)SO3 - ), p-toluenesulfonate (CH3C6H4SO3 - ), carboxybenzenesulfonate (COOH(C6H4)SO3 - ), trifluoromethanesulfonate (CF3SO2 - ), benzoate (C6H5COO - ), acetate (CH3COO - ), trifluoroacetate (CF3COO - ), tetrafluoroborate (BF4 - ), tetrabenzyl borate (B(C6H5)4 - ), hexafluorophosphate (PF6 - ), tris(pentafluoroethyl) trifluorophosphate (P(C2F5)3F3 - ), bis(trifluoromethanesulfonyl imide)(N(SO2CF3)2 - ), bis(pentafluoroethanesulfonyl imide) (N(SOC2F5)2 - ), bis(pentafluoroethanecarbonyl imide) (N(COC2F5)2 - ), bis(perfluorobutanesulfonyl imide) (N(SO2C4F9)2 - ), bis(perfluorobutanecarbonyl imide) (N(COC4F9)2 - ), tris(trifluoromethanesulfonyl)methyl (C(SO2CF3)3 - ) and trifluoromethane carbonyl methylate (C(SO2CF3)3 - ). However, it is not limited to these.

[0574] Among the anions, imide anions which can exhibit an electron withdrawing function and are substituted with fluorine atoms which exhibit good hydrophobicity and thus exhibit high ion stability are preferred.

[0575] From the viewpoint of improving the durability of the dye contained in the wavelength selective absorption filter of the present invention, an antistatic agent having a quaternary ammonium ion represented by General Formula 11 is particularly preferred.

[0576] The adhesive composition contains 0.01 to 5 parts by mass, preferably 0.01 to 2 parts by mass, and more preferably 0.1 to 2 parts by mass of an antistatic agent relative to 100 parts by mass of the base resin. When the content is less than 0.01 parts by mass, the target antistatic effect may not be obtained, and when the content exceeds 5 parts by mass, the compatibility with other components may be reduced, thereby deteriorating the durability reliability or transparency of the adhesive.

[0577] The above-mentioned adhesive composition can also include an antistatic agent, specifically a compound that can form a coordination bond with the cation contained in the antistatic agent (hereinafter referred to as a "coordination bonding compound"). By appropriately including the coordination bonding compound, even when a relatively small amount of antistatic agent is used, the anion concentration inside the adhesive layer can be increased to effectively impart antistatic performance.

[0578] The type of the coordination bonding compound that can be used is not particularly limited as long as it has a functional group that can coordinately bond with the antistatic agent in the molecule, and examples thereof include alkylene oxide compounds.

[0579] The alkylene oxide compound is not particularly limited, but an alkylene oxide compound having 2 or more carbon atoms, preferably 3 to 12 carbon atoms, and more preferably 3 to 8 carbon atoms in the alkylene moiety in the alkylene oxide unit as a basic unit is preferably used.

[0580] The molecular weight of the alkylene oxide compound is preferably 5,000 or less. The above-mentioned "molecular weight" refers to the molecular weight or mass average molecular weight of the compound. In the present invention, if the molecular weight of the alkylene oxide compound exceeds 5,000, the viscosity may increase excessively and the coating property may deteriorate, or the ability to form a complex with a metal may decrease. On the other hand, the lower limit of the molecular weight of the alkylene oxide compound is not particularly limited, but is preferably 500 or more, and more preferably 4,000 or more.

[0581] The alkylene oxide compound is not particularly limited as long as it exhibits the above-mentioned properties, and for example, a compound represented by the following general formula 13 can be used.

[0582] [Chemical formula 22]

[0583] Formula 13

[0584]

[0585] In the general formula 13, A represents an alkylene group having 2 or more carbon atoms, n is 1 to 120, and R 16 and R 17 Each independently represents a hydrogen atom, a hydroxyl group, an alkyl group or -C(=O)R 18 , R 18 represents a hydrogen atom or an alkyl group.

[0586] In the general formula 13, the number of carbon atoms in the alkylene group is preferably 3 to 12, and more preferably 3 to 8. Specifically, it represents an ethylene group, a propylene group, a butylene group, or a pentylene group.

[0587] In the general formula 13, the number of carbon atoms in the alkyl group is preferably 1-12, more preferably 1-8, and further preferably 1-4.

[0588] n is preferably 1-80, more preferably 1-40.

[0589] Examples of the compound represented by the general formula 13 include polyalkylene oxides, fatty acid alkyl esters of polyalkylene oxides, and carboxylic acid esters of polyalkylene oxides, but the present invention is not limited thereto.

[0590] Examples of the polyalkylene oxide include polyethylene oxide, polypropylene oxide, polybutylene oxide, and polypentane oxide.

[0591] In the present invention, in addition to the above-mentioned alkylene oxide compounds, various coordination bonding compounds such as ester compounds having one or more ether bonds disclosed in Korean Patent Publication No. 2006-0018495 or oxalate group-containing compounds, diamine group-containing compounds, polyvalent carboxyl group-containing compounds or ketone group-containing compounds disclosed in Korean Patent Publication No. 2006-0128659 can be appropriately selected and used.

[0592] The coordination bonding compound is contained in the adhesive composition in a ratio of 3 parts by mass or less, more preferably 0.1 to 3 parts by mass, and even more preferably 0.5 to 2 parts by mass, relative to 100 parts by mass of the base resin. If the content exceeds 3 parts by mass, adhesive properties such as peelability may be reduced.

[0593] In the above-mentioned adhesive composition, from the viewpoint of adjusting the adhesive performance, 1 to 100 parts by mass of an adhesive imparting resin may be further included relative to 100 parts by mass of the base resin. When the content of the adhesive imparting resin is less than 1 part by mass, the effect of addition may be insufficient, and when it exceeds 100 parts by mass, at least one of the effects of improving compatibility and cohesion may be reduced.

[0594] Such adhesiveness-imparting resin is not particularly limited, but examples thereof include hydrocarbon resins, rosin resins, rosin ester resins, terpene resins, terpene phenolic resins, polymerized rosin resins, and polymerized rosin ester resins. The hydrocarbon resins, rosin resins, rosin ester resins, terpene resins, and terpene phenolic resins may be hydrogenated.

[0595] These adhesiveness-imparting resins may be used alone or in combination of two or more.

[0596] The above-mentioned adhesive composition may also contain one or more polymerization initiators such as thermal polymerization initiators and photopolymerization initiators; epoxy resins; curing agents; ultraviolet stabilizers; antioxidants; colorants; reinforcing agents; fillers; defoaming agents; surfactants; photopolymerizable compounds such as multifunctional acrylates; and additives such as plasticizers, within the scope that will not affect the effects of the invention.

[0597] <Base Material>

[0598] In the OLED display device of the present invention, the wavelength selective absorption filter of the present invention is preferably bonded to glass (substrate) via an adhesive layer at the surface located on the side opposite to the external light.

[0599] The method for forming the above-mentioned adhesive layer is not particularly limited, and for example, the following methods can be used: a method in which the adhesive composition is applied to the wavelength selective absorption filter of the present invention using a common device such as a rod coater, and the adhesive composition is dried and cured; and a method in which the adhesive composition is first applied to the surface of a removable substrate, dried, and then the adhesive layer is transferred to the wavelength selective absorption filter of the present invention using the removable substrate, and the adhesive layer is matured and cured.

[0600] The releasable substrate is not particularly limited, and any releasable substrate can be used. For example, the release film in the above-mentioned method for producing the wavelength selective absorption filter of the present invention can be mentioned.

[0601] In addition, the conditions for coating, drying, aging, and curing can also be appropriately adjusted according to conventional methods.

[0602] [Liquid crystal display device]

[0603] The liquid crystal display device of the present invention includes the wavelength selective absorption filter of the present invention.

[0604] As described later, the wavelength selective absorption filter of the present invention may be used as at least one of a polarizing plate protective film and an adhesive layer, and may be included in a backlight unit used in a liquid crystal display device.

[0605] The liquid crystal display device preferably includes a wavelength selective absorption filter, a polarizer including a polarizer and a polarizer protective film, an adhesive layer, and a liquid crystal unit, and the polarizer is preferably bonded to the liquid crystal unit via an adhesive layer. In the liquid crystal display device, the wavelength selective absorption filter can also serve as a polarizer protective film or an adhesive layer. That is, the liquid crystal display device is divided into the following cases: a polarizer including a polarizer and a wavelength selective absorption filter (polarizer protective film), an adhesive layer, and a liquid crystal unit; and a polarizer including a polarizer and a polarizer protective film, a wavelength selective absorption filter (adhesive layer), and a liquid crystal unit.

[0606] Figure 11 is a schematic diagram showing an example of a liquid crystal display device of the present invention. Figure 1 In the embodiment, the liquid crystal display device 10 includes a liquid crystal cell having a liquid crystal layer 5, an upper electrode substrate 3 of the liquid crystal cell disposed above and below the liquid crystal cell, and a lower electrode substrate 6 of the liquid crystal cell, and an upper polarizer 1 and a lower polarizer 8 disposed on both sides of the liquid crystal cell. A color filter layer may be stacked on the upper electrode substrate 3 or the lower electrode substrate 6. A backlight is disposed on the back side of the above-mentioned liquid crystal display device 10. As a light source of the backlight, the light source described in the above-mentioned backlight unit can be used.

[0607] The upper polarizing plate 1 and the lower polarizing plate 8 each have a structure in which a polarizer is laminated with two polarizing plate protective films sandwiched therebetween. In the liquid crystal display device 10, it is preferred that at least one polarizing plate be a polarizing plate including the wavelength selective absorption filter of the present invention.

[0608] Furthermore, in the liquid crystal display device 10, the liquid crystal cell and polarizing plates (upper polarizing plate 1 and / or lower polarizing plate 8) may be bonded together via an adhesive layer (not shown). In this case, the wavelength selective absorption filter of the present invention may also serve as the adhesive layer.

[0609] The liquid crystal display device 10 includes an image direct view type, an image projection type, or a light modulation type. An active matrix liquid crystal display device using a three-terminal or two-terminal semiconductor element such as TFT, MIM (Metal-Insulator-Metal: Metal-Insulator-Metal) is effective in the present invention. Of course, a passive matrix liquid crystal display device represented by a STN mode called time-division drive is also effective.

[0610] When the wavelength selective absorption filter of the present invention is included in the backlight unit, the polarizer of the liquid crystal display device may be a general polarizer (not including the wavelength selective absorption filter of the present invention) or a polarizer including the wavelength selective absorption filter of the present invention. Furthermore, the adhesive layer may be a general adhesive layer (not including the wavelength selective absorption filter of the present invention) or an adhesive layer based on the wavelength selective absorption filter of the present invention.

[0611] In addition to preferably using the wavelength selective absorption filter of the present invention, the IPS mode liquid crystal display device described in paragraphs 0128 to 0136 of Japanese Patent Application Laid-Open No. 2010-102296 is also preferably used as the liquid crystal display device of the present invention.

[0612] <Polarizing Plate>

[0613] The polarizing plate used in the present invention comprises a polarizer and at least one polarizing plate protective film.

[0614] The polarizer used in the present invention preferably has a polarizer and polarizer protective films located on both sides of the polarizer, and preferably includes the wavelength selective absorption filter of the present invention as the polarizer protective film on at least one side. A general polarizer protective film may be provided on the side of the polarizer opposite to the side having the wavelength selective absorption filter of the present invention (polarizer protective film of the present invention).

[0615] The film thickness of the polarizer protective film is 5 μm or more and 120 μm or less, more preferably 10 μm or more and 100 μm or less. The film is not easy to produce uneven display after high temperature and high humidity for a long time when assembled into a liquid crystal display device, so it is preferred. On the other hand, if it is too thin, it is difficult to stably transmit when manufacturing the film and making the polarizer. In the case where the wavelength selective absorption filter of the present invention also serves as a polarizer protective film, the thickness of the wavelength selective absorption filter preferably satisfies the above range.

[0616] -Polarizer Performance-

[0617] The polarization degree of the polarizing plate used in the present invention is preferably 99.950% or more, more preferably 99.970%, and most preferably 99.990% or more.

[0618] In the present invention, the polarization degree of the polarizing plate is calculated by the following formula from the orthogonal transmittance and parallel transmittance measured at a wavelength of 380 to 700 nm using an automatic polarizing film measuring apparatus: VAP-7070 (manufactured by JASCO Corporation).

[0619] Polarization degree (%) = [(parallel transmittance - orthogonal transmittance) / (orthogonal transmittance + parallel transmittance)] 1 / 2 ×100

[0620] The polarization degree can be measured in the following manner. Prepare two samples (5 cm × 5 cm) with polarizers attached to glass via an adhesive. For the orthogonal transmittance and parallel transmittance measurements, set the glass side of the sample toward the light source and measure. Measure the two samples, and take their average values ​​as the orthogonal transmittance and parallel transmittance, respectively. When studying the effect of a polarizer protective film on the polarization degree, the polarizer protective film to be evaluated is usually configured and attached to the glass side.

[0621] Other preferred optical properties and the like of the polarizing plate used in the present invention are described in

[0238] to

[0255] of JP-A-2007-086748, and it is preferred that these properties are satisfied.

[0622] -Shape, structure-

[0623] The shape of the polarizer used in the present invention includes not only polarizers cut into thin films of a size that can be directly assembled into a liquid crystal display device, but also polarizers made into long strips and rolled into rolls by continuous production (for example, a roll length of 2500m or more or 3900m or more). In order to be used in a large-screen liquid crystal display device, the width of the polarizer is preferably set to 1470mm or more.

[0624] The polarizing plate used in the present invention is composed of a polarizer and at least one polarizing plate protective film, but is preferably further composed of a separator film bonded to one surface of the polarizing plate.

[0625] The separator film is used to protect the polarizer when the polarizer is shipped, during product inspection, etc. The separator film is used to cover the adhesive layer to be bonded to the liquid crystal panel and is used to bond the polarizer to the surface side of the liquid crystal panel.

[0626] (Polarizer)

[0627] The polarizer used for the polarizing plate of the present invention will be described.

[0628] The polarizer that can be used in the polarizing plate of the present invention is preferably composed of polyvinyl alcohol (PVA) and dichroic molecules, but a polyvinylene-based polarizer obtained by dehydrating and dechlorinating PVA and polyvinyl chloride to generate a polyene structure and orienting it as described in Japanese Patent Publication No. 11-248937 can also be used.

[0629] -Thickness of polarizer film-

[0630] The film thickness of the polarizer before stretching is not particularly limited, but from the viewpoint of maintaining the stability of the film and the uniformity of stretching, it is preferably 1 μm to 1 mm, and particularly preferably 5 to 200 μm. In addition, a thin PVA film such that the stress generated when stretched 4 to 6 times in water is less than 10 N can be used as described in Japanese Patent Application Laid-Open No. 2002-236212.

[0631] -Method for manufacturing polarizer-

[0632] As the manufacturing method of polarizer, there is no particular restriction, but for example, it is preferred that the above-mentioned PVA is filmized and then dichroic molecules are introduced to form the polarizer. The manufacture of the PVA film can be carried out with reference to the method described in

[0213] to

[0237] of Japanese Patent Publication No. 2007-86748, Japanese Patent Specification No. 3342516, Japanese Patent Publication No. 09-328593, Japanese Patent Publication No. 2001-302817, Japanese Patent Publication No. 2002-144401, etc.

[0633] (Lamination method of polarizer and polarizing plate protective film)

[0634] The polarizing plate used in the present invention is produced by bonding (laminating) at least one polarizing plate protective film (preferably the wavelength selective absorption filter of the present invention) to at least one surface of the above-mentioned polarizer.

[0635] It is preferably produced by subjecting a polarizing plate protective film to alkali treatment and bonding it to both sides of a polarizer produced by immersing and stretching a polyvinyl alcohol film in an iodine solution using a completely saponified polyvinyl alcohol aqueous solution.

[0636] Examples of the adhesive for bonding the treated surface of the polarizing plate protective film to the polarizer include polyvinyl alcohol-based adhesives such as polyvinyl alcohol and polyvinyl butyral, and vinyl latex such as butyl acrylate.

[0637] In the polarizing plate used in the present invention, the polarizing plate protective film and the polarizer are preferably laminated so that the transmission axis of the polarizer and the slow axis of the polarizing plate protective film are substantially parallel, orthogonal, or at 45°.

[0638] The slow axis can be measured by various known methods, and can be measured, for example, using a birefringence meter (KOBRADH, manufactured by Oji Scientific Instruments Co., Ltd.).

[0639] Here, substantially parallel means that the direction of the main refractive index nx of the polarizer protective film crosses with the direction of the transmission axis of the polarizer with a deviation within ±5°, preferably within ±1°, and more preferably within ±0.5°. If the angle of intersection is within 1°, the polarization performance of the polarizer under the orthogonal Nicols is not easy to decrease, and light leakage is not easy to occur, so it is preferred.

[0640] The direction of the principal refractive index nx is orthogonal to or at 45° to the direction of the transmission axis, which means that the angle at which the direction of the principal refractive index nx intersects the direction of the transmission axis is within the strict angle range of ±5° related to orthogonality and 45°, and the error from the strict angle is preferably within the range of ±1°, and more preferably within the range of ±0.5°.

[0641] (Functionalization of polarizers)

[0642] The polaroid used in the present invention can also be preferably used as a functionalized polaroid composited with an optical film having functional layers such as an anti-reflection film, a brightness enhancement film, a hard coating, a forward scattering layer, an anti-glare (anti-glare) layer, an antifouling layer, and an antistatic layer for improving the visual recognition of a display. The anti-reflection film, the brightness enhancement film, other functional optical films, the hard coating, the forward scattering layer, and the anti-glare layer used for functionalization are recorded in

[0257] to

[0276] of Japanese Patent Publication No. 2007-86748, and the functionalized polaroid can be made according to these records.

[0643] <Adhesive Layer>

[0644] In the liquid crystal display device of the present invention, the polarizer is preferably bonded to the liquid crystal unit via an adhesive layer. The wavelength selective absorption filter of the present invention may also serve as the above-mentioned adhesive layer. When the wavelength selective absorption filter of the present invention does not also serve as an adhesive layer, a general adhesive layer can be used as the adhesive layer.

[0645] The adhesive layer is not particularly limited as long as it can bond the polarizing plate and the liquid crystal cell together, but for example, acrylic, urethane, polyisobutylene, and the like are preferred.

[0646] When the wavelength selective absorption filter of the present invention also serves as an adhesive layer, the adhesive layer contains the above-mentioned dye and the above-mentioned binder resin, and further contains a crosslinking agent, a coupling agent, etc. to impart adhesiveness.

[0647] When the wavelength selective absorption filter also serves as the adhesive layer, the adhesive layer preferably contains 90 to 100% by mass of the binder resin, and more preferably 95 to 100% by mass. The content of the pigment is as described above.

[0648] The thickness of the adhesive layer is not particularly limited, but is, for example, preferably 1 to 50 μm, more preferably 3 to 30 μm.

[0649] <Liquid Crystal Unit>

[0650] The liquid crystal cell is not particularly limited, and a general liquid crystal cell can be used.

[0651] Example

[0652] Below, the present invention is further described in detail according to embodiment. About the material, dosage, ratio, processing content, processing sequence etc. shown in the following embodiment, as long as do not depart from the gist of the present invention, then can be appropriately changed.Therefore, the scope of the present invention is not limited to the embodiment shown below.

[0653] In the following examples, "parts" and "%" indicating compositions are by mass unless otherwise specified.

[0654] Furthermore, all the steps from the preparation of the wavelength selective absorption filter forming liquid to the production of the wavelength selective absorption filter with a substrate using the wavelength selective absorption filter forming liquid and the steps until the light resistance test were performed under yellow light to avoid exposure to ultraviolet rays.

[0655] [Fabrication of wavelength selective absorption filter]

[0656] Materials used to make the wavelength selective absorption filter are shown below.

[0657] <Matrix resin>

[0658] (Resin 1)

[0659] As Resin 1, a polystyrene resin (SGP-10 (trade name), Tg 100° C., fd 0.56, manufactured by PS Japan Corporation, PSJ-polystyrene GPPS) was heated at 110° C. and naturally cooled to room temperature (23° C.).

[0660] (Resin 2)

[0661] Polyphenylene ether resin (manufactured by Asahi Kasei Corporation, ZYLON S201A (trade name), poly(2,6-dimethyl-1,4-phenylene ether), Tg 210°C)

[0662] (Releasability Controlling Resin Component 1)

[0663] BYRON550 (trade name, manufactured by TOYOBO CO., LTD., polyester additive)

[0664] <Dye A>

[0665] Pigment represented by general formula (A1)

[0666] [Chemical formula 23]

[0667]

[0668] The following dyes used in the examples of Japanese Patent Application Laid-Open No. 2017-142412

[0669] [Chemical formula 24]

[0670]

[0671] The following dyes used in the examples of International Publication No. 2014 / 2087149

[0672] [Chemical formula 25]

[0673]

[0674] <Dye D>

[0675] BASF Corporation, Lumogen IR788 (trade name)

[0676] <Other dyes>

[0677] [Chemical formula 26]

[0678]

[0679] <Additives>

[0680] (Anti-fading agent 1)

[0681] Exemplary compound IV-8 among the above anti-fading agents

[0682] [Chemical formula 27]

[0683]

[0684] (Leveling agent 1)

[0685] A polymer surfactant composed of the following components was used as the 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.

[0686] [Chemical formula 28]

[0687]

[0688] (Substrate 1)

[0689] A polyethylene terephthalate film Lumirror XD-510P (trade name, film thickness: 50 μm, manufactured by TORAY INDUSTRIES, INC.) was used as the substrate 1 .

[0690] Example

[0691] <Production of Wavelength Selective Absorption Filter No. 101 with Substrate>

[0692] (1) Preparation of wavelength selective absorption filter forming liquid

[0693] The components were mixed in the following composition to prepare a wavelength selective absorption filter forming liquid (composition) No. 101.

[0694]

[0695]

[0696] Next, the obtained wavelength selective absorption filter forming liquid No. 101 was filtered using filter paper with an absolute filtration accuracy of 10 μm (#63, manufactured by TOYO ROSHI KAISHA, Ltd.), and further filtered using a metal sintered filter with an absolute filtration accuracy of 2.5 μm (product name: PALL Filter PMF, media code: FH025, manufactured by NIHON PALL LTD.).

[0697] (2) Fabrication of wavelength selective absorption filter with substrate

[0698] The wavelength selective absorption filter forming liquid No. 101 after the filtration treatment was applied to the substrate 1 using a bar coater so that the film thickness after drying was 2.5 μm, and dried at 120° C. to prepare a wavelength selective absorption filter No. 101 with a substrate.

[0699] <Production of Wavelength Selective Absorption Filters No. 102 to 103, R01, and C11 to C18 with Substrate>

[0700] Wavelength selective absorption filters Nos. 102 to 103, r01, and c11 to c18 were produced in the same manner as in the production of wavelength selective absorption filter No. 101 with a substrate, except that the type and compounding amount of the dye were changed to those described in Table 2.

[0701] Here, No. 101 to 103 are wavelength selective absorption filters of the present invention, No. c11 to c18 are wavelength selective absorption filters for comparison, and No. r01 is a control filter containing no dye.

[0702] These wavelength selective absorption filters No. 101 to 103, c11 to c14, and c17 adjusted the amount of dye A so that the value of Toxic Blue described later became 48.6% to 48.8%. In addition, regarding the addition of dye D, the amount of dye D was adjusted so that the correlated color temperature became 5900K to 6000K. Thus, the difference in relative brightness can be discussed. In addition, as described later, in the wavelength selective absorption filters No. c15 and 16, Toxic Blue could not be adjusted to the desired level.

[0703] Furthermore, the wavelength selective absorption filter No. c18 used for comparison is a filter whose light transmission characteristics are adjusted in a manner between the light transmission characteristics of the thin film 274 and the light transmission characteristics of the thin film 276 described in Table 3 of paragraph 0077 of Japanese Patent Application Publication No. 2017-116951. Specifically, in the wavelength selective absorption filter No. c18, the "energy remaining after applying the thin film" described in Table 3 of Japanese Patent Application Publication No. 2017-116951 shows the value shown in the following table. In addition, in the following table, UV is the abbreviation of Ultraviolet, and HEV is the abbreviation of High energy visible.

[0704] [Table 1]

[0705] Wavelength (nm) Remaining energy after applying filter No.c18 UV 380～400 1％ HEV Blue 415～455 77％ All blue 400～500 68％ blue 500～520 71％ green 520～565 73％ yellow 565～580 73％ orange color 580～625 65％ red 625～740 52％

[0706] [evaluate]

[0707] The wavelength selective absorption filter with substrate produced above was evaluated as follows. The results are collectively shown in Table 2.

[0708] <Absorption Maximum of Wavelength Selective Absorption Filter>

[0709] The absorbance of the wavelength selective absorption filter with substrate in the wavelength range of 380 nm to 800 nm was measured at every 1 nm using UV3150 spectrophotometer (trade name) manufactured by SHIMADZU CORPORATION. x The absorbance Ab(λ) of the wavelength selective absorption filter was calculated by the following formula:

[0710] Ab(λ)=Ab x (λ)-Ab0(λ)

[0711] Hereinafter, the wavelength showing the maximum absorbance Ab(λ) of the wavelength selective absorption filter in the wavelength region of 380 to 800 nm is defined as the maximum absorption wavelength (hereinafter also referred to as “λ”). max ”), the λ max The absorbance at the point is set as the absorption maximum (hereinafter also referred to as "Ab(λ max )”.).

[0712] <Simulation test of color gamut, relative brightness, correlated color temperature and blue light cutoff function>

[0713] A simulation test was conducted on a liquid crystal display device equipped with a wavelength selective absorption filter, and the color gamut, relative brightness, correlated color temperature and blue light cutoff were calculated.

[0714] [Fabrication of Liquid Crystal Display Device and Measurement of Emission Spectrum]

[0715] In a commercially available liquid crystal display device (manufactured by BenQ, trade name: SW2700PT), the polarizing plate and the phase difference film on the visual identifier side were peeled off from the liquid crystal unit as a whole, and on the phase difference film side, an acrylic adhesive was used to bond a wavelength selective absorption filter with a substrate so that the wavelength selective absorption filter surface became the adhesive side, and then the substrate was peeled off. In this way, a laminated body in which the polarizing plate, the phase difference film, and the wavelength selective absorption filter were bonded in sequence was produced. For this laminated body, the surface on the wavelength selective absorption filter side was bonded to the liquid crystal unit in the above-mentioned liquid crystal display device using an acrylic adhesive, and a liquid crystal display device having a wavelength selective absorption filter (hereinafter also referred to as a "liquid crystal display device") was produced.

[0716] The liquid crystal display device displayed white, red, green, and blue colors on the entire screen, and the brightness of white display and the chromaticity of red, green, and blue were measured using a spectroradiometer (manufactured by TOPCON TECHNOHOUSE CORPORATION, trade name: SR-UL2).

[0717] (1) Color gamut

[0718] The area of ​​the overlapping portion between a triangle created by connecting the measured red, green, and blue chromaticity points on the xy chromaticity diagram in the xyY colorimetric system of CIE (International Commission on Illumination) 1931 and a triangle created by connecting the three primary color points of the DCI-P3 standard (a standard advocated by Digital Cinema Initiatives) is calculated, and the area of ​​the overlapping portion is divided by the area of ​​the triangle created by connecting the three primary color points of the DCI-P3 standard to calculate the coverage relative to the DCI-P3 standard (hereinafter referred to as "DCI-P3 coverage").

[0719] In the present invention, the color gamut is preferably 83% or more.

[0720] In addition, the three primary color points of the DCI-P3 standard are as follows.

[0721] Red: x=0.680, y=0.320

[0722] Green: x=0.265, y=0.690

[0723] Blue: x=0.150, y=0.060

[0724] (2) Relative brightness

[0725] The relative brightness of the white display measured when the wavelength selective absorption filter was used to the brightness of the white display measured when a control filter containing no dye (ie, wavelength selective absorption filter No. r01) was used was calculated.

[0726] In the present invention, a relative brightness of 82% or more is considered an acceptable level.

[0727] (3) Correlated color temperature

[0728] The correlated color temperature is calculated using the chromaticity of white light by calculation software disclosed on the following homepage.

[0729] http: / / n-colorspace.cool.coocan.jp / s-download.html

[0730] In the present invention, the correlated color temperature is 5900K to 6400K, which is an acceptable level.

[0731] (4) Blue light cutoff

[0732] The blue light cutoff function was evaluated based on the following indicators.

[0733] In the present invention, regarding the blue light cutoff function, a Blue Power of less than 20% and a Toxic Blue of less than 50% are considered acceptable levels.

[0734] [Blue Power (%)] = (the integrated value of the intensity of light in the wavelength range of ±20 nm relative to the wavelength that gives the maximum value in the blue wavelength region) / (the integrated value of the intensity of light at wavelengths of 380 to 780 nm) × 100

[0735] [Toxic Blue (%)] = (the integrated value of the intensity of light at a wavelength of 415 to 455 nm) / (the integrated value of the intensity of light at a wavelength of 400 to 500 nm) × 100

[0736] In addition, regarding the Ratio Blue to Green Ratio described below, both the Examples and Comparative Examples were less than 200%, and satisfied the standard, and were at a pass level.

[0737] [Ratio Blue to Green Ratio (%)] = (absorption maximum value in the blue wavelength region) / (maximum value of absorption maximum of colors other than the blue wavelength region) × 100

[0738] <Evaluation of light resistance>

[0739] For the wavelength selective absorption filter with substrate, a super xenon lamp weathering tester SX75 (trade name, light source: 7.5 kW water-cooled xenon lamp, irradiation illumination: 150 W / m) manufactured by Suga Test Instruments Co., Ltd. was used. 2 The light was irradiated for 200 hours at 60°C and 50% relative humidity (ultraviolet rays 300 to 400 nm). The maximum absorption values ​​before and after the light irradiation were measured, and the light resistance was calculated by the following formula.

[0740] [Light resistance (%)] = ([absorption maximum value after 200 hours of light irradiation] / [absorption maximum value before light irradiation]) × 100

[0741] The light resistance test is equivalent to an accelerated test, so as a practical level, there is no problem as long as the light resistance is 10% or more. In the present invention, it is preferably 70% or more.

[0742]

[0743] (Notes to table)

[0744] The content of the dye refers to the content ratio of the dye in the wavelength selective absorption filter under the quality standard.

[0745] The mark "-" in the dye column indicates that no dye is present.

[0746] λ in Dye A and Dye D max These are wavelengths derived from dye A or dye D and showing the maximum absorbance Ab(λ) among the maximum absorption wavelengths that the wavelength selective absorption filter has in the wavelength region of 380 to 800 nm.

[0747] Ab(λ max ) refers to the maximum absorption wavelength λ max The absorbance value at .

[0748] Ab(450) / Ab(430) refers to the ratio of the absorbance value at a wavelength of 450 nm to the absorbance value at a wavelength of 430 nm.

[0749] The wavelength selective absorption filter No. c18 contains 2.7% of solvent red 111 and 2.9% of solvent green 3 in addition to dye A and dye D. The definition of the content of these dyes is the same as the definition of the content of the above-mentioned dyes.

[0750] The mark "-" in the light fastness evaluation column indicates that the dye is not contained.

[0751] “DCI-P3” refers to DCI-P3 coverage.

[0752] The following can be learned from Table 2.

[0753] In the wavelength selective absorption filters No. c15 and c16 of the comparative examples, the value of Ab(450) / Ab(430) is 0.02, which is outside the range specified in the present invention, and does not contain dye D. In the wavelength selective absorption filters No. c15 and c16 of the comparative examples, Blue Power exceeds 20%, and Toxic Blue exceeds 50%. As described above, if the value of Ab(450) / Ab(430) is less than 0.05, the blue light cutoff property is limited, and even if the content of dye A is adjusted, Blue Power and Toxic Blue cannot be suppressed to the desired level.

[0754] Furthermore, in the wavelength selective absorption filter No. c14 of the comparative example, the value of Ab(450) / Ab(430) is 1.01 and is outside the range specified in the present invention, and the dye D is not contained. The wavelength selective absorption filter No. c14 of the comparative example can set the blue light cutoff property to a desired level, but the correlated color temperature is as low as 4766K, and it is impossible to achieve both an excellent blue light cutoff function and suppression of a decrease in correlated color temperature by adding a dye.

[0755] In the wavelength selective absorption filters No.c11 to c13 of the comparative examples, although the value of Ab(450) / Ab(430) is within the range specified in the present invention, the dye D is not contained. The wavelength selective absorption filters No.c11 to c13 of the comparative examples can set the blue light cutoff property to a desired level similarly to No.c14. However, compared with No.c14, although the decrease in correlated color temperature can be suppressed, the correlated color temperature is still low, and it is not possible to achieve both an excellent blue light cutoff function and the suppression of the decrease in correlated color temperature by adding a dye.

[0756] In the wavelength selective absorption filter No. c17 of the comparative example, the value of Ab(450) / Ab(430) was 1.01 and was outside the range specified in the present invention, and on the other hand, the dye D was contained. The wavelength selective absorption filter No. c17 of the comparative example was able to set the blue light cutoff property to a desired level and suppress the decrease in correlated color temperature by containing the dye D. However, the relative brightness was reduced to 81.1%, and it was not possible to achieve both an excellent blue light cutoff function and an excellent correlated color temperature while suppressing the decrease in relative brightness.

[0757] Furthermore, the wavelength selective absorption filter No. c18 of the comparative example has the characteristics of the range of the thin films 274 and 276 described in Japanese Patent Publication No. 2017-116951 (the energy remaining after the thin film is applied), and the value of Ab(450) / Ab(430) is 0.02 and is outside the range specified in the present invention. The wavelength selective absorption layer filter No. c18 of the comparative example is similar to No. c15 and c16, and the blue light cutoff function specified in the present invention is insufficient. In addition, the relative brightness is known to be 68.2% and cannot be suppressed from decreasing, and the correlated color temperature is also too high.

[0758] In contrast, it is known that the wavelength selective absorption filters No. 101 to 103 of the present invention can achieve all of the suppression of relative brightness reduction, excellent blue light cutoff function, and excellent correlated color temperature. In addition, it is known that No. 101 and 102 containing the pigment represented by the general formula (A1) as dye A also have excellent light resistance.

[0759] The present invention has been described together with its embodiments, but unless otherwise indicated, we do not intend our invention to be limited to any of the details described and should be broadly construed without departing from the spirit and scope of the invention as set forth in the appended claims.

[0760] This application claims priority based on Japanese Patent Application No. 2020-029393 filed in Japan on February 25, 2020, the contents of which are incorporated herein by reference as part of the description of this specification.

[0761] Explanation of symbols

[0762] 1-upper polarizer, 2-direction of absorption axis of upper polarizer, 3-upper electrode substrate of liquid crystal unit, 4-orientation control direction of upper substrate, 5-liquid crystal layer, 6-lower electrode substrate of liquid crystal unit, 7-orientation 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 wavelength selective absorption filter comprising a resin and the following dye A and dye D having main absorption wavelength bands in different wavelength regions, wherein the absorbance Ab(λ) of the wavelength selective absorption filter at a wavelength λ nm satisfies the following relational formula (I), Dye A: a dye having a main absorption wavelength band at a wavelength of 400 to 430 nm in a wavelength selective absorption filter; Dye D: a dye having a main absorption wavelength band at a wavelength of 640 to 730 nm in a wavelength selective absorption filter; Relationship (I) 0.05 ≤ Ab (450) / Ab (430) < 1.00 The dye A is a pigment represented by the following general formula (A1) or the following compound example 5, In the above formula, R 1 and R 2 Each independently represents an alkyl group having 1 to 12 carbon atoms or an aryl group having 6 to 12 carbon atoms, and R 3 , R 5 , R 6 Each independently represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or an aryl group having 6 to 10 carbon atoms, and R 4 represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and R 5 With R 6 Can bond to each other to form a 6-membered ring, The dye D is a squarylium dye represented by the general formula (14), Lumogen IR788 manufactured by BASF, or Lumogen IR765 manufactured by BASF. In the general formula (14), R 1 , R 2 , R 41 and R 42 are alkyl or aryl, B 1 ~B 4 All carbon atoms, B 1 ~B 4 The carbon atom of may have an amino group or a hydroxyl group as a substituent, B 5 ~B 8 Respectively with B 1 ~B 4 Same meaning.

2. A polarizing plate comprising the wavelength selective absorption filter according to claim 1.

3. An organic electroluminescent display device or a liquid crystal display device, comprising the wavelength selective absorption filter according to claim 1.

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