JP6264903B2 - Blue coloring composition for organic EL display device, color filter, and organic EL display device - Google Patents

Description

  The present invention relates to a blue coloring composition for an organic EL display device, a color filter, preferably used for a color display device using a white light-emitting organic EL (electroluminescence) element (hereinafter sometimes referred to as “organic EL element”). And a color display device. White means a broad concept including pseudo white.

  Examples of color display devices using color filters include (i) a backlight as a light source, a liquid crystal as an optical shutter, and a combination of color filters having color adjustment functions (color conversion function, color separation function, color correction function, etc.) And (ii) a synthetic white organic EL light source, and an organic EL display device comprising a combination of color filters having a color adjustment function (color conversion function, color separation function, color correction function, etc.).

  Currently, liquid crystal displays (i) are the mainstream for flat panel displays. Due to the advantages of low power consumption and space saving, there are various types of monitors such as personal computer monitors, mobile phone displays, notebook personal computers, and personal digital assistants. In recent years, it has been used for liquid crystal televisions instead of conventional CRT televisions. For LCD TV applications, color reproducibility is important. The color reproducibility of the color liquid crystal display device is determined by the color of light emitted from the red, green, and blue filter segments, and the chromaticity points of the respective filter segments are (xR, yR), (xG, yG), When (xB, yB), the standard three primary colors, red, evaluated by the area of the triangle surrounded by these three points on the xy chromaticity diagram and defined by the US National Television System Committee (NTSC) (0.67, 0.33), ratio to the area surrounded by green (0.21, 0.71), blue (0.14, 0.08) (unit:%, hereinafter abbreviated as NTSC ratio) Expressed. This value is 40 to 100% for a general notebook computer, 50 to 100% for a monitor for a personal computer, and 70% to 100% for a liquid crystal television.

  As the backlight in the liquid crystal display device of (i), a cold cathode tube type backlight, a two-wavelength peak pseudo-white backlight and a three-wavelength peak backlight using a light emitting diode or an organic EL element using an inorganic material. and so on. In the liquid crystal display device, a liquid crystal layer sandwiched between two polarizing plates controls the amount of light passing through the first polarizing plate by controlling the degree of polarization of light passing through the first polarizing plate. The VA mode, the IPS mode, etc., and the type using a TN (twisted nematic) mode type liquid crystal is the mainstream. However, these liquid crystal display devices have a problem that energy is wasted because the backlight unit continues to emit the same light as white display even in black display.

  As the synthetic white light source of the organic EL display device of (ii), there are a light source having a two-wavelength peak, a light source having a three-wavelength peak, and a light source having a large number of peaks in the visible light region. Synthetic white light is obtained by mixing or layering.

  Since the organic EL display device can directly turn on / off the light source of the pixel by a TFT (thin film transistor) or the like, it is possible to perform black display by turning off the light emission of the designated pixel. Therefore, the deflecting plate used in the liquid crystal display device is not required in the light emitting device, and it is not necessary to control the liquid crystal body. For this reason, the amount of transmitted light in the display device increases, and energy consumption can be greatly reduced by turning off the light emitting device in black display. In addition, it is possible to reproduce true dark black, and the contrast ratio can be increased. As an organic EL color display device in which the problems in the liquid crystal display device are solved, for example, a product such as “XEL-1” manufactured by SONY is already on the market. (For example, see Patent Document 1)

  However, a light emitting device using such an organic EL element has a light emission spectrum different from that of a conventionally used light source. For example, a conventional light source has a peak in the vicinity of 420 to 430 nm, but a light source using an organic EL element has no peak in the vicinity of 420 to 430 nm due to the characteristics of the material, and has a peak in the vicinity of 460 nm. In addition, the emission spectrum of the light source using the organic EL element has a broad peak as compared with the conventional light source, and therefore, even after passing the peak around 460 nm, the conventional light source reaches about 500 nm. The spectrum is higher. For these reasons, currently used color filters cannot be used as they are in display devices using light sources using organic EL elements. For this reason, it is necessary to select and develop a color filter material that can be used for a light source using an organic EL element and has an optimum hue and transmittance characteristics.

  An organic EL display device having such a light source is also required to have a high NTSC ratio, as in a liquid crystal display device. In order to increase the NTSC ratio, it is necessary to increase the color purity of each filter segment. However, if the color purity is increased, the light use efficiency (represented by the brightness Y value) of the light source is decreased. There is a problem that increases.

  In an organic EL display device, a phthalocyanine pigment that is generally excellent in resistance and color tone is often used as a coloring composition that is conventionally used for forming a blue filter segment. As this phthalocyanine pigment, those having various central metals such as copper, zinc, nickel, cobalt, and aluminum are known. Among them, copper phthalocyanine is widely used because it has the clearest color tone, but other metal phthalocyanines such as metal-free phthalocyanine, zinc phthalocyanine, and cobalt phthalocyanine other than copper phthalocyanine have been put into practical use. In addition, phthalocyanine pigments have different crystal types such as α-type, β-type, δ-type, and ε-type, and each has excellent properties such as clearness and high coloring power. Yes. In the conventional color filter, these copper phthalocyanine pigments are dioxazine pigments C.I. I. In combination with Pigment Violet 23 and the like, a wide color display area could be achieved.

  In recent years, a technique of using a dye as a colorant has been proposed, as in Patent Document 2, in order to realize a high brightness that cannot be achieved with a pigment. However, as described in, for example, Patent Document 3, dye characteristics tend to be inferior in fastness such as heat resistance and light resistance as compared with pigments. So far, solutions have been studied as in Patent Documents 4 and 5, but there are disadvantages such as poor solvent resistance necessary for adapting as a color filter and incompatibility as a member.

Japanese Patent Laid-Open No. 2005-10091 JP-A-6-75375 JP-A-8-327811 JP2012-098522A JP 2012-173399 A

  The colored composition of the present invention can provide a color filter satisfying two characteristics of high brightness and high purity in an organic EL display device using a white light-emitting organic EL element as a light source. It is another object of the present invention to provide a color display device capable of achieving the quality required as a color filter for organic EL display devices such as a high NTSC ratio.

  As a result of intensive studies to solve the above problems in consideration of the above problems, the present inventors have found that a triarylmethane basic dye and a compound in which the anion moiety is a sulfate group represented by the general formula (1) In the case where a light-emitting device using a white light-emitting organic EL element as a light source is used as a backlight, it has been found that a high brightness and a wide color reproduction region are possible. It was made.

That is, the present invention provides a colorant, a binder resin, a photopolymerizable monomer, and a photopolymerization initiator containing a salt-forming compound of a triarylmethane basic dye and a counter compound (A) having an anionic group. A blue coloring composition for an organic EL display device, wherein the anion portion of the counter compound (A) is a sulfate group represented by the following general formula (1). The present invention relates to a blue coloring composition.

In addition, the present invention has peak wavelengths (λ ₁ ) and (λ ₂ ) at which the emission intensity is maximized in at least the wavelength range of 430 nm to 485 nm and the wavelength range of 560 nm to 620 nm, and the emission intensity I at the wavelength λ ₁ . XYZ of the colored film measured using a white organic EL light source having an emission spectrum in which the ratio (I ₂ / I ₁ ) of the emission intensity I ₂ at ₁ and the wavelength λ ₂ is 0.4 or more and 0.9 or less When the chromaticity coordinates in the color system satisfy x ≦ 0.160 and y ≦ 0.100, the thickness of the colored film is less than 3.5 μm. The present invention relates to a coloring composition.

  In the present invention, the counter compound (A) has a sulfate ester having a sulfate group represented by the general formula (1) or a metal salt thereof (a1), or a sulfate group represented by the general formula (1). It is resin (a2) which has in a chain | strand, It is related with the said blue coloring composition for organic EL display apparatuses characterized by the above-mentioned.

The blue colored composition for an organic EL display device, wherein the sulfate ester having a sulfate group represented by the general formula (1) or a metal salt thereof (a1) is a compound represented by the general formula (11) About.

[In General Formula (11), R represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted alkenyl group, and M ⁺ each independently represents a hydrogen ion or a metal ion. n represents an integer of 1 to 4. ]

In addition, the present invention provides an ethylenically unsaturated monomer (a1-1) in which the sulfate ester having a sulfate group represented by the general formula (1) or a metal salt thereof (a1) is represented by the general formula (21). It is related with the said blue coloring composition for organic electroluminescent display devices characterized by these.

[In General Formula (21), R ¹ represents a hydrogen atom or a methyl group.
R ² represents a single bond or a divalent linking group,
A represents the general formula (22), and Y ₂ ⁺ represents an inorganic or organic cation. ]

[In General Formula (22), R ⁴ represents an alkylene group which may have a substituent, and n is an integer of 1 to 20. ]

  The present invention also relates to the blue coloring composition for an organic EL display device, wherein the colorant further contains a xanthene dye.

  In the organic EL display according to the invention, the xanthene-based dye contains at least one selected from the group consisting of a salt-forming compound of a xanthene-based acid dye and a sulfonic acid amide compound of a xanthene-based acid dye. It is related with the blue coloring composition for apparatuses.

  In the present invention, the xanthene acid dye is C.I. I. Acid Red 52, C.I. I. Acid Red 87, C.I. I. Acid Red 92, C.I. I. Acid Red 289, and C.I. I. The present invention relates to the blue coloring composition for an organic EL display device, which is at least one selected from the group consisting of Acid Red 388.

  The present invention also relates to the blue coloring composition for an organic EL display device, wherein the colorant further contains a blue pigment.

  The present invention also relates to the blue coloring composition for an organic EL display device, wherein the colorant further contains a violet pigment.

  The present invention also provides a color filter for an organic EL display device comprising at least one red filter segment, at least one green filter segment, and at least one blue filter segment, wherein at least one blue filter segment is the organic EL display device. The present invention relates to a color filter for an organic EL display device formed of a blue coloring composition.

In addition, the present invention has peak wavelengths (λ ₁ ) and (λ ₂ ) at which the emission intensity is maximized in the wavelength range of 430 nm to 485 nm and the wavelength range of 560 nm to 620 nm, and the emission intensity I _{1 at the} wavelength λ ₁ . XYZ color of the colored film when a white organic EL light source having a spectral characteristic in which the ratio (I ₂ / I ₁ ) of the emission intensity I _{2 at} the wavelength λ ₂ is 0.4 or more and 0.9 or less is used. When the chromaticity coordinates in the system are (xR, yR), (xG, yG), and (xB, yB), the area of the triangle surrounded by these three points is red (0.67, 0.33). In addition, the present invention relates to the color filter for an organic EL display device, characterized by being 75% or more with respect to an area surrounded by green (0.21, 0.71) and blue (0.14, 0.08).

  The present invention also relates to an organic EL display device comprising the color filter for an organic EL display device and a white organic EL light source.

In the present invention, the white organic EL light source has peak wavelengths (λ ₁ ) and (λ ₂ ) at which the emission intensity becomes maximum in at least a wavelength range of 430 nm to 485 nm and a wavelength range of 560 nm to 620 nm. the ratio of the emission intensity _{I 2} in the light-emitting intensity _{I 1} and the wavelength lambda ₂ in lambda _{1 (I} 2 / _{I 1)} is, the organic EL display characterized by having the emission spectrum is 0.4 to 0.9 Relates to the device.

  The blue coloring composition for an organic EL display device of the present invention contains a salt-forming compound of a triarylmethane basic dye and a counter compound (A) having an anionic group as a colorant. When the anion portion is a sulfate group represented by the following general formula (1), a high brightness and a wide color reproduction region are possible when a light emitting device using a white light emitting organic EL element as a light source is used as a backlight. Become.

It is an example of the emission spectrum of a white organic EL light source (EL-1).

Hereinafter, the present invention will be described in detail.
In the present application, when “(meth) acryloyl”, “(meth) acryl”, “(meth) acrylic acid”, “(meth) acrylate”, or “(meth) acrylamide” is particularly described, Unless otherwise indicated, “acryloyl and / or methacryloyl”, “acrylic and / or methacrylic”, “acrylic acid and / or methacrylic acid”, “acrylate and / or methacrylate”, or “acrylamide and / or methacrylamide”, respectively. It shall represent.
Further, “CI” mentioned in the present specification means a color index (CI).

<Blue coloring composition>
First, the blue coloring composition for organic EL display devices of the present invention will be described.
The blue coloring composition of the present invention includes a colorant, a binder resin, a photopolymerizable monomer, and photopolymerization containing a salt-forming compound of a triarylmethane basic dye and a counter compound (A) having an anionic group. A blue-colored composition for an organic EL display device containing an initiator, wherein the anion portion of the counter compound (A) is a sulfate group represented by the following general formula (1), particularly white It is preferably used for a color filter of a color display device having an organic EL light source.

  First, other components such as a colorant, a binder resin, a photopolymerizable monomer, a photopolymerization initiator, a solvent used as necessary, a dispersibility improver, and a dispersion aid used in the blue coloring composition are sequentially described. To do.

<Colorant>
The coloring composition of the present invention contains a salt-forming compound of a triarylmethane basic dye and a counter compound (A) having an anionic group as a colorant, and the anion portion of the counter compound (A) is represented by the following general formula By being a sulfate group represented by the formula (1), the solubility in an organic solvent is good, and the fastness such as heat resistance is also excellent. Further, when a light emitting device using a white light emitting organic EL element as a light source is used as a backlight, high brightness and a wide color reproduction region are possible.
In addition to the salt-forming compound, the other colorant may further include a xanthene dye, a blue pigment, or a violet pigment. By including a xanthene dye, high brightness and wide color reproducibility are possible. By including a blue pigment and a purple pigment, the chromaticity range can be expanded and the resistance can be improved.

  When other colorants are contained, the content of other colorants is preferably 1 to 300 parts by weight with respect to 100 parts by weight of the salt-forming compound. More preferably, it is 25-200 weight part, More preferably, it is 50-100 weight part. When the amount of the other colorant added is 1 part by weight or more and 300 parts by weight or less, the reproducible chromaticity region is widened, which is preferable.

《Salt-forming compound》
The salt-forming compound is a salt-forming compound comprising a triarylmethane basic dye and a counter compound (A) having an anionic group. In such a salt-forming compound, the anion portion of the counter compound (A) is a sulfate group represented by the following general formula (1), so that the heat resistance and light resistance are good, and the color has a high brightness. It can be a filter.

  Such a triarylmethane basic dye and the counter compound (A) can react by dissolving both in an aqueous solution, an alcohol solution, or the like to obtain a salt-forming compound. Or it is also possible to obtain by melt-kneading both, heating.

[Triarylmethane basic dye]
The triarylmethane-based basic dye develops color when the NH ₂ or OH group located in the para position with respect to the central carbon takes a quinone structure by oxidation.
Depending on the number of NH ₂ and OH groups, it can be divided into the following three types. Among them, a triaminoarylmethane-based basic dye is preferable because it produces a good blue color.
a) Diaminotriarylmethane basic dye b) Triaminotriarylmethane basic dye c) Rosolic acid basic dye having an OH group Triaminotriarylmethane basic dye, diaminotriarylmethane basic The dye has a vivid color tone and is preferable because it is more excellent in fastness to sunlight than other dyes.

  Since the blue triarylmethane basic dye has a spectral characteristic having a high transmittance at 400 to 440 nm, it can have a high brightness particularly when used for forming a blue filter segment. This is preferable because it is possible.

Specific examples of preferred triarylmethane-based basic dyes include, but are not limited to, compounds represented by the following general formula (51).

In General Formula (51), R1A to R1F each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted aryl group.
R2A and R3A each independently represents a hydrogen atom, a methyl group, or an ethyl group.
Y ₁ ^- is an organic or inorganic anion capable of salt exchange with a counter compound.

  Examples of the alkyl group in R1A to R1F and R include a linear, branched, monocyclic or condensed polycyclic alkyl group having 1 to 30 carbon atoms, or one or more ester bonds (- And a linear, branched, monocyclic or condensed polycyclic alkyl group containing (COO-) and / or an ether bond (-O-). Specific examples of the linear, branched, monocyclic or condensed polycyclic alkyl group having 1 to 30 carbon atoms include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group. Group, nonyl group, decyl group, dodecyl group, octadecyl group, trifluoromethyl group, isopropyl group, isobutyl group, isopentyl group, 2-ethylhexyl group, sec-butyl group, tert-butyl group, sec-pentyl group, tert- A pentyl group, a tert-octyl group, a neopentyl group, a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, an adamantyl group, a norbornyl group, a boronyl group, a 4-decylcyclohexyl group, and the like can be mentioned. It is not something.

Specific examples of the linear or branched alkyl group having 2 to 30 carbon atoms and containing one or more ester bonds include —CH ₂ —CH ₂ —CH ₂ —COO—CH ₂ —CH ₃ , —CH _{2 -CH (-CH 3) -CH 2} -COO-CH 2 -CH 3, -CH 2 -CH 2 -CH 2 -OCO-CH 2 -CH 3, -CH 2 -CH 2 -CH 2 -CH 2 _{-COO-CH 2 -CH (CH 2} -CH 3) -CH 2 -CH 2 -CH 2 -CH 3, - (CH 2) 5 -COO- (CH 2) 11 -CH 3, -CH 2 -CH _{2 -CH 2 -CH- (COO-CH} 2 -CH 3) can be exemplified _2, etc., but is not limited thereto.

Specific examples of the linear or branched alkyl group having 2 to 30 carbon atoms and containing one or more ether bonds include —CH ₂ —O—CH ₃ , —CH ₂ —CH ₂ —O—. CH ₂ —CH ₃ , —CH ₂ —CH ₂ —CH ₂ —O—CH ₂ —CH ₃ , — (CH ₂ —CH ₂ —O) _n —CH ₃ (where n is 1 to 8), _{- (CH 2 -CH 2 -CH 2} -O) m -CH 3 ( here m is 5 _{1), - CH 2 -CH (} CH 3) -O-CH 2 -CH 3 -, - CH _2- CH- (OCH ₃ ) _{2 and the} like can be mentioned, but are not limited thereto.

  Specific examples of the monocyclic or condensed polycyclic alkyl group having 2 to 30 carbon atoms and optionally including one or more ether bonds include the following, but are not limited thereto. Absent.

Furthermore, specific examples of linear, branched, and alkyl groups having 3 to 30 carbon atoms and including one or more ester bonds (—COO—) and ether bonds (—O—) include —CH ₂ — _{CH 2 -COO-CH 2 -CH 2} -O-CH 2 -CH (CH 2 -CH 3) -CH 2 -CH 2 -CH 2 -CH 3, -CH 2 -CH 2 -COO-CH 2 -CH _{2 -O-CH 2 -CH 2 -O} -CH 2 -CH (CH 2 -CH 3) can be exemplified _{-CH 2 -CH 2 -CH 2 -CH 3} , but the invention is not limited to .

  Examples of the alkenyl group in R1A to R1F and R include linear, branched, monocyclic or condensed polycyclic alkenyl groups having 1 to 18 carbon atoms. They may have a plurality of carbon-carbon double bonds in the structure. Specific examples include vinyl group, 1-propenyl group, allyl group, 2-butenyl group, 3-butenyl group, isopropenyl group, isobutenyl group, 1-pentenyl group, 2-pentenyl group, 3-pentenyl group, 4- Pentenyl group, 1-hexenyl group, 2-hexenyl group, 3-hexenyl group, 4-hexenyl group, 5-hexenyl group, cyclopentenyl group, cyclohexenyl group, 1,3-butadienyl group, cyclohexadienyl group, cyclopenta Although a dienyl group etc. can be mentioned, it is not limited to these.

  The aryl group in R1A to R1F is a monocyclic or condensed polycyclic aromatic group having 6 to 18 carbon atoms, and examples thereof include a phenyl group, a 1-naphthyl group, a 2-naphthyl group, a p-biphenyl group, m- Biphenyl group, 2-anthryl group, 9-anthryl group, 2-phenanthryl group, 3-phenanthryl group, 9-phenanthryl group, 2-fluorenyl group, 3-fluorenyl group, 9-fluorenyl group, 1-pyrenyl group, 2- Although a pyrenyl group, 3-perylenyl group, etc. can be mentioned, it is not limited to these.

  These alkyl groups, alkenyl groups in R1A to R1F and R, and aryl groups in R1A to R1F may have a substituent. Examples of such a substituent include an alkyl group, an alkenyl group, and an aryl group, and these are as defined above.

  R2A and R3A each independently represents a hydrogen atom, a methyl group, or an ethyl group.

  The position of the cation of the triarylmethane dye may be anywhere as long as a stable resonance structure can be obtained, and may be any nitrogen portion of the amine portion or the central carbon portion of the triarylmethane.

Y ₁ ^- is an organic or inorganic anion capable of salt exchange with the counter compound in the present invention.
Usually, it is preferably a halogen, such as chlorine, and the anion moiety is other than the sulfate group represented by the general formula (1).

  For example, the triarylmethane dye represented by the general formula (52) can be obtained by salt exchange between a corresponding triarylmethane basic dye and a specific sodium sulfate, potassium salt, ammonium salt or the like.

[Counter Compound (A)]
In the present invention, the counter compound as the anion component is not limited as long as the anion portion has a sulfate group represented by the following general formula (1). By having such a specific sulfate group, the solubility in an organic solvent is good and the heat resistance is excellent. Further, when a light emitting device using a white light emitting organic EL element as a light source is used as a backlight, high brightness and a wide color reproduction region are possible.

Among such counter compounds (A) having a sulfate group represented by the general formula (1), the anion moiety is represented by a sulfate ester, a metal salt (a1) thereof, or the general formula (1). The resin (a2) having a sulfate group in the side chain is preferable because of excellent resistance.
Among the sulfate esters or metal salts thereof, the aliphatic sulfuric acid represented by the general formula (11) or the general formula (12) is preferable, more preferably the aliphatic sulfuric acid represented by the general formula (11), or It is an ethylenically unsaturated monomer (a1-1) shown in General formula (21).

The molecular weight and average molecular weight defined in the present invention are expressed by theoretical values converted from atomic weights. The first decimal place was calculated as a significant figure, and the calculated value was rounded off to exclude the minority.
When the counter compound is used as a metal salt such as a sodium salt, the molecular weight is considered after replacing Na with H, for example.

(Sulfate ester or metal salt thereof (a1))
Among the compounds having a sulfate group represented by the general formula (1), a sulfate ester or a metal salt thereof is preferable from the viewpoints of hue, heat resistance, and solvent resistance. Further, it may be a salt such as an ammonium salt.
Of these, sulfates represented by general formula (11) or general formula (12) or metal salts thereof are preferred.
The aliphatic sulfuric acid represented by the general formula (11) or the general formula (12), or the aromatic sulfuric acid, that is, the aliphatic sulfuric acid ester or the aromatic sulfuric acid ester is preferable because of excellent color reproducibility. In addition, an ethylenically unsaturated monomer having a sulfate group represented by the ethylenically unsaturated monomer (a1-1) represented by the general formula (21) described later is also preferable in terms of heat resistance and solvent resistance. Can be used.

  In the case of a sulfate ester or a metal salt thereof, the preferred molecular weight range of the counter compound is 200 to 750, and the more preferred molecular weight range is 200 to 400. Even more preferably, it is in the range of 250-400. By setting the molecular weight within this range, it is possible to obtain a colorant having a good balance between resistance and coloring power, which is preferable.

{Sulfuric acid ester represented by general formula (11) or general formula (12), or a metal salt thereof}

[In General Formula (11), R represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted alkenyl group, and M ⁺ represents a hydrogen ion or a metal ion. n represents an integer of 1 to 4. ]

Specific examples of M include a hydrogen atom and an alkali metal. Examples of the alkali metal include sodium, potassium, lithium and the like.
When n is 2 or more, M may be the same or different.

[In General Formula (12), R represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted alkenyl group, and M ′ ^{m +} represents a metal ion. m represents an integer of 2 to 4. ]

  Specific examples of M ′ include alkaline earth metals and transition metals. Examples of the alkaline earth metal include calcium and magnesium, and examples of the transition metal include manganese and copper.

  Examples of the substituted or unsubstituted alkyl group in R include a linear, branched, monocyclic or condensed polycyclic alkyl group having 1 to 30 carbon atoms, or one or more ester bonds having 2 to 30 carbon atoms ( -COO-) and / or a linear, branched, monocyclic or condensed polycyclic alkyl group containing an ether bond (-O-).

  Specific examples of the linear, branched, monocyclic or condensed polycyclic alkyl group having 1 to 30 carbon atoms include octyl group, nonyl group, decyl group, dodecyl group, octadecyl group, 2-ethylhexyl group, tert- An octyl group, a 4-decylcyclohexyl group, and the like can be mentioned, but are not limited thereto.

Specific examples of the linear or branched alkyl group having 2 to 30 carbon atoms and including one or more ester bonds include —CH ₂ —CH ₂ —CH ₂ —COO—CH ₂ —CH ₃ , —CH _{2 -CH (-CH 3) -CH 2} -COO-CH 2 -CH 3, -CH 2 -CH 2 -CH 2 -OCO-CH 2 -CH 3, -CH 2 -CH 2 -CH 2 -CH 2 _{-COO-CH 2 -CH (CH 2} -CH 3) -CH 2 -CH 2 -CH 2 -CH 3, - (CH 2) 5 -COO- (CH 2) 11 -CH 3, -CH 2 -CH _{2 -CH 2 -CH- (COO-CH} 2 -CH 3) can be exemplified _2, etc., but is not limited thereto.

Specific examples of the linear or branched alkyl group having 2 to 30 carbon atoms and including one or more ether bonds include — (CH ₂ —CH ₂ —O) _t —CH ₃ (where t 3 from a _{8), -} (CH 2 is _{-CH 2 -CH 2 -O) p-} CH 3 ( where p is 2 to 5), but can be given, are limited to It is not a thing.

Specific examples of the monocyclic or condensed polycyclic alkyl group having 2 to 30 carbon atoms and optionally including one or more ether bonds include the following, but are not limited thereto. Absent.

Furthermore, specific examples of linear, branched, and alkyl groups having 3 to 30 carbon atoms and including one or more ester bonds (—COO—) and ether bonds (—O—) include —CH ₂ — _{CH 2 -COO-CH 2 -CH 2} -O-CH 2 -CH (CH 2 -CH 3) -CH 2 -CH 2 -CH 2 -CH 3, -CH 2 -CH 2 -COO-CH 2 -CH _2- O—CH ₂ —CH ₂ —O—CH ₂ —CH (CH ₂ —CH ₃ ) —CH ₂ —CH ₂ —CH ₂ —CH ₃ may be mentioned, but is not limited thereto. .

  Examples of the substituted or unsubstituted alkenyl group for R include linear, branched, monocyclic or condensed polycyclic alkenyl groups having 1 to 18 carbon atoms. They may have a plurality of carbon-carbon double bonds in the structure. Specific examples include 1-octenyl group, 2-octenyl group, 3-octenyl group, 4-octenyl group, 5-octenyl group, 6-octenyl group, 7-octenyl group, and the like. It is not limited.

{Ethylenically unsaturated monomer (a1-1) represented by general formula (21)}
As the ethylenically unsaturated monomer having a sulfate group represented by the general formula (1), it is possible to use the ethylenically unsaturated monomer (a1-1) represented by the following general formula (21). And preferred in terms of resistance.

[In General Formula (21), R ¹ represents a hydrogen atom or a methyl group.
R ² represents a single bond or a divalent linking group,
A represents the general formula (22), and Y ₂ ⁺ represents an inorganic or organic cation. ]

[In General Formula (22), R ⁴ represents an alkylene group which may have a substituent, and n is an integer of 1 to 20. ]

The R ² in the general formula (21), an optionally substituted alkylene group, an optionally substituted oxyalkylene group, an arylene group which may have a substituent, -CH ₂ - O—CH ₂ CH (R ³ ) O—, —CONH—R ⁵ —, —R ⁶ —O— or —COO—R ⁵ — is represented, and R ³ is a monovalent alkyl group having 1 to 30 carbon atoms. R ⁵ represents a single bond, an alkylene group that may have a substituent, an oxyalkylene group that may have a substituent, —A—R ⁶ —CH ₂ —R ⁶ —, or a substituent. has even arylene group, R ⁶ represents an arylene group which may have a substituent.

In the general formula (21), specific examples of the alkylene group which may have a substituent of R ² include a methylene group, an ethylene group, a propylene group, a butylene group, a trimethylene group, a tetramethylene group, a hexamethylene group, or , Octamethylene group, etc .;
In the general formula (21), specific examples of the oxyalkylene group which may have a substituent of R ² include oxymethylene group, oxyethylene group, oxypropylene group, oxybutylene group, oxytetramethylene group, oxyhexa A methylene group or an oxyoctamethylene group;
In the general formula (21), specific examples of the arylene group which may have a substituent of R ² include a phenyl group, a nonylphenyl group, a paracumylphenyl group, and the like;
In the general formula (21), specific examples of the monovalent alkyl group having 1 to 30 carbon atoms of R ³ include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, an octyl group, and a nonyl group. Decyl group or dodecyl group, etc .;
However, it is not limited to these.

The monovalent alkyl group having 1 to 30 carbon atoms of R ³ is preferably a monovalent alkyl group having 1 to 18 carbon atoms, and more preferably a monovalent alkyl group having 8 to 18 carbon atoms. The reason is that an alkyl group having a small number of carbon atoms adversely affects heat resistance. Further, in the case of an alkyl group having a large number of carbon atoms, there is a concern that it may adversely affect the solubility in preparing a resin or a dye salt product.

In general formula (21), as an alkylene group which may have a substituent of R ^5, an oxyalkylene group which may have a substituent, and an arylene group which may have a substituent, the general formula (21 The alkylene group, the oxyalkylene group, and the arylene group described for R ² in () are included, but are not limited thereto.

In general formula (21), examples of the arylene group which may have a substituent of R ⁶ include, but are not limited to, the arylene group described in R ² in general formula (21).

As R ² in the general formula (21), among them, —CH ₂ —O—CH ₂ CH (R ³ ) O— having a branched C 8-18 long chain alkyl group is polymerizable, It is preferable for reasons of availability and heat resistance.

In general formula (21), A represents general formula (22).
The ethylenically unsaturated monomer (a1-1) of the present invention is characterized in that A next to the sulfo group (SO ₃ ) is an alkylene oxide represented by the general formula (22) and has a sulfate group. To do. Usually, a resin having a carboxylic acid group or a sulfonic acid group is used, but the present inventors have found that a resin having a sulfuric acid group having a stronger acidity than a carboxy group or a sulfonic acid group is more than a carboxyl group or a sulfonic acid group. In particular, it was considered that salt formation was caused by a strong interaction with a basic dye to improve the heat resistance of the colored composition, and the present invention was achieved.

In the general formula (22), specific examples of the alkylene group that may have a substituent of R ⁴ include the alkylene groups described for R ³ in the general formula (1). The alkylene group preferably has 1 to 10 carbon atoms, more preferably 1 to 5 carbon atoms, and particularly preferably 2 or 3 carbon atoms.

  Moreover, n in General formula (22) is an integer of 1-20, it is preferable that n is an integer of 2-15, and it is more preferable that n is an integer of 5-10.

Component of Y ₂ ⁺ in the general formula (21) which constitutes the ethylenically unsaturated monomer represents inorganic or organic cation, can be a known adopted without limit. Specific examples of Y ₂ include hydrogen, alkali metals, alkaline earth metals, and ammonium compounds. At that time, the alkali metal is preferably sodium or potassium, and the alkaline earth metal is preferably calcium or magnesium. An ammonium compound is a compound in which NH ₄ ⁺ or H thereof is substituted with a hydrocarbon group or the like.

As an ethylenically unsaturated monomer (a1-1) shown by General formula (21), what is marketed may be used, what was synthesize | combined suitably,
As a specific example,
A commercially available product of Daiichi Kogyo Seiyaku Co., Ltd., aqualon KH-10, KH-1025, or polyoxyethylene-1- (allyloxymethyl) alkyl ether ammonium sulfate such as KH-05;
Polyoxyethylene nonylpropenyl phenyl ether ammonium sulfate such as HS-10, HS-1025, BC-10, BC-20;
A commercially available product manufactured by Sanyo Chemical Industries, Ltd., sodium polyoxyalkylene sulfate methacrylate such as Eleminol RS-3000;
Examples include commercially available products manufactured by Nippon Emulsifier Co., Ltd., bis (polyoxyethylene polycyclic phenyl ether) methacrylate sulfate ester salts such as Antox MS-60, and the like.

  These ethylenically unsaturated monomers (a1-1) represented by the general formula (21) may be used alone or in combination of two or more. Among these, Aqualon KH- 10, KH-05 can be preferably used.

(Resin (a2) having a sulfate group represented by formula (1) in the side chain)
As the resin having a sulfate group represented by the general formula (1) in the side chain, a copolymer obtained by using as a monomer component a monomer containing at least one sulfate group represented by the general formula (21) is used. A copolymer obtained by using a monomer containing at least one sulfate group as a monomer component is more preferable.

  When preparing a coloring composition for a color filter containing the salt-forming compound of the present invention and exhibiting properties as a color filter, it is possible to use the same type of resin as the binder resin constituting the coloring composition for the color filter. desirable. Since a vinyl resin is preferably used as the binder resin, a vinyl resin is most preferable as a resin for obtaining a salt-forming compound.

  Moreover, as resin which has a sulfuric acid group represented by General formula (1) of this invention in a side chain, the vinyl resin containing the structural unit represented by the following general formula (51) is preferable, and acrylic resin is especially preferable. Preferably used.

[In General Formula (51), R ₅₁ represents a hydrogen atom or a substituted or unsubstituted alkyl group.
Q ¹ represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted oxyalkylene group, a substituted or unsubstituted arylene group, or —R ₅₂ —A ₁ —.
A ₁ represents the general formula (52),

[In General Formula (52), R ₅₄ represents an alkylene group which may have a substituent, and n is an integer of 1 to 20. ]
R ₅₂ represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted oxyalkylene group, a substituted or unsubstituted arylene group, —CH ₂ —O—CH ₂ CH (R ₅₃ ) O—, —CONH—R _{55 -, - COO-R 55 -} , - R 56 -O- and _{represents, R 53} represents a monovalent alkyl group having from 1 to 30 carbon _{atoms, R 55} is a single bond, may have a substituent alkylene group which may have a substituent oxyalkylene _{group, -A 1 -R 56 -CH 2 -R} 56 -, or represents an arylene group which may have a _{substituent, R 56} is a substituent have represents an arylene group, P ^- is, -SO ₃ ^- represents a. Y ₃ ⁺ represents an inorganic or organic cation. ]

In the general formula (51), R ₅₁ represents a hydrogen atom or a substituted or unsubstituted alkyl group. Examples of the alkyl group for R ₁ include a methyl group, an ethyl group, a propyl group, an n-butyl group, an i-butyl group, a t-butyl group, an n-hexyl group, and a cyclohexyl group. As this alkyl group, a C1-C12 alkyl group is preferable, a C1-C8 alkyl group is more preferable, and a C1-C4 alkyl group is especially preferable.

When the alkyl group represented by R ₅₁ has a substituent, examples of the substituent include a hydroxyl group and an alkoxyl group. Among the above, R ₅₁ is most preferably a hydrogen atom or a methyl group.

In the general formula (51), acrylic site and P ^- component for Q ¹ for connecting a substituted or unsubstituted alkylene group, a substituted or unsubstituted oxyalkylene group, a substituted or unsubstituted arylene group or,, -R ₅₂ -A ₁ - represents a.

In general formula (51), examples of the alkylene group that may have a substituent of Q _1, an oxyalkylene group that may have a substituent, and an arylene group that may have a substituent include those of general formula (21 The alkylene group, the oxyalkylene group, and the arylene group described for R ² in () are included, but are not limited thereto.

R ₅₂ represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted oxyalkylene group, a substituted or unsubstituted arylene group, —CH ₂ —O—CH ₂ CH (R ₅₃ ) O—, —CONH—R ₅₅ —. , —COO—R ₅₅ —, —R ₅₆ —O—, which may be a linear alkylene group, a branched alkylene group, or a cyclic alkylene group. Among them, for the reasons of polymerizability and availability, —CONH—R ₅₅ —, —COO—R ₅₅ —, or —CH ₂ —O—CH ₂ CH (R) having a long-chain alkyl group having 8 to 18 carbon atoms is used. ₅₃ ) O- is preferred.

Specific examples of the alkylene group which may have a substituent for R _{52 in} the general formula (51) include an alkylene group which may have a substituent for R ₂ in the general formula (21). However, it is not limited to these.

The monovalent alkyl group having 1 to 30 carbon atoms of R _{53 in} the general formula (51) has the same meaning as the monovalent alkyl group having 1 to 30 carbon atoms represented by R3 described above. A monovalent alkyl group having 1 to 18 carbon atoms is preferable, and a monovalent alkyl group having 8 to 18 carbon atoms is preferable. The reason is that an alkyl group having a small number of carbon atoms adversely affects heat resistance. Further, in the case of an alkyl group having a large number of carbon atoms, there is a concern that it may adversely affect the solubility in preparing a resin or a dye salt product.

Specific examples of the alkylene group which may have a substituent of R _{54 in} the general formula (52) include an alkylene group which may have a substituent in R ₄ in the general formula (22). It is done. The alkylene group preferably has 1 to 10 carbon atoms, more preferably 1 to 5 carbon atoms, and particularly preferably 2 or 3 carbon atoms.

  Moreover, n in General formula (52) is an integer of 1-20, it is preferable that n is an integer of 2-15, and it is more preferable that n is an integer of 5-10.

In the general formula (51), the alkylene group which may have a substituent of R ₅₅ , the oxyalkylene group which may have a substituent, and the arylene group which may have a substituent include those represented by the general formula (21 The alkylene group, the oxyalkylene group, and the arylene group described for R ₂ in () are included, but are not limited thereto.

In the general formula (51), examples of the arylene group which may have a substituent of R ₅₆ include, but are not limited to, the arylene group described for R ₂ in the general formula (21).

As R ₅₂ in the general formula (51), among them, —CH ₂ —O—CH ₂ CH (R ₅₃ ) O— having a branched C 8-18 long chain alkyl group is polymerizable, It is preferable for reasons of availability and heat resistance.

In General Formula (51), A ₁ represents General Formula (52).

In the general formula (52), specific examples of the alkylene group that may have a substituent of R ₅₄ include the alkylene groups described for R ₃ in the general formula (21).

The Y ₃ ⁺ component in the general formula (51) constituting the resin represents an inorganic or organic cation, and any known one can be used without limitation. Specific examples of Y ₃ include hydrogen, alkali metal, alkaline earth metal, and an ammonium compound. At that time, the alkali metal is preferably sodium or potassium, and the alkaline earth metal is preferably calcium or magnesium. The ammonium compound is NH ⁴⁺ or a compound in which H is substituted with a hydrocarbon group or the like.

  In order to obtain a vinyl resin containing a structural unit represented by the following general formula (51), which is a preferred embodiment of the present invention, an ethylenically unsaturated monomer (a1-1) represented by the general formula (21) described above is used. And a method of copolymerizing with other ethylenically unsaturated monomers.

{Ethylenically unsaturated monomer (a1-1) represented by general formula (21)}
The ethylenically unsaturated monomer (a1-1) represented by the general formula (21) is the same as that described in the ethylenically unsaturated monomer having a sulfate group represented by the general formula (1). Things can be used.

{Other ethylenically unsaturated monomers}
Other ethylenically unsaturated monomers are not particularly limited as long as they can be radically polymerized with the ethylenically unsaturated monomer (a1-1) represented by the general formula (21). Can be selected as appropriate. For example,

Methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, tertiary butyl (meth) acrylate, isoamyl (meth) acrylate, Octyl (meth) acrylate, isooctyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, cetyl (meth) acrylate, decyl (meth) acrylate, isodecyl (meth) acrylate, lauryl (meth) acrylate, tridecyl (meth) acrylate, Linear or branched alkyl (meth) acrylates such as isomyristyl (meth) acrylate, stearyl (meth) acrylate, or isostearyl (meth) acrylate;

  Cyclohexyl (meth) acrylate, Tertiarybutylcyclohexyl (meth) acrylate, Dicyclopentanyl (meth) acrylate, Dicyclopentanyloxyethyl (meth) acrylate, Dicyclopentenyl (meth) acrylate, Dicyclopentenyloxyethyl (meth) ) Acrylates or cyclic alkyl (meth) acrylates such as isobornyl (meth) acrylate;

Fluoroalkyl (meth) acrylates such as trifluoroethyl (meth) acrylate, octafluoropentyl (meth) acrylate, perfluorooctylethyl (meth) acrylate, or tetrafluoropropyl (meth) acrylate;
(Meth) acryloxy-modified polydimethylsiloxane (silicone macromer); (meth) acrylates having a heterocyclic ring such as tetrahydrofurfuryl (meth) acrylate or 3-methyl-3-oxetanyl (meth) acrylate;

Benzyl (meth) acrylate, phenoxyethyl (meth) acrylate, phenoxypolyethylene glycol (meth) acrylate, paracumylphenoxyethyl (meth) acrylate, paracumylphenoxypolyethylene glycol (meth) acrylate, or nonylphenoxypolyethylene glycol (meth) acrylate, etc. Having an aromatic ring (
(Meth) acrylates;

(Meth) acrylic acid, acrylic acid dimer, 2- (meth) acryloyloxyethyl phthalate, 2- (meth) acryloyloxypropyl phthalate, 2- (meth) acryloyloxyethyl hexahydrophthalate, 2- (meth) (Meth) acrylates having a carboxyl group such as acryloyloxypropyl hexahydrophthalate, ethylene oxide-modified succinic acid (meth) acrylate, β-carboxyethyl (meth) acrylate, or ω-carboxypolycaprolactone (meth) acrylate;

  Examples of the ethylenically unsaturated monomer having a hydroxyl group are not particularly limited. For example, 2-hydroxyethyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, glycerol (Meth) acrylates having a hydroxyl group such as mono (meth) acrylate, 4-hydroxyvinylbenzene, 2-hydroxy-3-phenoxypropyl acrylate or caprolactone adducts of these monomers (immol number is 1 to 5);

  Methoxy polyethylene glycol mono (meth) acrylate, octoxy polyethylene glycol polypropylene glycol mono (meth) acrylate, lauroxy polyethylene glycol mono (meth) acrylate, stearoxy polyethylene glycol mono (meth) acrylate, phenoxy polyethylene glycol mono (meth) acrylate, Phenoxy polyethylene glycol polypropylene glycol mono (meth) acrylate, polyethylene glycol monomethyl ether (meth) acrylate, Lauroxy polyethylene glycol mono (meth) acrylate, Nonylphenoxy polyethylene glycol mono (meth) acrylate, Nonylphenoxy polypropylene glycol mono (meth) acrylate, Nonylphenoxy polyethylene glycol polypro Lenglycol mono (meth) acrylate, phenoxypolyethyleneglycol mono (meth) acrylate, methoxypolyethyleneglycol (meth) acrylate, n-butoxyethyl (meth) acrylate, n-butoxydiethylene glycol (meth) acrylate, 2-methoxyethyl (meth) (Meth) acrylates having an ether group such as acrylate and 2-ethoxyethyl (meth) acrylate;

  3- (acryloyloxymethyl) 3-methyloxetane, 3- (methacryloyloxymethyl) 3-methyloxetane, 3- (acryloyloxymethyl) 3-ethyloxetane, 3- (methacryloyloxymethyl) 3-ethyloxetane, 3- Oxetanyl groups such as (acryloyloxymethyl) 3-butyloxetane, 3- (methacryloyloxymethyl) 3-butyloxetane, 3- (acryloyloxymethyl) 3-hexyloxetane and 3- (methacryloyloxymethyl) 3-hexyloxetane (Meth) acrylates having;

Vinyls such as styrene, α-methylstyrene, vinyl acetate, vinyl (meth) acrylate, or allyl (meth) acrylate;
(Meth) acrylamide, N, N-dimethyl (meth) acrylamide, N, N-diethyl (meth) acrylamide, N-isopropyl (meth) acrylamide, diacetone (
N-substituted (meth) acrylamides such as meth) acrylamide or acryloylmorpholine;
Amino group-containing (meth) acrylates such as N, N-dimethylaminoethyl (meth) acrylate or N, N-diethylaminoethyl (meth) acrylate;
Nitriles such as (meth) acrylonitrile;
Antioxidant unit-containing (meth) acrylates having a hindered amine skeleton such as 1,2,2,6,6, -pentamethylpiperidyl (meth) acrylate and 2,2,6,6, tetramethylpiperidyl (meth) acrylate;
Alternatively, a mixture thereof can be mentioned.

  Also, vinyl ethers having an ether group such as ethyl vinyl ether, n-propyl vinyl ether, isopropyl vinyl ether, n-butyl vinyl ether, or isobutyl vinyl ether can be copolymerized with the monomer (a1-1).

  As other ethylenically unsaturated monomers, those having a thermally crosslinkable functional group or an alkyl group are preferred from the viewpoints of polymerizability with the monomer represented by formula (21) and the heat resistance of the colored composition.

  The heat-crosslinkable functional group is not particularly limited as a suitable structure. For example, a hydroxyl group, a carboxyl group, a carboxylic acid anhydride, a primary or secondary amino group, an imino group, an oxetanyl group, a tertiary butyl group, an epoxy And ethylenically unsaturated monomers having a group, mercapto group, isocyanate group, allyl group, (meth) acryl, glycidyl group, and the like. Above all, from the viewpoint of storage stability and reactivity with other materials in the use of a coloring composition for a color filter, a hydroxyl group, a carboxyl group, an oxetanyl group, a tertiary butyl group, an isocyanate group, a (meth) acryl group, an epoxy group, A glycidyl group is preferable, and a hydroxyl group, a carboxyl group, an isocyanate group, and a glycidyl group are particularly preferable.

  As the ethylenically unsaturated monomer that can be used, those having a thermally crosslinkable functional group are preferable from the viewpoint of heat resistance. Although it is not particularly limited as a suitable structure, for example, hydroxyl group, carboxyl group, carboxylic anhydride, primary or secondary amino group, imino group, oxetanyl group, tertiary butyl group, epoxy group, mercapto group, isocyanate group, Examples thereof include ethylenically unsaturated monomers having an allyl group, (meth) acrylic group, glycidyl group and the like. Above all, from the viewpoint of storage stability and reactivity with other materials in the use of a coloring composition for a color filter, a hydroxyl group, a carboxyl group, an oxetanyl group, a tertiary butyl group, an isocyanate group, a (meth) acryl group, an epoxy group, A glycidyl group is preferable, and a hydroxyl group, a carboxyl group, an isocyanate group, and a glycidyl group are particularly preferable.

  Of the ethylenically unsaturated monomers having a hydroxyl group, hydroxyethyl (meth) acrylate and 4-hydroxybutyl (meth) acrylate are most preferred from the viewpoint of heat resistance.

  Examples of the ethylenically unsaturated monomer having an oxetanyl group include 3- (acryloyloxymethyl) 3-methyloxetane, 3- (methacryloyloxymethyl) 3-methyloxetane, 3- (acryloyloxymethyl) 3-ethyloxetane, 3- (methacryloyloxymethyl) 3-ethyloxetane, 3- (acryloyloxymethyl) 3-butyloxetane, 3- (methacryloyloxymethyl) 3-butyloxetane, 3- (acryloyloxymethyl) 3-hexyloxetane and 3- (Methacryloyloxymethyl) 3-hexyloxetane and the like.

  Examples of the ethylenically unsaturated monomer having an isocyanate group include 2-isocyanate ethyl methacrylate, 2-isocyanate ethyl acrylate, 4-isocyanate butyl methacrylate, 4-isocyanate butyl acrylate, and the like.

  The isocyanate group in the present invention includes a blocked isocyanate group and can be preferably used. Under normal conditions, the blocked isocyanate group can protect the isocyanate group with other functional groups to suppress the reactivity of the isocyanate group, and can be deprotected by heating to regenerate the active isocyanate group. The isocyanate block body is shown.

  Examples of commercially available ethylenically unsaturated monomers having such a blocked isocyanate group include 2-[(3,5-dimethylpyrazolyl) carboxyamino] ethyl methacrylate (Karenz MOI-BP, Showa Denko); Examples include 2- (0- [1′methylpropylideneamino] carboxyamino) ethyl methacrylate (Karenz MOI-BM, manufactured by Showa Denko).

  Examples of the ethylenically unsaturated monomer having a glycidyl group include a glycidyl (meth) acrylate group.

  A structure suitable as an alkyl group is not particularly limited, but for example, a methyl group, an ethyl group, a butyl group, a 2-ethylhexyl group, a lauryl group, a dodecyl group, or an isostearyl group is preferable. , Methyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, dodecyl (meth) acrylate, and isostearyl (meth) acrylate are preferable.

  As a method for obtaining a resin obtained by copolymerizing an ethylenically unsaturated monomer containing an ethylenically unsaturated monomer (a1-1) suitable for the present invention, known methods such as free radical polymerization and living radical polymerization are known. Can be used.

  In the case of the free radical polymerization method, it is preferable to use a polymerization initiator. As the polymerization initiator, for example, an azo compound and an organic peroxide can be used. Examples of the azo compounds include 2,2′-azobisisobutyronitrile, 2,2′-azobis (2-methylbutyronitrile), 1,1′-azobis (cyclohexane 1-carbonitrile), 2 , 2′-azobis (2,4-dimethylvaleronitrile), 2,2′-azobis (2,4-dimethyl-4-methoxyvaleronitrile), dimethyl 2,2′-azobis (2-methylpropionate) 4,4′-azobis (4-cyanovaleric acid), 2,2′-azobis (2-hydroxymethylpropionitrile), or 2,2′-azobis [2- (2-imidazolin-2-yl ) Propane] and the like. Examples of organic peroxides include benzoyl peroxide, t-butyl perbenzoate, cumene hydroperoxide, diisopropyl peroxydicarbonate, di-n-propyl peroxydicarbonate, di (2-ethoxyethyl) peroxy Examples thereof include dicarbonate, t-butyl peroxyneodecanoate, t-butyl peroxybivalate, (3,5,5-trimethylhexanoyl) peroxide, dipropionyl peroxide, and diacetyl peroxide. These polymerization initiators can be used alone or in combination of two or more. The reaction temperature is preferably 40 to 150 ° C., more preferably 50 to 110 ° C., and the reaction time is preferably 3 to 30 hours, more preferably 5 to 20 hours.

  In the living radical polymerization method, side reactions that occur in general radical polymerization are suppressed, and further, since the growth of polymerization occurs uniformly, it is possible to easily synthesize block polymers and resins with uniform molecular weight.

  Among them, the atom transfer radical polymerization method using an organic halide or a sulfonyl halide compound as an initiator and a transition metal complex as a catalyst is applicable to a wide range of monomers, and has a polymerization temperature applicable to existing equipment. It is preferable in that it can be adopted. The atom transfer radical polymerization method can be carried out by the methods described in the following references 1 to 8 and the like.

(Reference 1) Fukuda et al., Prog. Polym. Sci. 2004, 29, 329 (reference 2) Matyjaszewski et al., Chem. Rev. 2001, 101, 2921
(Reference 3) Matyjaszewski et al. Am. Chem. Soc. 1995, 117, 5614
(Reference 4) Macromolecules 1995, 28, 7901, Science, 1996, 272, 866
(Reference 5) WO96 / 030421
(Reference 6) WO97 / 018247
(Reference 7) JP-A-9-208616 (Reference 8) JP-A-8-41117

  It is preferable to use an organic solvent for the polymerization. Although it does not specifically limit as an organic solvent, For example, methanol, ethanol, normal propanol, isopropanol, ethyl acetate, n-butyl acetate, isobutyl acetate, toluene, xylene, acetone, hexane, methyl ethyl ketone, cyclohexanone, propylene glycol Monomethyl ether acetate, dipropylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, or the like is used. Two or more kinds of these polymerization solvents may be mixed and used.

  The ethylenically unsaturated monomer (a1-1) represented by the general formula (21) suitable for the present invention is 10 wt% to 95 wt% based on the weight of the total ethylenically unsaturated monomer. Preferably, it is 20 to 60% by weight.

  When the weight of the ethylenically unsaturated monomer (a1-1) represented by the general formula (21) is less than 10% by weight, the proportion of the cationic dye in which salt formation reaction occurs is low. Therefore, the amount of unformed salt cationic dye increases, and as a result, the solvent solubility is lowered and a phenomenon such as precipitation of foreign matters occurs. Further, in order to prevent the precipitation of foreign matters, it is necessary to increase the amount of solvent in the resist material, but this is not preferable because the coating property is remarkably deteriorated. On the other hand, if it exceeds 95% by weight, the cation is salted into a resin obtained by radical polymerization of an ethylenically unsaturated monomer (a1-1) represented by the general formula (21). Since the amount of the dye becomes too large, the heat resistance deteriorates, which is not preferable.

  The molecular weight of the resin obtained by radical polymerization of an ethylenically unsaturated monomer containing the ethylenically unsaturated monomer (a1-1) represented by the general formula (21) used in the present invention is particularly limited. Although it is not a thing, it is preferable that the conversion weight average molecular weights measured by gel permeation chromatography (GPC) are 1,000-500,000, and it is more preferable that it is 3,000-15,000.

  The resin obtained by radical polymerization of an ethylenically unsaturated monomer (a1-1) represented by the general formula (21) suitable for the present invention is mixed with an organic solvent. A solution may be used. As an organic solvent, methanol, ethanol, n-propanol, isopropanol, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, n-butanol, isobutanol, 2- (methoxymethoxy) ethanol, 2-butoxyethanol 2- (isopentyloxy) ethanol, 2- (hexyloxy) ethanol, ethylene glycol, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol, Propylene glycol monomethyl ether acetate, dipropylene glycol, dipropylene glycol mono Chill ether, dipropylene glycol monoethyl ether, triethylene glycol, triethylene glycol monomethyl ether, polyethylene glycol, glycerin, tetraethylene glycol, dipropylene glycol, acetone, diacetone alcohol, aniline, pyridine, ethyl acetate, isopropyl acetate, methyl ethyl ketone, N, N-dimethylformamide, dimethyl sulfoxide, tetrahydrofuran (THF), dioxane, 2-pyrrolidone, 2-methylpyrrolidone, N-methyl-2-pyrrolidone, 1,2-hexanediol, 2,4,6-hexanetriol, Tetrafurfuryl alcohol, 4-methoxy-4-methylpentanone, and the like. Moreover, you may have the characteristic melt | dissolved in the propylene glycol monomethyl ether acetate etc. which are the solvent widely used for the coloring composition for color filters.

[Salt making]
These salt-forming compounds of a basic dye and a counter compound can be synthesized by a conventionally known method. A specific method is disclosed in Japanese Patent Laid-Open No. 2003-215850.
For example, after the triarylmethane basic dye is dissolved in water, a sulfuric acid ester or (sodium salt of sulfuric acid ester) solution is added, and the chlorination treatment may be performed while stirring. Here, a salt-forming compound in which the amino group (—NHC ₂ H ₅ ) portion of the triarylmethane basic dye and the sulfate group (—O—SO ₃ ) portion of the sulfate ester are bonded is obtained.
Here, the sulfate ester can be dissolved in an alkali solution such as sodium hydroxide before the salt-forming treatment and used as a form of sodium sulfate (—O—SO ₃ Na). In the present invention, it is also the same functional group _(-SO 3 Na) is a sodium sulfate group _(-O-SO 3 H).

[Resin having an acid group]
Further, the salt-forming compound used in the present invention includes an acid group such as a carboxyl group (rosin-modified maleic acid resin (also referred to as rosin-modified fumaric acid resin)), rosin ester, polyester resin, and styrene acrylic copolymer having acid value. By adding a polymer or the like, the compatibility in the binder resin, the dispersibility, and the dispersibility in the solvent are greatly improved. As a result, the colorant, heat resistance, and light resistance are further improved as a colorant. Here, the acid group is preferably a carboxyl group (—COOH) or a sulfone group (—SO ₃ H).

The resin having an acid group preferably has a weight average molecular weight in the range of 400 to 12,000. More preferably, it is 400-6000, Most preferably, it is the range of 400-2000. By using the thing of this range, compatibility with a salt-forming compound becomes favorable and dispersion | distribution in a binder resin becomes favorable as a coloring agent.
Moreover, the measurement of the weight average molecular weight of resin which has an acid group here was performed on condition of the following.
Tetrahydrofuran (THF) was added to the specimen and allowed to stand for 12 hours, and then the THF solution of the specimen was filtered, and the molecular weight of the specimen dissolved in the filtrate was measured. The measurement was performed by gel permeation chromatography (GPC), and the molecular weight was calculated from a calibration curve prepared with standard polystyrene.
GPC device: HLC-8120GPC manufactured by Tosoh Corporation
Column: TSK Guardcolumn manufactured by Tosoh Corporation
Super-H-HT / SK-GEL / Super HM-M 3 flow rate: 1.0 ml / min (THF)

As the resin having an acid group, rosin-modified maleic acid resin is preferably used. The rosin-modified maleic resin has an acid-containing polar group portion and a non-polar rosin skeleton portion. The polar group portion having this acid is a carboxyl group portion derived from unreacted abietic acid and a carboxyl group of maleic acid, and reacts and is compatible with the polar group portion of the binder resin. Further, the nonpolar rosin skeleton part is compatible with the nonpolar part of the binder resin.
Moreover, the effect of the reaction between the acid component of the rosin-modified maleic resin and the amino group portion of the basic dye (unreacted basic dye in the salt-forming compound) is also great.

The acid value of the resin having an acid group is preferably in the range of 100 to 300 mgKOH / g. If the acid value is less than 100 mgKOH / g, the compatibility with the salt-forming compound is deteriorated. On the other hand, if the acid value is larger than 300 mgKOH / g, it becomes unfavorable because it causes poor developability when used as an alkali developing type colored resist described later.
Here, the acid value is a value measured by the method of JIS K-0070.

When a resin having an acid group is added to and mixed with the salt-forming compound used in the present invention, it can be obtained by the following method.
(1) A method in which a salt-forming compound is added after being dissolved in a solvent soluble in a resin having an acid group and then mixed in the solution. (2) A resin having an acid group is melted using a kneader or the like. Examples thereof include a method of adding and mixing the salt-forming compound in the state of being prepared, but it may be synthesized by any conventionally known method.

  An example of these is as follows. Here, an example using a triarylmethane basic dye and a rosin-modified maleic resin is shown.

(1) Method of adding a salt-forming compound after being dissolved in a solvent soluble in a resin having an acid group and mixing in the solution (1-1)
After the triarylmethane basic dye is dissolved in water, a counter compound such as organic sulfonic acid is added, and a chlorination treatment is performed while stirring. Here, a salt-forming compound in which the amino group (—NHC ₂ H ₅ ) portion in the triarylmethane basic dye and the acid group portion in the counter are combined is obtained.
Here, the compound of the counter can be dissolved in an alkali solution such as sodium hydroxide and used as a form of sodium sulfonate (—SO ₃ Na) before the salt formation treatment. In the present invention, a sulfonic acid group (—SO ₃ H) and a functional group (—SO ₃ Na) which is sodium sulfonate are also synonymous.

(1-2)
Next, it is a step of adding a rosin-modified maleic acid resin. After adding an aqueous alkali solution such as an aqueous sodium hydroxide solution to adjust to neutral, the rosin-modified maleic acid resin dissolved in the aqueous alkali solution is added and stirred. Mix while mixing. Next, a rosin-modified maleic resin is insolubilized by adding a mineral acid such as hydrochloric acid or sulfuric acid to make it acidic, and then filtered, washed and dried to obtain a composition. Moreover, what is necessary is just to obtain a desired particle size through a grinding | pulverization process if necessary.

(2) Method of adding and mixing salt-forming compound in melted resin having acid group using kneading machine etc. Salt-forming compound of the present invention and resin having acid group (rosin-modified maleic acid resin etc.) Into a kneader such as a heating kneader, Banbury mixer, 3-roll mill, 2-roll mill, vibration mill, ball mill, attritor, extruder, etc. Melt kneading is performed at a temperature equal to or higher than the softening point of the group-containing resin. Thereby, the salt-forming compound is dispersed in the resin having an acid group. The composition obtained here is in a state where a salt-forming compound is coated with a resin having an acid group. Furthermore, the composition may be obtained by coarsely crushing and pulverizing the composition to adjust to a desired particle size.

When the weight mixing ratio of the salt-forming compound of the present invention to the resin having an acid group (salt-forming compound: resin having an acid group) is in the range of 70:30 to 95: 5, a good colorant can be obtained. . If the ratio of the resin having an acid group is larger than 30% by weight, the color developability is deteriorated, that is, the color defect derived from the resin having an acid group is likely to occur, and the ratio of the resin having an acid group is 5% by weight. When it becomes smaller than this, the dispersibility improvement effect of the salt-forming compound in the binder resin becomes small.
More preferably, the weight mixing ratio of the salt-forming compound of the present invention and the resin having an acid group (salt-forming compound: resin having an acid group) is in the range of 75:25 to 90:10.

《Other colorants》
The blue coloring composition of the present invention can further contain other colorants in addition to the salt-forming compound. Other colorants are preferably xanthene dyes, blue pigments, and violet pigments because the reproducible chromaticity region is widened.

[Xanthene dyes]
The xanthene colorant that can be preferably used in the present invention has a red or purple color, preferably has a dye form, and is in the form of an oil-soluble dye, an acid dye, a direct dye, or a basic dye. It is preferable to have it. Moreover, it may be in the form of a lake pigment obtained by lacquering these dyes.
Among these, it is preferable to use a xanthene oil-soluble dye and a xanthene acid dye because of excellent hue.

A red or purple color means C.I. I. Solvent Red, C.I. Oil soluble dyes such as I. solvent violet, C.I. I. Basic Red, C.I. Basic dyes such as I. basic violet, C.I. I. Acid Red, C.I. Acid dyes such as I. acid violet, C.I. I. Direct Red, C.I. I. Direct dyes such as direct violet, and the like.
Here, the direct dye has a sulfonic acid group (—SO ₃ H, —SO ₃ Na) in the structure, and in the present invention, the direct dye is regarded as a xanthene acid dye.

  The xanthene dye used in the present invention has a transmittance of 90% or more in the region of 650 nm in the transmission spectrum, a transmittance of 75% or more in the region of 600 nm, a transmittance of 5% or less in the region of 500 to 550 nm, 400 nm. In this region, the transmittance is preferably 70% or more. More preferably, the transmittance is 95% or more in the region of 650 nm, the transmittance is 80% or more in the region of 600 nm, the transmittance is 10% or less in the region of 500 to 550 nm, and the transmittance is 75% in the region of 400 nm. That's it.

Among them, xanthene basic dyes and xanthene acid dyes have spectral characteristics with high transmittance at 400 to 450 nm, but have problems with light resistance and heat resistance and require high reliability. The characteristics may not be sufficient for use in an image display device using a color filter.
Therefore, in order to improve these drawbacks, the xanthene-based basic dye is preferably used after being salted using an organic acid or perchloric acid. As the organic acid, organic sulfonic acid or organic carboxylic acid is preferably used. Of these, naphthalenesulfonic acid such as tobias acid and perchloric acid are preferably used in terms of resistance.
In addition, xanthene-based acid dyes are used as salt-forming compounds by salt formation using quaternary ammonium salt compounds, tertiary amine compounds, secondary amine compounds, primary amine compounds, etc., and resin components having these functional groups. In view of resistance, it is preferable to use it as a sulfonamide compound after sulfonamidation.

  Among these, a salt component of a xanthene acid dye and / or a sulfonic acid amide compound of a xanthene acid dye is preferable because of excellent hue and resistance, and further, a counter component that functions as a counter ion. It is more preferable to use a compound prepared by using a quaternary ammonium salt compound and a sulfonic acid amide compound obtained by sulfonamidating a xanthene acid dye.

  Among xanthene dyes, rhodamine dyes are preferable because they are excellent in color developability and resistance.

  Hereinafter, the form of the xanthene dye used in the present invention will be specifically described in detail.

(Xanthene oil-soluble dye)
Xanthene oil-soluble dyes include CI Solvent Red 35, CI Solvent Red 36, CI Solvent Red 42, CI Solvent Red 43, CI Solvent Red 44, and C.I. I. Solvent Red 45, C.I. Solvent Red 46, C.I. Solvent Red 47, C.I. Solvent Red 48, C.I. Solvent Red 49, C.I. Solvent Red 72, C.I. Solvent Red 73, CI Solvent Red 109, CI Solvent Red 140, CI Solvent Red 141, CI Solvent Red 237, CI Solvent Red 246, CI Solvent Violet 2, CI Solvent Violet 10 and the like.
Among them, CI solvent red 35, CI solvent red 36, CI solvent red 49, CI solvent red 109, CI solvent red, which are rhodamine-based oil-soluble dyes having high color development Red 237, CI Solvent Red 246, and CI Solvent Violet 2 are more preferable.

(Xanthene basic dye)
Examples of xanthene basic dyes include C.I. I. Basic Red 1 (Rhodamine 6 GCP), 8 (Rhodamine G), C.I. I. Basic violet 10 (Rhodamine B) and the like. Among these, C.I. I. Basic Red 1, C.I. I. Basic violet 10 is preferably used.

(Xanthene acid dyes)
Examples of xanthene acid dyes include C.I. I. Acid Red 51 (erythrosin (edible red No. 3)), C.I. I. Acid Red 52 (Acid Rhodamine), C.I. I. Acid Red 87 (Eosin G (edible red No. 103)), C.I. I. Acid Red 92 (Acid Phloxin PB (edible red No. 104)), C.I. I. Acid Red 289, C.I. I. Acid Red 388, Rose Bengal B (Edible Red No. 5), Acid Rhodamine G, C.I. I. It is preferable to use Acid Violet 9.
Among these, in terms of heat resistance and light resistance, C.I. I. Acid Red 87, C.I. I. Acid Red 92, C.I. I. Acid Red 388 or rhodamine acid dye C.I. I. Acid Red 52 (Acid Rhodamine), C.I. I. Acid Red 289, Acid Rhodamine G, C.I. I. It is more preferable to use Acid Violet 9.
Among these, C.I. is particularly excellent in terms of color development, heat resistance, and light resistance. I. Acid Red 52, C.I. I. Acid Red 87, C.I. I. Acid Red 92, C.I. I. Acid Red 289, and C.I. I. It is preferably at least one selected from the group consisting of Acid Red 388, and more preferably C.I. I. Acid Red 52, C.I. I. Acid Red 289.

  The xanthene dye used in the present invention is preferably at least one selected from the group consisting of a salt forming compound of a xanthene acid dye and a sulfonic acid amide compound of a xanthene acid dye. Since it is particularly preferable to use a salt of a xanthene acid dye or a salt of a xanthene acid dye that has been salted using a quaternary ammonium salt or a resin having a cationic group in the side chain, or a xanthene acid dye is used. Two forms are described in detail below.

(Salt-forming compounds of xanthene acid dyes)
In the present invention, the xanthene-based acidic dye is formed by chlorination using a quaternary ammonium salt compound, a tertiary amine compound, a secondary amine compound, a primary amine compound, etc., and a resin component having these functional groups, It is preferable to use a salt-forming compound of the above, or to sulfonamid to give a sulfonic acid amide compound because high heat resistance, light resistance, and solvent resistance can be imparted.

  Primary amine compounds include methylamine, ethylamine, propylamine, isopropylamine, butylamine, amylamine, hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecylamine, dodecylamine (laurylamine), tridodecylamine, tetra Examples include aliphatic unsaturated primary amines such as decylamine (myristylamine), pentadecylamine, cetylamine, stearylamine, oleylamine, cocoalkylamine, beef tallow alkylamine, cured tallow alkylamine, allylamine, aniline, and benzylamine. .

  Secondary amine compounds include aliphatic unsaturated secondary amines such as dimethylamine, diethylamine, dipropylamine, diisopropylamine, dibutylamine, diamylamine, diallylamine, methylaniline, ethylaniline, dibenzylamine, diphenylamine, dicocoalkyl. Amine, di-cured tallow alkylamine, distearylamine, etc.

  Examples of the tertiary amine compound include trimethylamine, triethylamine, tripropylamine, tributylamine, triamylamine, dimethylaniline, diethylaniline, tribenzylamine and the like.

-Salt forming compound consisting of xanthene acid dye and quaternary ammonium salt compound The xanthene dye used in the present invention can be used as a salt forming compound consisting of the aforementioned xanthene acid dye and quaternary ammonium salt compound. From the viewpoints of heat resistance, light resistance and solvent resistance.

-Quaternary ammonium salt compound A quaternary ammonium salt compound has an amino group, and the cation part becomes a counter of a xanthene acid dye.

  A preferred form of the quaternary ammonium salt compound that is a counter component of the salt-forming compound is colorless or white. Here, colorless or white means a so-called transparent state, and is defined as a state in which the transmittance is 95% or more, preferably 98% or more in the entire wavelength region of 400 to 700 nm in the visible light region. Is. That is, it is necessary not to inhibit color development of the dye component and to cause no color change.

The molecular weight of the cation moiety serving as a counter for the quaternary ammonium salt compound is preferably in the range of 190 to 900. Here, the cation moiety corresponds to the (NR ₁ R ₂ R ₃ R ₄ ) ⁺ moiety in the following general formula (1). When the molecular weight is smaller than 190, light resistance and heat resistance are lowered, and the solubility in a solvent may be further lowered. On the other hand, when the molecular weight is larger than 900, the ratio of the coloring component in the molecule is lowered, so that the color developability is lowered and the lightness is also lowered. More preferably, the molecular weight of the cation moiety is in the range of 240 to 850, and particularly preferably in the range of 350 to 800.
Here, the molecular weight was calculated based on the structural formula. The atomic weight of C was 12, the atomic weight of H was 1, and the atomic weight of N was 14.

  Moreover, the compound represented by the following general formula (61) can be used as the quaternary ammonium salt compound.

[In General Formula (61), R _{61 to} R ₆₄ each independently represent an alkyl group having 1 to 20 carbon atoms or a benzyl group, and at least two or more of R ₆₁ , R ₆₂ , R ₆₃ , or R ₆₄ However, the number of C is 5-20. Y ₄ ⁻ represents an inorganic or organic anion. ]

With 5 to 20 the number of C of at least two or more side chains of R ₆₁ to R _64, solubility in solvents is improved. If the number of C in R _{61 to} R ₆₄ is 3 or more, the solubility in a solvent is deteriorated and coating film foreign matter is likely to be generated. Further, if an alkyl group having a C number exceeding 20 is present in the side chain, the color forming property of the salt-forming compound may be impaired.

The component of Y ₄ ⁻ constituting the anion of the quaternary ammonium salt compound may be an inorganic or organic anion, but is preferably a halogen, and is usually chlorine.

Specific examples of such quaternary ammonium salt compounds include tetramethylammonium chloride (with a molecular weight of the cation moiety of 74), tetraethylammonium chloride (with a molecular weight of the cation moiety of 122), and monostearyltrimethylammonium chloride (with a molecular weight of the cation moiety). 312), distearyldimethylammonium chloride (cation part molecular weight 550), tristearyl monomethylammonium chloride (cation part molecular weight 788), cetyltrimethylammonium chloride (cation part molecular weight 284), trioctylmethylammonium chloride ( The molecular weight of the cation moiety is 368), dioctyldimethylammonium chloride (the molecular weight of the cation moiety is 270), monolauryltrimethyla Monium chloride (cation part molecular weight 228), dilauryldimethylammonium chloride (cation part molecular weight 382), trilaurylmethylammonium chloride (cation part molecular weight 536), triamylbenzylammonium chloride (cation part molecular weight 318), trihexylbenzylammonium chloride (cation part molecular weight 360), trioctylbenzylammonium chloride (cation part molecular weight 444), trilaurylbenzylammonium chloride (cation part molecular weight 612), benzyldimethylstearylammonium chloride (Molecular weight of the cation moiety is 388) and benzyldimethyloctyl ammonium chloride (molecular weight of the cation moiety is 248) , Or dialkyl (alkyl _C 14 _{-C 18)} dimethyl ammonium chloride (hydrogenated tallow) (molecular weight of the cationic moiety is from 438 to 550) is preferably used and the like.

As products, Cotamin 24P, Cotamin 86P Conch, Cotamin 60W, Cotamin 86W, Cotamin D86P, Sanizole C, Sanizole B-50, etc. manufactured by Kao Corporation, Lion Corporation's Arcade 210-80E, 2C-75, 2HT-75, 2HT flakes, 2O-75I, 2HP-75 or 2HP flakes and the like, among others QUARTAMIN D86P (distearyldimethylammonium chloride), or Arquad 2HT-75 (di (alkyl _C 14 _{-C 18)} dimethyl ammonium chloride) Etc. are preferable.

The quaternary ammonium salt compound may be in the form of a resin having a cationic group, particularly an amino group or an ammonium group in the side chain, and capable of forming a quaternary ammonium salt structure by reacting and salting with a xanthene acid dye. . (See Reference 1)
(Reference 1) Japanese Patent Application No. 2011-150752

Resin having a cationic group in the side chain The resin having a cationic group in the side chain is an alkaline resin containing a structural unit represented by the following general formula (62), and the cationic group in the general formula (62) However, a salt-forming compound can be obtained by forming a salt with the anionic group of the xanthene acid dye.

[In General Formula (62), R ₆₅ represents a hydrogen atom or a substituted or unsubstituted alkyl group. R _{6 to} R ₈ each independently represent a hydrogen atom, an optionally substituted alkyl group, an optionally substituted alkenyl group, or an optionally substituted aryl group, and R _{66 to} R ₆₈ Two of them may be bonded to each other to form a ring. Q alkylene group, arylene _{group, -CONH-R 69 -, -} COO-R 69 - _{represents, R 69} represents an alkylene group. Y ₅ ^— represents an inorganic or organic anion. ]

-Manufacturing method of salt-forming compound The salt-forming compound of a xanthene acid dye and a quaternary ammonium salt compound can be manufactured by a conventionally known method. A specific method is disclosed in Japanese Patent Laid-Open No. 11-72969.
For example, after the xanthene acid dye is dissolved in water, the quaternary ammonium salt compound is added and the chlorination treatment may be performed while stirring. Here, the sulfonic acid group (—SO ₃ H) and sodium sulfonate group (—SO ₃ Na) in the xanthene acid dye and the ammonium group (NH ₄ ⁺ ) part of the quaternary ammonium salt compound are combined. A salt compound is obtained. In addition, instead of water, methanol and ethanol are also solvents that can be used for the chlorination.

  The salt-forming compound used in the present invention is prepared by stirring or vibrating an aqueous solution in which a resin having a cationic group in the side chain represented by the general formula (62) and a xanthene-based acidic dye are dissolved, or in general. It can be easily obtained by mixing an aqueous solution of a resin having a cationic group in the side chain represented by the formula (62) and an aqueous solution of a xanthene-based acidic dye under stirring or vibration. In the aqueous solution, the ammonium group of the resin and the anionic group of the xanthene acid dye are ionized, and these are ionically bonded, and the ion-bonded portion becomes water-insoluble and precipitates. On the contrary, the salt composed of the counter anion of the resin and the counter cation of the xanthene-based acidic dye is water-soluble and can be removed by washing with water. The resin having a cationic group in the side chain to be used and the xanthene acid dye may be used alone or in a plurality of types having different structures.

  Examples of the salt-forming compound include C.I. I. Acid Red 289 and C.I. I. By using a salt-forming compound of Acid Red 52 and a quaternary ammonium salt compound having a molecular weight of the counter cation moiety of 350 to 800, it has excellent solvent solubility and is more heat resistant when used in combination with a pigment described later. Excellent in light resistance, light resistance and solvent resistance. In addition, it is presumed that the salt formation compound that is favorable when used in combination with the pigment is adsorbed on the pigment while being dissolved and dispersed in the solvent. At this time, the primary particle diameter of the pigment is preferably 20 to 100 nm.

(Sulphonic acid amide compound of xanthene acid dye)
The xanthene-based acid dye in the present invention is preferably sulfonated to give a sulfonic acid amide compound because high heat resistance, light resistance, and solvent resistance can be imparted.
A sulfonic acid amide compound of a xanthene acid dye that can be preferably used for the xanthene dye of the present invention is obtained by chlorinating a xanthene acid dye having —SO ₃ H and —SO ₃ Na by a conventional method, to obtain —SO ₃ H. Is —SO ₂ Cl, and this compound can be prepared by reacting with an amine having a —NH ₂ group.
Specific examples of amine compounds that can be preferably used in sulfonamidation include 2-ethylhexylamine, dodecylamine, 3-decyloxypropylamine, 3- (2-ethylhexyloxy) propylamine, and 3-ethoxypropyl. It is preferable to use amine, cyclohexylamine or the like.
For example, C.I. I. In the case of obtaining a sulfonic acid amide compound obtained by modifying Acid Red 289 with 3- (2-ethylhexyloxy) propylamine, C.I. I. Acid Red 289 was converted to a sulfonyl chloride and reacted with a theoretical equivalent of 3- (2-ethylhexyloxy) propylamine in dioxane to give C.I. I. What is necessary is just to obtain the sulfonic acid amide compound of Acid Red 289.
In addition, C.I. I. In the case of obtaining a sulfonic acid amide compound obtained by modifying Acid Red 52 with 3- (2-ethylhexyloxy) propylamine, C.I. I. Acid Red 52 was converted to a sulfonyl chloride and reacted with a theoretical equivalent of 3- (2-ethylhexyloxy) propylamine in dioxane to give C.I. I. What is necessary is just to obtain the sulfonic acid amide compound of Acid Red 52.

[Blue pigment]
Examples of blue pigments include C.I. I. Pigment Blue 1, 1: 2, 9, 14, 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 17, 19, 25, 27, 28, 29, 33, 35, 36, 56, 56: 1, 60, 61, 61: 1, 62, 63, 66, 67, 68, 71, 72, 73, 74, 75, 76, 78, 79 and the like. Among these, from the viewpoint of obtaining a high contrast ratio and high brightness, C.I. I. Pigment Blue 15, 15: 1, 15: 2, 15: 3, 15: 4, or 15: 6, and more preferably C.I. I. Pigment Blue 15: 6.

  In particular, when a colored composition is used for a blue filter segment, the spectral spectrum has a high transmittance in the vicinity of 425 to 500 nm having a characteristic peak of many backlights by using a blue pigment in combination. This is preferable because a high brightness can be obtained as a blue filter segment rather than a colorant combining a conventional blue pigment and other pigments.

[Purple pigment]
Examples of purple pigments include C.I. I. Pigment Violet 1, 1: 1, 2, 2: 2, 3, 3: 1, 3: 3, 5, 5: 1, 14, 15, 16, 19, 23, 25, 27, 29, 31, 32, 37, 39, 42, 44, 47, 49, 50 and the like. Among these, from the viewpoint of obtaining a high contrast ratio and high brightness, C.I. I. Pigment violet 19 or 23, more preferably C.I. I. Pigment Violet 23.

(Miniaturization of pigment)
When the colorant used in combination with the coloring composition of the present invention is a pigment, it can be refined by a salt milling treatment or the like. It is preferable that the average primary particle diameter calculated | required by TEM (transmission electron microscope) of a pigment is the range of 5-90 nm. If the thickness is smaller than 5 nm, dispersion in an organic solvent becomes difficult. If the thickness is larger than 90 nm, sufficient spectral characteristics may not be obtained. For these reasons, a more preferable average primary particle size is in the range of 10 to 70 nm.

  Salt milling means mixing a mixture of a pigment, a water-soluble inorganic salt and a water-soluble organic solvent into a kneader, a two-roll mill, a three-roll mill, a ball mill, an attritor, a sand mill, etc. This is a treatment in which a water-soluble inorganic salt and a water-soluble organic solvent are removed by washing with water after mechanically kneading while heating using a machine. The water-soluble inorganic salt serves as a crushing aid, and the pigment is crushed using the high hardness of the inorganic salt during salt milling. By optimizing the conditions at the time of subjecting the pigment to salt milling, a pigment having a sharp particle size distribution with a very fine primary particle diameter and a wide distribution range can be obtained.

  As the water-soluble inorganic salt, sodium chloride, barium chloride, potassium chloride, sodium sulfate and the like can be used, but sodium chloride (salt) is preferably used from the viewpoint of cost. The water-soluble inorganic salt is preferably used in an amount of 50 to 2000 parts by weight, and most preferably 300 to 1000 parts by weight with respect to 100 parts by weight of the pigment, from the viewpoint of both processing efficiency and production efficiency.

  The water-soluble organic solvent functions to wet the pigment and the water-soluble inorganic salt, and is not particularly limited as long as it dissolves (mixes) in water and does not substantially dissolve the inorganic salt to be used. However, a high boiling point solvent having a boiling point of 120 ° C. or higher is preferable from the viewpoint of safety because the temperature rises during salt milling and the solvent is easily evaporated. For example, 2-methoxyethanol, 2-butoxyethanol, 2- (isopentyloxy) ethanol, 2- (hexyloxy) ethanol, diethylene glycol, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether Tellurium, triethylene glycol, triethylene glycol monomethyl ether, liquid polyethylene glycol, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, dipropylene glycol, diethylene glycol Propylene glycol monomethyl ether, dipropylene glycol monoethyl ether, liquid polypropylene glycol and the like are used. The water-soluble organic solvent is preferably used in an amount of 5 to 1000 parts by weight, and most preferably 50 to 500 parts by weight, based on 100 parts by weight of the pigment.

  When the salt is milled, a resin may be added as necessary. The type of resin used is not particularly limited, and natural resins, modified natural resins, synthetic resins, synthetic resins modified with natural resins, and the like can be used. The resin used is solid at room temperature, preferably insoluble in water, and more preferably partially soluble in the organic solvent. The amount of the resin used is preferably in the range of 5 to 200 parts by weight with respect to 100 parts by weight of the pigment.

  The content of the colorant is preferably in the range of 10 to 45% by weight, more preferably in the range of 15 to 40% by weight, based on the solid content of the color filter coloring composition. If it is this range, since the color reproducibility at the time of using a color filter in a general film thickness range (about 1.0-3.0 micrometers) is favorable, it is preferable.

<Photopolymerizable monomer>
The photopolymerizable monomer of the present invention includes monomers or oligomers that are cured by ultraviolet rays or heat to produce a transparent resin, and these can be used alone or in combination of two or more.

  Examples of monomers and oligomers that are cured by ultraviolet rays or heat to produce transparent resins include polyethylene glycol di (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and epoxy (meth). Acrylate, EO-modified bisphenol A di (meth) acrylate, 1,4-butanediol di (meth) acrylate, diethylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, neopentyl glycol di (meth) Acrylate, polyester (meth) acrylate, trimethylolpropane tri (meth) acrylate, tris (acryloxyethyl) isocyanurate, tris (methacryloxyethyl) isocyanurate, di Various acrylic esters such as enterythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, caprolactone-modified dipentaerythritol hexaacrylate, ditrimethylolpropane tetra (meth) acrylate, epoxy acrylate, pentaerythritol tetra (meth) acrylate And methacrylic acid ester, (meth) acrylic acid, styrene, vinyl acetate, hydroxyethyl vinyl ether, ethylene glycol divinyl ether, pentaerythritol trivinyl ether, (meth) acrylamide, N-hydroxymethyl (meth) acrylamide, N-vinylformamide, acrylonitrile The effects of the present invention are not limited to these.

Moreover, the photopolymerizable monomer may contain an acid group. For example, esterified product of poly (meth) acrylates containing free hydroxyl group of polyhydric alcohol and (meth) acrylic acid and dicarboxylic acids; esterified product of polycarboxylic acid and monohydroxyalkyl (meth) acrylates, etc. Can be mentioned. Specific examples include trimethylolpropane diacrylate, trimethylolpropane dimethacrylate, pentaerythritol triacrylate, pentaerythritol trimethacrylate, dipentaerythritol pentaacrylate, dipentaerythritol pentamethacrylate and the like monohydroxy oligoacrylates or monohydroxy oligomethacrylates And a monoesterified product of free carboxyl group with dicarboxylic acids such as malonic acid, succinic acid, glutaric acid, terephthalic acid; propane-1,2,3-tricarboxylic acid (tricarbaryl acid), butane-1,2,4 -Tricarboxylic acids, such as benzene-1,2,3-tricarboxylic acid, benzene-1,3,4-tricarboxylic acid, benzene-1,3,5-tricarboxylic acid And a free carboxyl group-containing oligoester product of monohydroxy monoacrylate or monohydroxy monomethacrylate such as 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, etc. However, the effects of the present invention are not limited to these.
These photopolymerizable monomers can be used alone or in admixture of two or more at any ratio as required.

  The content of the photopolymerizable monomer is preferably 10 to 300 parts by weight and more preferably 10 to 200 parts by weight with respect to 100 parts by weight of the colorant from the viewpoint of photocurability and developability. It is preferable.

<Photopolymerization initiator>
The colored composition of the present invention can be cured using radicals generated from the photopolymerization initiator by ultraviolet irradiation or heat irradiation. The blending amount when using the photopolymerization initiator is preferably 5 to 200 parts by weight with respect to 100 parts by weight of the colorant, and more preferably 10 to 150 parts by weight from the viewpoint of photocurability.

As the photopolymerization initiator, a conventionally known polymerization initiator can be used. Specifically, diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzylmethyl ketal, 4- (2-hydroxyethoxy) phenyl- (2-hydroxy-2-propyl) ketone 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butane , Oligo [2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl] propanone], 2-hydroxy-1- [4- [4- (2-hydroxy-2-methylpropionyl) benzyl Acetophenones such as phenyl] -2-methylpropan-1-one; benzoin, benzoin methyl ether, benzoin ethyl ether Benzoins such as benzoin isopropyl ether and benzoin isobutyl ether; phosphines such as 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide and bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide; Examples include glyoxylic methyl ester. More specifically, Irgacure 651, Irgacure 184, Darocur 1173, Irgacure 500, Irgacure 1000, Irgacure 2959, Irgacure 907, Irgacure 369, Irgacure 379, Irgacure 1700, Irgacure 149, Irgacure 149 Cure 1800, IRGACURE 1850, IRGACURE 819, IRGACURE 784, IRGACURE 261, IRGACURE OXE-01, IRGACURE OXE-02 (BASF), Adekaoptomer N1717, Adekaoptomer N1919, Adeka Arcles NCI- 831 (ADEKA), Esacure 1001M (Lamberti), Japanese Patent Publication No. 59-1281, Japanese Patent Publication No. 61-9621, and Triazine derivatives described in JP-A-60-60104, organic peroxides described in JP-A-59-1504 and JP-A-61-243807, JP-B-43-23684, JP-B-44-6413, Japanese Patent Publication No. 47-1604 and diazonium compound publications described in US Pat. No. 3,567,453, USP No. 2,848,328, USP No. 2,852,379, and USP No. 2,940,853, organic azide compounds described in Japanese Patent Publication No. Sho 36- Ortho-quinonediazides described in JP-A-22062, JP-B-37-13109, JP-B-38-18015 and JP-B-45-9610, JP-B-55-39162, JP-A-59-140203 And `` MACROMOLECULES '', No. Vol. 0, various onium compounds including iodonium compounds described on page 1307 (1977), azo compounds described in JP-A-59-142205, JP-A-1-54440, European Patent No. 109851 EP-A-126712, “Journal of Imaging Science (J.IMAG.SCI.)”, Vol. 30, page 174 (1986), metal allene complexes described in JP-A-61-151197. Transition metals such as ruthenium described in JP-A-2-182701, as well as the titanocenes described in Japanese Patent Publication No. 1993, “COORDINATION CHEMISTRY REVIEW”, Vol. 84, pages 85-277 (1988) Transition metal complexes, aluminate complexes described in JP-A-3-209477, JP-A-2-1577 No. 60, borate compounds, JP-A Nos. 55-127550 and 60-202437, 2,4,5-triarylimidazole dimers, carbon tetrabromide and JP-A No. Nos. 59-107344, sulfonium complexes or oxosulfonium complexes described in JP-A-5-255347, JP-A-54-99185, JP-A-63-264560, and JP-A-10-29977. Aminoketone compounds described in JP-A-2001-264530, JP-A-2001-261761, JP-A-2000-80068, JP-A-2001-233842, JP-T-2004-534797, JP-A-2006-342166 , JP2008-094770, JP2009-40762, 2010-15025, JP2010-189279, JP2010-189280, JP2010-526846, JP2010-527338, JP2010-527339, USP3558309 (1971), USP4202697 (1980) And oxime ester compounds described in JP-A No. 61-24558.
These photopolymerization initiators can be used alone or in admixture of two or more at any ratio as required.

  These photopolymerization initiators can be used alone or in combination of two or more at any ratio as required.

<Antioxidant>
The coloring composition of the present invention can contain an antioxidant. Antioxidants are used to prevent the photopolymerization initiators and thermosetting compounds contained in the color filter coloring composition from oxidizing and yellowing due to thermal processes during thermal curing and ITO annealing. Can be high. Therefore, by including an antioxidant, yellowing due to oxidation during the heating step can be prevented, and a high coating film transmittance can be obtained.

  The “antioxidant” in the present invention may be a compound having an ultraviolet absorbing function, a radical scavenging function, or a peroxide decomposing function. Specifically, as an antioxidant, a hindered phenol type, a hindered amine type are used. , Phosphorus-based, sulfur-based, benzotriazole-based, benzophenone-based, hydroxylamine-based, salicylate-based, and triazine-based compounds, and known ultraviolet absorbers, antioxidants, and the like can be used.

  Among these antioxidants, a hindered phenol antioxidant, a hindered amine antioxidant, a phosphorus antioxidant, or a sulfur antioxidant is preferable from the viewpoint of achieving both transmittance and sensitivity of the coating film. Agents. More preferably, they are hindered phenolic antioxidants, hindered amine antioxidants, or phosphorus antioxidants.

  Examples of hindered phenol antioxidants include 2,4-bis [(laurylthio) methyl] -o-cresol, 1,3,5-tris (5,5-di-t-butyl-4-hydroxybenzyl), 1,3,5-tris (4-t-butyl-3-hydroxy-2,6-dimethylbenzyl), 2,4-bis- (n-octylthio) -6- (4-hydroxy-3,5-di- -T-butylanilino) -1,3,5-triazine, pentaerythritol tetrakis [3- (5,5-di-tert-butyl-4-hydroxyphenyl) propionate, 2,6-di-t-butyl-4- Nonylphenol, 2,2′-isobutylidene-bis- (4,6-dimethyl-phenol), 4,4′-butylidene-bis- (2-tert-butyl-5-methylphenol), 2,2′-thio -Bis- (6-tert-butyl-4-methylphenol), 2,5-di-tert-amyl-hydroquinone, 2,2'thiodiethylbis- (5,5-di-tert-butyl-4-hydroxy Phenyl) -propionate, 1,1,3-tris- (2′-methyl-4′-hydroxy-5′-t-butylphenyl) -butane, 2,2′-methylene-bis- (6- (1- Methyl-cyclohexyl) -p-cresol), 2,4-dimethyl-6- (1-methyl-cyclohexyl) -phenol, N, N-hexamethylenebis (5,5-di-t-butyl-4-hydroxy-) Hydrocinnamamide) and the like. In addition, oligomer-type and polymer-type compounds having a hindered phenol structure can also be used.

  Examples of hindered amine-based antioxidants include bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (N-methyl-2,2,6,6-tetramethyl-4-piperidyl) sebacate, N, N'-bis (2,2,6,6-tetramethyl-4-piperidyl) -1,6-hexamethylenediamine, 2-methyl-2- (2,2,6,6-tetramethyl-4 -Piperidyl) amino-N- (2,2,6,6-tetramethyl-4-piperidyl) propionamide, tetrakis (2,2,6,6-tetramethyl-4-piperidyl) (1,2,3, 4-butanetetracarboxylate, poly [{6- (1,1,3,3-tetramethylbutyl) imino-1,3,5-triazine-2,4-diyl} {(2,2,6,6 -Tetramethyl-4-piperidi ) Imino} hexamethyl {(2,2,6,6-tetramethyl-4-piperidyl) imino}], poly [(6-morpholino-1,3,5-triazine-2,4-diyl) {(2, 2,6,6-tetramethyl-4-piperidyl) imino} hexamethine {(2,2,6,6-tetramethyl-4-piperidyl) imino}], dimethyl succinate and 1- (2-hydroxyethyl)- Polycondensate with 4-hydroxy-2,2,6,6-tetramethylpiperidine, N, N′-4,7-tetrakis [4,6-bis {N-butyl-N- (1,2,2 , 6,6-pentamethyl-4-piperidyl) amino} -1,3,5-triazin-2-yl] -4,7-diazadecane-1,10-diamine, etc. Other oligomer type having a hindered amine structure as well as Rimmer type of compounds and the like can also be used.

  Phosphorous antioxidants include tris (isodecyl) phosphite, tris (tridecyl) phosphite, phenyl isooctyl phosphite, phenyl isodecyl phosphite, phenyl di (tridecyl) phosphite, diphenyl isooctyl phosphite, diphenyl isodecyl Phosphite, diphenyltridecyl phosphite, triphenyl phosphite, tris (nonylphenyl) phosphite, 4,4 ′ isopropylidenediphenol phosphite, trisnonylphenyl phosphite, trisdinonylphenyl phosphite, tris (2 , 4-di-t-butylphenyl) phosphite, tris (biphenyl) phosphite, distearyl pentaerythritol diphosphite, di ( , 4-Di-t-butylphenyl) pentaerythritol diphosphite, di (nonylphenyl) pentaerythritol diphosphite, phenylbisphenol A pentaerythritol diphosphite, tetratridecyl 4,4′-butylidenebis (5-methyl-) 6-t-butylphenol) diphosphite, hexatridecyl 1,1,3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane triphosphite, 3,5-di-t-butyl -4-hydroxybenzyl phosphite diethyl ester, sodium bis (4-t-butylphenyl) phosphite, sodium-2,2-methylene-bis (4,6-di-t-butylphenyl) -phosphite, 1,3 -Bis (diphenoxyphosphonoxy)- Benzene, phosphorous acid ethyl bis (2,4-di-tert- butyl-6-methylphenyl), and the like. In addition, oligomer type and polymer type compounds having a phosphite structure can also be used.

  As sulfur-based antioxidants, 2,2-thio-diethylenebis [3- (5,5-di-t-butyl-4-hydroxyphenyl) propionate], 2,4-bis [(octylthio) methyl]- o-cresol, 2,4-bis [(laurylthio) methyl] -o-cresol and the like. In addition, oligomer type and polymer type compounds having a thioether structure can also be used.

  As the benzotriazole-based antioxidant, oligomer-type and polymer-type compounds having a benzotriazole structure can be used.

  Specific examples of the benzophenone antioxidant include 2-hydroxy-4-methoxybenzophenone, 2,4-dihydroxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, 4-dodecyloxy-2-hydroxybenzophenone, 2 -Hydroxy-4-octadecyloxybenzophenone, 2,2'dihydroxy-4-methoxybenzophenone, 2,2'dihydroxy-4,4'-dimethoxybenzophenone, 2,2 ', 4,4'-tetrahydroxybenzophenone, 2, -Hydroxy-4-methoxy-5sulfobenzophenone, 2-hydroxy-4-methoxy-2'-carboxybenzophenone, 2-hydroxy-4-chlorobenzophenone and the like. In addition, oligomer type and polymer type compounds having a benzophenone structure can also be used.

  Examples of the triazine antioxidant include 2,4-bis (allyl) -6- (2-hydroxyphenyl) 1,3,5-triazine. In addition, oligomer-type and polymer-type compounds having a triazine structure can also be used.

  Examples of the salicylate ester antioxidant include phenyl salicylate, p-octylphenyl salicylate, p-tertbutylphenyl salicylate, and the like. In addition, oligomer-type and polymer-type compounds having a salicylate structure can also be used.

  These antioxidants can be used singly or in combination of two or more at any ratio as required.

  Further, the content of the antioxidant is more preferably 0.5 to 5.0% by weight based on the solid content weight of the photosensitive coloring composition for a color filter because the brightness and sensitivity are good.

<Binder resin>
The binder resin disperses, dyes, or penetrates the colorant, and examples thereof include a thermoplastic resin and a thermosetting resin.

  The binder resin is preferably a resin having a spectral transmittance of preferably 80% or more, more preferably 95% or more in the entire wavelength region of 400 to 700 nm in the visible light region. Moreover, when using with the form of an alkali image development type colored resist material, it is preferable to use the alkali-soluble vinyl resin which copolymerized the acidic group containing ethylenically unsaturated monomer. Furthermore, an active energy ray-curable resin having an ethylenically unsaturated double bond can be used for the purpose of further improving photosensitivity and improving solvent resistance.

  In particular, by using an active energy ray-curable resin having an ethylenically unsaturated double bond in the side chain for an alkali development resist for color filters, no coating film foreign matter is generated after the colorant is applied. The stability of the colorant is preferably improved. When a linear resin that does not have an ethylenically unsaturated double bond in the side chain is used, the colorant is not easily trapped in the resin and the colorant mixture, and has a degree of freedom. The colorant component easily aggregates and precipitates, but by using an active energy ray-curable resin having an ethylenically unsaturated double bond in the side chain, the colorant is converted into a resin in a mixture of resin and colorant. Because it is easily trapped, it is difficult for the dye to elute in the solvent resistance test, the colorant component does not easily aggregate and precipitate, and the resin is three-dimensionally crosslinked when exposed to active energy rays to form a film. It is estimated that the colorant component is less likely to aggregate and precipitate even if the colorant molecules are fixed and the solvent is removed in the subsequent development step.

  The weight average molecular weight (Mw) of the binder resin is preferably in the range of 10,000 to 100,000, more preferably in the range of 10,000 to 80,000 in order to disperse the colorant preferably. The number average molecular weight (Mn) is preferably in the range of 5,000 to 50,000, and the value of Mw / Mn is preferably 10 or less.

  When the binder resin is used as a coloring composition for a color filter, from the viewpoint of dispersibility, permeability, developability, and heat resistance of the dye monomer (A) and the pigment (B) of the present invention, a colorant. The balance between the adsorption group and the carboxyl group that acts as an alkali-soluble group during development, the aliphatic group that acts as an affinity group for the colorant carrier and the solvent, and the aromatic group is important. It is preferable to use it. When the acid value is less than 20 mgKOH / g, the solubility in the developing solution is poor and it is difficult to form a fine pattern. When it exceeds 300 mgKOH / g, no fine pattern remains.

  The binder resin is preferably used in an amount of 30 parts by weight or more based on 100 parts by weight of the total weight of the colorant because the film formability and various resistances are good, and the colorant concentration is high, and good color characteristics are obtained. Since it can be expressed, it is preferably used in an amount of 500 parts by weight or less.

(Thermoplastic resin)
Examples of the thermoplastic resin used for the binder resin include acrylic resin, butyral resin, styrene-maleic acid copolymer, chlorinated polyethylene, chlorinated polypropylene, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, polyvinyl acetate. , Polyurethane resins, polyester resins, vinyl resins, alkyd resins, polystyrene resins, polyamide resins, rubber resins, cyclized rubber resins, celluloses, polyethylene (HDPE, LDPE), polybutadiene, and polyimide resins. . Among them, it is preferable to use an acrylic resin.

  Examples of the vinyl-based alkali-soluble resin copolymerized with an acidic group-containing ethylenically unsaturated monomer include resins having an acidic group such as a carboxyl group or a sulfone group. Specific examples of the alkali-soluble resin include an acrylic resin having an acidic group, an α-olefin / (anhydrous) maleic acid copolymer, a styrene / styrene sulfonic acid copolymer, an ethylene / (meth) acrylic acid copolymer, or Examples include isobutylene / (anhydrous) maleic acid copolymer. Among these, at least one resin selected from an acrylic resin having an acidic group and a styrene / styrene sulfonic acid copolymer, particularly an acrylic resin having an acidic group, is preferably used because of its high heat resistance and transparency.

  Examples of the active energy ray-curable resin having an ethylenically unsaturated double bond include resins having an unsaturated ethylenic double bond introduced by the following methods (a) and (b).

[Method (a)]
As the method (a), for example, a side chain epoxy group of a copolymer obtained by copolymerizing an unsaturated ethylenic monomer having an epoxy group and one or more other monomers is used. Then, the carboxyl group of the unsaturated monobasic acid having an unsaturated ethylenic double bond is subjected to an addition reaction, and the resulting hydroxyl group is reacted with a polybasic acid anhydride to convert the unsaturated ethylenic double bond and the carboxyl group into There is a way to introduce.

  Examples of the unsaturated ethylenic monomer having an epoxy group include glycidyl (meth) acrylate, methyl glycidyl (meth) acrylate, 2-glycidoxyethyl (meth) acrylate, 3,4 epoxybutyl (meth) acrylate, And 3,4 epoxy cyclohexyl (meth) acrylates, and these may be used alone or in combination of two or more. From the viewpoint of reactivity with the unsaturated monobasic acid in the next step, glycidyl (meth) acrylate is preferred.

  Examples of unsaturated monobasic acids include (meth) acrylic acid, crotonic acid, o-, m-, p-vinylbenzoic acid, α-haloalkyl of (meth) acrylic acid, alkoxyl, halogen, nitro, cyano substituted products, etc. Monocarboxylic acid etc. are mentioned, These may be used independently or may use 2 or more types together.

  Examples of polybasic acid anhydrides include tetrahydrophthalic anhydride, phthalic anhydride, hexahydrophthalic anhydride, succinic anhydride, maleic anhydride, etc., and these may be used alone or in combination of two or more. It doesn't matter. If necessary, use a tricarboxylic anhydride such as trimellitic anhydride or a tetracarboxylic dianhydride such as pyromellitic dianhydride to increase the number of carboxyl groups. The group can also be hydrolyzed. Moreover, when an etrahydrophthalic anhydride or maleic anhydride having an unsaturated ethylenic double bond is used as the polybasic acid anhydride, the number of unsaturated ethylenic double bonds can be increased.

  As a method similar to the method (a), for example, a side chain of a copolymer obtained by copolymerizing an unsaturated ethylenic monomer having a carboxyl group and one or more other monomers. There is a method in which an unsaturated ethylenic monomer having an epoxy group is added to a part of a carboxyl group to introduce an unsaturated ethylenic double bond and a carboxyl group.

[Method (b)]
As the method (b), an unsaturated ethylenic monomer having a hydroxyl group is used, and an unsaturated monobasic acid monomer having another carboxyl group or another monomer is copolymerized. There is a method of reacting an isocyanate group of an unsaturated ethylenic monomer having an isocyanate group with a side chain hydroxyl group of the obtained copolymer.

  Examples of the unsaturated ethylenic monomer having a hydroxyl group include 2-hydroxyethyl (meth) acrylate, 2- or 3-hydroxypropyl (meth) acrylate, 2- or 3- or 4-hydroxybutyl (meth) acrylate, and glycerol Examples thereof include hydroxyalkyl (meth) acrylates such as (meth) acrylate or cyclohexanedimethanol mono (meth) acrylate, and these may be used alone or in combination of two or more. Further, polyether mono (meth) acrylate obtained by addition polymerization of ethylene oxide, propylene oxide, and / or butylene oxide to the above hydroxyalkyl (meth) acrylate, (poly) γ-valerolactone, (poly) ε-caprolactone And / or (poly) 12-hydroxystearic acid added (poly) ester mono (meth) acrylate can also be used. From the viewpoint of suppressing foreign matter on the coating film, 2-hydroxyethyl (meth) acrylate or glycerol (meth) acrylate is preferable.

  Examples of the unsaturated ethylenic monomer having an isocyanate group include 2- (meth) acryloyloxyethyl isocyanate, 1,1-bis [(meth) acryloyloxy] ethyl isocyanate, and the like. In addition, two or more types can be used in combination.

(Thermosetting resin)
Examples of the thermosetting resin used for the binder resin include epoxy resins, benzoguanamine resins, rosin-modified maleic acid resins, rosin-modified fumaric acid resins, melamine resins, urea resins, cardo resins, and phenol resins.

The thermosetting resin may be, for example, a low-molecular compound such as an epoxy compound, a benzoguanamine compound, a rosin-modified maleic acid compound, a rosin-modified fumaric acid compound, a melamine compound, a urea compound, a cardo compound, and a phenol compound. It is not limited to this. By including such a thermosetting resin, the resin reacts at the time of firing the filter segment, the cross-linking density of the coating film is increased, the heat resistance is improved, and the effect of suppressing pigment aggregation at the time of firing the filter segment is obtained. It is done.
Among these, an epoxy resin, a cardo resin, or a melamine resin is preferable.

<Organic solvent>
In the coloring composition of the present invention, a colorant is sufficiently dissolved in a monomer, a resin, and the like, and applied to a substrate such as a glass substrate so as to have a dry film thickness of 0.2 to 5 μm to form a filter segment. In order to facilitate this, a solvent can be included.

  Examples of the organic solvent include ethyl lactate, benzyl alcohol, 1,2,3-trichloropropane, 1,3-butanediol, 1,3-butylene glycol, 1,3-butylene glycol diacetate, 1,4-dioxane, 2-heptanone, 2-methyl-1,3-propanediol, 3,5,5-trimethyl-2-cyclohexen-1-one, 3,3,5-trimethylcyclohexanone, ethyl 3-ethoxypropionate, 3-methyl -1,3-butanediol, 3-methoxy-3-methyl-1-butanol, 3-methoxy-3-methylbutyl acetate, 3-methoxybutanol, 3-methoxybutyl acetate, 4-heptanone, m-xylene, m -Diethylbenzene, m-dichlorobenzene, N, N-dimethylacetamide, N, N- Methylformamide, n-butyl alcohol, n-butylbenzene, n-propyl acetate, o-xylene, o-chlorotoluene, o-diethylbenzene, o-dichlorobenzene, p-chlorotoluene, p-diethylbenzene, sec-butylbenzene, tert-butylbenzene, γ-butyrolactone, isobutyl alcohol, isophorone, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monoethyl ether, ethylene glycol monoethyl ether acetate, ethylene glycol monotertiary butyl ether, Ethylene glycol monobutyl ether, ethylene glycol monobutyl ether acetate, ethylene glycol Monopropyl ether, ethylene glycol monohexyl ether, ethylene glycol monomethyl ether, ethylene glycol monomethyl ether acetate, diisobutyl ketone, diethylene glycol diethyl ether, diethylene glycol dimethyl ether, diethylene glycol monoisopropyl ether, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether, diethylene glycol monobutyl ether acetate , Diethylene glycol monomethyl ether, cyclohexanol, cyclohexanol acetate, cyclohexanone, dipropylene glycol dimethyl ether, dipropylene glycol methyl ether acetate, dipropylene glycol monoethyl ether Dipropylene glycol monobutyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monomethyl ether, diacetone alcohol, triacetin, tripropylene glycol monobutyl ether, tripropylene glycol monomethyl ether, propylene glycol diacetate, propylene glycol phenyl ether, propylene glycol mono Ethyl ether, propylene glycol monoethyl ether acetate, propylene glycol monobutyl ether, propylene glycol monopropyl ether, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether propionate, benzyl alcohol, Louis Seo ketone, methyl cyclohexanol, acetic acid n- amyl acetate n- butyl, isoamyl acetate, isobutyl acetate, propyl acetate, and dibasic acid esters.

  Among them, alkyl lactates such as ethyl lactate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, glycol acetates such as ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, aromatic alcohols such as benzyl alcohol, It is preferable to use ketones such as cyclohexanone.

  These organic solvents can be used individually by 1 type or in mixture of 2 or more types. When using 2 or more types of mixed solvents, it is preferable that said preferable organic solvent contains 65 to 95 weight% in 100 weight% of the whole organic solvent.

  Moreover, since the organic solvent can adjust the coloring composition to an appropriate viscosity and can form a filter segment having a desired uniform film thickness, the amount is 500 to 4000% by weight with respect to 100% by weight of the total weight of the colorant. It is preferable to use in.

<Sensitizer>
Furthermore, the coloring composition of the present invention can contain a sensitizer.
Sensitizers include benzophenone derivatives, unsaturated ketone derivatives such as chalcone derivatives and dibenzalacetone, 1,2-diketone derivatives such as benzyl and camphorquinone, benzoin derivatives, fluorene derivatives, and naphthoquinone derivatives. Anthraquinone derivatives, xanthene derivatives, thioxanthene derivatives, xanthone derivatives, thioxanthone derivatives, coumarin derivatives, ketocoumarin derivatives, cyanine derivatives, merocyanine derivatives, oxonol derivatives and other polymethine dyes, acridine derivatives, azine derivatives, thiazine derivatives, oxazine derivatives, Indoline derivatives, azulene derivatives, azurenium derivatives, squarylium derivatives, porphyrin derivatives, tetraphenylporphyrin derivatives, triarylmethane derivatives, teto Benzoporphyrin derivative, tetrapyrazinoporphyrazine derivative, phthalocyanine derivative, tetraazaporphyrazine derivative, tetraquinoxalyloporphyrazine derivative, naphthalocyanine derivative, subphthalocyanine derivative, pyrylium derivative, thiopyrylium derivative, tetraphyrin derivative, annulene derivative, spiropyran Examples thereof include, but are not limited to, derivatives, spirooxazine derivatives, thiospiropyran derivatives, metal arene complexes, and organoruthenium complexes.

  Specific examples include Okawara Nobu et al., “Dye Handbook” (1986, Kodansha), Okawara Nobu et al., “Functional Dye Chemistry” (1981, CMC), Ikemori Chusaburo et al., “Special Examples include, but are not limited to, the dyes and sensitizers described in “Functional Materials” (1986, CMC), and other dyes and sensitizers that absorb light from the ultraviolet to the near infrared region. There may be mentioned sensitizers, and these may be used in an arbitrary ratio as required. Among the sensitizers, thioxanthone derivatives include 2,4-diethylthioxanthone, 2-chlorothioxanthone, 2,4-dichlorothioxanthone, 2-isopropylthioxanthone, 4-isopropylthioxanthone, 1-chloro-4-propoxythioxanthone. Examples of benzophenones include benzophenone, 4-methylbenzophenone, 2,4,6-trimethylbenzophenone, 4,4′-dimethylbenzophenone, 4,4′-dimethoxybenzophenone, 4,4′-bis. (Diethylamino) benzophenone and the like can be mentioned. Examples of coumarins include coumarin 1, coumarin 338 and coumarin 102. Examples of ketocoumarins include 3,3′-carbonylbis (7-diethylaminocoumarin). Raised Although it is Rukoto, but is not limited thereto.

  Two or more kinds of sensitizers may be used in any ratio as required. The blending amount when using the sensitizer is preferably 3 to 60% by weight with respect to 100% by weight of the total weight of the photopolymerization initiator (D) contained in the colored photosensitive composition. From the viewpoint of properties, it is more preferably 5 to 50% by weight.

<Multifunctional thiol>
The coloring composition of the present invention can contain a polyfunctional thiol that functions as a chain transfer agent.
The polyfunctional thiol may be a compound having two or more thiol groups. For example, hexanedithiol, decanedithiol, 1,4-butanediol bisthiopropionate, 1,4-butanediol bisthioglycolate, ethylene Glycol bisthioglycolate, ethylene glycol bisthiopropionate, trimethylolpropane tristhioglycolate, trimethylolpropane tristhiopropionate, trimethylolpropane tris (5-mercaptobutyrate), pentaerythritol tetrakisthioglycolate, Pentaerythritol tetrakisthiopropionate, trimercaptopropionic acid tris (2-hydroxyethyl) isocyanurate, 1,4-dimethylmercaptobenzene, 2,4,6-trimercap -s- triazine, 2- (N, N- dibutylamino) -4,6-dimercapto -s- triazine.
These polyfunctional thiols can be used singly or in combination of two or more in any ratio as required.

  The content of the polyfunctional thiol is preferably 0.1 to 30% by weight, more preferably 1 to 20% by weight based on the weight (100% by weight) of the total solid content of the color filter coloring composition. . If the content of the polyfunctional thiol is less than 0.1% by weight, the effect of adding the polyfunctional thiol is insufficient, and if it exceeds 30% by weight, the sensitivity is too high and the resolution is lowered.

<Amine compound>
Moreover, the coloring composition of this invention can be made to contain the amine compound which has a function which reduces the dissolved oxygen.

  Such amine compounds include triethanolamine, methyldiethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 2-dimethylaminobenzoate. Examples include ethyl, 2-ethylhexyl 4-dimethylaminobenzoate, and N, N-dimethylparatoluidine.

<Leveling agent>
In order to improve the leveling property of the composition on the transparent substrate, it is preferable to add a leveling agent to the colored composition of the present invention. As the leveling agent, dimethylsiloxane having a polyether structure or a polyester structure in the main chain is preferable. Specific examples of dimethylsiloxane having a polyether structure in the main chain include FZ-2122 manufactured by Toray Dow Corning, BYK-333 manufactured by Big Chemie. Specific examples of dimethylsiloxane having a polyester structure in the main chain include BYK-310 and BYK-370 manufactured by BYK Chemie. Dimethylsiloxane having a polyether structure in the main chain and dimethylsiloxane having a polyester structure in the main chain can be used in combination. The content of the leveling agent is usually preferably 0.003 to 0.5% by weight in a total of 100% by weight of the coloring composition.

  Particularly preferred as a leveling agent is a kind of so-called surfactant having a hydrophobic group and a hydrophilic group in the molecule, having a hydrophilic group but low solubility in water, and when added to a coloring composition, It has the characteristics of low surface tension reduction ability, and it is useful to have good wettability to the glass plate despite its low surface tension reduction ability. Those that can sufficiently suppress the chargeability can be preferably used. As a leveling agent having such preferable characteristics, dimethylpolysiloxane having a polyalkylene oxide unit can be preferably used. Examples of the polyalkylene oxide unit include a polyethylene oxide unit and a polypropylene oxide unit, and dimethylpolysiloxane may have both a polyethylene oxide unit and a polypropylene oxide unit.

  In addition, the bonding form of the polyalkylene oxide unit with dimethylpolysiloxane includes a pendant type in which the polyalkylene oxide unit is bonded in the repeating unit of dimethylpolysiloxane, a terminal-modified type in which the end of dimethylpolysiloxane is bonded, and dimethylpolysiloxane. Any of linear block copolymer types in which they are alternately and repeatedly bonded may be used. Dimethylpolysiloxane having a polyalkylene oxide unit is commercially available from Toray Dow Corning Co., Ltd., for example, FZ-2110, FZ-2122, FZ-2130, FZ-2166, FZ-2191, FZ-2203, FZ. -2207, but is not limited thereto.

  An anionic, cationic, nonionic or amphoteric surfactant can be supplementarily added to the leveling agent. Two or more kinds of surfactants may be mixed and used.

  Anionic surfactants added to the leveling agent as auxiliary agents include polyoxyethylene alkyl ether sulfate, sodium dodecylbenzene sulfonate, alkali salt of styrene-acrylic acid copolymer, sodium alkyl naphthalene sulfonate, alkyl diphenyl ether disulfonic acid Sodium, lauryl sulfate monoethanolamine, lauryl sulfate triethanolamine, ammonium lauryl sulfate, monoethanolamine stearate, sodium stearate, sodium lauryl sulfate, monoethanolamine of styrene-acrylic acid copolymer, polyoxyethylene alkyl ether phosphate Examples include esters.

  Examples of the chaotic surfactant that is supplementarily added to the leveling agent include alkyl quaternary ammonium salts and their ethylene oxide adducts. Nonionic surfactants added to the leveling agent as auxiliary agents include polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene nonylphenyl ether, polyoxyethylene alkyl ether phosphate ester, polyoxyethylene sorbitan monostearate And amphoteric surfactants such as alkyl dimethylamino acetic acid betaine and alkylimidazolines, and fluorine-based and silicone-based surfactants.

<Curing agent, curing accelerator>
Moreover, in order to assist hardening of a thermosetting resin, the coloring composition of this invention may contain the hardening | curing agent, the hardening accelerator, etc. as needed. As the curing agent, phenolic resins, amine compounds, acid anhydrides, active esters, carboxylic acid compounds, sulfonic acid compounds and the like are effective, but are not particularly limited to these, and thermosetting resins. Any curing agent may be used as long as it can react with the. Among these, a compound having two or more phenolic hydroxyl groups in one molecule and an amine curing agent are preferable. Examples of the curing accelerator include amine compounds (for example, dicyandiamide, benzyldimethylamine, 4- (dimethylamino) -N, N-dimethylbenzylamine, 4-methoxy-N, N-dimethylbenzylamine, 4-methyl). -N, N-dimethylbenzylamine etc.), quaternary ammonium salt compounds (eg triethylbenzylammonium chloride etc.), blocked isocyanate compounds (eg dimethylamine etc.), imidazole derivative bicyclic amidine compounds and salts thereof (eg Imidazole, 2-methylimidazole, 2-ethylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 4-phenylimidazole, 1-cyanoethyl-2-phenylimidazole, 1- (2-cyanoethyl) -2- D Ru-4-methylimidazole, etc.), phosphorus compounds (eg, triphenylphosphine, etc.), guanamine compounds (eg, melamine, guanamine, acetoguanamine, benzoguanamine, etc.), S-triazine derivatives (eg, 2,4-diamino-6) -Methacryloyloxyethyl-S-triazine, 2-vinyl-2,4-diamino-S-triazine, 2-vinyl-4,6-diamino-S-triazine isocyanuric acid adduct, 2,4-diamino-6 Methacryloyloxyethyl-S-triazine / isocyanuric acid adduct, etc.) can be used. These may be used alone or in combination of two or more. As content of the said hardening accelerator, 0.01 to 15 weight% is preferable with respect to 100 weight% of thermosetting resins.

<Other additive components>
The colored composition of the present invention can contain a storage stabilizer in order to stabilize the viscosity of the composition over time. Moreover, in order to improve adhesiveness with a transparent substrate, adhesion improving agents, such as a silane coupling agent, can also be contained.

  Examples of storage stabilizers include quaternary ammonium chlorides such as benzyltrimethyl chloride and diethylhydroxyamine, organic acids such as lactic acid and oxalic acid, and methyl ethers thereof, t-butylpyrocatechol, tetraethylphosphine, and tetraphenylphosphine. Organic phosphines, phosphites and the like can be mentioned. The storage stabilizer can be used in an amount of 0.1 to 10% by weight based on 100% by weight of the total amount of the colorant.

Examples of the adhesion improver include vinyl silanes such as vinyltris (β-methoxyethoxy) silane, vinylethoxysilane, vinyltrimethoxysilane, (meth) acrylsilanes such as γ-methacryloxypropyltrimethoxysilane, β- (5, 4-epoxycyclohexyl) ethyltrimethoxysilane, β- (5,4-epoxycyclohexyl) methyltrimethoxysilane, β- (5,4-epoxycyclohexyl) ethyltriethoxysilane, β- (5,4-epoxycyclohexyl) Epoxysilanes such as methyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, N-β (aminoethyl) γ-aminopropyltrimethoxysilane, N-β (amino Ethyl) γ-aminopropyltrie Xisilane, N-β (aminoethyl) γ-aminopropylmethyldiethoxysilane, γ-aminopropyltriethoxysilane, γ-aminopropyltrimethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, N-phenyl Examples include silane coupling agents such as aminosilanes such as -γ-aminopropyltriethoxysilane, and thiosilanes such as γ-mercaptopropyltrimethoxysilane and γ-mercaptopropyltriethoxysilane. The adhesion improver can be used in an amount of 0.01 to 10% by weight, preferably 0.05 to 5% by weight, with respect to 100% by weight of the total amount of the colorant in the coloring composition.
<Method for producing colored composition>
The coloring composition of the present invention comprises a colorant containing the salt-forming compound of the present invention in a colorant carrier comprising the resin and, if necessary, a solvent, preferably together with a dispersion aid such as a pigment derivative. In addition, it can be produced by finely dispersing using various dispersing means such as a three-roll mill, a two-roll mill, a sand mill, a kneader, or an attritor.

  The colored composition of the present invention can also be produced by mixing the salt-forming compound of the present invention, other colorants and the like separately dispersed in a colorant carrier. Furthermore, when the salt-forming compound of the present invention is highly soluble, specifically, it is highly soluble in the solvent to be used. There is no need to manufacture.

[Dispersion aid]
When dispersing the colorant in the colorant carrier, a dispersion aid such as a pigment derivative, a resin-type dispersant, and a surfactant can be appropriately used. The dispersion aid is excellent in dispersion of the colorant and has a large effect of preventing reaggregation of the colorant after dispersion. Therefore, a dispersion composition is used to disperse the colorant in the colorant carrier using the dispersion aid. When used, a color filter having a high spectral transmittance can be obtained.

  Examples of the dye derivative include a compound obtained by introducing a basic substituent, an acidic substituent, or a phthalimidomethyl group which may have a substituent into an organic pigment, anthraquinone, acridone, or triazine. 63-305173, JP-B-57-15620, JP-B-59-40172, JP-B-63-17102, JP-B-5-9469, etc. can be used. These can be used alone or in combination of two or more.

  The blending amount of the pigment derivative is preferably 0.5% by weight or more, more preferably 1% by weight or more, and most preferably 3% by weight or more with respect to 100% by weight of the colorant from the viewpoint of improving dispersibility. Further, from the viewpoint of heat resistance and light resistance, it is preferably 40% by weight or less, and most preferably 35% by weight or less with respect to 100% by weight of the colorant.

  The resin-type dispersant has a pigment-affinity part having a property of adsorbing to the colorant and a part compatible with the colorant carrier, and adsorbs to the colorant to stabilize dispersion in the colorant carrier. It works. Specific examples of resin-type dispersants include polycarboxylic acid esters such as polyurethane and polyacrylate, unsaturated polyamides, polycarboxylic acids, polycarboxylic acid (partial) amine salts, polycarboxylic acid ammonium salts, and polycarboxylic acid alkylamine salts. , Polysiloxane, long-chain polyaminoamide phosphate, hydroxyl group-containing polycarboxylic acid ester, modified products thereof, amides formed by reaction of poly (lower alkyleneimine) and polyester having a free carboxyl group, and salts thereof Oil-soluble dispersants such as, (meth) acrylic acid-styrene copolymer, (meth) acrylic acid- (meth) acrylic acid ester copolymer, styrene-maleic acid copolymer, polyvinyl alcohol, polyvinylpyrrolidone, etc. Resin, water-soluble polymer, polyester, modified poly Acrylate-based, ethylene oxide / propylene oxide adduct, phosphoric ester or the like is used, they may be used alone or in combination, it is not necessarily limited thereto.

  Commercially available resin-type dispersants include Disperbyk-101, 103, 107, 108, 110, 111, 116, 130, 140, 154, 161, 162, 163, 164, 165, 166, 167 manufactured by Big Chemie Japan. 168, 170, 171, 174, 180, 181, 182, 183, 184, 185, 190, 2000, 2001, 2009, 2010, 2020, 2025, 2050, 2070, 2095, 2150, 2155, 2163, 2164 or Anti -Terra-U, 203, 204, or BYK-P104, P104S, 220S, 6919 or Lactimon, Lactimon-WS or Bykumen, etc., SOLPERSE-3000, 9000, 1 manufactured by Lubrizol Japan 000, 13240, 13650, 13940, 16000, 17000, 18000, 20000, 21000, 24000, 26000, 27000, 28000, 31845, 32000, 32500, 32550, 33500, 32600, 34750, 35100, 36600, 38500, 41000, 41090, 53095, 55000, 56000, 76500, etc., EFKA-46, 47, 48, 452, 4008, 4009, 4010, 4015, 4020, 4047, 4050, 4055, 4060, 4080, 4400, 4401, 4402, manufactured by BASF Japan 4403, 4406, 4408, 4300, 4310, 4320, 4330, 4340, 450, 451, 453, 4540, 4550, 456 , 4800,5010,5065,5066,5070,7500,7554,1101,120,150,1501,1502,1503, etc., Ajinomoto Fine-Techno Co., Ltd. of AJISPER PA111, PB711, PB821, PB822, PB824, and the like.

  Surfactants include sodium lauryl sulfate, polyoxyethylene alkyl ether sulfate, sodium dodecylbenzene sulfonate, alkali salt of styrene-acrylic acid copolymer, sodium stearate, sodium alkyl naphthalene sulfonate, sodium alkyl diphenyl ether disulfonate Anionic surfactants such as lauryl sulfate monoethanolamine, lauryl sulfate triethanolamine, ammonium lauryl sulfate, monoethanolamine stearate, monoethanolamine of styrene-acrylic acid copolymer, polyoxyethylene alkyl ether phosphate; Polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene nonylphenyl ether, polyoxyethylene Nonionic surfactants such as alkyl ether phosphates, polyoxyethylene sorbitan monostearate and polyethylene glycol monolaurate; chaotic surfactants such as alkyl quaternary ammonium salts and their ethylene oxide adducts; alkyldimethylamino Examples include amphoteric surfactants such as alkylbetaines such as betaine acetate and alkylimidazolines, and these can be used alone or in admixture of two or more, but are not necessarily limited thereto.

  When a resin-type dispersant and a surfactant are added, the amount is preferably 0.1 to 55% by weight, more preferably 0.1 to 45% by weight with respect to 100% by weight of the colorant. When the blending amount of the resin type dispersant and the surfactant is less than 0.1% by weight, it is difficult to obtain the added effect. When the blending amount is more than 55% by weight, the dispersion is affected by an excessive dispersant. May affect.

<Removal of coarse particles>
The colored composition of the present invention is mixed with coarse particles of 5 μm or more, preferably coarse particles of 1 μm or more, more preferably coarse particles of 0.5 μm or more, by means of centrifugation, sintered filter, membrane filter or the like. It is preferable to remove dust. Thus, it is preferable that a coloring composition does not contain a particle | grain of 0.5 micrometer or more substantially. More preferably, it is 0.3 μm or less.
<Color filter>
The color filter for organic EL display devices of the present invention will be described.
The color filter of the present invention comprises at least one red filter segment, at least one green filter segment, and at least one blue filter segment, and at least one blue filter segment is made of the blue coloring composition of the present invention. Preferably there is.

In addition, the blue filter segment of the present invention has peak wavelengths (λ ₁ ) and (λ ₂ ) at which the emission intensity is maximized in at least the wavelength range of 430 nm to 485 nm and the wavelength range of 560 nm to 620 nm, and the wavelength λ ₁ The ratio (I ₂ / I ₁ ) of the emission intensity I ₁ and the emission intensity I _{2 at} the wavelength λ ₂ was measured using a white organic EL light source having an emission spectrum of 0.4 or more and 0.9 or less. When the chromaticity coordinates in the XYZ color system of the colored film satisfy x ≦ 0.160 and y ≦ 0.100, the thickness of the colored film is preferably less than 3.5 μm.
By satisfying this requirement, it is possible to achieve a color display device that can satisfy two characteristics of high brightness and high purity and can achieve a high NTSC ratio.

  Moreover, the red coloring composition which forms a red filter segment can be produced similarly to the blue coloring composition described above by replacing with a red pigment, a yellow pigment or a dye. The same applies to the green coloring composition forming the green filter segment.

  The red filter segment can be formed using a normal red coloring composition comprising a red pigment and a colorant carrier. Examples of the red coloring composition include C.I. I. Pigment Red 7, 14, 41, 48: 1, 48: 2, 48: 3, 48: 4, 57: 1, 81, 81: 1, 81: 2, 81: 3, 81: 4, 122, 146, 168, 169, 177, 178, 179, 184, 185, 187, 200, 202, 208, 210, 242, 246, 254, 255, 264, 269, 270, 272, 273, 274, 276, 277, 278, Red pigments such as 279, 280, 281, 282, 283, 284, 285, 286, or 287 are used. Further, a basic dye or a salt-forming compound of an acid dye exhibiting a red color can also be used.

  The red coloring composition includes C.I. I. Pigment orange 43, 71, or 73, and / or C.I. I. Pigment Yellow 1, 2, 3, 4, 5, 6, 10, 12, 13, 14, 15, 16, 17, 18, 24, 31, 32, 34, 35, 35: 1, 36, 36: 1, 37, 37: 1, 40, 42, 43, 53, 55, 60, 61, 62, 63, 65, 73, 74, 77, 81, 83, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 123, 126, 127, 128, 129, 138, 139, 147, 150, 151, 152, 153, 154, 155, 156, 161, 162, 164, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 179, 180, 181, 82,185,187,188,193,194,198,199,213,214,218,219,220, or may be used in combination of a yellow pigment 221, and the like. In addition, a salt forming compound of a basic dye or an acid dye that exhibits orange and / or yellow can be used.

  In the present invention, in order to realize high brightness and a wide color display area in consideration of optimization of the red filter segment with the white organic EL light source, at least C.I. I. Pigment red 177, C.I. I. Pigment red 179, C.I. I. Pigment red 254 and C.I. I. It is preferable to include at least one red pigment selected from the group consisting of CI Pigment Red 269. The reason why it is preferable to use these pigments in the red filter segment is that the high coloring power of these pigments is effective in developing a wide color display region.

  The green filter segment can be formed using a normal green coloring composition. Examples of the green coloring composition include C.I. I. It is a composition obtained by using a green pigment such as CI Pigment Green 7, 10, 36, 37, or 58. Green coloring compositions include C.I. I. Pigment Yellow 1, 2, 3, 4, 5, 6, 10, 12, 13, 14, 15, 16, 17, 18, 24, 31, 32, 34, 35, 35: 1, 36, 36: 1, 37, 37: 1, 40, 42, 43, 53, 55, 60, 61, 62, 63, 65, 73, 74, 77, 81, 83, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 123, 126, 127, 128, 129, 138, 139, 147, 150, 151, 152, 153, 154, 155, 156, 161, 162, 164, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 179, 180, 181, 82,185,187,188,193,194,198,199,213, or a yellow pigment 214 and the like can be used in combination.

  Examples of blue pigments that can be used in combination with the green filter segment include C.I. I. Pigment Blue 15: 3, 15: 4, and aluminum phthalocyanine pigments may be mentioned, but are not limited thereto. A preferable blue pigment to be used in combination is an aluminum phthalocyanine pigment from the viewpoint of brightness. The aluminum phthalocyanine pigment is not particularly limited as long as it has a structure in which trivalent aluminum is coordinated at the center of the phthalocyanine ring.

  As a pigment for the green filter segment, C.I. I. Pigment Green 7 or C.I. I. Pigment Green 58 and yellow pigment include C.I. I. Pigment yellow 139, C.I. I. Pigment yellow 150 and C.I. I. When at least one yellow pigment or blue pigment selected from CI Pigment Yellow 185 contains an aluminum phthalocyanine pigment, the pigment has a high coloring power, can be thinned, and has high brightness (Y value). This is preferable because it can be performed.

The filter segment has peak wavelengths (λ ₁ ) and (λ ₂ ) at which the emission intensity is maximized in at least the wavelength range of 430 nm to 485 nm and the wavelength range of 560 nm to 620 nm, and the emission intensity I at the wavelength λ ₁ . ₁ for each color when a white organic EL light source having a spectral characteristic in which the ratio (I ₂ / I ₁ ) of the emission intensity I _{2 at} the wavelength λ ₂ is 0.4 or more and 0.9 or less is used. The chromaticity characteristics of the above are preferable because the color reproducibility as a color display device is enhanced.

The ratio (I ₂ / I ₁ ) of the emission intensity I ₂ of such an emission spectrum is 0.4 or more and 0.9 or less, preferably 0.5 or more and 0.8 or less, more preferably 0.5 or more and 0. By satisfying a specific chromaticity characteristic under any of these conditions within a range of 0.7, the quality required for a color filter for an organic EL display device such as an NTSC ratio can be achieved.

The color filter for an organic EL display device of the present invention has peak wavelengths (λ ₁ ) and (λ ₂ ) at which the emission intensity is maximized in a wavelength range of 430 nm to 485 nm and a wavelength range of 560 nm to 620 nm. _{When a} white organic EL light source having a spectral characteristic in which the ratio (I ₂ / I ₁ ) of the emission intensity I _{1 at 1} and the emission intensity I _{2 at} the wavelength λ ₂ is 0.4 or more and 0.9 or less is used, When the chromaticity coordinates in the XYZ color system of the colored film are (xR, yR), (xG, yG), and (xB, yB), the area of the triangle surrounded by these three points is red (0. 67, 0.33), green (0.21, 0.71), and blue (0.14, 0.08), the color reproducibility as a color display device when the area is 75% or more. Is preferable because of high.

  As the substrate, glass plates such as soda lime glass, low alkali borosilicate glass and non-alkali aluminoborosilicate glass, and resin plates such as polycarbonate, polymethyl methacrylate, and polyethylene terephthalate are used. In addition, a transparent electrode made of indium oxide, tin oxide, or the like may be formed on the surface of the glass plate or the resin plate in order to drive the liquid crystal after forming the panel.

<Color filter manufacturing method>
The color filter of the present invention can be produced by using a coloring composition by a printing method or a photolithography method.

  Formation of a colored film by a printing method can be performed by simply repeating printing and drying of a colored composition prepared as a printing ink, so that the color filter manufacturing method is low cost and excellent in mass productivity. Furthermore, it is possible to print a fine pattern having high dimensional accuracy and smoothness by the development of printing technology. In order to perform printing, it is preferable that the ink does not dry and solidify on the printing plate or on the blanket. Control of ink fluidity on a printing press is also important, and ink viscosity can be adjusted with a dispersant or extender pigment.

  When forming a colored film by photolithography, the colored composition prepared as a solvent developing type or alkali developing type colored resist material is applied on a transparent substrate, such as spray coating, spin coating, slit coating, roll coating, etc. By a method, it applies so that a dry film thickness may be set to 0.2-5 micrometers. If necessary, the dried film is exposed to ultraviolet light through a mask having a predetermined pattern provided in contact with or non-contact with the film. Then, after immersing in a solvent or alkali developer or spraying the developer by spraying or the like to remove the uncured portion to form a desired pattern, the same operation is repeated for other colors to produce a color filter. be able to. Furthermore, in order to accelerate the polymerization of the colored resist material, heating can be performed as necessary. According to the photolithography method, a color filter with higher accuracy than the above printing method can be manufactured.

In development, an aqueous solution such as sodium carbonate or sodium hydroxide is used as an alkali developer, and an organic alkali such as dimethylbenzylamine or triethanolamine can also be used. Moreover, an antifoamer and surfactant can also be added to a developing solution.
In order to increase the UV exposure sensitivity, after coating and drying the colored resist, a water-soluble or alkaline water-soluble resin such as polyvinyl alcohol or a water-soluble acrylic resin is applied and dried to form a film that prevents polymerization inhibition by oxygen. Thereafter, ultraviolet exposure can also be performed.

  The color filter of the present invention can be produced by an electrodeposition method, a transfer method, an ink jet method or the like in addition to the above method, but the colored composition of the present invention can be used in any method. The electrodeposition method is a method for manufacturing a color filter by using a transparent conductive film formed on a substrate and forming a colored film on the transparent conductive film by electrodeposition of colloidal particles. . The transfer method is a method in which a colored film is formed in advance on the surface of a peelable transfer base sheet, and this colored film is transferred to a desired substrate.

If the black matrix is formed in advance before forming the filter segment on the transparent substrate or the reflective substrate, the contrast of the display panel can be further increased. As the black matrix, a chromium, chromium / chromium oxide multilayer film, an inorganic film such as titanium nitride, or a resin film in which a light-shielding agent is dispersed is used, but is not limited thereto. Further, a thin film transistor (TFT) may be formed in advance on the transparent substrate or the reflective substrate, and then a filter segment may be formed. By forming the filter segment on the TFT substrate, the aperture ratio of the panel can be increased and the luminance can be improved.
On the color filter of the present invention, an overcoat film or a transparent conductive film is formed as necessary.

<Organic EL display device>
The organic EL display device in the present invention contains a colorant, a binder resin, a photopolymerizable monomer, and a photopolymerization initiator, and the colorant has a triarylmethane basic dye and an anionic group ( A display device having a color filter formed of a blue coloring composition containing a salt-forming compound with A) and a white light-emitting organic EL element (hereinafter referred to as an organic EL element) as a light source is preferable.

(Organic EL element (white light-emitting organic EL element))
The organic EL element used in the present invention has peak wavelengths (λ ₁ ) and (λ ₂ ) at which the emission intensity is maximized in at least a wavelength range of 430 nm to 485 nm and a wavelength range of 560 nm to 620 nm, and a wavelength of λ the ratio of the emission intensity _{I 2} in the light-emitting intensity _{I 1} and the wavelength lambda ₂ in _{1 (I} 2 / _{I 1)} is preferably has an emission spectrum is 0.4 to 0.9, 0.5 More preferably, it is 0.8 or less. Most preferably, it is 0.5 or more and 0.7 or less.
When the emission intensity I ₂ ratio (I ₂ / I ₁ ) has an emission spectrum of 0.4 to 0.9, it is preferable because high brightness and wide color reproducibility can be obtained.

Furthermore, it is preferable that the light emission intensity has a maximum value or a shoulder in the wavelength range of 530 nm to 650 nm.
The wavelength range of 430 nm to 485 nm is preferable when the color display device including the color filter displays blue with good color reproducibility. More preferably, it is the range of 430 nm-475 nm.
By using the organic EL element satisfying these configurations and the color filter, a color display device having a wide color reproduction region and high brightness can be obtained.

  An organic EL element is comprised from the element which formed the organic layer of one layer or a multilayer between the anode and the cathode. Here, the single-layer organic EL element refers to an element composed of only a light emitting layer between an anode and a cathode, while the multilayer organic EL element refers to a hole or a hole in the light emitting layer in addition to the light emitting layer. Hole injection layer, hole transport layer, hole blocking layer, electron injection for the purpose of facilitating electron injection and smooth recombination of holes and electrons in the light emitting layer It refers to a laminate of layers. Therefore, typical element configurations of the multilayer organic EL element include (1) anode / hole injection layer / light emitting layer / cathode, and (2) anode / hole injection layer / hole transport layer / light emitting layer / cathode. (3) Anode / hole injection layer / light emitting layer / electron injection layer / cathode, (4) Anode / hole injection layer / hole transport layer / light emitting layer / electron injection layer / cathode, (5) Anode / positive Hole injection layer / light emitting layer / hole blocking layer / electron injection layer / cathode, (6) anode / hole injection layer / hole transport layer / light emitting layer / hole blocking layer / electron injection layer / cathode, (7) Examples include an anode / light emitting layer / hole blocking layer / electron injection layer / cathode, and (8) an element configuration laminated in a multilayer structure such as anode / light emitting layer / electron injection layer / cathode. However, the organic EL element used in the present invention is not limited to these.

  Moreover, each organic layer mentioned above may be formed by the layer structure of 2 or more layers, respectively, and several layers may be laminated | stacked repeatedly. As such an example, an element configuration called “multi-photon emission” in which a part of the multilayer organic EL element is multilayered has been proposed in recent years for the purpose of improving light extraction efficiency. For example, in an organic EL device composed of a glass substrate / anode / hole transport layer / electron transporting light emitting layer / electron injection layer / charge generating layer / light emitting unit / cathode, the charge generating layer and the light emitting unit There is a method of laminating a plurality of portions.

  First, materials that can be used for each of these layers are specifically exemplified. However, materials that can be used in the present invention are not limited to these.

As a material that can be used for the hole injection layer, a phthalocyanine-based compound is effective, and copper phthalocyanine (abbreviation: CuPc), vanadyl phthalocyanine (abbreviation: VOPc), or the like can be used. There are also materials obtained by chemically doping conductive polymer compounds, such as polyethylenedioxythiophene (abbreviation: PEDOT) doped with polystyrene sulfonic acid (abbreviation: PSS), polyaniline (abbreviation: PANI), or the like. You can also. Further, thin films of inorganic semiconductors such as molybdenum oxide (abbreviation: MoO _x ), vanadium oxide (abbreviation: VO _x ), nickel oxide (abbreviation: NiO _x ), and inorganic insulation such as aluminum oxide (abbreviation: Al ₂ O ₃ ) An ultra-thin body film is also effective. In addition, 4,4 ′, 4 ″ -tris (N, N-diphenyl-amino) -triphenylamine (abbreviation: TDATA), 4,4 ′, 4 ″ -tris [N- (3-methylphenyl) -N-phenyl-amino] -triphenylamine (abbreviation: MTDATA), N, N'-bis (3-methylphenyl) -N, N'-diphenyl-1,1'-biphenyl-4,4'-diamine (Abbreviation: TPD), 4,4′-bis [N- (1-naphthyl) -N-phenyl-amino] -biphenyl (abbreviation: α-NTPD), 4,4′-bis [N- (4- ( Aromatic amine compounds such as N, N-di-m-tolyl) amino) phenyl-N-phenylamino] biphenyl (abbreviation: DNTPD) can also be used. Further, a substance showing acceptability with respect to these aromatic amine compounds may be added to the aromatic amine compound, specifically, 2,3,5,6-tetrafluoro-7 which is an acceptor for VOPc. , 7,8,8-tetracyanoquinodimethane (abbreviation: F4-TCNQ), or α-NPD to which acceptor MoO _x is added may be used.

  As a material that can be used for the hole transport layer, an aromatic amine compound is preferable, and TDATA, MTDATA, TPD, α-NPD, DNTPD, and the like described for the hole injection material can be used.

  Examples of the electron transport material that can be used for the electron transport layer include tris (8-quinolinolato) aluminum (abbreviation: Alq3), tris (4-methyl-8-quinolinolato) aluminum (abbreviation: Almq3), bis (10-hydroxybenzo). [H] -quinolinato) beryllium (abbreviation: BeBq2), bis (2-methyl-8-quinolinolato) (4-phenylphenolato) aluminum (abbreviation: BAlq), bis [2- (2-hydroxyphenyl) benzoxazola And metal complexes such as zinc (substantially: Zn (BOX) 2) and bis [2- (2-hydroxyphenyl) benzothiazolate] zinc (substantially: Zn (BTZ) 2). In addition to metal complexes, 2- (4-biphenylyl) -5- (4-tert-butylphenyl) -1,3,4-oxadiazole (abbreviation: PBD), 1,3-bis [5- Oxadiazole derivatives such as (p-tert-butylphenyl) -1,3,4-oxadiazol-2-yl] benzene (abbreviation: OXD-7), 3- (4-tert-butylphenyl) -4 -Phenyl-5- (4-biphenylyl) -1,2,4-triazole (abbreviation: TAZ), 3- (4-tert-butylphenyl) -4- (4-ethylphenyl) -5- (4-biphenylyl) ) -1,2,4-triazole (abbreviation: p-EtTA Z) and other triazole derivatives, 2,2 ′, 2 ″-(1,3,5-benzenetriyl) tris [1-phenyl-1H-benz Imidazole] (abbreviated Imidazole derivatives such as TPBI), bathophenanthroline (abbreviation: can be used phenanthroline derivatives such as BCP): BPhen), bathocuproine (abbreviation.

Materials that can be used for the electron injection layer include Alq3, Almq3, BeBq2, BAlq, Zn (BOX) ₂ , Zn (BTZ) ₂ , PBD, OXD-7, TAZ, p-EtTAZ, TPBI, Electron transport materials such as BPhen and BCP can be used. In addition, an ultra-thin film of an insulator such as an alkali metal halide such as LiF or CsF, an alkaline earth halide such as CaF ₂ , or an alkali metal oxide such as Li ₂ O is often used. In addition, alkali metal complexes such as lithium acetylacetonate (abbreviation: Li (acac)) and 8-quinolinolato-lithium (abbreviation: Liq) are also effective. Further, a substance exhibiting a donor property with respect to these electron injection materials may be added to the electron injection material, and alkali metals, alkaline earth metals, rare earth metals, and the like can be used as donors. Specifically, a material obtained by adding lithium as a donor to BCP or a material obtained by adding lithium as a donor to Alq ₃ can be used.

  Furthermore, a hole blocking material that can prevent holes from passing through the light emitting layer from reaching the electron injection layer and form a layer having excellent thin film formability is used for the hole blocking layer. Examples of such hole blocking materials include aluminum complex compounds such as bis (8-hydroxyquinolinato) (4-phenylphenolato) aluminum, and bis (2-methyl-8-hydroxyquinolina). -To) (4-phenylphenolato) gallium complex compounds such as gallium, nitrogen-containing condensed aromatic compounds such as 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (abbreviation: BCP) Can be mentioned.

  Although there is no restriction | limiting in particular as a light emitting layer which obtains white light emission, For example, the following can be used. That is, the energy level of each layer of the organic EL laminated structure is defined and light is emitted using tunnel injection (European Patent No. 0390551). Similarly, a white light-emitting element is an example of an element using tunnel injection. What is described (JP-A-3-230584), a light-emitting layer having a two-layer structure (JP-A-2-220390 and JP-A-2-216790), and a plurality of light-emitting layers A layered material composed of materials having different emission wavelengths (Japanese Patent Laid-Open No. 4-51491), a blue light emitter (fluorescent peak 380 to 480 nm) and a green light emitter (480 to 580 nm), Further, a red phosphor is included (Japanese Patent Laid-Open No. 6-207170), the blue light emitting layer contains a blue fluorescent dye, and the green light emitting layer is a red fluorescent dye. It has contained area, such as construction of those (JP-A-7-142169) and the like further containing a green phosphor.

  Further, as the light emitting material used in the present invention, a material known as a conventional light emitting material may be used. Examples of compounds suitably used for blue, green, orange to red light emission are shown below. However, the light emitting material is not limited to those specifically exemplified below.

  Blue light emission can be obtained by using perylene, 2,5,8,11-tetra-t-butylperylene (abbreviation: TBP), 9,10-diphenylanthracene derivative, or the like as a guest material, for example. Further, styrylarylene derivatives such as 4,4′-bis (2,2-diphenylvinyl) biphenyl (abbreviation: DPVBi), 9,10-di-2-naphthylanthracene (abbreviation: DNA), 9,10-bis It can also be obtained from an anthracene derivative such as (2-naphthyl) -2-tert-butylanthracene (abbreviation: t-BuDNA). A polymer such as poly (9,9-dioctylfluorene) may also be used.

  Further preferred specific examples are shown in Table 1.

Green light is emitted from coumarin dyes such as coumarin 30 and coumarin 6, bis [2- (2,4-difluorophenyl) pyridinato] picolinatoiridium (abbreviation: FIrpic), bis (2-phenylpyridinato) acetyl. It can be obtained by using acetonatoiridium (abbreviation: Ir (ppy) (acac)) or the like as a guest material. Tris (8-hydroxyquinoline) aluminum (abbreviation: Alq ₃ ), BAlq, Zn (BTZ), bis (
It can also be obtained from a metal complex such as 2-methyl-8-quinolinolato) chlorogallium (substantially: Ga (mq) ₂ Cl). A polymer such as poly (p-phenylene vinylene) may also be used.

Further preferred specific examples are shown in Table 2.

  Light emission from orange to red is caused by rubrene, 4- (dicyanomethylene) -2- [p- (dimethylamino) styryl] -6-methyl-4H-pyran (abbreviation: DCM1), 4- (dicyanomethylene) -2- Methyl-6- (9-julolidyl) ethynyl-4H-pyran (abbreviation: DCM2), 4- (dicyanomethylene) -2,6-bis [p- (dimethylamino) styryl] -4H-pyran (abbreviation: BisDCM) Bis [2- (2-thienyl) pyridinato] acetylacetonatoiridium (abbreviation: Ir (thp) 2 (acac)), bis (2-phenylquinolinato) acetylacetonatoiridium (abbreviation: Ir (pq) (acac) )) Etc. as a guest material. It can also be obtained from a metal complex such as bis (8-quinolinolato) zinc (abbreviation: Znq2) or bis [2-cinnamoyl-8-quinolinolato] zinc (abbreviation: Znsq2). A polymer such as poly (2,5-dialkoxy-1,4-phenylenevinylene) may be used.

  Further preferred specific examples are shown in Table 3.

Furthermore, the material used for the anode of the organic EL device used in the present invention is preferably a material having a work function (4 eV or more) metal, alloy, electrically conductive compound or a mixture thereof as an electrode substance. Specific examples of such an electrode substance include metals such as Au, and conductive materials such as CuI, ITO, SNO ₂ , and ZNO. In order to form this anode, a thin film can be formed from these electrode materials by a method such as vapor deposition or sputtering. The anode desirably has such a characteristic that when light emitted from the light emitting layer is extracted from the anode, the transmittance of the anode for light emission is greater than 10%. The sheet resistance of the anode is preferably several hundred Ω / cm ² or less. Further, although the film thickness of the anode depends on the material, it is usually selected in the range of 10 nm to 1 μm, preferably 10 to 200 nm.

The material used for the cathode of the organic EL device used in the present invention is a material having a work function (4 eV or less) metal, alloy, electrically conductive compound and a mixture thereof as an electrode substance. Specific examples of such electrode materials include sodium, sodium-potassium alloy, magnesium, lithium, magnesium / silver alloy, aluminum / aluminum oxide, aluminum / lithium alloy, indium, and rare earth metals. This cathode can be produced by forming a thin film of these electrode materials by a method such as vapor deposition or sputtering. Here, when light emitted from the light-emitting layer is extracted from the cathode, the transmittance of the cathode for light emission is preferably greater than 10%. Further, the sheet resistance as the cathode is preferably several hundred Ω / cm ² or less, and the film thickness is usually 10 nm to 1 μm, preferably 50 to 200 Nm.

  Regarding the method for producing the organic EL device used in the present invention, an anode, a light emitting layer, a hole injection layer as necessary, and an electron injection layer as necessary are formed by the above materials and methods, and finally a cathode is formed. What is necessary is just to form. Moreover, an organic EL element can also be produced from the cathode to the anode in the reverse order.

  This organic EL element is manufactured on a translucent substrate. This translucent substrate is a substrate that supports the organic EL element, and for the translucency, it is desirable that the transmittance of light in the visible region of 400 to 700 nm is 50% or more, preferably 90% or more, Further, it is preferable to use a smooth substrate.

  These substrates have mechanical and thermal strengths and are not particularly limited as long as they are transparent. For example, glass plates, synthetic resin plates and the like are preferably used. Examples of the glass plate include plates made of soda-lime glass, barium / strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, barium borosilicate glass, quartz, and the like. Examples of the synthetic resin plate include plates such as polycarbonate resin, acrylic resin, polyethylene terephthalate resin, polyether sulfide resin, and polysulfone resin.

  As a method for forming each layer of the organic EL element used in the present invention, a dry film forming method such as vacuum deposition, electron beam beam irradiation, sputtering, plasma, ion plating, or spin coating, dipping, flow coating, inkjet A wet film-forming method such as a method, a method of vapor-depositing a light emitter on a donor film, JP-A-2002-534882, and S. T.A. Lee, et al. , Proceedings of SID'02, p. LITI (Laser Induced Thermal Imaging) method described in 784 (2002), printing (offset printing, flexographic printing, gravure printing, screen printing), inkjet, and the like can also be applied.

  The organic layer is particularly preferably a molecular deposited film. Here, the molecular deposited film is a thin film formed by deposition from a material compound in a gas phase state or a film formed by solidifying from a material compound in a solution state or a liquid phase state. Can be classified from a thin film (accumulated film) formed by the LB method according to a difference in an agglomerated structure and a higher-order structure and a functional difference resulting therefrom. Also, as disclosed in JP-A-57-51781, a binder such as a resin and a material compound are dissolved in a solvent to form a solution, and then this is thinned by a spin coat method or the like. Also, an organic layer can be formed. The film thickness of each layer is not particularly limited, but if the film thickness is too thick, a large applied voltage is required to obtain a constant light output, resulting in poor efficiency. Conversely, if the film thickness is too thin, the pinhole is used. Or the like, and even when an electric field is applied, it is difficult to obtain sufficient light emission luminance. Accordingly, the thickness of each layer is suitably in the range of 1 nm to 1 μm, but more preferably in the range of 10 nm to 0.2 μm.

  Further, in order to improve the stability of the organic EL element with respect to temperature, humidity, atmosphere and the like, a protective layer may be provided on the surface of the element, or the entire element may be covered or sealed with a resin or the like. In particular, when the entire element is covered or sealed, a photocurable resin that is cured by light is preferably used.

  The current applied to the organic EL element used in the present invention is usually a direct current, but a pulse current or an alternating current may be used. The current value and the voltage value are not particularly limited as long as they are within the range that does not destroy the element. However, considering the power consumption and life of the element, it is desirable to efficiently emit light with as little electrical energy as possible.

  The driving method of the organic EL element used in the present invention can be driven not only by the passive matrix method but also by the active matrix method. Further, the method for extracting light from the organic EL device of the present invention is applicable not only to the method of bottom emission for extracting light from the anode side but also to the method of top emission for extracting light from the cathode side. These methods and techniques are described in Shinji Kido, “All about organic EL”, published by Nihon Jitsugyo Shuppansha (published in 2003).

  The main method of the full color method of the organic EL element used in the present invention is a color filter method. The color filter method uses a white light emitting organic EL element to extract light of three primary colors through a color filter. In addition to these three primary colors, a part of white light is extracted as it is and used for light emission. In addition, the luminous efficiency of the entire device can be increased.

  Furthermore, the organic EL element used in the present invention may adopt a microcavity structure. This is because the organic EL device has a structure in which the light emitting layer is sandwiched between the anode and the cathode, and the emitted light causes multiple interference between the anode and the cathode, but the reflectance and transmission of the anode and the cathode This is a technology that actively uses the multiple interference effect and controls the emission wavelength extracted from the device by appropriately selecting the optical characteristics such as the rate and the film thickness of the organic layer sandwiched between them. . Thereby, it is also possible to improve the emission chromaticity. For the mechanism of this multiple interference effect, see J.A. Yamada et al., AM-LCD Digest of Technical Papers, OD-2, p. 77-80 (2002).

  As described above, an RGB color filter layer is produced in parallel with a glass substrate, and a light emitting layer (backlight) produced using the ITO electrode layer and the organic EL element is placed on the color filter layer. As a result, color display is possible, and a color display device is obtained. At this time, a color display device having a high contrast ratio can be realized by controlling the current flow during light emission by the TFT.

  Hereinafter, the present invention will be described based on examples, but the present invention is not limited thereto. In the examples, “parts” and “%” represent “parts by weight” and “% by weight”, respectively.

  First, the measurement method of the average primary particle diameter of the pigment, the polymerization average molecular weight (Mw) of the resin, and the acid value will be described.

(Average primary particle diameter of pigment)
The average primary particle diameter of the pigment was measured by a method of directly measuring the size of primary particles from an electron micrograph using a transmission electron microscope (TEM). Specifically, the minor axis diameter and major axis diameter of the primary particles of each pigment were measured, and the average was taken as the particle diameter of the primary pigment particles. Next, for 100 or more pigment particles, the volume (weight) of each particle was obtained by approximating the obtained particle size cube, and the volume average particle size was defined as the average primary particle size.

(Weight average molecular weight of resin (Mw))
The weight average molecular weight (Mw) of the resin was measured in terms of polystyrene measured using TSKgel column (manufactured by Tosoh Corporation) and GPC equipped with RI detector (manufactured by Tosoh Corporation, HLC-8120GPC) using THF as a developing solvent. It is a weight average molecular weight (Mw).

(Resin acid value)
To 0.5 to 1.0 part of the resin solution, 80 ml of acetone and 10 ml of water are added and stirred to dissolve uniformly, and a 0.1 mol / L KOH aqueous solution is used as a titrant and an automatic titrator (“COM-555”). Titration using Hiranuma Sangyo Co., Ltd.) and the acid value of the resin solution was measured. Then, the acid value per solid content of the resin was calculated from the acid value of the resin solution and the solid content concentration of the resin solution.

  Subsequently, a production example of an organic EL element, a binder resin solution, a salt forming resin for xanthene dyes, a resin (a2) having a sulfate group represented by the general formula (1) in a side chain, and a triarylmethane salt forming Compound, Triarylmethane Colorant-Containing Resin Solution, Xanthene Dye, Xanthene Dye-Containing Solution, Other Colorant, Pigment Dispersion, Photosensitive Red Colored Composition, and Method for Producing Photosensitive Green Colored Composition explain.

<Example of manufacturing organic EL element>
The production example of the organic EL element used as a white light source is specifically shown below. In the production examples of organic EL elements, all the mixing ratios are weight ratios unless otherwise specified. Vapor deposition (vacuum deposition) was performed in a vacuum of 10 ⁻⁶ Torr and under conditions without temperature control such as substrate heating and cooling. In the evaluation of the light emission characteristics of the element, the characteristics of an organic EL element having an electrode area of 2 mm × 2 mm were measured.

(Manufacture of organic EL element 1 (EL-1))
After the cleaned glass plate with the ITO electrode was treated with oxygen plasma for about 1 minute, 4,4′-bis [N- (1-naphthyl) -N-phenylamino] biphenyl (α-NPD) was vacuum deposited, A hole injection layer having a thickness of 50 nm was obtained. On this hole injection layer, the compound (R-2) and the compound (R-3) shown in Table 3 are vacuum-deposited at a composition ratio of 100: 0.5 to form a first light emitting layer having a thickness of 20 nm. Further, the compound (B-3) and the compound (B-4) shown in Table 1 were co-evaporated at a composition ratio of 100: 2 to form a second light emitting layer having a thickness of 40 nm. On this light emitting layer, a tris (8-hydroxyquinoline) aluminum complex is vacuum-deposited to form a third light emitting layer having a film thickness of 30 nm. Further, α-NPD is 5 nm, and tris (8-hydroxyquinoline) aluminum complex is formed. An electron injection layer having a thickness of 20 nm was formed by vacuum evaporation, and an electrode was formed thereon by vapor-depositing lithium fluoride with a thickness of 1 nm and further aluminum with a thickness of 300 nm to obtain an organic EL element 1.

Furthermore, in order to protect this organic EL element from the surrounding environment, it was hermetically sealed in a dry glow box filled with pure nitrogen. This device obtained white light emission with a direct current voltage of 5 V and an emission luminance of 1500 (cd / m ² ), a maximum emission luminance of 68000 (cd / m ² ), and an emission efficiency of 3.1 (lm / W). In FIG. 1, the emission spectrum of the obtained organic EL element 1 (EL-1) is shown.

The peak wavelengths (λ ₁ ) and (λ ₂ ) at which the emission intensity becomes maximum in the range of 430 nm to 485 nm and the wavelength range of 560 nm to 620 nm of the organic EL element (EL-1), and the emission intensity I _{1 at the} wavelength λ ₁ . Table 4 shows the ratio (I ₂ / I ₁ ) of the emission intensity I _{2 at the} wavelength λ ₂ .

  Next, the binder resin used for the Example and the comparative example, and the manufacturing method of a salt-forming compound are demonstrated.

<Method for producing binder-resin solution>
(Acrylic resin solution (R-1))
A reaction vessel equipped with a separable four-necked flask equipped with a thermometer, a cooling tube, a nitrogen gas introduction tube, a dropping tube and a stirring device was charged with 196 parts of cyclohexanone, heated to 80 ° C., and purged with nitrogen in the reaction vessel. From the tube, 37.2 parts of n-butyl methacrylate, 12.9 parts of 2-hydroxyethyl methacrylate, 12.0 parts of methacrylic acid, paracumylphenol ethylene oxide modified acrylate (“Aronix M110” manufactured by Toagosei Co., Ltd.) 20.7 A mixture of 1.1 parts of 2,2′-azobisisobutyronitrile was added dropwise over 2 hours. After completion of dropping, the reaction was further continued for 3 hours to obtain an acrylic resin solution. After cooling to room temperature, about 2 parts of the resin solution was sampled, heated and dried at 180 ° C. for 20 minutes, and the nonvolatile content was measured. The methoxypropyl acetate was added to the previously synthesized resin solution so that the nonvolatile content was 20% by mass. Was added to prepare an acrylic resin solution (R-1). The weight average molecular weight (Mw) was 26000.

(Acrylic resin solution (R-2))
Place 100 parts of propylene glycol monomethyl ether acetate in a reaction vessel equipped with a thermometer, cooling tube, nitrogen gas inlet tube and stirrer in a separable four-necked flask, and heat to 120 ° C while injecting nitrogen gas into the vessel. A mixture of 5.2 parts of styrene, 35.5 parts of glycidyl methacrylate, 41.0 parts of dicyclopentanyl methacrylate, and 1.0 part of azobisisobutyronitrile was dropped over 2.5 hours from the dropping tube at a temperature to polymerize. Reaction was performed.
Next, the inside of the flask was purged with air, 0.3 parts of trisdimethylaminomethylphenol and 0.3 part of hydroquinone were added to 17.0 parts of acrylic acid, and the reaction was continued at 120 ° C. for 5 hours. The reaction was terminated when it reached 0.8, and a resin solution having a weight average molecular weight of about 12000 (measured by GPC) was obtained.
Further, 30.4 parts of tetrahydrophthalic anhydride and 0.5 part of triethylamine were added and reacted at 120 ° C. for 4 hours, and propylene glycol monomethyl ether acetate was added so that the non-volatile content was 20%. An acrylic resin solution (R-2), which is an energy ray curable resin having a bond, was obtained.

<Method for producing salt-forming resin for xanthene dye>
(Resin 1 having a cationic group in the side chain)
74.1 parts of isopropyl alcohol was charged into a four-necked separable flask equipped with a thermometer, a stirrer, a distillation tube, and a condenser, and the temperature was raised to 75 ° C. under a nitrogen stream. Separately, 33.2 parts of methyl methacrylate, 27.3 parts of n-butyl methacrylate, 27.3 parts of 2-ethylhexyl methacrylate, 12.2 parts of dimethylaminoethyl methyl chloride salt, and After making 15.6 parts of methyl ethyl ketone uniform, it was charged in a dropping funnel, attached to a four-necked separable flask, and dropped over 2 hours. Two hours after the completion of the dropwise addition, it was confirmed that the polymerization yield was 98% or more from the solid content and the weight average molecular weight (Mw) was 7420, and the mixture was cooled to 50 ° C. Thereafter, 72 parts of isopropyl alcohol was added to obtain Resin 1 having a cationic group in the side chain of 40% by weight of the resin component. The ammonium salt value of the obtained resin was 33 mgKOH / g.

(Resin 2 having a cationic group in the side chain)
74.1 parts of isopropyl alcohol was charged into a four-necked separable flask equipped with a thermometer, a stirrer, a distillation tube, and a condenser, and the temperature was raised to 75 ° C. under a nitrogen stream. Separately, 15.7 parts of methyl methacrylate, 27.3 parts of n-butyl methacrylate, 27.3 parts of 2-ethylhexyl methacrylate, 12.2 parts of dimethylaminoethyl methyl methacrylate salt, hydroxy After uniformizing 15.0 parts of ethyl methacrylate, 2.5 parts of methacrylic acid and 15.6 parts of methyl ethyl ketone, the mixture was charged into a dropping funnel, attached to a four-necked separable flask and dropped over 2 hours. . Two hours after the completion of the dropwise addition, it was confirmed that the polymerization yield was 98% or more from the solid content and the weight average molecular weight (Mw) was 7420, and the mixture was cooled to 50 ° C. Thereafter, 72 parts of isopropyl alcohol was added to obtain Resin 2 having a cationic group in the side chain of 40% by weight of the resin component. The ammonium salt value of the obtained resin was 33 mgKOH / g.

<Resin (a2) having a sulfate group represented by the general formula (1) in the side chain>
(Resin 1 having a sulfate group in the side chain))
75.0 parts of methanol was charged into a four-necked separable flask equipped with a thermometer, a stirrer, a distillation tube, and a condenser, and the temperature was raised to 68 ° C. under a nitrogen stream. Separately, 20.0 parts RS-3000 (manufactured by Sanyo Chemical Industries), 45.0 parts methyl methacrylate, 15.0 parts n-butyl methacrylate, 10.0 parts 2-ethylhexyl methacrylate, 10.0 parts hydroxyethyl methacrylate, 7.02 parts of 2,2′-azobis (2,4-dimethylvaleronitrile) and 23.0 parts of methyl ethyl ketone were homogenized and charged into a dropping funnel and attached to a four-necked separable flask over 2 hours. And dripped. Three hours after the completion of dropping, it was confirmed that the polymerization yield was 98% or more from the solid content and the weight average molecular weight (Mw) was 4730, and the mixture was cooled to 50 ° C. To this, 61.0 parts of ethanol was added, reacted at 50 ° C. for 2 hours, then heated to 80 ° C. over 1 hour, and further reacted for 2 hours. Thus, Resin 1 having a resin component of 39.0% by weight of sulfate groups in the side chain was obtained.

(Resin 2-7 having a sulfate group in the side chain)
Except having changed into the composition described in Table 5, and the compounding quantity (part by weight), it reacted on the same synthesis conditions as the resin 1 which has a sulfate group in a side chain. After completion of the reaction, dilution with methanol was performed to synthesize Resins 2 to 7 having a resin component having a sulfate group of 39.0 wt% in the side chain. Table 5 shows the weight average molecular weight (Mw) and the molecular weight distribution (Mw / Mn) of the resins 2 to 7 having a sulfate group in the side chain.

The ethylenically unsaturated monomer (a1-1) shown in Table 5 is shown below.
KH-10: Polyoxyethylene-1- (allyloxymethyl) alkyl ether ammonium sulfate (commercially available product, product name: Aqualon KH-10, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.)
KH-05: ammonium polyoxyethylene-1- (allyloxymethyl) alkyl ether sulfate (Daiichi Kogyo Seiyaku Co., Ltd., commercial name: Aqualon KH-05)
HS-10: Polyoxyethylene nonylpropenyl phenyl ether ammonium sulfate (commercially available from Daiichi Kogyo Seiyaku Co., Ltd., trade name: Aqualon HS-10)
RS-3000: Sodium polyoxyalkylene sulfate methacrylate (commercially available product, product name: Eleminol RS-3000 manufactured by Sanyo Chemical Industries)

<Method for Producing Triarylmethane Salt Formation Compound (A1)>
(Triarylmethane salt-forming compound (A1-1))
C. I. 12 parts of Basic Blue 7 (Tokyo Chemicals), 7.4 parts of sodium dodecyl sulfate (Tokyo Chemicals), 130 parts of dichloromethane and 200 parts of water were mixed and stirred at room temperature for 2 hours. Thereafter, the organic layer was extracted, washed with water, and the organic layer was concentrated under reduced pressure. And it dried with the 60 degreeC vacuum dryer, and obtained 14.7 parts of pigment | dyes (salt-forming compound (A1-1)). The yield was 84.8%.

(Triarylmethane salt-forming compound (A1-2))
C. I. 12 parts of Basic Blue 7 (Tokyo Kasei), 9.65 parts of sodium hexadecyl sulfate (containing 40% sodium stearyl sulfate, Tokyo Chemical), 130 parts of dichloromethane and 200 parts of water were mixed and stirred at room temperature for 2 hours. Thereafter, the organic layer was extracted, washed with water, and the organic layer was concentrated under reduced pressure. And it dried with the 60 degreeC vacuum dryer, and obtained 15.5 parts pigment | dye (salt-forming compound (A1-2)). The yield was 82.1%.

(Triarylmethane salt-forming compound (A1-3))
C. I. 12 parts of Basic Blue 7 (Tokyo Chemicals), 3.80 parts of sodium ethyl sulfate (Tokyo Chemicals), 130 parts of dichloromethane and 200 parts of water were mixed and stirred at room temperature for 2 hours. Thereafter, the organic layer was extracted, washed with water, and the organic layer was concentrated under reduced pressure. And it dried with the 60 degreeC vacuum dryer, and obtained 11.4 parts of pigment | dyes (salt-forming compound (A1-3)). The yield was 81.2%.

(Triarylmethane salt-forming compound (A1-4))
C. I. 12 parts of Basic Blue 26 (Tokyo Chemicals), 6.77 parts of sodium dodecyl sulfate (Tokyo Chemicals), 130 parts of dichloromethane and 200 parts of water were mixed and stirred at room temperature for 2 hours. Thereafter, the organic layer was extracted, washed with water, and the organic layer was concentrated under reduced pressure. And it dried with the 60 degreeC vacuum dryer, and obtained 14.8 parts pigment | dye (salt-forming compound (A1-4)). The yield was 87.6%.

(Triarylmethane salt-forming compound (A1-5))

[Synthesis of Compound 1]
To a mixture of 25 parts of 4-diethylaminobenzoic acid (Tokyo Chemicals) and 90 parts of toluene, 23 parts of thionyl chloride was added and stirred at 80 ° C. for 1 hour, followed by concentration under reduced pressure to obtain acid chloride. In a separate container, 20.4 parts of anhydrous aluminum chloride and 130 parts of 1,2-dichloroethane were added. After cooling in an ice bath, a solution having acid chloride dissolved in 60 parts of 1,2-dichloroethane was added dropwise. After the dropping, the mixture was stirred for 15 minutes, 21 parts of N, N-diethyl-m-toluidine (Tokyo Chemicals) was added dropwise, returned to room temperature, and stirred for 2 hours. Thereafter, the mixture was poured into ice water, adjusted to pH 11 or higher with 4N sodium hydroxide, and extracted with chloroform. This was washed with water, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The concentrate was purified by silica gel chromatography (hexane / ethyl acetate = 4/1). The purified product was further dissolved in THF and reprecipitated with hexane. After drying under reduced pressure at 60 ° C., 15.4 parts of Compound 1 was obtained. The yield was 35.0%.

[Synthesis of Compound 2]
10 parts of Compound 1 and 5.0 parts of N-ethyl-1-naphthylamine (Tokyo Chemicals) were dissolved in 40 parts of toluene, 6.8 parts of phosphorus oxychloride was added, and the mixture was refluxed for 3 hours. Then, it returned to room temperature, 1N hydrochloric acid was added, and chloroform extracted. This was washed with saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The concentrate was purified by silica gel chromatography (chloroform / methanol = 4/1). After drying under reduced pressure at 60 ° C., 13.8 parts of compound 2 was obtained. The yield was 88.8%.

[Triarylmethane Salt Formation Compound (A1-5)]
12 parts of Compound 2 above, 7.21 parts of sodium dodecyl sulfate (Tokyo Chemicals), 130 parts of dichloromethane and 200 parts of water were mixed and stirred at room temperature for 2 hours. Thereafter, the organic layer was extracted, washed with water, and the organic layer was concentrated under reduced pressure. And it dried with the 60 degreeC vacuum dryer, and obtained 13.7 parts pigment | dye (salt-forming compound (A1-5)). The yield was 79.7%.

(Triarylmethane salt-forming compound (A1-6))
C. I. 20 parts of Basic Blue 7 (Tokyo Chemicals), 30.8 parts of “Aqualon KH-10” (trademark; manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) which is a sulfate having a polymerizable unsaturated group and a polyoxyalkylene group, propylene 120 parts of glycol monomethyl ether acetate (PGMAC) and 100 parts of water were mixed and stirred at room temperature for 2 hours. Thereafter, the organic layer was extracted, washed with water, and the organic layer was concentrated under reduced pressure. And it dried with the 60 degreeC vacuum dryer, and obtained 40.0 parts pigment | dye (salt-forming compound (A1-6)). The yield was 78.7%.

(Triarylmethane salt-forming compound (A1-7))
C. I. 12 parts of Basic Blue 7 (Tokyo Chemicals), 22.0 parts of “Eleminol RS-3000” (trademark; manufactured by Sanyo Chemical Industries, Ltd.), which is a sulfate having a polymerizable unsaturated group and a polyoxyalkylene group, dichloromethane 130 And 200 parts of water were mixed and stirred at room temperature for 2 hours. Thereafter, the organic layer was extracted, washed with water, and the organic layer was concentrated under reduced pressure. And it dried with the 60 degreeC vacuum dryer, and obtained 19.8 parts pigment | dye (salt-forming compound (A1-7)).

(Triarylmethane salt-forming compound (A1-8))
At 25 ° C., resin 1 having 48 parts of sulfate groups in the side chain was added to 2000 parts of water, and the mixture was sufficiently stirred and mixed. On the other hand, 10 parts of C.I. I. An aqueous solution in which Basic Blue 7 is dissolved is prepared and added dropwise to the resin solution. After the dropping, the mixture is stirred at 50 ° C. for 120 minutes to sufficiently react. In order to confirm the end point of the reaction, the reaction solution was dropped onto the filter paper, and it was judged that the salt-forming compound was obtained with the point where the bleeding disappeared as the end point. The mixture was allowed to cool to room temperature with stirring, filtered with suction, washed with water, the salt-forming compound remaining on the filter paper was dried by removing moisture with a dryer, and 29 parts of 31 parts of C.I. I. A salt-forming compound (A1-8) between Basic Blue 7 and Resin 1 having a sulfate group in the side chain was obtained.

(Triarylmethane salt-forming compound (A1-9-15))
Except for using the basic dye and the resin having a sulfate group in the side chain described in Table 6, the salt formation reaction was performed under the same conditions as the salt formation compound (A1-8), and the dye salt formation compound (A1- 9-15) were obtained.

(Triarylmethane salt-forming compound (A1-16))
C. I. 12 parts of Basic Blue 7 (Tokyo Chemicals), 7.4 parts of NaB (C ₆ F ₅ ) ₄ , 130 parts of dichloromethane and 200 parts of water were mixed and stirred at room temperature for 2 hours. Thereafter, the organic layer was extracted, washed with water, and the organic layer was concentrated under reduced pressure. And it dried with the 60 degreeC vacuum dryer, and obtained 14.7 parts of pigment | dyes (salt-forming compound A1-16). The yield was 84.8%.

Abbreviations in Table 6 are shown below.
Aqualon KH-10;
Polyoxyethylene-1- (allyloxymethyl) alkyl ether ammonium sulfate (commercially available from Daiichi Kogyo Seiyaku Co., Ltd., trade name: Aqualon KH-10)

RS-3000;
Sodium polyoxyalkylene sulfate methacrylate (Sanyo Kasei Kogyo Co., Ltd. commercial product, trade name: Eleminol RS-3000)

<Method for Producing Triarylmethane Colorant-Containing Resin Solution>
(Triarylmethane colorant-containing resin solution (DB-1))
The following mixture was stirred and mixed so as to be uniform, and then filtered through a 5.0 μm filter to prepare a triarylmethane colorant-containing resin solution (DB-1).

Salt-forming compound (A1-1): 11.0 parts Acrylic resin solution (R-1): 40.0 parts Propylene glycol monomethyl ether acetate (PGMAC): 49.0 parts

(Triarylmethane colorant-containing resin solution (DB-2 to 17))
Hereinafter, the salt formation compound (A1-1) is a triarylmethane salt formation compound (A1-2 to 16) and C.I. I. A triarylmethane colorant-containing resin solution (DB-2 to 17) was prepared in the same manner as the triarylmethane colorant-containing resin solution (DB-1) except that the basic blue 7 was used. .

<Method for producing xanthene dye>
(Xanthene salt forming compound (A2-1))
In the following procedure, C.I. I. A xanthene-based salt-forming compound (A2-1) composed of Acid Red 52 and Resin 1 having a cationic group in the side chain was produced.
The resin 1 having a cationic group in the side chain of 51 parts was added to 2000 parts of water, and after sufficient stirring and mixing, the mixture was heated to 60 ° C. On the other hand, 10 parts of C.I. in 90 parts of water. I. An aqueous solution in which Acid Red 52 was dissolved was prepared and added dropwise little by little to the previous resin solution. After dropping, the mixture was stirred at 60 ° C. for 120 minutes to sufficiently react. In order to confirm the end point of the reaction, it was judged that a salt-forming compound was obtained with the reaction solution dropped onto the filter paper and the point where the bleeding disappeared as the end point. After cooling to room temperature with stirring, suction filtration was performed, and after washing with water, the salt-forming compound remaining on the filter paper was dried by removing moisture with a dryer, and 32 parts of C.I. I. A salt-forming compound (A2-1) between acid red 52 and resin 1 having a cationic group in the side chain was obtained. At this time, C.I. in the salt-forming compound (A2-1). I. The content of the effective pigment component derived from Acid Red 52 was 25% by weight.

(Xanthene salt forming compound (A2-2))
In the following procedure, C.I. I. A salt-forming compound (A2-2) comprising Acid Red 52 and Resin 2 having a cationic group in the side chain was produced.
The resin 2 having a cationic group in the side chain of 51 parts was added to 2000 parts of water, and after sufficiently stirring and mixing, the mixture was heated to 60 ° C. On the other hand, 10 parts of C.I. in 90 parts of water. I. An aqueous solution in which Acid Red 52 was dissolved was prepared and added dropwise little by little to the previous resin solution. After dropping, the mixture was stirred at 60 ° C. for 120 minutes to sufficiently react. In order to confirm the end point of the reaction, it was judged that a salt-forming compound was obtained with the reaction solution dropped onto the filter paper and the point where the bleeding disappeared as the end point. After cooling to room temperature with stirring, suction filtration was performed, and after washing with water, the salt-forming compound remaining on the filter paper was dried by removing moisture with a dryer, and 32 parts of C.I. I. A salt-forming compound (A2-2) between acid red 52 and resin 2 having a cationic group in the side chain was obtained. At this time, C.I. in the salt-forming compound (A2-2). I. The content of the effective pigment component derived from Acid Red 52 was 25% by weight.

(Xanthene salt forming compound (A2-3))
In the following procedure, C.I. I. A salt-forming compound (A2-3) comprising Acid Red 289 and Resin 1 having a cationic group in the side chain was produced.
88 parts of resin 1 having a cationic group in the side chain was added to 2000 parts of a 10% aqueous methanol solution, and the mixture was sufficiently stirred and mixed, and then heated to 60 ° C. On the other hand, 10 parts of C.I. in 90 parts of water. I. An aqueous solution in which Acid Red 289 was dissolved was prepared and added dropwise to the previous resin solution little by little. After dropping, the mixture was stirred at 60 ° C. for 120 minutes to sufficiently react. In order to confirm the end point of the reaction, it was judged that a salt-forming compound was obtained with the reaction solution dropped onto the filter paper and the point where the bleeding disappeared as the end point. After cooling to room temperature with stirring, suction filtration is performed, and after washing with water, the salt-forming compound remaining on the filter paper is dried by removing moisture with a dryer, and 43 parts of C.I. I. A salt-forming compound (A2-3) between Acid Red 289 and Resin 1 having a cationic group in the side chain was obtained. At this time, C.I. in the salt-forming compound (A2-3). I. The content of the effective pigment component derived from Acid Red 289 was 25% by weight.

(Xanthene salt forming compound (A2-4))
In the following procedure, C.I. I. A salt-forming compound (A2-4) composed of Acid Red 52 and distearyldimethylammonium chloride (Co-Tamine D86P) (the molecular weight of the cation moiety was 550) was produced.
In a 7-15 mol% sodium hydroxide solution, C.I. I. Acid Red 52 is dissolved, mixed and stirred sufficiently, heated to 70 to 90 ° C., and then Cotamine D86P is added dropwise little by little. Cotamine D86P may be dissolved in water and used as an aqueous solution. After adding Cotamine D86P dropwise, the mixture is stirred at 70 to 90 ° C. for 60 minutes to sufficiently react. In order to confirm the end point of the reaction, it can be judged that the salt-forming compound was obtained with the reaction solution dropped on the filter paper and the point where the bleeding disappeared as the end point. After cooling to room temperature with stirring, suction filtration is performed, and after washing with water, the salt-forming compound remaining on the filter paper is dried by removing moisture with a dryer. I. A salt-forming compound (A2-4) of acid red 52 and distearyldimethylammonium chloride was obtained. At this time, C.I. in the salt-forming compound (A2-4). I. The content of the effective pigment component derived from Acid Red 52 was 25% by weight.

(Xanthene salt forming compound (A2-5))
In the following procedure, C.I. I. A salt-forming compound (A2-5) composed of acid red 52 and dialkyl (alkyl is C14 to C18) dimethylammonium chloride (Arcade 2HT-75) (the molecular weight of the cation moiety is 438 to 550) was prepared.
In a 7-15 mol% sodium hydroxide solution, C.I. I. Acid Red 52 is dissolved, mixed and stirred sufficiently, heated to 70 to 90 ° C., and then Arcade 2HT-75 is added dropwise little by little. Arcade 2HT-75 may be dissolved in water and used as an aqueous solution. After adding Arcard 2HT-75 dropwise, the mixture is stirred at 70 to 90 ° C. for 60 minutes and sufficiently reacted. In order to confirm the end point of the reaction, it can be judged that the salt-forming compound was obtained with the reaction solution dropped on the filter paper and the point where the bleeding disappeared as the end point. After cooling to room temperature with stirring, suction filtration is performed, and after washing with water, the salt-forming compound remaining on the filter paper is dried by removing moisture with a dryer. I. A salt-forming compound (A2-5) of acid red 52 and dialkyl (alkyl is C14 to C18) dimethylammonium chloride was obtained. At this time, C.I. in the salt-forming compound (A2-5). I. The content of the effective pigment component derived from Acid Red 52 was 25% by weight.

(Sulphonic acid amide compound of xanthene acid dye)
C. I. Acid Red 52 was converted to a sulfonyl chloride by a conventional method and then reacted with a theoretical equivalent of 2-ethylhexylamine in dioxane to obtain C.I. I. A sulfonic acid amide compound of Acid Red 52 was obtained. (Based on the description of JP-A-6-194828.) At this time, C.I. I. The content of the effective pigment component derived from Acid Red 52 was 25% by weight.

<Method for producing xanthene dye-containing solution>
(Xanthene dye-containing solution (DA-1))
The following mixture was stirred and mixed to be uniform, and then filtered through a 5.0 μm filter to prepare a xanthene dye-containing solution (DA-1).

Xanthene salt forming compound (A2-1): 20.0 parts Solvent: 80.0 parts Propylene glycol monomethyl ether acetate (PGMAC)

(Xanthene dye-containing solution (DA-2 to 6))
Hereinafter, the colorant-containing resin solution (DA-1) described above except that the xanthene-based salt-forming compound (A2-1) is changed to the salt-forming compound (A2-2 to 5) or the sulfonic acid amide compound shown in Table 6. In the same manner as above, xanthene dye-containing solutions (DA-2 to 6) were prepared.

The produced xanthene dye-containing solutions are summarized in Table 8.

<Method for producing other colorant>
(Blue colorant (PB-1))
Phthalocyanine blue pigment C.I. I. Pigment Blue 15: 6 (“LIONOL BLUE ES” manufactured by Toyocolor Co., Ltd.) 200 parts, sodium chloride 1400 parts, and diethylene glycol 360 parts were charged in a stainless steel 1 gallon kneader (Inoue Seisakusho) and kneaded at 80 ° C. for 6 hours. . Next, the kneaded product is poured into 8 liters of warm water, stirred for 2 hours while heating to 80 ° C. to form a slurry, filtered and washed repeatedly to remove sodium chloride and diethylene glycol, and then dried at 85 ° C. overnight. , 190 parts of a blue colorant (PB-1) was obtained.

(Blue colorant (PB-2))
In a reaction vessel, 225 parts of phthalodinitrile and 78 parts of anhydrous aluminum chloride were added to 1250 parts of n-amyl alcohol and stirred. To this, 266 parts of DBU (1,8-Diazabicyclo [5.4.0] undec-7-ene) was added, the temperature was raised, and the mixture was refluxed at 136 ° C. for 5 hours. The reaction solution cooled to 30 ° C. with stirring was poured into a mixed solvent of 5000 parts of methanol and 10000 parts of water with stirring to obtain a blue slurry. This slurry was filtered, washed with a mixed solvent of 2000 parts of methanol and 4000 parts of water, and dried to obtain 135 parts of chloroaluminum phthalocyanine. Further, 100 parts of chloroaluminum phthalocyanine was slowly added to 1200 parts of concentrated sulfuric acid at room temperature in a reaction vessel. The mixture was stirred at 40 ° C. for 3 hours, and the sulfuric acid solution was poured into 24000 parts of cold water at 3 ° C. The blue precipitate was filtered, washed with water, and dried to obtain a blue colorant (PB-2) represented by the following formula (a). The average primary particle size was 29.4 nm.

(Blue colorant (PB-3))
In a reaction container, 100 parts of methanol and 100 parts of an aluminum phthalocyanine pigment represented by the formula (a) and 49.5 parts of diphenyl phosphate were added, heated to 40 ° C., and reacted for 8 hours. After cooling this to room temperature, the product was filtered, washed with methanol, and dried to obtain 114 parts of an aluminum phthalocyanine pigment represented by the following formula (b).

  A blue colorant (PB-3) was obtained from the obtained aluminum phthalocyanine pigment represented by the formula (b) by the same salt milling method as that for the blue colorant (PB-1). The average primary particle size was 31.2 nm.

(Blue colorant (PB-4))
In a reaction vessel, 100 parts of methanol and 100 parts of an aluminum phthalocyanine pigment represented by the formula (a) and 43.2 parts of diphenylphosphinic acid were added to 1000 parts of methanol, heated to 40 ° C., and reacted for 8 hours. After cooling this to room temperature, the product was filtered, washed with methanol and dried to obtain 112 parts of an aluminum phthalocyanine pigment represented by the following formula (c).
A blue colorant (PB-4) was obtained from the obtained aluminum phthalocyanine pigment represented by the formula (c) by the same salt milling method as that for the blue colorant (PB-1). The average primary particle size was 29.5 nm.

(Purple colorant (PV-1))
Dioxazine-based purple pigment C.I. I. 200 parts of Pigment Violet 23 (“LIONOGEN VIOLET RL” manufactured by Toyocolor Co., Ltd.), 1400 parts of sodium chloride, and 360 parts of diethylene glycol were charged into a 1 gallon kneader (manufactured by Inoue Seisakusho) and kneaded at 80 ° C. for 6 hours. Next, the kneaded product is poured into 8 liters of warm water, stirred for 2 hours while heating to 80 ° C. to form a slurry, filtered and washed repeatedly to remove sodium chloride and diethylene glycol, and then dried at 85 ° C. overnight. 190 parts of a purple colorant (PV-1) were obtained.

(Red colorant (PR-1))
Red pigment C.I. I. Pigment Red 177 ("CROMOPHTAL RED A2B" manufactured by BASF) 152 parts, 8 parts of the pigment derivative A-2 shown in Table 5, 1600 parts of sodium chloride, and 190 parts of diethylene glycol (manufactured by Tokyo Chemical Industry) 1 gallon kneader made of stainless steel (Made by Inoue Seisakusho) and kneaded at 60 ° C. for 10 hours. Next, this mixture is poured into about 5 liters of warm water, heated to about 70 ° C. and stirred with a high speed mixer for about 1 hour to form a slurry, then filtered and washed to remove sodium chloride and diethylene glycol, After drying at 80 ° C. for 24 hours, 156 parts of a red colorant (PR-1) was obtained.

(Red colorant (PR-2))
Red pigment C.I. I. Pigment Red 179 Pigment (BASF Japan Co., Ltd. “Paliogen Maroon L-3920”) 500 parts, sodium chloride 500 parts, and diethylene glycol 250 parts were charged in a stainless steel 1 gallon kneader (Inoue Seisakusho) at 120 ° C. for 8 hours. Kneaded. Next, the kneaded product is poured into 5 liters of warm water, stirred for 1 hour while heating to 70 ° C. to form a slurry, repeatedly filtered and washed with water to remove sodium chloride and diethylene glycol, and then dried at 80 ° C. overnight. 490 parts of a red colorant (PR-2) was obtained.

(Red colorant (PR-3))
Commercially available C.I. I. 100 parts of Pigment Red 254 (PR254) (“Irgafore Red B-CF” manufactured by BASF), 1200 parts of sodium chloride, and 120 parts of diethylene glycol were charged into a 1 gallon kneader (manufactured by Inoue Seisakusho) at 6 ° C. The mixture was kneaded for a time and subjected to salt milling. The obtained kneaded product is poured into 3 liters of warm water, stirred for 1 hour while being heated to 70 ° C., made into a slurry, repeatedly filtered and washed with water to remove sodium chloride and diethylene glycol, and then dried at 80 ° C. overnight. 98 parts of red colorant (PR-3) were obtained. The average primary particle size was 33 nm.

(Red colorant (PR-4))
Commercially available C.I. I. Pigment Red 269 (average primary particle size is 35 nm) was used.

(Green colorant (PG-1))
Phthalocyanine green pigment C.I. I. 500 parts of Pigment Green 7 (“Lionol Green YS-07” manufactured by Toyocolor Co., Ltd.), 500 parts of sodium chloride, and 250 parts of diethylene glycol were charged into a stainless steel 1 gallon kneader (Inoue Seisakusho) and kneaded at 120 ° C. for 4 hours. did. Next, the kneaded product is poured into 5 liters of warm water, stirred for 1 hour while heating to 70 ° C. to form a slurry, filtered and washed repeatedly to remove sodium chloride and diethylene glycol, and then dried at 80 ° C. overnight. And 490 parts of a green colorant (PG-1) was obtained.

(Yellow colorant (PY-1))
Phthalocyanine green pigment C.I. I. Pigment Green 7 is an isoindoline yellow pigment C.I. I. 490 parts of yellow colorant (PY) in the same manner as in the preparation of green fine pigment 1, except that it was changed to CI Pigment Yellow 185 ("Paliogen Yellow D1155" manufactured by BASF) and the kneading time was changed from 4 hours to 8 hours. -1) was obtained.

<Method for producing pigment dispersion>
(Pigment dispersion (DPB-1))
The following mixture was stirred and mixed so as to be uniform, and then dispersed with an Eiger mill (“Mini Model M-250 MKII” manufactured by Eiger Japan) using zirconia beads having a diameter of 0.5 mm, and then 5.0 μm. A colorant dispersion (DR-1) was produced by filtration using a filter.

Blue colorant (PB-1): 12.0 parts Resin type dispersant: 1.0 part ("EFKA4300" manufactured by Ciba Japan)
Acrylic resin solution (R-1): 35.0 parts Solvent: 52.0 parts (propylene glycol monomethyl ether acetate (PGMAC))

(Pigment dispersion (DPB-2 to 4, DPV-1, DPR-1 to 4, DPG-1, DPY-1))
The colored compositions (DPB-2 to 4, DPV-1, and DPR-1 to 4) were the same as the colorant dispersion (DPB-1) except that the mixture was changed to the mixture (parts by weight) shown in Table 9. , DPG-1, DPY-1).

<Method for producing photosensitive red coloring composition and photosensitive green coloring composition>
(Photosensitive red coloring composition (RR-1))
A mixture having the following composition was stirred and mixed so as to be uniform, and then filtered through a 1.0 μm filter to prepare a photosensitive green coloring composition (RR-1).

Colorant dispersion (DPR-1): 34.0 parts (CI Pigment Red 177 (PR177))
Colorant dispersion (DPR-2): 32.7 parts (CI Pigment Red 179 (PR179))
Acrylic resin solution (R-2): 4.3 parts Photopolymerizable monomer: 4.2 parts (“Aronix M402” manufactured by Toagosei Co., Ltd.)
Photopolymerization initiator: 1.2 parts ("Irgacure 907" manufactured by BASF)
Sensitizer: 0.4 parts ("EAB-F" manufactured by Hodogaya Chemical Co., Ltd.)
Solvent: 23.2 parts (propylene glycol monomethyl ether acetate (PGMAC))

(Photosensitive red coloring composition (RR-2), photosensitive green coloring composition (RG-1-4))
Hereinafter, the pigment dispersion, the acrylic resin solution, the photopolymerizable monomer, the photopolymerization initiator, the sensitizer, and the photosensitive green coloring except that the solvent is changed to the types and blending amounts (parts by weight) shown in Table 9. In the same manner as in the composition (RR-1), a photosensitive red colored composition (RR-2) and a photosensitive green colored composition (RG-1 to RG-4) were produced.

  In Table 10, “Aronix M402” manufactured by Toagosei Co., Ltd. is used as a photopolymerizable monomer, “Irgacure 907” manufactured by BASF is used as a photopolymerization initiator, and Hodogaya Chemical Co., Ltd. is used as a sensitizer. “EAB-F” manufactured by the company was used.

<Preparation of blue coloring composition for organic EL display device>
[Example 1]
(Photosensitive blue coloring composition (RB-1))
The following mixture was stirred and mixed so as to be uniform, and then filtered through a 1.0 μm filter to prepare a photosensitive blue coloring composition (RB-1).
Triarylmethane colorant-containing resin solution (DB-1): 45.5 parts (salt-forming compound (A1-1))
Acrylic resin solution (R-2): 30.8 parts Photopolymerizable monomer: 3.6 parts (“Aronix M402” manufactured by Toagosei Co., Ltd.)
Photopolymerization initiator: 1.2 parts ("Irgacure 907" manufactured by BASF)
Sensitizer: 0.4 parts ("EAB-F" manufactured by Hodogaya Chemical Co., Ltd.)
Solvent: 18.5 parts (propylene glycol monomethyl ether acetate (PGMAC))

[Examples 2-36, Comparative Examples 1-4]
(Photosensitive blue coloring composition (RB-2 to 40)
Hereinafter, except that the colorant-containing resin solution, the acrylic resin solution, the photopolymerizable monomer, the photopolymerization initiator, the sensitizer, and the solvent are changed to the types shown in Tables 11 and 12 and the blending amount (parts by weight). The photosensitive blue coloring composition (RB-2-40) was produced like the photosensitive blue coloring composition (RB-1).
In Tables 11 and 12, “Aronix M402” manufactured by Toagosei Co., Ltd. is used as a photopolymerizable monomer, “Irgacure 907” manufactured by BASF is used as a photopolymerization initiator, and Hodogaya is used as a sensitizer. “EAB-F” manufactured by Kagakusha was used.

[Evaluation of photosensitive blue coloring composition]
The color characteristics and film thickness of the photosensitive blue colored compositions obtained in Examples and Comparative Examples were evaluated by the following methods. Table 13 shows the evaluation results.

<Formation of filter segment>
In the organic EL element 1 (EL-1) as a light source, a black matrix is patterned on a glass substrate, and a colored composition shown in Table 13 is used on the substrate with a spin coater. Each of the film thicknesses was applied to form a colored composition film. The film was irradiated with ultraviolet rays of 150 mJ / cm ² using a super high pressure mercury lamp through a photomask. Next, sprayed with an alkali developer consisting of 0.15% by weight of sodium carbonate, 0.05% by weight of sodium hydrogen carbonate, 0.05% by weight of an anionic surfactant ("Perex NBL" manufactured by Kao Corporation) and 99.7% by weight of water. After developing and removing the unexposed portion, the substrate was washed with ion exchange water, and this substrate was heated at 230 ° C. for 20 minutes to form the blue filter segment shown in Table 13.

<Evaluation of color characteristics and film thickness>
When the obtained blue filter segment is irradiated with light using the organic EL element 1 (EL-1) as a light source, the color characteristics (x, y, Y) of the blue filter segment are measured with a microspectrophotometer (Olympus Optical Co., Ltd.). It was measured using “OSP-SP100”).
The film thickness was measured using a surface shape measuring device DEKTAK150 (manufactured by ULVAC-ES).

  The photosensitive coloring composition of the present invention contains a salt-forming compound of a triarylmethane basic dye and a counter compound (A) having an anionic group as a colorant, and the anion portion of the counter compound (A) is By being a sulfuric acid group represented by the following general formula (1), it was possible to form the filter segment within a practical range of 3.5 μm or less while exhibiting a high Y.

<Preparation of color filter for organic EL display device>
[Example 37]
(Color filter (CF-1))
The blue filter segment formed by the same method as the blue filter segment of Example 1 using the photosensitive blue coloring composition (RB-1), the organic EL element (EL-1) as the light source, and the red filter segment is The photosensitive blue coloring composition (RR-1) is used so that the chromaticity of x = 0.670 and y = 0.325 is met, and the green filter segment is the photosensitive green coloring composition (RG-1). Was used to prepare a coating film so as to match the chromaticity of x = 0.200 and y = 0.700, and a color filter (CF-1) was obtained.

[Examples 38 to 46, Comparative Example 5]
(Color filter (CF-2 to 11))
Example 37 (color filter (CF-1)) except that the photosensitive coloring composition described in Table 14 was used instead of the photosensitive coloring composition (RB-1, RR-1, RG-1). In the same manner, (color filters (CF-2 to 11) were obtained.

<Evaluation of color filter>
A color spectrophotometer ("OSP-SP100" manufactured by Olympus Optical Co., Ltd.) was used to determine the color characteristics of the color filters when the organic EL element 1 (EL-1) was irradiated with light on the color filters prepared in Examples and Comparative Examples. It measured using. Chromaticity point (x, y) in the CIE color system of each color filter segment, NTSC ratio (standard three primary colors defined by the US National Television System Committee (NTSC), red (
0.67, 0.33), green (0.21, 0.71), ratio to area surrounded by blue (0.14, 0.08)), brightness of white display (Y value) in Table 14 Show.

  The photosensitive coloring composition of the present invention contains a salt-forming compound of a triarylmethane basic dye and a counter compound (A) having an anionic group as a colorant, and the anion portion of the counter compound (A) is By being a sulfate group represented by the general formula (1), the color filter ((CF-1 to 10) including the blue filter segment formed by the photosensitive coloring composition maintains high white display brightness. However, it was confirmed that a wide color reproducibility of 99% or more of NTSC was exhibited.

That is, the organic EL display device using a white light-emitting organic EL element as a light source by the color filter using the colored composition of the present invention can satisfy two characteristics of high brightness and high purity, and an organic EL such as a high NTSC ratio. It was confirmed that a color display device capable of achieving the quality required as a color filter for a display device can be provided.

Claims (14)

Organic EL display device containing colorant, binder resin, photopolymerizable monomer, and photopolymerization initiator including salt-forming compound of triarylmethane based basic dye and counter compound (A) having anionic group A blue coloring composition for
The counter compound (A) is a sulfate ester having a sulfate group represented by the general formula (1) or a metal salt thereof (a1), or a resin (a2 having a sulfate group represented by the general formula (1) in the side chain ) And
A sulfate ester having a sulfate group represented by the general formula (1) or a metal salt thereof (a1) is a compound represented by the general formula (11), or an ethylenically unsaturated monomer represented by the general formula (21) It is a body (a1-1), The blue coloring composition for organic electroluminescent display apparatuses characterized by the above-mentioned.

[In the general formula (11), R represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted alkyl group.
Represents a substituted alkenyl group, and each M ⁺ independently represents a hydrogen ion or a metal ion.
The n represents an integer of 1 to 4. ]
[In General Formula (21), R ¹ represents a hydrogen atom or a methyl group.
R ² represents a single bond or a divalent linking group,
A represents the general formula (22), and Y ₂ ⁺ represents an inorganic or organic cation. ]
[In General Formula (22), R ⁴ represents an alkylene group which may have a substituent, and n = 1 to 20
It is an integer. ] At least the wavelength 430nm~485nm scope and range and the emission intensity maximum to become the peak wavelength of the wavelength 560nm~620nm (λ _1), having a (lambda _2), the luminous intensity _{I 1} and the wavelength lambda ₂ at a wavelength lambda ₁ The chromaticity of the colored film in the XYZ color system measured using a white organic EL light source having an emission spectrum in which the ratio of the emission intensity I ₂ (I ₂ / I ₁ ) is 0.4 or more and 0.9 or less. 2. The blue coloring composition for an organic EL display device according to claim 1, wherein when the coordinates satisfy x ≦ 0.160 and y ≦ 0.100, the thickness of the colored film is less than 3.5 μm. object. Resin (a2) having a sulfate group represented by the general formula (1) in the side chain is an ethylenically unsaturated monomer (a1-1) represented by the general formula (21) and other ethylenically unsaturated monomers. The blue coloring composition for an organic EL display device according to claim 1, which is a copolymer with a saturated monomer. The blue coloring composition for organic EL display devices according to any one of claims 1 to 3, wherein the binder resin contains an active energy ray-curable resin having an ethylenically unsaturated double bond. Furthermore, a sensitizer is included, The blue coloring composition for organic EL display devices of any one of Claims 1-4 characterized by the above-mentioned. The blue coloring composition for organic EL display devices according to any one of claims 1 to 5, wherein the colorant further contains a xanthene dye. The organic EL display device according to claim 6, wherein the xanthene pigment includes at least one selected from the group consisting of a salt-forming compound of a xanthene acid dye and a sulfonic acid amide compound of a xanthene acid dye. Blue coloring composition. Xanthene acid dyes are C.I. I. Acid Red 52, C.I. I. Acid Red 87
, C.I. I. Acid Red 92, C.I. I. Acid Red 289, and C.I. I. The blue coloring composition for organic EL display devices according to claim 7, wherein the composition is at least one selected from the group consisting of Acid Red 388. The blue coloring composition for organic EL display devices according to any one of claims 1 to 8, wherein the colorant further contains a blue pigment. The blue coloring composition for organic EL display devices according to any one of claims 1 to 9, wherein the colorant further contains a purple pigment. The color filter for an organic EL display device comprising at least one red filter segment, at least one green filter segment, and at least one blue filter segment, wherein at least one blue filter segment is any one of claims 1 to 10.
A color filter for an organic EL display device, which is formed from the blue coloring composition for an organic EL display device according to the item. At least the wavelength 430nm~485nm scope and range peak wavelength emission intensity is maximum in the wavelength _{560nm~620nm (λ 1), (λ} 2) has a light emission in the emission intensity _{I 1} and the wavelength lambda ₂ at a wavelength lambda ₁ When a white organic EL light source having a spectral characteristic with an intensity I ₂ ratio (I ₂ / I ₁ ) of 0.4 or more and 0.9 or less is used, the chromaticity coordinates of the colored film in the XYZ color system are When (xR, yR), (xG, yG), and (xB, yB) are used, the area of the triangle surrounded by these three points is red (0.67, 0.33) and green (0.21). , 0.71)
The color filter for an organic EL display device according to claim 11, wherein the color filter is 75% or more with respect to an area surrounded by blue (0.14, 0.08). An organic EL display device comprising the color filter for an organic EL display device according to claim 11 and a white organic EL light source. White organic EL light source has a wavelength range of 430 nm to 485 nm and a wavelength of 560 nm
Range and the peak wavelength emission intensity is maximum of _{~620nm (λ 1), (λ} 2) has a ratio of the emission intensity _{I 2} in the light-emitting intensity _{I 1} and the wavelength lambda ₂ at a wavelength lambda _{1 (I} 2 / I ₁ ) is 0
. 14. The organic EL display device according to claim 13, having an emission spectrum of 4 or more and 0.9 or less.