JP2003167119A - Filter for display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a band pass filter for a display having excellent heat resistance and light resistance. <P>SOLUTION: The filter for a display having a layer containing an acrylic resin and a dyestuff is characterized in that the acrylic resin consists principally of a resin having ≥110°C glass transition point (Tg). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display filter having a layer containing a specific acrylic resin and a dye, and more specifically, it is stable for a long time and does not weaken the emission intensity of the display. The present invention relates to a display filter capable of adjusting color tone, or increasing color purity of emitted light and color temperature.

[0002]

2. Description of the Related Art Conventionally, as a color image display device, a cathode ray tube, a fluorescent display tube, a field emission, a plasma panel,
Various image display devices using liquid crystal, electroluminescence, etc. have been developed. These have a format of displaying an image by using a combination of three primary colors of red, green and blue. At that time, the emission of light other than the above three primary colors is absorbed by a so-called bandpass filter to obtain a clear image. It is necessary to obtain a proper color image and correct the color balance of the image.
Examples of the bandpass filter include, for example, Japanese Patent Laid-Open No. 61
In Japanese Patent Laid-Open No. 188501, Japanese Patent Laid-Open No. 10-26704, Japanese Patent Laid-Open No. 2000-43175, etc., color adjustment filters used for plasma display panels and fluorescent display tubes are disclosed. As described above, various studies have been made on the use of dyes, but in this case, there is no absorption other than the intended absorption, and heat resistance and light resistance of the dyes are important factors.

In particular, plasma display panels (hereinafter,
(Also referred to as PDP), a plasma display panel filter is provided on the screen in order to mainly adjust the color tone of the screen and also to block ultraviolet rays and infrared rays emitted from the screen. In particular, since plasma emission emits so-called neon orange light centered around 590 nm when the neon atom returns to the ground state after being excited, plasma display has a drawback that orange is mixed with red and vivid red cannot be obtained. It is necessary to effectively cut this neon orange light, and the inventors of the present invention have already disclosed Japanese Patent Application No. 11-296832, 1) regarding a filter for cutting the orange light.
A patent application has been filed for example in No. 1-306563.

Further, the screen surface of the PDP is constantly exposed to a high temperature of about 60 ° C. due to heat radiation due to plasma discharge, and it has been desired to develop a filter for a plasma display panel, which has excellent heat resistance for a long period of time. In this respect, a filter with sufficient performance has not been realized. In addition, the filter for a plasma display panel containing a dye has a drawback that the dye is easily deteriorated by receiving visible light or ultraviolet rays from external light, and a filter having stable light resistance for a long period of time is also desired.

Conventionally, in the above-mentioned display filter preparation, it has been known that a pigment layer is prepared by using a polyester resin, a polycarbonate resin or the like as a binder resin (Japanese Patent Laid-Open No. 10-2043).
No. 04, etc.), a filter sufficiently satisfying these performances has not been obtained.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a color adjusting filter, which does not affect the emission of the three primary colors of red, blue and green, and which has good durability such as heat resistance and light resistance. It is to provide a purity improving filter, a color reproduction range expanding filter, and the like.

[0007]

Means for Solving the Problems The inventors of the present invention have conducted various studies and, as a binder resin used for forming a dye layer in the production of the above bandpass filter, a specific acrylic resin having a high glass transition point. It has been found that by using a resin, the above object can be achieved by combining with a binder resin, particularly when a dye having a specific skeleton is used.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is described in detail below.
The present invention is an invention having the following contents. 1. A filter for a display having a layer containing an acrylic resin and a dye, wherein the acrylic resin is mainly composed of a resin having a glass transition point (Tg) of 110 ° C or higher. Filter for.

2. A filter for a display having a layer containing an acrylic resin and a dye, wherein the acrylic resin has the following general formula (I):

[0010]

[Chemical 6]

(In the formula (I), R ₁ represents a hydrogen atom or an alkyl group, and R ₂ represents a polycyclic alicyclic ring), which is a resin containing a structural unit. And a display filter. 3. The dye has the following general formula (II)

[0012]

[Chemical 7]

[In the formula (II), A and B are each independently an aryl group which may have a substituent, a heterocyclic group which may have a substituent, or CH═D ( However, D
Represents a heterocyclic group which may have a substituent. ) Represents. ] It is a squarylium-type compound represented by these, The filter for displays of said 1 or 2 characterized by the above-mentioned.

4. The squarylium compound is represented by the following general formula (III)

[0015]

[Chemical 8]

[In the formula (III), R ₃ and R ₄ are a halogen atom, an alkyl group which may have a substituent, an alkoxy group which may have a substituent, or —NH—X—R ₄ (X
Represents CO or SO ₂ , and R ₅ represents an organic residue. ) Represents the case where R ₃ is more present, each R ₃ may be the same or different. m represents an integer of 1 to 4 and n represents an integer of 0 to 4. ] It is a squarylium type compound represented by these, The filter for displays of said 3 characterized by the above-mentioned.

5. The display filter according to the above 3, wherein the squarylium compound is a pyrazole group in which A and B in the general formula (II) may have a substituent. 6. The dye has the following general formula (IV)

[0018]

[Chemical 9]

(In the formula, M is Ni, Pd, Pt, Co, F
represents e, Ti, Sn or Cu. Y ₁ ~ Y₈ Is it
Each independently has a hydrogen atom or an alkyl which may have a substituent.
Group, an aryl group which may have a substituent, and a substituent
An aralkyl group which may have or a substituent which may have
Good alkoxy, aryloxy, nitro, halo
Represents a gen atom, amino group, substituted amino group or cyano group
I, X₁ ~ X_TenAre each independently a hydrogen atom, halo
Gen atom, alkoxy group, aryloxy group, nitro
Group, cyano group, optionally substituted alkyl group, substituted
Having an aryl group or a substituent which may have a group
Represents an aralkyl group which may be present. ) Metal complex represented by
6. The method according to any one of 1 to 5 above, wherein
Display filter. 7. The dye has the following general formula (V)

[0020]

[Chemical 10]

[In the formula (V), G ^{1 to} G ⁸ are each independently
Hydrogen atom, halogen atom, nitro group, cyano group, hydroxy group, amino group, optionally substituted alkyl group, optionally substituted alkoxy group, optionally substituted group Good aryl group, optionally substituted aryloxy group, optionally substituted alkylamino group, optionally substituted dialkylamino group, optionally substituted Represents an optionally substituted alkylthio group or an arylthio group which may have a substituent, and G ¹ and G ² , G ³ and G ⁴ , G ⁵ and G ⁶ , and G ⁷ and G ⁸ are linked to each other. An aliphatic carbocycle may be formed. M ′ represents two hydrogen atoms, a divalent metal atom, a trivalent monosubstituted metal atom, a tetravalent disubstituted metal atom or an oxy metal atom. ] It is a tetraazaporphyrin type compound represented by these, The filter for displays in any one of said 1-6 characterized by the above-mentioned.

8. A display filter, wherein the display filter according to any one of 1 to 7 above is further laminated with a layer containing an ultraviolet absorber. 9. 9. A filter for a phosphor-emission type display panel, comprising the display filter according to any one of 1 to 8 above. Ten. A filter for a plasma display panel comprising the display filter according to any one of 1 to 8 above.

The present invention will be described in detail below. In the present invention, the acrylic resin has a glass transition point (Tg) of 1
A characteristic is that a resin mainly having a temperature of 10 ° C. or higher is used, and the acrylic resin used for the dye-containing layer of the display filter of the present invention has a glass transition point (Tg) of 110 ° C. as described above. The above is usually 50
The content is preferably not less than 80% by weight, more preferably not less than 90% by weight, particularly preferably not less than 95% by weight. The glass transition point is preferably 20
It is preferably 0 ° C. or lower. The filter of the present invention is
By mainly using an acrylic resin having a high glass transition point (Tg), it is stable against deterioration due to ultraviolet light and deterioration due to heat for a long period of time. Therefore, an excellent plasma display panel filter, CRT filter, It can be used as a bandpass filter for various image display devices such as liquid crystal, electroluminescence, and the like, as well as filters for phosphor light emitting display panels such as filters for fluorescent display tubes and filters for field emission displays.

As such an acrylic resin, for example, the following general formula (I) is used.

[0025]

[Chemical 11]

An acrylic resin containing a structural unit represented by the formula (I), R ₁ represents a hydrogen atom or an alkyl group, and R ₂ represents a polycyclic alicyclic ring is used. . As the alkyl group of the substituent R ₁ of the acrylic resin,
Examples thereof include a methyl group having 1 to 4 carbon atoms, an ethyl group, and an n-propyl group, and the methyl group is most preferable. Examples of the polycyclic alicyclic group for the substituent R ₂ include 2
It is an alicyclic group having a ring or more, and examples thereof include a norbornene ring, a bicyclooctane ring, a tricyclodecane ring, and an adamantane ring.

Typical examples of the acrylic resin include acrylic resins having the following structural units (I-1) to (I-4). Above all, the structural unit (I-2)
Is preferred.

[0028]

[Chemical 12]

In the acrylic resin used in the present invention, two or more kinds of the above structural units may be copolymerized, and the above structural units may further be represented by the following general formula (V).

[0030]

[Chemical 13]

(In the formula (V), R ₅ represents a hydrogen atom or an alkyl group, and R ₆ represents an organic residue), which is an acrylic resin resin copolymerized with a structural unit represented by However, in that case, 30% or more of the structural unit is preferably the structural unit (I), and preferably 40 to 100%.
Is desirable. Substituent R _{5 of the} acrylic resin
Examples of the alkyl group include a methyl group, an ethyl group, an n-propyl group, and the like, and as the organic residue of the substituent R ₆ ,
An alkyl group such as a methyl group, an ethyl group, and an n-propyl group,
Examples thereof include cyclohexyl groups, cyclohexyl groups and other cyclohexyl groups, benzyl groups and other aralkyl groups, methoxyethyl groups, methoxyethoxyethyl groups, tetrahydrofurfuryl groups, phenoxyethyl groups, and other ether group-containing groups.

Among the above structural units, the acrylic resin resin obtained by copolymerizing the above formula (I) and the general formula (V) has a high glass transition point (Tg) and a good solubility in a solvent. there for film of, or preferably during the coating, among others, the formulas (I-2) and general formula _{(V), R 5 = CH} 3, R 6 = -CH 3 because of structural units represented by (V- An acrylic resin resin copolymerized with 1) is preferable. As this acrylic resin, Optrez OZ-
The 1000 series (manufactured by Hitachi Chemical Co., Ltd.) and the like can be mentioned.

Even if the acrylic resin has the same constitutional unit, the viscosity average molecular weight and the glass transition point also change depending on the polymerization conditions and the like.
As an acrylic resin composed of a copolymer of (I-2) and the structural unit (V-1), Optrez OZ-1100 is available.
(Tg = 120 ° C .; Hitachi Chemical Co., Ltd.), Optrez OZ-5000 (Tg = 130 ° C .; Hitachi Chemical Co., Ltd.)
Manufactured) etc. The acrylic resin used in the present invention is used in an amount of 10 to 50 relative to a dye such as a squarylium compound, a metal complex or a tetraazaporphyrin compound.
It is 0 times by weight, preferably 50 to 350 times by weight.

The acrylic resin containing the structural unit of the general formula (I) has good solubility in organic solvents, especially ether solvents, and when used as a binder, has good durability such as heat resistance and light resistance. It is possible to obtain various display filters. This is because the acrylic resin having the general formula (I) as a constitutional unit has (i) a squarylium compound, a metal complex or a tetraazaporphyrin compound in a stable resonance structure in the acrylic resin, (ii) ) The molecular structure of the acrylic resin of the general formula (I) has no residue of an active group such as a carboxylic acid at the end of the molecule, so that the structure that promotes the deterioration of the squarylium compound, the metal complex or the tetraazaporphyrin compound is (Iii) Since the acrylic resin has a high glass transition point (Tg), the water or the like that causes the deterioration of the squarylium-based compound, the metal complex or the tetraazaporphyrin-based compound is not affected by the squarylium-based compound or the metal complex. Alternatively, since it is difficult to penetrate into the acrylic resin layer containing the tetraazaporphyrin compound, it is possible to improve the durability such as heat resistance and light resistance. It is thought that it will be improved.

Up to now, in the general formula (V), as a resin which is easily dissolved in an organic solvent, R ₅ = -CH ₃ , R ₆ = -CH ₃
A filter for a plasma display panel using an acrylic resin (polymethylmethacrylate; PMMA) or the like having a structural unit (V-1) represented by the following is known, but it has a low glass transition point. The dissolved dye has poor durability such as heat resistance, and, for example, the performance when used as a filter for a plasma display panel was not sufficient. The present invention has sufficient heat resistance and light resistance for the first time by using a specific acrylic resin, and when used as a display filter such as a filter for a plasma display panel, a highly practical product can be obtained. I found that.

The acrylic resin having a polycyclic alicyclic ring represented by the general formula (I) is a birefringent material (a value obtained by measuring the phase difference of a single pass of a He--Ne laser in a cavity portion of an injection molded product, a plastic age). 1999. Jan. 134-
(See page 138) is as small as 1 to 4 nm, and uniform transmitted light can be obtained, so that a uniform and high-definition image can be obtained. On the other hand, polymethylmethacrylate (P
In the case of acrylic resin consisting only of MMA), -5 nm
With high birefringence, a high-definition image cannot be obtained.

In the plasma display panel filter of the present invention, when the squarylim compound of the general formula (II) is used as a dye, a filter having a particularly excellent color balance can be obtained. In the general formula (II), examples of the preferable aryl group of the aryl group in which the substituents A and B may have a substituent include a phenyl group and a naphthyl group, which may have a substituent. Examples of the preferable heterocycle of the heterocyclic group include a pyrrole group and a pyrazole group, and among these, a phenyl group is particularly preferable. Preferred heterocycles of the heterocyclic group which may have a substituent D are 2,3-dihydroindole ring, 2,3-dihydrobenzothiazole ring, 2,3-dihydrobenzoxazole ring and the like. Is mentioned.

In the general formula (II), the substituents A and B are
When S is a phenyl group which may have a substituent, a preferred squarylium compound is represented by the above general formula (III). In the general formula (III), preferable examples of the substituent R ₃ include the following ones (i) to (vii).

(I) Halogen atom such as fluorine atom, chlorine atom, bromine atom; (ii) methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, decyl group, undecyl Group, a dodecyl group, a tridecyl group, a pentadecyl group, or another straight-chain or branched-chain alkyl group having 1 to 20 carbon atoms; (iii) an alkoxy group such as a hydroxy group, a methoxycarbonyl group, an ethoxycarbonyl group, or a butoxycarbonyl group as a substituent. C1-C20 having an acyloxycarbonyl group such as a carbonyl group, an acetyloxy group carbonyl group, a propionyloxycarbonyl group, an methoxycarbonyloxy group, an ethoxycarbonyloxy group, an alkoxycarbonyloxy group such as a butoxycarbonyloxy group, etc. Linear or branched alkyl group; (iv) met Shi group, an ethoxy group, a propoxy group, a butoxy group, Pen'nchiruokishi group, hexyloxy group, heptyloxy group, octyloxy group, Deshiokishi group, undecyl group, dodecyl group, tridecyl group,
A straight-chain or branched-chain alkoxy group having 1 to 20 carbon atoms such as a pentadecyloxy group; (v) a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentyloxy group, a hexyloxy group, a heptyloxy group, an octyl group as a substituent 1 carbon atom such as oxy group
A straight-chain or branched-chain alkoxy group having 1 to 20 carbon atoms having an alkoxy group of 8 to 8; (Vi) In -NH-X-R ₄ as a substituent, X is CO
Alternatively, in SO ₂ , as the organic residue R ₄ , an alkyl group which may have a substituent, a cycloalkyl group which may have a substituent, an alkoxy group which may have a substituent,
An aryl group which may have a substituent, an aryloxy group which may have a substituent, an amino group which may have a substituent, or a heterocyclic group which may have a substituent. Is mentioned.

The organic residue R ₄ is preferably a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group or a hexyl group which may be substituted with a halogen atom such as a fluorine atom, a chlorine atom or a bromine atom. , A heptyl group, an octyl group, a decyl group, an undecyl group, a dodecyl group, a tridecyl group, a pentadecyl group, etc., having a linear or branched chain alkyl group having 1 to 20 carbon atoms; a methoxy group, an ethoxy group, a propoxy group, a butoxy group, a pentyloxy group. Group, hexyloxy group, heptyloxy group, octyloxy group, decoxy group, undecyloxy group, dodecyloxy group, tridecyloxy group, pentadecyloxy group, etc.
20 straight-chain or branched-chain alkoxy groups; alkyl groups having 1 to 10 carbon atoms such as methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, and decyl group as substituents A cycloalkyl group having 3 to 7 carbon atoms which may have; a linear or branched alkyl group having 1 to 20 carbon atoms substituted with the above cycloalkyl group; a methyl group, an ethyl group, a propyl group as a substituent , Butyl group, pentyl group, hexyl group, heptyl group, octyl group, decyl group and the like, alkyl group having 1 to 10 carbon atoms, methoxy group, ethoxy group, propoxy group, butoxy group, pentyloxy group, hexyloxy group, heptyloxy group Groups, octyloxy groups, decyloxy groups and other alkoxy groups having 1 to 10 carbon atoms, fluorine atoms, chlorine atoms,
An aryl group such as a phenyl group which may be substituted with a halogen atom such as a bromine atom; an aryloxy group having the above aryl group; a carbon number 1 substituted with the above aryl group
20 straight-chain or branched-chain alkyl group; an amino group optionally substituted by 1 or 2 of the alkyl groups mentioned for R ₁ ; 3-pyridyl group, 2-furyl group, 2-tetrahydrofuryl group, Examples thereof include a heterocyclic group such as a 2-thienyl group.

Of these, a linear or branched alkyl group having 1 to 8 carbon atoms; an alkoxy group having 1 to 6 carbon atoms;
—NH—X—R ₄ (X is CO or SO ₂ , and R ₄ is a straight chain or branched chain having 1 to 8 carbon atoms which may be substituted with a halogen atom such as a fluorine atom, a chlorine atom and a bromine atom. (Representing an alkyl group) is particularly preferred. Further, in the general formula (II), it is also preferable that A and B are pyrazole groups which may have a substituent. When the substituents A and B are pyrazole groups which may have a substituent, a preferred squarylium compound is represented by the following general formula (VI).

[0042]

[Chemical 14]

[In the formula (VI), R ₇ represents an alkyl group which may have a substituent or an aryl group which may have a substituent, and R ₈ has a substituent. Represents an optionally substituted alkyl group, an optionally substituted alkylamino group, or an optionally substituted arylamino group, wherein each R ₇ and R ₈ are the same. May also be different. Z represents -O- or -NH-. Examples of the alkyl group which may have a substituent of the substituents R ₇ and R ₈ include the alkyl groups mentioned above as the substituent R ₃ of the general formula (III), and the substituent of the substituent R ₇ Examples of the aryl group which may have a group include the aryl groups mentioned above as the substituent R ₄ in the general formula (III), and the alkylamino which may have a substituent of the substituent R ₈ Examples of the group include mono- or dialkylamino groups having the alkyl group mentioned above for the substituent R ₇ , and examples of the arylamino group which may have a substituent for the substituent R ₈ are as described above. an aryl amino group having an aryl group mentioned in the substituent R _7.

The squarylium compounds represented by the above general formulas (II), (III) and (VI) are preferably bilaterally symmetrical compounds in terms of stability as a compound and ease of production. The squarylium compounds of the general formula (III) and the general formula (VI) are described, for example, in Angew. Chem. 77 680-681 (1
965) It can be manufactured by the methods described or in accordance with them.

That is, the following general formula (VII)

[0046]

[Chemical 15]

[In the formula, R ₃ , m and n have the same meanings as described above. ] 2 mol of a phenolic compound represented by or the following general formula (VIII)

[0048]

[Chemical 16]

[In the formula, R ₇ , R ₈ and Z have the same meanings as described above. ] With respect to 2 mol of the pyrazolone compound represented by each, 1 mol of squaric acid was respectively mixed with ethanol, acetic acid, n-butyl alcohol-toluene mixed solvent,
In n-butyl alcohol-benzene mixed solvent, etc., 7
It can be synthesized by dehydration condensation while heating at about 0 to 150 ° C.

Typical examples of the general formula (III) are shown below.

[0051]

[Chemical 17]

[0052]

[Chemical 18]

Preferred chemical structure examples of the general formula (III) are shown below.

[0054]

[Chemical 19]

[0055]

[Chemical 20]

Typical examples of the general formula (VI) are shown below.

[0057]

[Chemical 21]

Preferred examples of the chemical structure of general formula (VI) are shown below.

[0059]

[Chemical formula 22]

The squarylium compound of the general formula (III) efficiently cuts the neon emission near 590 nm of the plasma display, and emits a phosphor of 500 to 500.
It is preferable not to cut off green light emission around 530 nm and red light emission with a wavelength longer than 600 nm. For this,
The transmission curve of the squarylium dye should have a sharp valley type (valley type), and the wavelength at the minimum value of the transmission curve of the squarylium dye is 570 nm.
-605 nm is preferable, 580-600 nm is more preferable, and the half width of the transmittance curve is preferably 60 nm or less. Further, in order to secure the brightness of the visual field, it is preferable that the squarylium compound does not have the minimum value of the transmittance curve except the minimum value of the transmittance curve near 590 nm.
Even if it has 70% or more, more preferably 80% or more, the visible light transmittance is preferably 40% or more,
More preferably, it is 50% or more.

Further, the filter of the present invention containing the squarylium dye of the general formula (VI) has the minimum value of the transmittance curve in the vicinity of 480 to 520 nm so as not to inhibit the emission of the blue or green phosphor. It is better that the transmittance curve has a sharp valley type (valley type), and the half-value width of the transmittance curve is preferably 60 nm or less, and the transmittance curve other than the minimum value of the transmittance curve is preferable. It is preferable not to have a minimum value of. Further, the transmittances at 450 nm, 500 nm, and 550 nm are preferably 70% or more, 30% or more, and 70% or more, respectively, so as not to inhibit the emission of blue or green phosphor. Here, the display filter of the present invention is, as described below, an infrared absorption layer, an electromagnetic wave shielding layer, a light ray reflection preventing layer, and a glare prevention (non-glare) as necessary.
Layer, scratch prevention layer, etc. are provided. In this case, as the number of laminated layers increases, the light transmittance as a whole decreases, but finally the luminous transmittance is 30% or more, preferably 35 to 50.
It has only to be adjusted to%.

In the display filter of the present invention, when a metal complex represented by the following general formula (IV) is used as a dye, an excellent filter capable of effectively cutting near infrared rays can be obtained. In the general formula (IV),

[0063]

[Chemical formula 23]

M represents a metal element, preferably Ni,
It represents Pd, Pt, Co, Fe, Ti, Sn or Cu. More preferably, Ni, Pd and Pt are used.
X _{1 to} X ₁₀ are each independently a hydrogen atom, a halogen atom, an alkoxy group, a nitro group, a cyano group, an optionally substituted alkyl group, an optionally substituted aryl group or a substituent. It represents an aralkyl group which may be possessed. Specifically, hydrogen atom, fluorine atom, chlorine atom,
Bromine atom, methoxy group, ethoxy group, t-butoxy group,
an alkoxy group having 1 to 5 carbon atoms such as n-butoxy group,
C1-C5 alkyl groups such as nitro group, cyano group, methyl group, ethyl group, i-butyl group, t-butyl group, n-butyl group, n-pentyl group, aryl group, benzyl group, phenethyl group And an aralkyl group such as, and preferably a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, a methoxy group, an ethoxy group, a t-butoxy group, an n-butoxy group or another alkoxy group having 1 to 5 carbon atoms, Examples thereof include electron-withdrawing groups such as nitro group and cyano group.

Y _{1 to} Y ₈ are each independently a hydrogen atom, an alkyl group which may have a substituent, an aryl group which may have a substituent, or an aralkyl group which may have a substituent. Represents an optionally substituted alkoxy group, nitro group, halogen atom, amino group, substituted amino group or cyano group, preferably a hydrogen atom, an alkyl group,
Aryl group, aralkyl group, alkoxy group, nitro group,
It represents a halogen atom, an amino group, a substituted amino group or a cyan group, more preferably a hydrogen atom; a methyl group, an ethyl group, an i-butyl group, a t-butyl group, an n-butyl group, an n.
An alkyl group having 1 to 5 carbon atoms such as a pentyl group; an aralkyl group such as an aryl group, a benzyl group and a phenethyl group;
C1-C5 alkoxy groups such as methoxy group, ethoxy group, t-butoxy group, n-butoxy group; nitro group; halogen atoms such as chlorine atom, bromine atom, fluorine atom; amino group; dimethylamino group, diethylamino Group, a substituted amino group such as diphenylamino group; or a cyano group, and a hydrogen atom is particularly preferably used.

Specifically, as a preferable one,

[0067]

[Chemical formula 24]

Examples include: Since the metal complex of the general formula (IV) has absorption around 700 to 950 nm,
Near infrared rays emitted from plasma displays can be cut off to prevent malfunctions in remote controls and optical transmission systems. In the display filter of the present invention, when a tetraazaporphyrin compound represented by the following general formula (V) is used as a dye, an excellent filter capable of effectively cutting Ne emission can be obtained. In the general formula (V),

[Chemical 25] Examples of the halogen atom of G ^{1 to} G ⁸ include a fluorine atom,
Examples of the chlorine atom, bromine atom and the like, the alkyl group, for example, methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, decyl group, undecyl group, dodecyl group, Examples of the alkoxy group include linear, branched or cyclic ones having 1 to 20 carbon atoms such as tridecyl group, pentadecyl group, cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group and cycloheptyl group. For example, methoxy group, ethoxy group, propoxy group, butoxy group, pentyloxy group, hexyloxy group, heptyloxy group, octyloxy group, decyloxy group, undecyloxy group, dodecyloxy group, tridecyloxy group,
Examples of the aryl group include a straight chain or branched chain having 1 to 20 carbon atoms such as a pentadecyloxy group.
For example, a phenyl group, a naphthyl group, and the like, examples of the aryloxy group include a phenoxy group, a naphthyloxy group, and the like, and an alkylamino group or a dialkylamino group, a methyl group, an ethyl group, a propyl group, Butyl group, pentyl group, hexyl group, heptyl group,
An amino group which is mono-substituted or di-substituted by a linear or branched alkyl group having 1 to 20 carbon atoms such as octyl group, decyl group, undecyl group, dodecyl group, tridecyl group, pentadecyl group, etc. Is, for example, methylthio group, ethylthio group, propylthio group, butylthio group, pentylthio group, hexylthio group, heptylthio group, octylthio group, decylthio group, undecylthio group, dodecylthio group, tridecylthio group, pentadecylthio group, etc. There may be mentioned 20 straight-chain or branched-chain groups, and examples of the arylthio group include a phenylthio group and a naphthylthio group.

The substituents on the alkyl group, alkoxy group, aryl group, aryloxy group, alkylamino group, dialkylamino group, alkylthio group and arylthio group include, for example, methyl group, ethyl group, propyl group, Butyl group, pentyl group, hexyl group, heptyl group, octyl group, decyl group, cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, and other alkyl groups having 1 to 10 carbon atoms; methoxy group, ethoxy group , A propoxy group, a butoxy group, a pentyloxy group, a hexyloxy group, a heptyloxy group, an octyloxy group, a decyloxy group, and the like, an alkoxy group having 1 to 10 carbon atoms; a hydroxyl group; or a fluorine atom, a chlorine atom, a bromine atom, A halogen atom etc. are mentioned. Further, G ¹ and G ² , G ³ and G ⁴ , G ⁵ and G ⁶ , G ⁷ and G ⁸ are respectively connected,
An aliphatic carbon ring such as (CH ₂ ) ₃ -,-(CH ₂ ) ₄ -,-(CH ₂ ) _5- may be formed. In the general formula (I), G ¹
~ G ⁸ is, in the above, (1) a linear or branched alkyl group optionally having an alkoxy group or a halogen atom as a substituent, (2) a linear or branched chain A cycloalkyl group which may have an alkyl group as a substituent, (3) an alkyl group, an alkoxy group or an aryl group which may have a halogen atom as a substituent, (4) a halogen atom, or (5 ) It is preferable that they are linked to each other to form an aliphatic carbon ring, and a linear or branched alkyl group having 1 to 8 carbon atoms or linked to-(CH ₂ ) ₃ -or-(CH ₂ ) _4- is particularly preferred. As M'in the above general formula (I), two hydrogen atoms; or 2nd group, 3rd group, 4th group, 8th group, 9th group, 10th group of the periodic table based on the 1990 rule of inorganic chemical nomenclature
A divalent metal atom, a trivalent mono-substituted metal atom, a tetravalent di-substituted metal atom or an oxy metal atom selected from elements belonging to the genus, the genus 11, the genus 12, the genus 13, the genus 14 or the genus 15 is shown. As a specific example thereof, Cu,
Zn, Fe, Co, Ni, Ru, Rd, Pd, Mn, S
n, Mg, Ti, etc. are mentioned, and as the trivalent monosubstituted metal atom, Al-Cl, Ga-Cl, In-Cl, Fe-Cl,
Examples thereof include metal atoms monosubstituted by a halogen atom such as Ru-Cl, a hydroxyl group or an alkoxy group, and tetravalent disubstituted metals include SiCl ₂ , GeCl ₂ , TiCl ₂ , SnC.
l ₂ , Si (OH) ₂ , Ge (OH) ₂ , Mn (OH) ₂ ,
Examples thereof include a halogen atom such as Sn (OH) ₂ and a metal atom disubstituted with a hydroxyl group or an alkoxy group. Examples of the oxy metal include VO, MnO and TiO. Of these, VO, Cu, Ni and Co are preferable, and VO and Cu are more preferable. Preferred specific examples of the tetraazaporphyrin-based dye of the general formula (I) of the present invention described above are shown below.

[Chemical formula 26]

The tetraazaporphyrin-based dye of the present invention has, for example, a substituent M ′ in the general formula (V).
Is a Mg atom, and acetic acid is reacted with the compound to remove a Mg atom to obtain a compound in which M ′ is two hydrogen atoms, and the substituent M ′ in the general formula (I) is M.
Compounds that are g atoms are reacted with various metal salts to give M ′
Is a divalent metal atom, a trivalent mono-substituted metal atom, a tetravalent di-substituted metal atom or an oxy metal atom as defined above. J. Gen. Chem. USSR, vol.47,195
It can be synthesized according to the method described in 4 to 1958 (1977) or by combining other known methods. The wavelength showing the minimum value of the transmittance in the light transmittance curve of the tetraazaporphyrin compound represented by the general formula (V) is 550 to 610 nm, preferably 580 to 6 nm.
00 nm, and the minimum value is 35% or less, further 30
% Or less is preferable. Further, it is preferable that the absorption waveform at the minimum value has a sharp valley type with a full width at half maximum of 60 nm or less.

In the present invention, a method for producing a filter for a display is based on the layer constitution, layer material and the like in each filter application. For example, in the general formulas (II), (III) and (VI), The above-mentioned dyes obtained by directly dissolving or dispersing the squarylium compound represented by the formula, the metal complex represented by the general formula (IV) or the tetraazaporphyrin compound represented by the general formula (V) in an acrylic resin. Injection molding, T-die molding,
Molding using a molding technique such as calender molding or compression molding, it can be formed into a film, and may be produced by laminating it with another transparent substrate as necessary, but in the plasma display panel filter particularly preferred in the present invention, The method described below is suitable. The squarylium compounds represented by the general formulas (II), (III) and (VI) of the filter of the present invention, the metal complex represented by the general formula (IV) or the tetraazaporphyrin represented by the general formula (V) The layer containing the compound is formed on the transparent substrate formed into a film or sheet by using the compound represented by the general formula (II) or (II
I), a squarylium compound represented by (VI), a metal complex represented by the general formula (IV) or a coating solution containing a tetraazaporphyrin compound represented by the general formula (V) is coated, It can be obtained as a single layer containing a mixture of compounds or as a laminated body in which layers containing the above compounds are laminated, and the method for producing the layer includes dipping method, flow coating method, spraying method and bar coating method. The coating is performed by a known coating method such as a gravure coating method, a roll coating method, a blade coating method and an air knife coating method. The coating amount at this time is such that the dry film thickness is 0.1 to 30.
.mu.m, preferably 0.5-10 .mu.m.

The coating solution is represented by the squarylium compounds represented by the general formulas (II), (III) and (VI), the metal complex represented by the general formula (IV) or the general formula (V). A method in which a tetraazaporphyrin compound is dissolved in an organic solvent together with an acrylic resin of formula (I), or a squarylium compound atomized to a particle size of 0.1 to 3 μm, a metal complex or a tetraazaporphyrin compound is dispersed as necessary. It is prepared by a method of using an agent and dispersing it in a solvent together with an acrylic resin. At this time, the squarylium compound, the metal complex represented by the general formula (IV) and / or the general formula (V)
In a mixture of dyes such as a tetraazaporphyrin compound represented by, an acrylic resin used as a binder and other dispersants added as necessary,
The proportion of the above-mentioned dyes is 0.05 to 50% by weight, preferably 0.1 to 20% by weight. The content of the mixture in the coating liquid is 0.5 to 50% by weight.

Examples of the organic solvent include butane,
Alkanes such as pentane, hexane, heptane, octane; cycloalkanes such as cyclopentane, cyclohexane, cycloheptane, cyclooctane; ethanol, propanol, butanol, amyl alcohol, hexanol, heptanol, octanol, decanol, undecanol, diacetone alcohol , Furfuryl alcohol and other alcohols; methyl cellosolve, ethyl cellosolve, butyl cellosolve, methyl cellosolve acetate, ethyl cellosolve acetate and other cellosolves; propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol monomethyl ether acetate , Propylene glycol monoethyl ether acetate Propylene glycols such as propylene glycol monobutyl ether acetate and dipropylene glycol dimethyl ether; ketones such as acetone, methyl amyl ketone, cyclohexanone and acetophenone; ethers such as dioxane and tetrahydrofuran; butyl acetate, amyl acetate, ethyl butyrate, butyl butyrate , Diethyl oxalate, ethyl pyruvate, ethyl-2-hydroxybutyrate, ethyl acetoacetate, methyl lactate, ethyl lactate, methyl 3-methoxypropionate, etc .; halogenated carbonization such as chloroform, methylene chloride, tetrachloroethane, etc. Hydrogen; aromatic hydrocarbons such as benzene, toluene, xylene, cresol; high polarity such as dimethylformamide, dimethylacetamide, N-methylpyrrolidone Agents, and the like.

Examples of the dispersant used as necessary include polyvinyl butyral resin, phenoxy resin, rosin-modified phenol resin, petroleum resin, cured rosin, rosin ester, maleated rosin, polyurethane resin and the like. The amount used is squarylium compound, metal complex or tetraazaporphyrin compound to 0.
It is 5 to 150 times by weight, preferably 0.5 to 20 times by weight.

The material of the sheet-shaped or film-shaped transparent base material constituting the display filter of the present invention is not particularly limited as long as it is a material that is substantially transparent and does not significantly absorb or scatter. Specific examples include glass, polyolefin resin, amorphous polyolefin resin, polyester resin, polycarbonate resin, acrylic resin, polystyrene resin, polyvinyl chloride resin, polyvinyl acetate resin, polyarylate. Resin,
Examples thereof include polyether sulfone resin, and among these, amorphous polyolefin resin, polyester resin, polycarbonate resin, acrylic resin, polyarylate resin, polyether sulfone resin and the like are particularly preferable.
Further, the resin is formed into a film or sheet by using a known method such as injection molding, T die molding, calender molding, compression molding, or a method of casting by melting in an organic solvent. , In addition to commonly known additives, heat anti-aging agents, lubricants, antistatic agents, etc.,
Cyanine dyes, anthraquinone dyes, phthalocyanine dyes, pyrromethene dyes, methine dyes, squarylium dyes, and the like, in a bandpass filter for a display, any dye that satisfies each required performance can be blended. . Can be blended. The thickness is preferably in the range of 10 μm to 5 mm. The base material forming such a transparent substrate may be unstretched or stretched. Further, it may be laminated with another base material. Furthermore, the transparent substrate is treated with corona discharge,
Surface treatment by a conventionally known method such as flame treatment, plasma treatment, glow discharge treatment, surface roughening treatment, chemical treatment or the like, or coating with an anchor coating agent or a primer may be applied. Incidentally, in producing the filter for a display of the present invention, the present invention is characterized by using the above-mentioned acrylic resin as a main component as a binder resin used in the dye-containing layer. A known binder resin such as a polyester-based resin or a polycarbonate-based resin may be mixed in a small amount, specifically 20% by weight or less, and further 10% by weight or less, as long as the above function is not impaired. Further, in the present invention, as a dye for a display filter, 380
A yellow dye that absorbs light of blue to violet in the vicinity of ˜420 nm can be used alone or in combination with the above dye. As such a yellow dye, a pyrazolemethine compound represented by the following general formula (IX) can be given.

[0076]

[Chemical 27]

[In the formula (IX), R ₉ represents a hydrogen atom, an alkyl group which may have a substituent or an aryl group which may have a substituent, and R ₁₀ represents a hydrogen atom, An amino group which may have a substituent, an alkyl group which may have a substituent, an alkoxy group which may have a substituent, an aryl group which may have a substituent, a substituent Represents an aryloxycarbonyl group that may have an alkoxycarbonyl group or a substituent,
Each R ₁₀ may be the same or different. R ₁₁
Represents a hydrogen atom, an alkyl group which may have a substituent or an aryl group which may have a substituent, and each R ₁₁ may be the same or different. ] An example of a preferable chemical structure of the pyrazolemethine compound represented by the general formula (IX) is shown below.

[0078]

[Chemical 28]

By using the above-mentioned pyrazolemethine compound, it is possible to selectively and efficiently absorb blue to violet in the vicinity of 380 to 420 nm, while there is almost no absorption in other wavelength regions. It is possible to obtain a natural color tone, that is, a colorless filter without deteriorating the brightness of, and it is possible to bring the color tone of the screen obtained by phosphor emission closer to the ideal three primary colors. The pyrazolemethine-based compound can be prepared by laminating the compound-containing resin layer in the same manner as the squarylium-based compound, the metal complex and the tetraazaporphyrin-based compound, and laminating the compound, but the squarylium-based compound, the metal complex and / Alternatively, they may be contained together in the tetraazaporphyrin compound-containing resin layer.

The display filter of the present invention containing the dye represented by the pyrazolemethine compound represented by the general formula (IX) has a transmittance in the vicinity of 380 to 420 nm so as not to inhibit the emission of the blue phosphor. It is better to have the minimum value of the curve and the transmittance curve to have a sharp valley type (valley type), and the half width of the transmittance curve is 60 nm.
The following is preferable. Substituent R ⁹ of formula (IX)
Of these, a phenyl group which may have a substituent has a smaller full width at half maximum as compared with other groups, and is preferable. In addition, it is preferable that the transmittance curve has a minimum value other than the minimum value of the transmittance curve because the transmittance of the filter becomes high.
400nm, so as not to block the emission of blue or green phosphor,
The transmittance at 450 nm is preferably 30% or more and 70% or more, respectively. Here, as described below, the display filter of the present invention is provided with an infrared absorption layer, an electromagnetic wave shielding layer, a light ray antireflection layer, a glare prevention (non-glare) layer, a scratch prevention layer, etc., if necessary. In this case, as the number of laminated layers increases, the light transmittance as a whole decreases,
Finally, the luminous transmittance is 30% or more, preferably 35 to
It should be adjusted to 50%.

Further, the display filter of the present invention preferably further contains an antioxidant or an ultraviolet absorber. As a form of containing these, the antioxidant coexists in the dye-containing resin layer. Preferably, and
The ultraviolet absorber may coexist in the resin layer, but it is preferable that the ultraviolet absorber is provided as an independent layer containing the ultraviolet absorber. For example, in addition to the acrylic resin, polymethyl methacrylate, polyethyl Acrylic resin such as acrylate, polycarbonate resin, ethylene-vinyl alcohol copolymer resin, ethylene-vinyl acetate copolymer resin, AS resin, polyester resin, vinyl chloride resin, polyvinyl butyral resin, PVPA, polystyrene resin A phenol resin, a phenoxy resin, a polysulfone, a nylon, a cellulose resin, a cellulose acetate resin or the like is used as a binder resin by a coating method, and is usually 0.1 to 30 μm, preferably 0.5 to 1 μm.
It can be formed by forming a layer having a film thickness of 0 μm or by including it in the transparent substrate. Incidentally, when the ultraviolet absorber does not coexist in the dye-containing resin layer,
It is preferable that the ultraviolet absorber-containing layer is located outside the dye-containing resin layer when used as a filter, or in a layer located outside the dye-containing resin layer.

Examples of the antioxidant include 2,6-di-t-butyl-p-cresol and 2,6.
-Di-t-butyl-4-hydroxymethylphenol,
2,6-di-t-butyl-4-ethylphenol, 2,
4,6-Tris-t-butylphenol, n-octadecyl-3- (3 ', 5'-di-t-butyl-4'-hydroxyphenyl) propionate, stearyl-β-
(3,5-di-t-butyl-4-hydroxyphenyl)
Propionate, 2,2'-methylenebis (4-methyl-6-t-butylphenol), 2,2'-methylenebis (4-ethyl-6-t-butylphenol), 4,
4'-isopropylidene bisphenol, 4,4'-methylene bis (2,6-di-t-butylphenol),
4,4'-butylidene bis (3-methyl-6-t-butylphenol), 1,1-bis (4'-hydroxyphenyl) cyclohexane, 2,6-bis (2'-hydroxy-3'-t-butyl-) 5'-methylbenzyl) -4-
Methylphenol, 2,2'-thiobis (4-methyl-
6-t-butylphenol), 4,4′-thiobis (2
-Methyl-6-t-butylphenol), 4,4'-thiobis (3-methyl-6-t-butylphenol),
1,1,3-Tris (2'-methyl-4'-hydroxy-5'-t-butylphenyl) butane, 1,3,5-trimethyl-2,4,6-tris (3 ', 5'- The-t-
Butyl-4'-hydroxybenzyl) benzene, tris (3,5-di-t-butyl-4-hydroxyphenyl)
Isocyanurate, tris [β- (3,5-di-t-butyl-4-hydroxyphenyl) propionyloxyethyl] isocyanurate, tetrakis [methylene-3-
(3 ', 5'-di-t-butyl-4'-hydroxyphenyl) propionate] Phenol such as methane; sulfur such as dilaurylthiodipropionate, dimyristylthiodipropionate, distearylthiodipropionate System; triphenyl phosphite, diphenyl isodecyl phosphite, phenyl diisodecyl phosphite,
Tris (nonylphenyl) phosphite, tris (mono- and di-nonylphenyl) phosphite, 4,4′-butylidene bis (3-methyl-6-t-butylphenyl)
Examples thereof include phosphorus-based compounds such as ditridecyl phosphite, distearyl pentaerythritol diphosphite, and trilauryl trithiophosphite. Among these, phenol-based antioxidants or phosphorus-based antioxidants are preferable. The amount of the antioxidant added is usually the binder resin 10
It is used in an amount of 0.01 to 20 parts by weight, preferably 0.5 to 10 parts by weight, based on 0 parts by weight. When the above antioxidant is used in excess, a strong light beam hits the antioxidant, and the antioxidant itself is oxidized, which induces a chain oxidation reaction of the dye and rather deteriorates the light resistance of the dye. In that case, it is preferable to use an ultraviolet absorber together.

Examples of the ultraviolet absorber include, for example,
2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-5'-butylphenyl) benzotriazole, 2- (2'-hydroxy-5'-t-butylphenyl) Benzotriazole, 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole, 2- (2'-hydroxy-
3 ', 5'-di-t-butylphenyl) benzotriazole, 2- (2'-hydroxy-3', 5'-di-t-
Amylphenyl) benzotriazole, 2- (2'-hydroxy-3'-t-butyl-5'-methylphenyl)
Benzotriazoles such as -5-chlorobenzotriazole and 2- (2'-hydroxy-3 ', 5'-di-t-butylphenyl) -5-chlorobenzotriazole;
2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-
Octyloxybenzophenone, 2-hydroxy-4-
Benzophenone compounds such as dodecyloxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone and 2,2'-dihydroxy-4,4'-dimethoxybenzophenone; phenyl salicylate, pt-butylphenyl salicylate, p-octylphenyl Salicylates such as salicylate; hexadecyl-2,5-t-butyl-4-hydroxybenzoate, 2,4-di-t-
Butylphenyl-3 ', 5'-di-t-butyl-4'-
Examples thereof include benzoate-based organic UV absorbers such as hydroxybenzoate, and inorganic UV absorbers such as titanium oxide, zinc oxide, cerium oxide, iron oxide, and barium sulfate. Of these, the wavelength exhibiting 50% transmittance is 350
It is preferably about 420 nm, more preferably 360 nm.
nm to 400 nm. If the wavelength is shorter than 350 nm, the UV blocking ability is weak, and if the wavelength is longer than 420 nm, the coloring is strong, which is not preferable.

The independent ultraviolet absorbing layer as described above is
Instead of providing the ultraviolet absorbent-containing layer, a commercially available ultraviolet cut filter, for example, "Sharp cut filter SC-38" manufactured by Fuji Photo Film Co., Ltd.
It can also be formed by laminating with "39", "SC-40", "Acryprene" manufactured by Mitsubishi Rayon Co., Ltd., and the like.

Further, the display filter of the present invention may further contain an antistatic agent, a lubricant, a release agent, a flame retardant, a flame retardant auxiliary agent, a filler, etc. as far as the effect of the present invention is not impaired. Various additives and the like which are usually used in the resin molded body may be contained in an appropriate content form.

Further, a commercially available ultraviolet cut filter may be laminated and used instead of applying and forming the ultraviolet absorber containing layer. Such filters include sharp cut filters SC-38, SC-39, SC-4.
No. 0 (manufactured by Fuji Photo Film Co., Ltd.) and Acryprene (Mitsubishi Rayon Co., Ltd.).

Organic UV absorbers and inorganic UV absorbers can be used as the UV absorber. Examples of the organic ultraviolet absorber include 2- (2′-hydroxy-5′-t-butylphenyl) benzotriazole and 2- (2′-hydroxy-3 ′, 5′-di-t-butylphenyl) benzotriazole. Such as benzotriazole compounds, 2-hydroxy-4-methoxybenzophenone, benzophenone compounds such as 2-hydroxy-4-n-octyloxybenzophenone, phenyl salcilate, 4-t-butylphenyl salsylate, 2, 5-t-butyl-4-
Hydroxybenzoic acid n-hexadecyl ester, 2,4
Examples thereof include hydroxybenzoate compounds such as -di-t-butylphenyl-3 ', 5'-di-t-butyl-4'-hydroxybenzoate. Examples of the inorganic ultraviolet absorber include titanium oxide, zinc oxide, cerium oxide, iron oxide and barium sulfate.
As a UV absorber, the wavelength at 50% transmittance is 350
Is preferably 420 nm, more preferably 360 nm.
When the wavelength is 400 nm and lower than 350 nm, the ultraviolet blocking ability is weak, and when the wavelength is higher than 420 nm, coloring is strong, which is not preferable.

The display filter of the present invention, particularly the plasma display panel filter, further comprises a near-infrared absorbing layer, an electromagnetic wave shielding layer, a light reflection preventing layer,
A glare-preventing (non-glare) layer, a scratch-preventing layer and the like can be provided, and the arrangement of each layer in the filter may be arbitrarily selected, but it is preferable that they are arranged in this order. The thickness of each of these layers is usually 0.1 to 30 μm.
m, preferably about 0.5 to 10 μm.

The near-infrared absorbing layer is provided for the purpose of preventing malfunctions in the remote controller and transmission optical communication due to near-infrared rays emitted from the plasma display. Here, the near-infrared absorbing layer may be formed as an independent layer by using a binder resin for the near-infrared absorbing substance as described above, but is used between layers of a filter manufactured as a laminate. The near-infrared absorbing substance may be added to any one of filter constituent layers such as an adhesive layer or a scratch-prevention layer described below, or a layer formed of an anchor coating agent used as appropriate. The wavelength of near-infrared light to be absorbed is especially problematic for remote control operation and optical transmission system.
Any near-infrared absorbing substance can be used as long as it is in the region of 0 to 1000 nm and has absorption in that region, and the near-infrared transmittance in the above region is preferably 15% or less, more preferably 10%. % Or less.

Examples of the near infrared ray absorbing agent include nitroso compounds and their metal complex salts, cyanine compounds,
Thiol nickel complex salt type compound, dithiol nickel complex salt type compound, aminothiol nickel complex salt type compound, phthalocyanine type compound, naphthalocyanine type compound, triallylmethane type compound, immonium type compound, diimonium type compound, naphthoquinone type compound, anthraquinone type compound, Amino compounds, aminium salt compounds, and other organic substances such as squarylium compounds and methine compounds, antimony-doped tin oxide, indium-doped tin oxide, Group IV, Group V, and Group VI of the periodic table Inorganic substances such as oxides, carbides, and borides of the metals to which they belong can be cited.

The electromagnetic wave shielding layer is provided in order to prevent the electromagnetic waves generated by the light emission from the display device from adversely affecting the living body and electronic equipment. The electromagnetic wave shielding layer is
It consists of thin films of metals or metal oxides such as silver, copper, indium oxide, zinc oxide, indium tin oxide, antimony tin oxide, etc., which are vacuum deposition method, ion plating method, sputtering method, CVD method, plasma chemistry. It can be manufactured by utilizing a conventionally known dry plating method such as a vapor deposition method. The most commonly used electromagnetic wave shielding layer is a thin film of indium tin oxide (sometimes abbreviated as ITO), but a copper thin film having a mesh-shaped hole or a dielectric layer and a metal layer as a base material. A laminated body in which the layers are alternately laminated on top can also be preferably used. The dielectric layer is a transparent metal oxide such as indium oxide and zinc oxide, and the metal layer is generally silver or a silver-palladium alloy. The laminated body is usually laminated so that it starts from the dielectric layer and has an odd number of layers between about 3 and 13 layers. The electromagnetic wave shielding layer may be formed as it is on any layer of the above-mentioned filter for display, or may be formed by vapor deposition or sputtering on a resin film or glass and then pasting with the filter. Further, the electromagnetic wave shielding layer has a surface specific resistance value of 5
It is preferably Ω / □ or less.

The light reflection preventing layer suppresses the reflection on the surface,
This is to prevent external light such as fluorescent light from being reflected on the surface. The light reflection preventing layer includes metal oxides such as silicon oxide, zirconium oxide, titanium oxide and aluminum oxide; metal fluorides such as magnesium fluoride and calcium fluoride; other metal silicides; boride; carbides; nitrides; It may be composed of a thin film of an inorganic material such as a sulfide, or may be composed of a resin or a resin such as a fluororesin having a different refractive index laminated in a single layer or a multilayer, and in the former case, an electromagnetic wave shielding layer. Using the same dry plating method as mentioned above, in the form of a single layer or a multilayer, a method of directly forming on the layer of the filter for a display or a resin film or glass,
A method in which the filter is laminated and then formed after vapor deposition or sputtering. In the latter case, a usual method for producing a resin laminate may be used, such as a method in which a film or sheet of a resin such as an acrylic resin or a fluororesin used is adhered to a display filter with an adhesive. In addition to this, a method of attaching a film subjected to antireflection treatment onto the filter may be used. Further, the light ray antireflection layer preferably has a luminous reflectance of 5% or less.

The antiglare layer (non-glare layer) is coated with a fine powder of silica, melamine resin, acrylic resin or the like as an ink in order to scatter transmitted light for the purpose of widening the viewing angle of the filter. It is formed by applying it on any layer of the filter of the present invention by using a method or the like, followed by thermosetting or photocuring. Further, a non-glare film may be attached on the filter.

The scratch prevention layer is made of urethane acrylate,
A coating solution prepared by dissolving or dispersing an acrylate such as an epoxy acrylate or a polyfunctional acrylate and a photopolymerization initiator in an organic solvent is formed on any layer of the filter of the present invention by a conventionally known coating method, preferably the outermost layer. It is formed by applying, drying, and photo-curing so as to be located at.

The filter for a display of the present invention, for example, a filter for a plasma display panel, preferably has the transparent substrate and the dye-containing resin layer as a basic constituent layer, and if necessary, the antioxidant. Or / and a laminate containing an ultraviolet absorber-containing layer, the near-infrared absorbing layer, the electromagnetic wave shielding layer, the light ray reflection preventing layer, the non-glare layer, the scratch preventing layer, etc., but a laminate of each of these layers The order is not particularly limited, and the stacking method is not particularly limited. Usually, an adhesive is used between each layer, and if necessary, surface treatment such as corona discharge treatment, glow discharge treatment, plasma treatment, flame treatment, and chemical treatment is performed, and isocyanate-based, polyester-based, polyethyleneimine-based Further, a known anchor coating agent such as a polybutadiene-based or alkyl titanate-based adhesive is further used for adhesion to form a laminate.

In the filter for a display of the present invention, an adhesive layer for sticking the filter to the display surface of the display may be provided as the outermost layer. With this pressure-sensitive adhesive layer, the filter can be easily attached to the front surface of the display, for example, during the manufacturing process of the display or after the manufacturing of the display.

By doing so, conventionally, the near-infrared absorption filter, in order on the front surface of the display itself,
Although it was necessary to arrange an electromagnetic wave shielding filter etc., not only the filter of the present invention is attached but the manufacturing process is simplified, but the filter is integrally formed with the display, so when viewed from the whole display device Thinning is possible. Examples of the adhesive constituting the adhesive layer include rubbers such as styrene-butadiene rubber, polyisoprene rubber, polyisobutylene rubber, natural rubber, neoprene rubber, chloroprene rubber, and butyl rubber, and methyl polyacrylate, ethyl polyacrylate, polyacryl. Low polymerization degree resins such as polyacrylic acid alkyl ester such as butyl acrylate may be used, and these may be used alone, but with addition of piccolite, polyvale, rosin ester or the like as a tackifier. Is also good.

When the surface of the display itself has a high temperature, gas may be generated by heating, and in such a case, it is necessary to add a gas absorbent or the like. For this reason, the preferred adhesive is 3
A 30 μm polyester film is attached to a 30 mm glass plate with a 30 μm adhesive, and a 180 ° peel strength after holding at 80 ° C. for 10 days is 300 g / cm or more, preferably 400 g / cm or more. It is desirable to use. As the method for forming the pressure-sensitive adhesive layer, specifically, the above rubbers or low polymerization degree resins are selected from halogen series, alcohol series, ketone series, ester series, ether series, aliphatic hydrocarbon series or aromatic hydrocarbon series. Dispersed or dissolved in a solvent system selected or mixed in multiple solvent systems to adjust viscosity, and then dipping method, flow coating method, spraying method, bar coating method, gravure coating method, roll coating method, blade coating method and air Knife
The coating is performed by a known coating method such as a coating method, and then the solvent is dried to form an adhesive layer.

The thickness of the pressure-sensitive adhesive layer at this time is usually 5 to 1
The thickness is 00 μm, preferably 10 to 50 μm. It is also possible to provide a release film on the surface of the pressure-sensitive adhesive layer and protect the pressure-sensitive adhesive layer until it is attached to the surface of the plasma display so that dust and the like do not adhere to the pressure-sensitive adhesive layer. In this case, between the pressure-sensitive adhesive layer at the edge of the filter and the peeling film, a part without a pressure-sensitive adhesive layer is formed, or a non-tacky film is sandwiched to form a non-tacky part, and peeling is started. If it is a part, it will be easier to work when attaching. When attaching a filter to the plasma display, if air bubbles enter between the surface of the plasma display and the filter, the image will be distorted and it will be difficult to see, etc. There is a need to.

The display filter of the present invention may be directly attached to the display surface as described above, but it may be further attached to a transparent glass or transparent resin plate in advance and then attached to the display surface. The display to which the filter may be attached is a display device known as a display device for color images such as a cathode ray tube, a fluorescent display tube, a field emission, a plasma panel, a liquid crystal, and an electroluminescence, and a bandpass filter. Therefore, any display device requiring color correction can be used, and a publicly known or commercially available plasma display panel is particularly preferable.

The plasma display panel display device is a device for displaying a color image based on the following principle. A display electrode pair is provided between the front glass plate and the rear glass plate, and each pixel (R
(Red), G (green), B (blue) corresponding cells are provided,
Xenon gas or neon gas is sealed in the cell, and a phosphor corresponding to each pixel is applied on the back glass plate side in the cell. Due to the discharge between the display electrodes, xenon gas and neon gas in the cell are excited to emit light and ultraviolet rays are generated. By irradiating the phosphor with this ultraviolet ray, visible light corresponding to each pixel is generated. An address electrode is provided on the back glass plate, and a signal is applied to the address electrode to control which discharge cell is to be displayed and to display a color image.

[0102]

The embodiments of the present invention will be described below with reference to examples. Example 1 A polyethylene terephthalate film (PET film “T 100E” manufactured by Mitsubishi Kagaku Polyester Film Co., Ltd., thickness 100 μm) was added to 0.63% DME (dimethoxyethane) of a squarylium compound of III-5 in the general formula (III). Solution 0.36 g, acrylic resin Optrez OZ-5000 (Tg = 130 ° C., birefringence = 2n
m; Hitachi Chemical Co., Ltd.) 3% of 20% DME solution was mixed and dissolved, coated with a bar coater (NO.24; manufactured by Eto Kikai Co., Ltd.) and dried to form a coating layer having a film thickness of 6 μm. A neon emission cut filter having the above was obtained.

The transmittance of this filter was measured with a Hitachi spectrophotometer (U-3500). The wavelength at the minimum value of the transmittance was 579 nm, and the transmittance was 18.7%. 5
There was no minimum value of transmittance other than the minimum value of 79 nm, and a filter having good transmittance was obtained. The above neon emission cut filter was put in a constant temperature bath at 100 ° C. for 100 hours to perform a heat resistance test, and a Hitachi spectrophotometer (U-350 was used.
When the residual dye ratio (%) was measured by the absorbance of 0), 98.
It was 9%, showing very good heat resistance.

On the surface of the polyethylene terephthalate resin opposite to the surface of the squarylium compound-containing layer of the above coating film, 2- (2'-hydroxy-3 ',
0.36 g of a 0.63% cyclohexanone solution of 5'-di-t-butylphenyl) benzotriazole and 3 g of a 20% cyclohexanone solution of a polyethylene terephthalate resin (Vylon 200; manufactured by Toyobo Co., Ltd.) were mixed, and a bar coater was used. After coating and drying, a coating film having a thickness of 6 μm was obtained (ultraviolet absorbing layer laminated film). The wavelength at 50% transmittance of this ultraviolet absorbing layer was 390 nm.

The light resistance was evaluated by exposing from the surface of the ultraviolet absorbing layer with a xenon fade meter (FAL-25AX-HC.B.EC manufactured by Suga Test Instruments Co., Ltd.) (280 hr exposure). When the residual dye ratio (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500), it was 82.4%, showing good light resistance. Comparative Example 1 20 of acrylic resin OZ-5000 used in Example 1
% DME solution 3 g instead of acrylic resin DIALAL BR-83 (Tg = 105 ° C .; Mitsubishi Rayon Co., Ltd.)
3% of a 20% dimethoxyethane solution (manufactured by Mitsui Chemical Co., Ltd.) was used, and the other treatments were performed in the same manner to obtain a coating film having a wavelength of 576 nm at the minimum transmittance.

On the surface of the polyethylene terephthalate resin opposite to the surface of the squarylium compound-containing layer of the coating film of Example 1, 2- (2'-hydroxy-3 'was formed.
, 5'-Di-t-butylphenyl) benzotriazole 0.63% cyclohexanone solution 0.36 g, and a polyethylene terephthalate resin (Vylon 200; Toyobo Co., Ltd.) 20% cyclohexanone solution 3 g are mixed, and a bar coater is mixed. Was coated and dried to obtain a coating film having a thickness of 6 μm (ultraviolet absorbing layer laminated film).

The light resistance was evaluated by exposing from the surface of the ultraviolet absorbing layer with a xenon fade meter (FAL-25AX-HC.B.EC manufactured by Suga Test Instruments Co., Ltd.) (280 hr exposure). When the residual dye ratio (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500), it was 66.6%, and the light resistance was poor. Example 2 The squarylium compound III-5 used in Example 1,
Instead of 0.36 g of a 63% dimethoxyethane solution, a 0.33% DME (dimethoxyethane) solution of a squarylium compound of III-20 in the general formula (III) 0.3
6 g was used, and instead of 3 g of a 20% DME solution of the acrylic resin Optretz OZ-5000 used in Example 1, the acrylic resin Optretz OZ-1100 (Tg
= 120 ° C., birefringence = 2 nm; manufactured by Hitachi Chemical Co., Ltd. 2
3 g of 0% dimethoxyethane solution was treated in the same manner to obtain a neon emission cut filter.

The transmittance of this filter was measured with a Hitachi spectrophotometer (U-3500). The wavelength at the minimum value of transmittance was 593 nm, and the transmittance was 19.4%. 5
There was no minimum value of transmittance other than the minimum value of 93 nm, and a filter having good transmittance was obtained. The above neon emission cut filter was put in a constant temperature bath at 100 ° C. for 100 hours to perform a heat resistance test, and a Hitachi spectrophotometer (U-350 was used.
When the residual dye ratio (%) was measured by the absorbance of 0), 98.
It was 6%, showing very good heat resistance.

An ultraviolet cut filter SC-39 (manufactured by Fuji Photo Film Co., Ltd.) was laminated on the side opposite to the surface of the squarylium compound-containing layer of the above coating film,
Xenon fade meter (Suga Test Instruments Co., Ltd. FAL-
(25AX-HC.B.EC) was used to evaluate the light resistance by exposing from the ultraviolet cut layer side (280 hr exposure). When the residual dye ratio (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500), it was 85.0%, indicating good light resistance.

Comparative Example 2 Acrylic resin Optrez OZ-1 used in Example 2
Instead of 3 g of 100% 20% DME solution, acrylic resin (BR-83, Tg = 105 ° C .; Mitsubishi Rayon Co., Ltd.)
3% of a 20% dimethoxyethane solution (manufactured by K.K.) was used and the same treatment was carried out in the same manner to obtain a coating film having a wavelength of 591 nm at the minimum transmittance.

An ultraviolet cut filter SC-39 (manufactured by Fuji Photo Film Co., Ltd.) was laminated on the side opposite to the surface of the squarylium compound-containing layer of the above coating film,
Xenon fade meter (Suga Test Instruments Co., Ltd. FAL-
(25AX-HC.B.EC) was used to evaluate the light resistance by exposing from the ultraviolet cut layer side (280 hr exposure). When the dye residual rate (%) was measured by the absorbance of Hitachi spectrophotometer (U-3500), it was 65.9%, and the light resistance was poor.

Example 3 The squarylium compound III-5 used in Example 1
Instead of 0.36 g of a 63% DME (dimethoxyethane) solution, a 0.25% dimethoxyethane solution of a squarylium-based compound which is VI-3 in the general formula (VI) 0.3
The same procedure as in Example 1 was carried out except that 6 g was used to obtain a neon emission cut filter having a coating layer.

The transmittance of this filter was measured with a Hitachi spectrophotometer (U-3500). The wavelength at the minimum value of transmittance was 496 nm. There was no minimum value of transmittance other than the minimum value of 496 nm, and a filter having good transmittance was obtained. 10 neon emission cut filters above
Put it in a constant temperature bath at 0 ℃ for 100 hours to test the heat resistance,
When the residual dye ratio (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500), it was 95.5%, showing very good heat resistance.

An ultraviolet cut filter SC-39 (manufactured by Fuji Photo Film Co., Ltd.) was laminated on the side opposite to the surface of the squarylium compound-containing layer of the above coating film,
Xenon fade meter (Suga Test Instruments Co., Ltd. FAL-
(25AX-HC.B.EC) was used to evaluate the light resistance by exposing from the ultraviolet cut layer side (280 hr exposure). When the residual dye ratio (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500), it was 90.7%, indicating good light resistance. Comparative Example 3 Acrylic resin Optrez OZ-1 used in Example 3
Instead of 3 g of 100% 20% DME solution, 3 g of 10% dimethoxyethane solution of acrylic resin Dianal BR-83 (Tg = 105 ° C .; manufactured by Mitsubishi Rayon Co., Ltd.) was used. Thus, a coating film having a wavelength of 494 nm at the minimum transmittance was obtained.

An ultraviolet cut filter SC-39 (manufactured by Fuji Photo Film Co., Ltd.) was laminated on the side opposite to the surface of the squarylium compound-containing layer of the above coating film,
Xenon fade meter (Suga Test Instruments Co., Ltd. FAL-
(25AX-HC.B.EC) was used to evaluate the light resistance by exposing from the ultraviolet cut layer side (280 hr exposure). When the residual dye ratio (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500), it was 71.4%, and the light resistance was poor. Example 4 5.0% TH of near-infrared absorbing dye represented by the following formula (VI-1)
0.1 g of F (tetrahydrofuran) solution, 20.0% solution of acrylic resin Optretz OZ-5000 (Tg = 130 ° C., birefringence = 2 nm; Hitachi Chemical Co., Ltd.) (toluene / THF = 1/1 ( (wt ratio)) 1.5g is mixed and dissolved, and coated on a polyethylene terephthalate film (PET film “T 100E” manufactured by Mitsubishi Kagaku Polyester Film Co., Ltd., thickness 100 μm) with a bar coater (NO.24; manufactured by Eto Kikai Co., Ltd.). It was worked and dried to obtain a near infrared absorption filter.

[0116]

[Chemical 29]

The near-infrared absorption of this film was measured by Hitachi spectrophotometer U-3500, and λmax was 84.
It was 0 nm. Furthermore, this film is covered with a UV cut filter (acryprene) made by Mitsubishi Rayon, and a xenon long life fade meter (FAL-25AX is used.
-HCB-EC) (product of Suga Test Instruments Co., Ltd.), 280
After irradiation for a period of time and measuring the absorption intensity before and after irradiation at 840 nm, the intensity after irradiation was 9 times the intensity before irradiation.
It was 4.4%, and it was confirmed that the light resistance was high.

Further, this film was put in a constant temperature bath at 100 ° C. for 100 hours to conduct a heat resistance test, and the residual dye ratio (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500). It was 0.0%, showing good heat resistance, and was good in both light resistance and heat resistance. Comparative Example 4 5 wt% T of the near infrared absorbing dye represented by the above formula (IV-1)
To 0.06 g of the HF solution, a THF / toluene (= 1/1) solution (resin concentration 20% by weight) of an acrylic resin (trade name; Dianal BR-80: Tg = 105 ° C., product of Mitsubishi Rayon Co., Ltd.) is added. After adding 1.5 g and completely dissolving with an ultrasonic cleaner, apply this coating liquid to a bar coater #
24 Polyethylene terephthalate film (PET film “T 100E manufactured by Mitsubishi Kagaku Polyester Film Co., Ltd.
, And a thickness of 100 μm), and dried to obtain a near-infrared absorbing film.

The near infrared absorption of this film was measured by Hitachi spectrophotometer U-3500. As a result, λmax was 8
It was 35 nm. The coating film was put in a constant temperature bath at 100 ° C. for 100 hours to perform a heat resistance test, and the dye residual rate (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500), and it was 83.8%. The heat resistance was inferior. Example 5 0.36 g of a 0.63% DME (dimethoxyethane) solution of the squarylium compound (III-5) used in Example 1
In the general formula (V) instead of NO. Using 0.9 g of a 0.63% DME (dimethoxyethane) solution of a tetraazaporphyrin compound that is V-2, 20% DM of acrylic resin Optretz OZ-5000 of Example 1 was used.
Instead of 3 g of E (dimethoxyethane) solution, acrylic resin Optrez OZ-1100 (Tg = 120
℃, birefringence = 2nm; Hitachi Chemical Co., Ltd. 20% D
3 g of ME (dimethoxyethane) solution was used, and the other treatments were performed in the same manner to obtain a neon emission cut filter having a coating layer. The transmittance of this filter was measured with a Hitachi spectrophotometer (U-3500). The wavelength at the minimum value of transmittance was 583 nm, and other than this, there was no minimum value of transmittance, and a filter having good transmittance was obtained. The above neon emission cut filter was put in a constant temperature bath at 100 ° C. for 100 hours to perform a heat resistance test, and the dye residual rate (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500). Yes, it showed very good heat resistance. An ultraviolet cut filter SC-39 (manufactured by Fuji Photo Film Co., Ltd.) was laminated on the side opposite to the tetraazaporphyrin compound-containing layer surface of the above coating film, and a xenon fade meter (manufactured by Suga Test Instruments Co., Ltd.) was laminated.
FAL-25AX-HC.B.EC) was used to evaluate the light resistance by exposing from the ultraviolet cut layer side (280 hr exposure). When the residual dye ratio (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500), it was 91.1%, showing good light resistance. Comparative Example 5 Acrylic resin Optretz OZ-1100 of Example 5
3 g of 20% DME (dimethoxyethane) solution of acrylic resin (BR-80, Tg = 105 ° C; Mitsubishi Rayon Co., Ltd.) was used in place of 3 g of 20% DME (dimethoxymethane) solution of The same treatment was performed to obtain a coating film having a wavelength of 583 nm at the minimum transmittance. An ultraviolet cut filter SC-39 (manufactured by Fuji Photo Film Co., Ltd.) was laminated on the side opposite to the tetraazaporphyrin compound-containing layer surface of the above coating film, and a xenon fade meter (manufactured by Suga Test Instruments Co., Ltd.) was laminated.
FAL-25AX-HC.B.EC) was used to evaluate the light resistance by exposing from the ultraviolet cut layer side (280 hr exposure). When the residual dye ratio (%) was measured by the absorbance of a Hitachi spectrophotometer (U-3500), it was 84.7%, which was inferior to the light resistance of Example 5.

[0120]

The display filter having a layer containing a specific acrylic resin and a dye of the present invention has excellent durability such as heat resistance and light resistance.

Continued front page    F-term (reference) 2H048 CA04 CA09 CA12 CA14 CA19                       CA24 CA27                 4H056 EA12 FA05

Claims (10)

[Claims] 1. A display filter having a layer containing an acrylic resin and a dye, wherein the acrylic resin is mainly composed of a resin having a glass transition point (Tg) of 110 ° C. or higher. A filter for displays characterized by. 2. A display filter having a layer containing an acrylic resin and a dye, wherein the acrylic resin has the following general formula (I): (In the formula (I), R ₁ represents a hydrogen atom or an alkyl group, and R ₂ represents a polycyclic alicyclic ring), which is a resin containing a constitutional unit. Filter for. 3. A dye having the following general formula (II): [In formula (II), A and B are each independently an aryl group which may have a substituent, a heterocyclic group which may have a substituent, or CH = D (provided that D Represents a heterocyclic group which may have a substituent). ] It is a squarylium-type compound represented by these, The filter for displays of Claim 1 or 2 characterized by the above-mentioned. 4. A squarylium compound is represented by the following general formula (III): [In the formula (III), R ₃ is a halogen atom, an alkyl group which may have a substituent, an alkoxy group which may have a substituent, or —NH—X—R ₄ (X is CO. or an SO _2, R ₄ represents a representative.) an organic residue, if R ₃ is more present, each R ₃ may be the same or different.
m represents an integer of 1 to 4 and n represents an integer of 0 to 4. ] It is a squarylium-type compound represented by these, The filter for displays of Claim 3 characterized by the above-mentioned. 5. The display filter according to claim 3, wherein the squarylium compound is a pyrazole group in which A and B in the general formula (II) may have a substituent. 6. A dye having the following general formula (IV): [Chemical 4] (In the formula, M is Ni, Pd, Pt, Co, Fe, Ti, S
represents n or Cu. Y ₁ ~ Y₈ Each independently water
Elementary atom, optionally substituted alkyl group, substituent
May have an aryl group, may have a substituent
Good aralkyl group, optionally substituted alkoxy group
Si group, aryloxy group, nitro group, halogen atom,
Represents a mino group, a substituted amino group or a cyano group, and X₁ ~
X_TenAre each independently a hydrogen atom, a halogen atom,
Lucoxy group, aryloxy group, nitro group, cyano group,
Optionally substituted alkyl group, having a substituent
An optionally substituted aryl group or an optionally substituted ara group
Represents a rukyl group. ) Is a metal complex represented by
Display according to any one of claims 1 to 5
Filter for. 7. The dye has the following general formula (V): [In Formula (V), G ^{1 to} G ⁸ are each independently a hydrogen atom, a halogen atom, a nitro group, a cyano group, a hydroxy group, an amino group, an alkyl group which may have a substituent, or a substituent. An alkoxy group which may have an aryl group which may have a substituent, an aryloxy group which may have a substituent, an alkylamino group which may have a substituent,
Represents a dialkylamino group which may have a substituent, an alkylthio group which may have a substituent, or an arylthio group which may have a substituent, and G ¹ and G ² ,
G ³ and G ⁴ , G ⁵ and G ⁶ , and G ⁷ and G ⁸ may be connected to each other to form an aliphatic carbocycle. M ′ represents two hydrogen atoms, a divalent metal atom, a trivalent monosubstituted metal atom, a tetravalent disubstituted metal atom or an oxy metal atom. ] It is a tetraazaporphyrin type compound represented by these, The 1st item characterized by the above-mentioned.
6. The display filter according to any one of 6. 8. A display filter comprising the display filter according to claim 1 and a layer further containing an ultraviolet absorber. 9. A filter for a phosphor-emission type display panel, comprising the display filter according to claim 1. 10. A filter for a plasma display panel, comprising the filter for a display according to claim 1.