KR20060073479A - Colored composition for color filter and color filter - Google Patents

Abstract

A coloring composition containing a photosensitive transparent resin, a non-photosensitive transparent resin, a polyfunctional monomer having three or more ethylenically unsaturated double bonds, and a coloring material, wherein the weight molar concentration of the ethylenically unsaturated double bond in the coloring composition is photosensitive transparent. made of a resin, a non-photosensitive transparent resin, and is based on the total weight of the polyfunctional monomer to the composition for coloring the color filters ^{1.0 × 10 -3 mol / g~7.0 ×} 10 -3 mol / g, and a color composition for a color filter And a filter segment to be used.

Photosensitive, transparent resin, ethylene, unsaturated double bond, polyfunctional monomer, coloring, color filter.

Description

Color composition and color filter for color filter {COLORED COMPOSITION FOR COLOR FILTER AND COLOR FILTER}

The present invention relates to a highly sensitive photosensitive coloring composition, and more particularly, to a highly sensitive color filter coloring composition used for the production of color filters used in color liquid crystal display devices, color image sensor devices, and the like, and color filters formed using the same. will be.

The color filter is formed by arranging two or more kinds of fine stripe (stripe) shaped filter segments in parallel or alternately on the surface of a transparent substrate such as glass, or by arranging the fine filter segments in a vertical and horizontal constant arrangement. consist of. The filter segments are fine from several microns to several hundred microns, and are arranged in a predetermined arrangement for each color.

In general, in a color liquid crystal display device, a transparent electrode for driving a liquid crystal is formed by vapor deposition or sputtering on a color filter, and an alignment film for orientating the liquid crystal in a predetermined direction is formed thereon. In order to fully acquire the performance of these transparent electrodes and an oriented film, it is necessary to form at generally high temperature 200 degreeC or more, Preferably 230 degreeC or more.

For this reason, as a manufacturing method of the color filter coloring composition currently used for manufacture of a color filter, the method called the pigment dispersion method which uses the pigment excellent in light resistance and heat resistance as a coloring material is mainstream.

In the case of the pigment dispersion method, a photosensitive colored composition (pigment resist material) in which a pigment is dispersed in a photosensitive resin composition is applied to a transparent substrate such as glass, and after removal of the solvent by drying, pattern exposure of one filter color is performed. Subsequently, the unexposed part is removed in a developing step to form a pattern of the first color, and if necessary, a treatment such as heating is performed, and then the same operation is repeated for all the filter colors, thereby producing a color filter.

In formation of the filter segment using the photosensitive coloring composition containing a pigment, high photosensitivity, solubility in the developing solution of a non-image part, and chemical resistance of an image part are important characteristics. In recent years, the demand for a color filter having a higher color density and a black matrix having a higher optical density (OD value) is increasing, and the coloring material concentration in the photosensitive coloring composition tends to increase. However, when the coloring material concentration rises, it affects other characteristics, such as not being able to obtain sufficient hardening of an exposure part by the increase of the light absorption of the coloring material itself. Thus, the increase of the coloring material concentration and the maintenance of the characteristic derived from the photosensitive resin composition including photosensitive property have a relationship of a trade off.

In order to improve the photosensitivity and the solubility to a developing solution, the photosensitive coloring composition for color filters using the photosensitive transparent resin which has an ethylenically unsaturated double bond and a carboxyl group in a side chain is known (for example, refer Unexamined-Japanese-Patent No. 2002-014468). . In order to use this as a photosensitive resin composition, the design which satisfies many characteristics, such as stability, solubility, and chemical resistance, is adjusted by adjusting the kind and ratio of the monomer which comprises a photosensitive transparent resin.

In the photosensitive coloring composition, while maintaining the dispersion stability of the coloring material, achieving high sensitivity and good patterning properties (solubility of the unexposed portion, shape maintenance of the photocured portion, etc.) due to the high concentration, Changes in the design of photosensitive transparent resins are at their limits.

Accordingly, an object of the present invention is to provide a color filter composition for color filters that is compatible with the maintenance of physical properties such as high sensitivity and excellent dispersion stability, patterning property and chemical resistance, and a color filter using the same.

The coloring composition for color filters of this invention is a coloring composition containing the photosensitive transparent resin, the non-photosensitive transparent resin, the polyfunctional monomer which has three or more ethylenically unsaturated double bonds, and a coloring material, and ethylenically unsaturated in this coloring composition. the weight of the molar concentration of the double bond, the photosensitive transparent resin, the transparent resin and the non-photosensitive, based on the total weight of the polyfunctional monomer and is characterized in that ^{1.0 × 10 -3 mol / g~7.0 ×} 10 -3 mol / g.

Moreover, the color filter of this invention is provided with the filter segment formed using the said color composition for color filters.

(The best mode for carrying out the invention)

First, the coloring composition for color filters of this invention is demonstrated.

The color composition for color filters of the present invention contains a photosensitive transparent resin, a non-photosensitive transparent resin, a polyfunctional monomer having three or more ethylenically unsaturated double bonds, and a coloring material.

In addition, the weight molar concentration of the ethylenically unsaturated double bond in the colored composition of the present invention is the total of the photosensitive transparent resin, the non-photosensitive transparent resin and the polyfunctional monomer (hereinafter, the composition consisting of the photosensitive transparent resin, the non-photosensitive transparent resin and the polyfunctional monomer). is referred to as the photosensitive resin composition.) is based on the ^{weight, 1.0 × 10 -3 mol / g~7.0} × 10 -3 mol / g.

The ethylenically unsaturated double bond weight molar concentration in the coloring composition is calculated by the following formula:

(Ethylenic unsaturated double bond weight molar concentration) = (weight of photosensitive transparent resin / double bond equivalent of photosensitive transparent resin + weight of polyfunctional monomer / double bond equivalent of polyfunctional monomer) / (weight + non-photosensitive of photosensitive transparent resin Weight of transparent resin + weight of polyfunctional monomer)

In addition, a double bond equivalent is defined in the following formula, and becomes a measure of the amount of double bond contained in a molecule | numerator, and if it is a compound of the same molecular weight, the smaller the numerical value of a double bond equivalent, the more the double bond introduction amount will be.

[Double bond equivalent] = [molecular weight of repeating structural unit] / [number of double bonds in repeating structural unit]

When the ethylenically unsaturated double bond weight molar concentration in the colored composition is lower than 1.0 × 10 ⁻³ mol / g, the photosensitivity is lowered and sufficient curability cannot be obtained when a colored coating film is formed. In addition, when the ethylenically unsaturated double bond weight molar concentration in the colored composition is higher than 7.0 × 10 ⁻³ mol / g, the sensitivity is high, but the dispersion stability is lowered so that a uniform colored coating film cannot be obtained, or developability is decreased. And patterning property may fall.

When the coloring material used in the coloring composition of the present invention is any one of red, magenta, and yellow, ethylenic unsaturation in the red, magenta, or yellow coloring composition is considered in view of sensitivity, dispersion stability, developability, and patterning properties. double bond by weight of the molar concentration is preferably from ^{1.0 × 10 -3 mol / g~4.0 ×} 10 -3 mol / g, more preferably from ^{2.0 × 10 -3 mol / g~4.0 ×} 10 -3 mol / g, more preferably from ^{3.0 × 10 -3 mol / g~4.0 ×} 10 -3 mol / g.

When the coloring material used for the coloring composition of the present invention is green, in terms of sensitivity, dispersion stability, developability and patterning, the ethylenically unsaturated double bond weight molar concentration in the green coloring composition is preferably 2.5 × 10 ^−3. mol / g~5.0 × 10 ^-3 to mol / g, more preferably from ^{3.0 × 10 -3 mol / g~5.0 ×} 10 -3 mol / g.

Moreover, when the coloring material used for the coloring composition of this invention is blue, the ethylenically unsaturated double bond weight molar concentration in this blue coloring composition becomes like this from the viewpoint of a sensitivity, dispersion stability, developability, and patterning, Preferably it is 3.0 *. is ^{10 -3 mol / g~7.0 × 10 -3} mol / g, more preferably from ^{4.0 × 10 -3 mol / g~7.0 ×} 10 -3 mol / g.

The photosensitive transparent resin and the non-photosensitive transparent resin preferably used in the present invention preferably have a transmittance of 80% or more and more preferably 95% or more in the entire wavelength region of 400 to 700 nm which is the visible light region.

The photosensitive transparent resin is a resin having an ethylenically unsaturated double bond, and has a reactive substituent such as an isocyanate group, an aldehyde group, an epoxy group, a carboxyl group, or the like in a polymer having a reactive substituent such as a hydroxyl group, a carboxyl group or an amino group. The resin which reacted an acryl compound and cinnamic acid, and introduce | transduced the functional group which has ethylenically unsaturated double bonds, such as a (meth) acryloyl group and a styryl group, into the said polymer is mentioned. Specifically, the copolymer obtained by copolymerizing the ethylenically unsaturated monomer having a hydroxyl group and other ethylenically unsaturated monomers may be obtained by reacting a compound having a functional group capable of reacting with a hydroxyl group and an ethylenically unsaturated double bond. Examples of the functional group capable of reacting with a hydroxyl group include an isocyanate group, a carboxyl group, and the like, but in particular, an isocyanate group is preferable in view of reactivity, and specifically, 2-acryloylethyl isocyanate as a compound having an isocyanate group and an ethylenically unsaturated double bond. And 2-methacryloylethyl isocyanate etc. are mentioned. In addition, a half ester of a polymer containing an acid anhydride such as a styrene-maleic anhydride copolymer or an α-olefin-maleic anhydride copolymer by a (meth) acryl compound having a hydroxyl group such as hydroxyalkyl (meth) acrylate It can also be used.

The amount of ethylenically unsaturated double bonds introduced through the hydroxyl group or the like in the photosensitive transparent resin is represented by the "double bond equivalent" of the obtained photosensitive transparent resin.

It is preferable that it is 200-1200, and, as for the double bond equivalent of the photosensitive transparent resin in this invention, it is more preferable that it is 300-900. When the double bond equivalent of the photosensitive transparent resin is less than 200, the ratio of the ethylenically unsaturated monomer having a reactive substituent which introduces an ethylenically unsaturated double bond is increased, and an amount of other ethylenically unsaturated monomer is sufficient to maintain its characteristics. It cannot be copolymerized. When it exceeds 1200, sufficient sensitivity cannot be obtained because the number of ethylenically unsaturated double bonds is small.

In addition, the weight average molecular weight (Mw) of the photosensitive transparent resin is preferably 2000 to 200000, more preferably 5000 to 50000, from the viewpoint of good dispersibility of the coloring material.

Non-photosensitive transparent resin is resin which does not have an ethylenically unsaturated double bond, and there exist a thermoplastic resin and a thermosetting resin. Examples of the thermoplastic resin include butyral resin, styrene-maleic acid copolymer, chlorinated polyethylene, chlorinated polypropylene, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, polyvinyl acetate, polyurethane resin, polyester resin, and acrylic resin. , Alkyd resin, styrene resin, polyamide resin, rubber resin, cyclized rubber resin, cellulose, polybutadiene, polyimide resin and the like. Examples of the thermosetting resin include epoxy resins, benzoguanamine resins, rosin-modified maleic acid resins, rosin-modified fumaric acid resins, phenol resins, melamine resins, urea resins, and the like.

When forming a filter segment by alkali image development using the coloring composition of this invention, it is preferable to use an alkali-soluble type thing as a non-photosensitive transparent resin. Alkali-soluble non-photosensitive transparent resin is a transparent resin which dissolves in alkaline aqueous solution and does not have an ethylenically unsaturated double bond. For example, the weight average molecular weight 1000- which has acidic functional groups, such as a carboxyl group and a sulfone group, is used. 500000, Preferably 5000-100000 non-photosensitive transparent resin is mentioned. In an acidic functional group, a carboxyl group is preferable. In order to stabilize dispersion and improve the developing performance of the color filter coloring composition, it is preferable that the acid value of the non-photosensitive transparent resin is higher than that of the photosensitive transparent resin. Patterning property becomes favorable and the filter segment of a stable shape can be obtained. Specific examples of alkali-soluble non-photosensitive transparent resins include acrylic resins having acidic functional groups, α-olefins / (maleic anhydride) copolymers, styrene / maleic anhydride copolymers, styrene / styrene sulfonic acid copolymers, and ethylene / ( Meta) acrylic acid copolymer, isobutylene / (anhydride) maleic acid copolymer, and the like. Among them, at least one resin selected from an acrylic resin having an acidic functional group, an α-olefin / (anhydrous) maleic acid copolymer, a styrene / (anhydride) maleic acid copolymer and a styrene / styrene sulfonic acid copolymer, particularly an acidic functional group Since acrylic resin has high heat resistance and transparency, it can be used suitably.

In addition, when using a pigment as a coloring material, it is the surface of the dispersion stability improvement of a pigment that the photosensitive transparent resin or non-photosensitive transparent resin contains the ethylenically unsaturated monomer (a) represented by following formula (1) as a polymerization component. Preferred at

In formula (1), R <_1> represents a hydrogen atom or a methyl group, R <_2> represents a C2-C10 alkylene group, R <_3> may contain a hydrogen atom or a benzene ring, and may have a C1-C20 The alkyl group of is shown. n represents the integer of 1-15.

In said Formula (1), it is preferable that carbon number of the alkylene group of R <_2> is 2-3. Moreover, although carbon number of the alkyl group of R <_3> is 1-20, More preferably, it is 1-10, and the alkyl group of R <_3> may also contain a benzene ring. When the alkyl group of R ₃ has 1 to 10 carbon atoms, the alkyl group is impeded to inhibit the access between the resins and promotes adsorption / alignment to the pigment. However, when the carbon number is more than 10, the steric hindrance effect of the alkyl group is increased, and benzene The adsorption / orientation of the ring to the pigments also tends to interfere. This tendency becomes remarkable as the carbon chain length of the alkyl group of R ₃ becomes longer, and when carbon number exceeds 20, the adsorption / orientation of a benzene ring falls extremely. As an alkyl group containing the benzene ring represented by R <_3> , a benzyl group, 2-phenyl (iso) propyl group, etc. are mentioned.

Examples of the ethylenically unsaturated monomer (a) include ethylene oxide (EO) -modified (meth) acrylates of phenol, EO or propylene oxide (PO) -modified (meth) acrylates of paracumylphenol, and EO-modified (meth) acrylates of nonyl phenol. PO modified (meth) acrylate of a latex, nonyl phenol, etc. are mentioned. Among these compounds, EO or PO-modified (meth) acrylates of paracumylphenol not only have an effect of? Electrons of the benzene ring, but also have a three-dimensional effect, thereby forming a better adsorption / alignment surface with respect to coloring materials such as pigments. As a result, the dispersing effect is higher.

Other ethylenically unsaturated monomer compounds (b) copolymerizable with the ethylenically unsaturated monomer (a) include (meth) acrylic acid, methyl (meth) acrylate, ethyl (meth) acrylate, (iso) propyl (meth) acrylate, (Iso) butyl (meth) acrylate, (iso) pentyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, benzyl (meth) acrylate, cyclo Hexyl (meth) acrylate, glycidyl (meth) acrylate, isobornyl (meth) acrylate, acid phosphooxyethyl (meth) acrylate, acid phosphooxypropyl (meth) acrylate, 3- Chloro-2-acid phosphooxyethyl (meth) acrylate, acid phosphooxy polyethyleneglycol mono (meth) acrylate, etc. are mentioned, These can be used 1 type (s) or 2 or more types.

The copolymerization ratio of the monomer (a) in the photosensitive transparent resin or non-photosensitive transparent resin formed by copolymerizing the ethylenically unsaturated monomer (a) represented by the general formula (1) and the compound (b) having another ethylenically unsaturated monomer double bond is It is preferable to occupy 0.1-50 weight% with respect to the total amount of the monomer which combined (a) and (b), More preferably, it is 10-35 weight%. When the copolymerization ratio of the monomer (a) is less than 0.1% by weight, the dispersing effect of the pigment is lowered. Moreover, when more than 50 weight%, hydrophobicity becomes large, the developability of a coloring composition may fall, or it may become a cause of a residue.

The photosensitive transparent resin and the non-photosensitive transparent resin can be used in an amount of preferably 20 to 400 parts by weight, more preferably 50 to 250 parts by weight in total with respect to 100 parts by weight of the coloring material.

In the colored composition of the present invention, in order to increase the sensitivity, the photosensitive transparent resin and the non-photosensitive transparent resin are used together, but in order to sufficiently increase the sensitivity, the content of the photosensitive transparent resin is based on the total weight of the photosensitive transparent resin and the non-photosensitive transparent resin. As a result, it is preferable to occupy 15 to 80% by weight. In the red, magenta or yellow colored composition, the content of the photosensitive transparent resin is more preferably 15 to 65% by weight based on the total weight of the photosensitive transparent resin and the non-photosensitive transparent resin. In the green colored composition, the content of the photosensitive transparent resin is more preferably 20 to 50% by weight based on the total weight of the photosensitive transparent resin and the non-photosensitive transparent resin. In the blue colored composition, the content of the photosensitive transparent resin is more preferably 45 to 80% by weight based on the total weight of the photosensitive transparent resin and the non-photosensitive transparent resin.

When content of the photosensitive transparent resin is less than 15 weight%, the photosensitive property of a coloring composition may fall and sufficient sclerosis | hardenability may not be obtained when forming a colored coating film, and even if it supplements curability with a polyfunctional monomer, In some cases, solvent resistance is not sufficient. In addition, when the content of the photosensitive transparent resin is more than 80% by weight, the sensitivity of the colored composition is increased, but the dispersion stability is lowered so that a uniform color-coated film cannot be obtained, or the developability is lowered, and the patterning property is deteriorated. There is a case.

Examples of the polyfunctional monomer having three or more ethylenically unsaturated double bonds include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and ethylene oxide modified trimethyl. Representative examples thereof include various acrylic esters such as roll propane tri (meth) acrylate and propylene oxide modified trimethylolpropane tri (meth) acrylate, and methacrylic esters. It is preferable that a polyfunctional monomer has 3-12 ethylenically unsaturated double bond from a viewpoint of the sensitivity up of a coloring composition. The polyfunctional monomer which has three or more ethylenically unsaturated double bond can be used individually or in mixture of 2 or more types.

The polyfunctional monomer having three or more ethylenically unsaturated double bonds is preferably 10 to 300 parts by weight, more preferably 10 to 200 parts by weight with respect to 100 parts by weight of the coloring material.

The weight molar concentration of the ethylenically unsaturated double bond (based on the weight of the photosensitive resin composition) of the polyfunctional monomer having three or more ethylenically unsaturated double bonds is the weight molar concentration of the ethylenically unsaturated double bond of the photosensitive transparent resin (weight of the photosensitive resin composition). It is preferably 2 to 35 times, and more preferably 2 to 25 times, more preferably 2 to 20 times, and particularly preferably 2 to 15 times for a colored composition of red, magenta or yellow color. In the case of a green colored composition, it is more preferably 3 to 30 times, more preferably 3 to 25 times, and in the case of a blue colored composition, more preferably 5 to 25 times, and more preferably 5 to 5 times. 15 times. When the ratio of the ethylenically unsaturated double bond weight molar concentration of a monomer is less than 2 times, the sensitivity of a coloring composition falls and sufficient curability cannot be obtained when a colored coating film is formed. Moreover, when more than 35 times, although the sensitivity of a coloring composition improves, the dispersion stability may fall and the patterning defect may arise.

As a coloring material contained in the coloring composition for color filters of this invention, organic or inorganic pigment can be used individually or in mixture of 2 or more types. As the pigment, a pigment having high color development and high heat resistance, in particular, a pigment having high thermal decomposition resistance is preferably used. An organic pigment can usually be used. Below, the specific example of the organic pigment which can be used for the coloring composition of this invention is shown by a color index number.

When the red filter segment is formed using the coloring composition of the present invention, for example, CI Pigment Red 7, 14, 41, 48: 1, 48: 2, 48: 3, 48: 4, 81: 1, 81 Red pigments such as: 2, 81: 3, 81: 4, 146, 168, 177, 178, 184, 185, 187, 200, 202, 208, 210, 246, 254, 255, 264, 270, 272, 279 Can be used. As a red coloring composition, orange pigments, such as C. I. Pigment Orange 43, 71, 73, and yellow pigments as illustrated below can be used together.

In addition, when forming a magenta filter segment, purple pigments and red pigments, such as C. I. Pigment Violet 1, 19, C. I. Pigment Red 81, 122, 144, 146, 169, 177, 207, can be used, for example.

In the case of forming a yellow filter segment, for example, CI 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, Yellow pigments, such as 177, 179, 180, 181, 182, 185, 187, 188, 193, 194, 198, 199, 213, 214, can be used.

Examples of the inorganic pigments include yellow lead, zinc sulfur, bengalla (red iron oxide (III)), and cadmium red. Inorganic pigments are used in combination with organic pigments in order to ensure good applicability, sensitivity, developability and the like while balancing saturation and lightness.

When forming a green filter segment using the coloring composition of this invention, green pigments, such as C. I. Pigment Green 7, 10, 36, 37, can be used, for example. The yellow pigment as illustrated above can be used together with a green coloring composition.

Examples of the inorganic pigments include chromium oxide green and cobalt green. Inorganic pigments are used in combination with organic pigments in order to ensure good applicability, sensitivity, developability and the like while balancing saturation and brightness.

In the case of forming the blue filter segment using the coloring composition of the present invention, for example, CI Pigment Blue 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 22, 60 Blue pigments, such as 64, can be used. As a blue coloring composition, purple pigments, such as C. I. Pigment Violet 1, 19, 23, 27, 29, 30, 32, 37, 40, 42, 50, can be used together.

Moreover, when forming a cyan filter segment, blue pigments, such as C. I. Pigment Blue 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 81, can be used, for example.

Examples of the inorganic pigments include the navy blue and green wire. Inorganic pigments are used in combination with organic pigments in order to ensure good applicability, sensitivity, developability and the like while balancing saturation and lightness.

The coloring composition of this invention can be made to contain dye in the range which does not reduce heat resistance for coloring.

The coloring composition of this invention can be manufactured by disperse | distributing a coloring material finely in the photosensitive resin composition using various dispersing means, such as three roll mills, two roll mills, a sand mill, a kneader, an art writer, and a paint conditioner. .

When using a pigment as a coloring material, dispersion adjuvant, such as a resin pigment dispersant, a pigment derivative, and surfactant, can be used suitably. Dispersion aids are excellent in the dispersion of the pigment, and the effect of preventing the reaggregation of the pigment after dispersion is great, and when using a coloring composition obtained by dispersing the pigment in the photosensitive resin composition using a dispersion aid, excellent transparency A color filter can be obtained. The dispersing aid can be used in an amount of preferably 0.1 to 40 parts by weight, and more preferably 0.1 to 30 parts by weight with respect to 100 parts by weight of the coloring material.

The resinous pigment dispersant has a pigment affinity site having a property of adsorbing to the pigment and a site compatible with the photosensitive transparent resin and the non-photosensitive transparent resin, and is adsorbed on the pigment to stabilize dispersion of the pigment into the photosensitive resin composition. It is to work. Examples of the resinous pigment dispersant include polycarboxylic acid esters such as polyurethane and polyacrylates, unsaturated polyamides, polycarboxylic acids, polycarboxylic acid (partial) amine salts, ammonium polycarboxylic acid salts, and polycarboxylic acid alkyls. Amides and salts thereof formed by the reaction of amine salts, polysiloxanes, long-chain polyaminoamide phosphates, hydroxyl-containing polycarboxylic acid esters or their modified products, poly (lower alkylene imines) with polyesters having free carboxyl groups Etc. can be used. In addition, water-soluble resins such as (meth) acrylic acid-styrene copolymer, (meth) acrylic acid- (meth) acrylic acid ester copolymer, styrene-maleic acid copolymer, polyvinyl alcohol, polyvinylpyrrolidone, water-soluble polymer compounds, polyester System, modified polyacrylate, ethylene oxide / propylene oxide adduct, and the like can also be used. These can be used individually or in mixture of 2 or more types.

As a commercially available resin pigment dispersant, Disperbyk-101, 103, 107, 108, 110, 111, 116, 130, 140, 154, 161, 162, 163, 164, 165, 166, 170, 171, manufactured by BIC Chem Corporation 174, 180, 181, 182, 183, 184, 185, 190, 2000, 2001, or Anti-Terra-U, 203, 204, or BYK-P104, P104S, 220S, or Lactimon, Lactimon-WS or Bykumen, etc., SOLSPERSE-3000, 9000, 13240, 13650, 13940, 17000, 18000, 20000, 21000, 24000, 26000, 27000, 28000, 31845, 32000, 32500, 32600, 34750, 36600, 38500, 41000, 41090, EFKA-46, 47, 48, 452, LP4008, 4009, LP4010, LP4050, LP4055, 400, 401, 402, 403, 450, 451, 453, 4540, 4550, LP4560, 120 , 150, 1501, 1502, 1503 and the like.

A dye derivative is a compound which introduce | transduced the substituent into organic pigment | dye. Organic pigments include light yellow aromatic polycyclic compounds such as naphthalene and anthraquinone, which are not generally called dyes. As a dye derivative, Japanese Unexamined Patent Publication No. 63-305173, Japan Special Publication 57-15620, Japanese Special Publication 59-40172, Japanese Special Publication 63-17102, Japanese Special Publication 5- What is described in 9469 etc. can be used, These can be used individually or in mixture of 2 or more types.

As surfactant, polyoxyethylene alkyl ether sulfate, dodecyl benzene sulfonic acid soda, alkali salt of a styrene-acrylic acid copolymer, sodium alkylnaphthalene sulfonate, sodium alkyldiphenylether disulfonate, lauryl sulfate monoethanolamine, lauryl sulfate triethanol Anionic surfactants such as amine, ammonium lauryl sulfate, monoethanolamine stearate, sodium stearate, sodium lauryl sulfate, and monoethanolamine of styrene-acrylic acid copolymer; polyoxyethylene oleyl ether, polyoxyethylene lauryl ether Nonionic surfactants such as polyoxyethylene nonylphenyl ether, polyoxyethylene sorbitan monostearate, polyethylene glycol monolaurate; cationic surfactants such as alkyl quaternary ammonium salts and their ethylene oxide adducts; alkyldimethylamino acetic acid Alkyl betaine, such as betaine And amphoteric surfactants, such as alkyl imidazoline, These can be used individually or in mixture of 2 or more types.

The coloring composition of this invention can contain a storage stabilizer in order to stabilize viscosity over time. 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 tetraphenyl phosphine. Organic phosphines, phosphites, etc. are mentioned. The storage stabilizer is preferably used in an amount of 0.1 to 10 parts by weight with respect to 100 parts by weight of the coloring material.

In addition, in order to make it easy to form a filter segment in a coloring composition of this invention, a coloring material is fully disperse | distributed in the photosensitive resin composition, and it apply | coats so that a dry film thickness may be set to 0.2-5 micrometers on transparent substrates, such as a glass substrate, It can be contained. As a solvent, for example, cyclohexanone, ethyl cellosolve acetate, butyl cellosolve acetate, 1-methoxy-2-propyl acetate, diethylene glycol dimethyl ether, ethylbenzene, ethylene glycol diethyl ether, xylene, ethyl Cellosolve, methyl-n-amyl ketone, propylene glycol monomethyl ether toluene, methyl ethyl ketone, ethyl acetate, methanol, ethanol, isopropyl alcohol, butanol, isobutyl ketone, petroleum solvents, etc .; Use or mix. The solvent is preferably 800 to 4000 parts by weight, more preferably 1000 to 2500 parts by weight with respect to 100 parts by weight of the coloring material.

When curing this composition by light irradiation, such as an ultraviolet-ray, to the coloring composition of this invention, a photoinitiator etc. are added.

As a photoinitiator, 4-phenoxy dichloroacetophenone, 4-t-butyl- dichloro acetophenone, diethoxy acetophenone, 1- (4-isopropyl phenyl) -2-hydroxy-2-methylpropan-1-one , 1-hydroxycyclohexyl phenyl ketone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1butan-1-one, 2-methyl-1- [4- (methyl thio) Acetophenone photoinitiators such as phenyl] -2-morpholinopropane-1one, benzoin photoinitiators such as benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzyl dimethyl ketal, and benzo Benzophenone photoinitiators such as phenone, benzoyl benzoic acid, methyl benzoyl benzoate, 4-phenyl benzophenone, hydroxy benzophenone, acrylated benzophenone, and 4-benzoyl-4'-methyldiphenyl sulfide, thioxanthone, 2- Thioxanthone type photoinitiators, such as chlor thioxanthone, 2-methyl thioxanthone, isopropyl thioxanthone, and 2, 4- diisopropyl thioxanthone, 2,4,6 -Trichloro-s-triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2- (p-methoxy phenyl) -4,6-bis (trichloromethyl)- s-triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) -s-triazine, 2-piperonyl-4,6-bis (trichloromethyl) -s-triazine , 2,4-bis (trichloromethyl) -6-styryl-s-triazine, 2- (naphtho-1-yl) -4,6-bis (trichloromethyl) -s-triazine, 2 -(4-methoxynaphtho-1-yl) -4,6-bis (trichloro methyl) -s-triazine, 2,4-trichloromethyl (piperonyl) -6-triazine, 2, Triazine photoinitiators, such as 4-trichloro methyl (4'-methoxy styryl) -6-triazine, a borate photoinitiator, a carbazole type photoinitiator, an imidazole series photoinitiator, etc. can be used. The photoinitiator can be used in an amount of preferably 5 to 200 parts by weight, more preferably 10 to 150 parts by weight with respect to 100 parts by weight of the coloring material.

Although these photoinitiators are used individually or in mixture of 2 or more types, As a sensitizer, (alpha)-acyloxy ester, acyl phosphine oxide, methylphenyl glyoxylate, benzyl-9, 10- phenanthrene quinone, camphor quinone, Ethyl anthraquinone, 4,4'-diethylisophthalophenone, 3,3 ', 4,4'-tetra (t-butylperoxy carbonyl) benzophenone, 4,4'-diethylaminobenzophenone, etc. You may use together the compound of. The sensitizer can be used in an amount of preferably 0.1 to 60 parts by weight based on 100 parts by weight of the photopolymerization initiator.

It is preferable that a coloring material is contained in a coloring composition (transparent resin, a polyfunctional monomer, a coloring composition containing all components, such as an initiator and a solvent, in addition to a coloring material) in the ratio of 0.5 to 10 weight%. In addition, the coloring material is finally contained in a ratio of preferably 10 to 60% by weight, more preferably 20 to 50% by weight in the filter segment, and the remainder is composed of a photosensitive transparent resin, a non-photosensitive transparent resin and a polyfunctional monomer. Practically.

The colored composition of the present invention, by means of centrifugation, sintering filter, membrane filter and the like, removes 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 and mixed dust. It is preferable.

Next, the color filter of this invention is demonstrated.

The color filter of this invention is a color filter provided with the filter segment formed from the coloring composition for color filters of this invention. The color filter includes an additive mixed color type having at least one red filter segment, at least one green filter segment, and at least one blue filter segment, and at least one magenta filter segment, at least one cyan filter segment, and There is a subtractive mixed color type having at least one yellow filter segment, and at least one color filter segment is formed using the colored composition of the present invention.

Filter segments other than the filter segment formed using the coloring composition of this invention can be formed using the general coloring pigment composition containing a pigment pigment, the said non-photosensitive transparent resin, and the said polyfunctional monomer. It is preferable to form all the filter segments using the coloring composition of this invention from a viewpoint of patterning property and solvent resistance.

The color filter of this invention can be manufactured by the photolithographic method by forming various filter segments on a board | substrate using the coloring composition of this invention and a general coloring pigment composition.

As a board | substrate, the glass plate with high transmittance | permeability with respect to visible light, and resin plates, such as polycarbonate, polymethyl methacrylate, and a polyethylene terephthalate, can be used.

Formation of each color filter segment by a photolithography method is performed by the following method. That is, the pigmented photosensitive composition prepared by using the above-described solvent developing type or alkali developing type colored resist material cured by light irradiation is applied on a transparent substrate by a coating method such as spray coat, spin coat, slit coat, roll coat or the like. And apply | coated so that a dry film thickness might be 0.2-5 micrometers. Ultraviolet exposure is performed to the film dried as needed through the mask which has a predetermined pattern provided in contact or non-contact state with this film. Subsequently, the color filter can be manufactured by immersing in a solvent or an alkaline developing solution, or spraying a developing solution with a spray or the like to remove the uncured portion to form a desired pattern, and then repeating the same operation for other colors. Moreover, in order to accelerate superposition | polymerization of a coloring resist material, you may heat as needed. According to the photolithography method, a color filter with higher precision than the printing method can be manufactured.

In development, aqueous solutions, such as sodium carbonate and sodium hydroxide, are used as alkaline developing solution, and organic alkalis, such as dimethylbenzyl amine and a triethanolamine, can also be used. Moreover, an antifoamer and surfactant can also be added to a developing solution.

Further, in order to increase the UV exposure sensitivity, after coating and drying the colored resist material, a water-soluble or alkali-soluble resin such as polyvinyl alcohol or a water-soluble acrylic resin is applied and dried to form a film to prevent polymerization inhibition by oxygen. After that, ultraviolet light exposure may be performed.

(Example)

EMBODIMENT OF THE INVENTION Although this invention is demonstrated based on an Example below, this invention is not limited by this. In addition, in a following example and a comparative example, a "part" means a "weight part." The molecular weight of resin is the weight average molecular weight of polystyrene conversion measured by GPC (gel permeation chromatography).

Synthesis Example 1 of Photosensitive Transparent Resin

560 parts of cyclohexanone were put into a reaction container, and it heated at 80 degreeC, injecting nitrogen gas into a container, 34.0 parts of methacrylic acid, 23.0 parts of methyl methacrylate, 23.0 parts of monomers, 23.0 parts, and a monomer at the same temperature. (a) 22.0 parts of paracumyl phenol ethylene oxide modified acrylate ("Aronix M110" by Toagosei Co., Ltd.), 47.0 parts of glycerol monomethacrylate, 4.0 parts of 2,2'- azobisisobutyronitrile The mixture was added dropwise over 1 hour to conduct a polymerization reaction. After completion | finish of dripping, after making it react for 3 hours again at 80 degreeC, the thing which melt | dissolved 1.0 part of azobisisobutyronitrile in 55 parts of cyclohexanone was added, and reaction was continued at 80 degreeC for 1 hour, and the transparent resin solution was obtained further. .

Next, to 338 parts of the obtained transparent resin solution, a mixture of 32.0 parts of 2-methcloylethyl isocyanate, 0.4 part of dibutyl tin laurate and 120.0 parts of cyclohexanone was added dropwise at 70 ° C. over 3 hours, and then the photosensitive transparent resin solution Got. After cooling to room temperature, about 2 g of the photosensitive transparent resin solution was sampled, dried at 180 ° C. for 20 minutes, and the nonvolatile content was measured. Based on the measurement result, cyclohexanone was added to the cyclohexanone so that the nonvolatile content was 20% by weight. The desired photosensitive resin solution was prepared by adding to the rest of the transparent resin solution. The weight average molecular weight (Mw) of the obtained photosensitive transparent resin (1) was 21000, and the double bond equivalent was 470.

Synthesis Example 2 of Photosensitive Transparent Resin

570 parts of cyclohexanone were put into a reaction container, and it heated at 80 degreeC, injecting nitrogen gas into a container, 23.0 parts of methacrylic acid, 23.0 parts of methyl methacrylate, 35.0 parts of benzyl methacrylate, and a monomer (a) at the same temperature. As a mixture of 22.0 parts of paracumyl phenol ethylene oxide modified acrylate ("Aronix M110" by Toagosei Co., Ltd.), 48.0 parts of glycerol monomethacrylate, and 3.0 parts of 2,2'- azobisisobutyronitrile, It was dripped over time and the polymerization reaction was performed. After completion | finish of dripping, after making it react for 3 hours again at 80 degreeC, what melt | dissolved 1.0 part of azobisisobutyronitrile in 50 parts of cyclohexanone was added, and reaction was continued at 80 degreeC for 1 hour further, and the transparent resin solution was obtained. .

Next, to 336 parts of the obtained transparent resin solution, a mixture of 33.0 parts of 2-methacryloylethyl isocyanate, 0.4 part of dibutyl tin laurate and 130.0 parts of cyclohexanone was added dropwise at 70 ° C. over 3 hours, and then the photosensitive transparent resin solution Got. After cooling to room temperature, about 2 g of the photosensitive transparent resin solution was sampled, dried at 180 ° C. for 20 minutes, and the nonvolatile content was measured. Based on the measurement result, cyclohexanone was added to the cyclohexanone so that the nonvolatile content was 20% by weight. The desired photosensitive resin solution was prepared by adding it to the rest of the transparent resin solution. The weight average molecular weight (Mw) of the obtained photosensitive transparent resin (2) was 32000, and the double bond equivalent was 460.

Synthesis Example 3 of Photosensitive Transparent Resin

520 parts of cyclohexanone were placed in a reaction vessel, heated to 80 ° C while injecting nitrogen gas into the container, and 7.0 parts of methacrylic acid, 7.0 parts of methyl methacrylate, 63.0 parts of 2-hydroxyethyl methacrylate, A mixture reaction of 66.0 parts of glycerol monomethacrylate and 4.0 parts of 2,2'-azobisisobutyronitrile was added dropwise over 1 hour to conduct a polymerization reaction. After completion | finish of dripping, after making it react for 3 hours again at 80 degreeC, what melt | dissolved 1.0 part of azobisisobutyronitrile in 70 parts of cyclohexanone was added, and reaction was continued at 80 degreeC for 1 hour, and the transparent resin solution was obtained further. .

Subsequently, a mixture of 56.0 parts of 2-methchloroylethyl isocyanate, 0.4 part of dibutyl tin laurate and 220.0 parts of cyclohexanone was added dropwise at 70 ° C. to 220 parts of the obtained transparent resin solution over 3 hours to form a photosensitive transparent resin solution. Got. After cooling to room temperature, about 2 g of the photosensitive transparent resin solution was sampled, dried at 180 ° C. for 20 minutes, and the nonvolatile content was measured. Based on the measurement result, cyclohexanone was added to the cyclohexanone so that the nonvolatile content was 20% by weight. The desired photosensitive resin solution was prepared by adding to the rest of the transparent resin solution. The weight average molecular weight (Mw) of the obtained photosensitive transparent resin (3) was 20000, and the double bond equivalent was 270.

Synthesis Example 4 of Photosensitive Transparent Resin

480 parts of cyclohexanone were put into a reaction vessel, heated to 80 ° C while injecting nitrogen gas into the container, and 32.0 parts of methacrylic acid, 24.0 parts of methyl methacrylate, 16.0 parts of n-butyl methacrylate and benzyl meta at the same temperature. 29.0 parts of acrylates, 19.0 parts of paracumyl phenol ethylene oxide modified acrylate ("Aronix M110" made by Toagosei Co., Ltd.) as a monomer (a), 15.0 parts of glycerol monomethacrylate, 2,2'- azobis The mixture of 4.0 parts of isobutyronitrile was dripped over 1 hour, and superposition | polymerization reaction was performed. After completion | finish of dripping, after making it react at 80 degreeC again for 3 hours, the thing which melt | dissolved 1.0 part of azobisisobutyronitrile in 80 parts of cyclohexanone was added, and reaction was continued at 80 degreeC for 1 hour, and the transparent resin solution was obtained further. .

Next, to 445 parts of the obtained transparent resin solution, a mixture of 14.0 parts of 2-methchloroylethyl isocyanate, 0.4 part of dibutyl tin laurate and 55.0 parts of cyclohexanone was added dropwise at 70 ° C. over 3 hours, and then the photosensitive transparent resin solution Got. After cooling to room temperature, about 2 g of the photosensitive transparent resin solution was sampled, dried at 180 ° C. for 20 minutes, and the nonvolatile content was measured. Based on the measurement result, cyclohexanone was added to the cyclohexanone so that the nonvolatile content was 20% by weight. The desired photosensitive resin solution was prepared by adding to the rest of the transparent resin solution. The weight average molecular weight (Mw) of the obtained photosensitive transparent resin 4 was 21000, and the double bond equivalent was 1000.

Synthesis Example 5 of Photosensitive Transparent Resin

560 parts of cyclohexanone were put into a reaction container, and it heated at 80 degreeC, injecting nitrogen gas into a container, 22.0 parts of methacrylic acid, 22.0 parts of n-butyl methacrylate, and 104.0 of 2-hydroxyethyl methacrylate at the same temperature. A mixture of 4.0 parts of 2,2'-azobisisobutyronitrile was added dropwise over 1 hour to conduct a polymerization reaction. After completion | finish of dripping, after making it react for 3 hours again at 80 degreeC, what melt | dissolved 1.0 part of azobisisobutyronitrile in 50 parts of cyclohexanone was added, and reaction was continued at 80 degreeC for 1 hour further, and the transparent resin solution was obtained. .

Next, to 338 parts of the obtained transparent resin solution, a mixture of 33.0 parts of 2-methchloroylethyl isocyanate, 0.4 part of dibutyl tin laurate and 130.0 parts of cyclohexanone was added dropwise at 70 ° C. over 3 hours, and then the photosensitive transparent resin solution Got. After cooling to room temperature, about 2 g of the photosensitive transparent resin solution was sampled, dried at 180 ° C. for 20 minutes, and the nonvolatile content was measured. Based on the measurement result, cyclohexanone was added to the cyclohexanone so that the nonvolatile content was 20% by weight. The desired photosensitive resin solution was prepared by adding to the rest of the transparent resin solution. The weight average molecular weight (Mw) of the obtained photosensitive transparent resin (5) was 20000, and the double bond equivalent was 470.

Synthesis Example 6 of Photosensitive Transparent Resin

570 parts of cyclohexanone were put into a reaction vessel, heated to 80 ° C while injecting nitrogen gas into the container, and 7.0 parts of methacrylic acid, 11.0 parts of methyl methacrylate, 32.0 parts of benzyl methacrylate, and 2-hydroxy at the same temperature. A mixture reaction of 101.0 parts of ethyl methacrylate and 3.0 parts of 2,2'-azobisisobutyronitrile was added dropwise over 1 hour to conduct a polymerization reaction. After completion | finish of dripping, after making it react for 3 hours again at 80 degreeC, what melt | dissolved 1.0 part of azobisisobutyronitrile in 50 parts of cyclohexanone was added, and reaction was continued at 80 degreeC for 1 hour further, and the transparent resin solution was obtained. .

Next, to 337 parts of the obtained transparent resin solution, a mixture of 33.0 parts of 2-methchloroylethyl isocyanate, 0.4 part of dibutyl tin laurate and 130.0 parts of cyclohexanone was added dropwise at 70 ° C. over 3 hours, and then the photosensitive transparent resin solution Got. After cooling to room temperature, about 2 g of the photosensitive transparent resin solution was sampled, dried at 180 ° C. for 20 minutes, and the nonvolatile content was measured. Based on the measurement result, cyclohexanone was added to the cyclohexanone so that the nonvolatile content was 20% by weight. The desired photosensitive resin solution was prepared by adding to the rest of the transparent resin solution. The weight average molecular weight (Mw) of the obtained photosensitive transparent resin 6 was 30000, and the double bond equivalent was 460.

Synthesis Example 1 of Non-Photosensitive Transparent Resin

370 parts of cyclohexanone were put into the reaction vessel, heated to 80 ° C while injecting nitrogen gas into the container, and 20.0 parts of methacrylic acid, 10.0 parts of methyl methacrylate, 55.0 parts of n-butyl methacrylate and 2- at the same temperature. A mixture of 15.0 parts of hydroxyethyl methacrylate and 4.0 parts of 2,2'-azobisisobutyronitrile was added dropwise over 1 hour to conduct a polymerization reaction. After completion | finish of dripping, after making it react for 3 hours again at 80 degreeC, what melt | dissolved 1.0 part of azobisisobutyronitrile in 50 parts of cyclohexanone was added, and reaction was continued at 80 degreeC for 1 hour further, and the non-photosensitive transparent resin solution was carried out. Got.

After cooling to room temperature, about 2 g of the non-photosensitive transparent resin solution was sampled, dried at 180 ° C. for 20 minutes, and the non-volatile content was measured. Based on the measurement result, cyclohexanone was added so that the non-volatile content was 20% by weight. The desired non-photosensitive resin solution was prepared by adding to the rest of the non-photosensitive transparent resin solution. The weight average molecular weight (Mw) of the obtained nonphotosensitive transparent resin (1) was 40000.

Synthesis Example 2 of Non-Photosensitive Transparent Resin

70 parts of cyclohexanone was added to the reaction vessel, heated to 80 ° C while injecting nitrogen gas into the container, 12.3 parts of n-butyl methacrylate, 4.6 parts of 2-hydroxyethyl methacrylate, and 5.3 methacrylic acid at the same temperature. In addition, as a monomer (a), a mixture of 7.4 parts of paracumyl phenol ethylene oxide modified acrylate ("Aronix M110" by Toagosei Co., Ltd.) and 0.4 parts of 2,2'- azobisisobutyronitrile is carried out over 2 hours. It was dripped and the polymerization reaction was performed. After completion | finish of dripping, after making it react at 80 degreeC again for 3 hours, the thing which melt | dissolved 0.2 parts of azobisisobutyronitrile in 10 parts of cyclohexanone was added, and reaction was continued at 80 degreeC for 1 hour further, and the non-photosensitive transparent resin solution was carried out. Got.

After cooling to room temperature, about 2 g of the non-photosensitive transparent resin solution was sampled, dried at 180 ° C. for 20 minutes, and the non-volatile content was measured. Based on the measurement result, cyclohexanone was added so that the non-volatile content was 20% by weight. The desired non-photosensitive resin solution was prepared by adding to the rest of the non-photosensitive transparent resin solution. The weight average molecular weight (Mw) of the obtained nonphotosensitive transparent resin (2) was 27000.

Synthesis Example 3 of Non-Photosensitive Transparent Resin

70 parts of cyclohexanone was added to the reaction vessel, heated to 80 ° C while injecting nitrogen gas into the container, and 14.4 parts of n-butyl methacrylate, 4.6 parts of 2-hydroxyethyl methacrylate and 3.2 methacrylic acid were added at the same temperature. In addition, a mixture of 7.4 parts of paracumyl phenol ethylene oxide modified acrylate ("Aronix M110" by Toagosei Co., Ltd.) as a monomer (a) and 0.4 part of 2,2'- azo bis isobutyronitrile over 2 hours It was dripped and the polymerization reaction was performed. After completion | finish of dripping, after making it react at 80 degreeC again for 3 hours, the thing which melt | dissolved 0.2 parts of azobisisobutyronitrile in 10 parts of cyclohexanone was added, and reaction was continued at 80 degreeC for 1 hour further, and the non-photosensitive transparent resin solution was carried out. Got.

After cooling to room temperature, about 2 g of the non-photosensitive transparent resin solution was sampled, dried at 180 ° C. for 20 minutes, and the non-volatile content was measured. Based on the measurement result, cyclohexanone was added so that the non-volatile content was 20% by weight. The desired non-photosensitive resin solution was prepared by adding to the rest of the non-photosensitive transparent resin solution. The weight average molecular weight (Mw) of the obtained nonphotosensitive transparent resin 3 was 25000.

The weight average molecular weight (Mw) of the photosensitive transparent resin (1-6) obtained by the synthesis examples 1-6 of the photosensitive transparent resin, and the nonphotosensitive transparent resin (1-3) obtained by the synthesis examples 1-3 of the non-photosensitive transparent resin, The double bond equivalents and acid values are shown in Table 1. In addition, the acid value was measured and calculated based on JIS-K-0070.

Example 1

<Preparation of Pigment Dispersion>

The mixture of the following composition was uniformly stirred and mixed, and then dispersed in an Eiger mill (“Mini Model M-250 MKII” manufactured by Eiger Japan) for 2 hours using zirconia beads having a diameter of 1 mm, followed by filtration with a 5 μm filter. And the pigment dispersion were prepared.

Red pigment: Diketopyrrolopyrrole pigment (C.I. Pigment Red 254) (`` Iruga pored B-CF '' made by Chiba Specialty Chemicals): 11.0 parts

Diketopyrrolopyrrole pigment derivative (formula (2) below): 1.0 part

Photosensitive transparent resin (1) solution: 10.0 parts

Non-photosensitive transparent resin (1) Solution: 30.0 parts

Cyclohexanone: 50.0 parts

<Preparation of red coloring composition>

The mixture of the following composition was stirred and mixed so as to be uniform, and then filtered through a 1 μm filter to obtain a red colored composition having photosensitivity.

Pigment dispersion prepared above: 37.5 parts

Photosensitive transparent resin (1) solution: 11.8 parts

Non-photosensitive transparent resin (1) solution: 12.2 parts

Pentaerythritol triacrylate hexamethylene diisocyanate: 4.1 parts

Photopolymerization initiator ("irgacure -907" made by Chiba specialty chemicals company): 1.5 copies

A sensitizer ("EAB-F" made by Hodogaya Chemical Corporation): 0.1 copy

Cyclohexanone: 32.8 parts

Examples 2 to 28 and Comparative Examples 1 to 5

The photosensitive transparent resin solution, the non-photosensitive transparent resin solution and the polyfunctional monomer (refer to Table 2) shown in Table 3 are blended so as to have the ratio (weight ratio of solid content) shown in Table 3, and in the same manner as in Example 1 to have photosensitivity. Red or magenta [Example 9: The pigment is a quinacridone pigment ("Fastgen Super", manufactured by Dainippon Ink Kigaku Co., Ltd., CI Pigment Red 207) and a quinacridone pigment (CINQUASIA Violet RNRT-, manufactured by Chivas Specialty Chemicals Co., Ltd.). 201-D ”and CI Pigment Violet 19) were mixed and used at a weight ratio of 7/3. As the pigment derivative, a quinacridone pigment derivative (formula (3)) was used.] Or yellow (Example 24: Pigment iso indorin pigment (&quot; Irgapo Yellow 2R-CF &quot; manufactured by Chivas Specialty Chemicals Co., Ltd.); CI Pigment Yellow 139) was used. As the pigment derivative, an azo pigment derivative (formula (4)) was used.] A colored composition (red or magenta or yellow resist material) was obtained. For the photosensitive transparent resin and the non-photosensitive transparent resin, a photosensitive transparent resin solution and a non-photosensitive transparent resin solution were prepared so as to have a ratio shown in Table 3 together with the polyfunctional monomer. The ratio which combined these three components in 100 weight part of obtained coloring compositions is the same with respect to Examples 1-28 and Comparative Examples 1-5.

Table 3 shows the content (wt%) ratio of the photosensitive transparent resin to all the resins based on the total weight of the photosensitive transparent resin and the non-photosensitive transparent resin, the photosensitive transparent resin contained in the colored composition, the non-photosensitive transparent resin, and c. On the basis of the total weight of the functional monomer, the weight molar concentration (Cb) of the ethylenically unsaturated double bond contained in this polyfunctional monomer to the ethylenically unsaturated double bond weight molar concentration (Ca) contained in this photosensitive transparent resin. The weight molar concentration of the ethylenically unsaturated double bond in the coloring composition based on the ratio (Cb / Ca), the total weight of the photosensitive transparent resin, the non-photosensitive transparent resin, and the polyfunctional monomer contained in the colored composition (density of the functional group). (mol / g) is respectively calculated. (In Comparative Example 3, the coloring composition was obtained by using the double bond equivalent of the bifunctional monomer and the weight of the bifunctional monomer. The ethylenically unsaturated double bond molar polymerization concentration was calculated.)

Quinacridone pigment derivatives:

Azo pigment derivatives:

About the coloring composition obtained in Examples 1-28 and Comparative Examples 1-5, viscosity stability, sensitivity, patterning property, and solvent resistance were evaluated by the following method.

Viscosity Stability Evaluation

The initial viscosity of the day after the coloring composition was prepared and the time-lapsed viscosity which were accelerated over time for one week at 40 ° C. were measured under conditions of a rotational speed of 20 rpm at 25 ° C. using an E-type viscometer (“ELD type viscometer” manufactured by Kagyo Sankyo Co., Ltd.). It was. Table 4 shows the results of calculating the rate of change from the initial viscosity to the temporal viscosity in the following equation.

[Registration Viscosity Variation Rate] = | ([Initial Viscosity]-[Time-viscosity Viscosity]) / [Initial Viscosity] × 100 |

<Sensitivity evaluation>

The coloring composition was apply | coated using the spin coater on the glass substrate of 100 mm x 100 mm and 1.11 mm thickness, and the coating film of 2.0 micrometers in thickness was formed. Next, after prebaking for 20 minutes at 70 degreeC, ultraviolet-ray exposure was performed through the mask provided with the 50 micrometer fine wire pattern. The exposure was performed at an exposure level of 8 levels between 10 mJ / cm 2 and 200 mJ / cm 2. After exposure, it developed for 90 second with alkaline developing solution, and formed the stripe-shaped filter segment. In addition, as an alkaline developing solution, what consists of 8.0 weight% of sodium 1.5 weight% sodium hydrogencarbonate 0.5 weight% anionic surfactant ("Perryex NBL" by Kao Corporation), and 90 weight% of water was used.

The remaining film ratio after exposure and image development in each exposure dose level when the film thickness of the obtained filter segment was set to 100 unexposed and the image development part was computed. From the obtained residual film ratio curve, the amount of exposure that the residual film rate reaches saturation was determined as the saturation exposure amount and the residual film rate as the saturated residual film rate. The obtained saturated exposure amount and the saturated residual film ratio are shown in Table 4.

<Patternity Evaluation>

In the sensitivity evaluation, after producing a substrate by the same method, except that the exposure amount of ultraviolet rays was set to an appropriate time for washing the unexposed part of each resist coating film with the developing time in a saturated exposure amount of +50 mJ / cm 2 and an alkaline developer, The heat treatment was performed at 230 ° C. for 60 minutes, and the shape of the thin wire pattern was evaluated by (1) the line width precision of the pattern (the value after patterning with respect to the line width of the mask pattern) (2) the cross-sectional shape of the pattern. About (1), evaluation was performed using the optical microscope. Table 4 shows the results of the evaluation. As for the rank of evaluation, the difference with the line width of (circle): mask pattern was 5% or less, (triangle | delta): 5-10% of difference with the line width of mask pattern was made into 10% or more. About (2), evaluation was performed using the scanning electron microscope (SEM). The rank of evaluation was made into (circle): forward taper shape, (triangle | delta): non-taper shape, and x: reverse taper shape.

<Evaluation of solvent resistance>

Similarly to the evaluation of sensitivity, a prebaked coating film was prepared, and UV exposure was performed using a super high pressure mercury lamp with a saturation exposure amount of +50 mJ / cm 2 through a mask having a 50 μm thin wire pattern. After exposure, it developed for 90 second with the alkaline developing solution, and formed the stripe-shaped color filter segment on the board | substrate. The developed board | substrate was heat-processed at 230 degreeC for 60 minutes. A part of the board | substrate was immersed in N-methylpyrrolidone (NMP) for 30 minutes, and the state of the pattern surface was observed with the optical microscope. (Circle) that a change was not confirmed, and that a crack was confirmed for a while, (triangle | delta), and the thing where a severe crack etc. were confirmed were called x. The results are shown in Table 4.

As shown in Table 4, when the mixing ratio of each component of the photosensitive transparent resin, the non-photosensitive transparent resin, and the multifunctional monomer having three or more ethylenically unsaturated double bonds is not suitable, especially when the functional group density is not in an appropriate range. The color composition may have insufficient sensitivity or poor patterning properties. On the other hand, when the compounding ratio of each component in a coloring composition is suitable, both high sensitivity and favorable patterning property can be compatible. The dispersion stability and patterning property of the colored composition are also greatly influenced by the properties and ratios of the photosensitive transparent resin and the non-photosensitive transparent resin to be blended in the colored composition. In Examples 21, 22, and 24, the photosensitive transparent resin and the non-photosensitive excellent dispersion property By using a transparent resin and blending an appropriate amount of photosensitive transparent resin in a good balance, both dispersion stability and good patterning property are achieved. In addition, by mixing the appropriate amount of the photosensitive transparent resin in the colored composition, it was possible to obtain a red, magenta or yellow coating film excellent in solvent resistance so far.

Example 29

<Preparation of Pigment Dispersion>

After the mixture of the following composition was stirred and mixed uniformly, it disperse | distributed with Eiger mill ("Mini Model M-250MKII" by Eiger Japan company) using zirconia beads of diameter 1mm, and filtered with a 5 micrometer filter, A pigment dispersion was prepared.

Green Pigment: C. I. Pigment Green 36 (Toyo Inkisei Research Co., Ltd. `` Rionol Green 6YK ''): 7.1 copies

Yellow pigment: C. I. Pigment Yellow 150 (`` E4GN-GT '' made in Bayer company): 3.9 parts

Azo pigment derivative of the formula (4): 1.0 parts

Photosensitive transparent resin (1) solution: 10.0 parts

Non-photosensitive transparent resin (1) Solution: 30.0 parts

Cyclohexanone: 50.0 parts

<Preparation of green coloring composition>

The mixture of the following composition was stirred and mixed so as to be uniform, and then filtered through a 1 μm filter to obtain a green colored composition having photosensitivity.

Pigment dispersion prepared above: 67.0 parts

Photosensitive transparent resin (1) Solution: 2.0 parts

Non-photosensitive transparent resin (1) solution: 3.0 parts

Dipentaerythritol hexaacrylate: 4.0parts

Photopolymerization initiator ("irgacure -907" made by Chiba specialty chemicals company): 1.4 copies

A sensitizer ("EAB-F" made by Hodogaya Chemical Co., Ltd.): 0.2 copy

Cyclohexanone: 22.4 parts

Examples 30-55 and Comparative Examples 6-10

The photosensitive transparent resin solution, the non-photosensitive transparent resin solution, and the polyfunctional monomer (refer to Table 2) shown in Table 5 are compounded so that the ratio in the photosensitive resin composition becomes the ratio (weight ratio of solid content) shown in Table 5, and is carried out. In the same manner as in Example 29, a green colored composition (green resist material) having photosensitivity was obtained. For the photosensitive transparent resin and the non-photosensitive transparent resin, a photosensitive transparent resin solution and a non-photosensitive transparent resin solution were prepared so as to have a ratio shown in Table 5 together with the polyfunctional monomer. The ratio which combined these three components in 100 weight part of obtained green coloring compositions is the same with respect to Examples 29-45 and Comparative Examples 6-10. Table 5 shows the results of calculating the content (wt%) ratio of the photosensitive transparent resin, the Cb / Ca, and the density of the functional groups, respectively, as in Table 3. (In Comparative Example 8, double of the bifunctional monomers is shown. The ethylenically unsaturated double bond molar polymerization concentration of the green colored composition was calculated using the equivalent weight and the weight of the bifunctional monomer.)

About the green coloring composition obtained in Examples 29-55 and Comparative Examples 6-10, viscosity stability, sensitivity, patterning property, and solvent resistance were evaluated similarly to the above. The results are shown in Table 6.

As shown in Table 6, when the compounding ratio of each component of the photosensitive transparent resin, the non-photosensitive transparent resin, and the polyfunctional monomer having three or more ethylenically unsaturated double bonds is not suitable, especially when the functional group density is not in an appropriate range. The green coloring composition may have insufficient sensitivity or poor patterning properties. On the other hand, when the compounding ratio of each component in a green coloring composition is suitable, high sensitivity and favorable patterning property can be compatible. The dispersion stability and patterning properties of the green coloring composition are greatly influenced by the properties and ratios of the photosensitive transparent resin and the non-photosensitive transparent resin to be blended in the green coloring composition, and in Examples 48, 49, and 51, the photosensitive transparent resin having excellent dispersibility and By using a non-photosensitive transparent resin and mix | blending an appropriate amount of photosensitive transparent resin in a balanced manner, dispersion | distribution stability and favorable patterning property are compatible. In addition, by blending an appropriate amount of the photosensitive transparent resin in the green coloring composition, it was possible to obtain a green coating film excellent in solvent resistance that has not existed until now.

Example 56

<Preparation of Pigment Dispersion>

After the mixture of the following composition was stirred and mixed uniformly, it disperse | distributed with Eiger mill ("Mini Model M-250MKII" by Eiger Japan company) using zirconia beads of diameter 1mm, and filtered with a 5 micrometer filter, A pigment dispersion was produced.

ε type copper phthalocyanine pigment (C.I. Pigment Blue 15: 6) (`` Heiogen blue L-6700F '' made by BASF): 11.0 parts

Phthalocyanine pigment derivative (following formula (5)): 1.0 part

Photosensitive transparent resin (1) Solution: 9.9 parts

Non-photosensitive transparent resin (2) Solution: 30.1 parts

Cyclohexanone: 48.0 parts

<Preparation of Blue Coloring Composition>

The mixture of the following composition was stirred and mixed so as to be uniform, and then filtered through a 1 μm filter to obtain a blue colored composition having photosensitivity.

Pigment dispersion prepared above: 45.0 parts

Photosensitive transparent resin (1) Solution: 15.9 parts

Dipentaerythritol hexaacrylate: 5.4parts

Photopolymerization initiator ("irgacure -907" made by Chiba specialty chemicals company): 2.0 copies

A sensitizer ("EAB-F" made by Hodogaya Chemical Co., Ltd.): 0.2 copy

Cyclohexanone: 31.5 parts

Examples 57-83 and Comparative Examples 11-15

The photosensitive transparent resin solution, the non-photosensitive transparent resin solution and the polyfunctional monomer (refer to Table 2) shown in Table 7 are blended so as to have the ratio (weight ratio of solid content) shown in Table 7, and the photosensitivity is carried out in the same manner as in Example 57. A blue coloring composition (blue resist material) was obtained. For the photosensitive transparent resin and the non-photosensitive transparent resin, the photosensitive transparent resin solution and the non-photosensitive transparent resin solution were adjusted so as to have a ratio shown in Table 7 together with the polyfunctional monomer. The ratio which combined these three components in 100 weight part of obtained blue coloring compositions is the same with respect to Examples 56-83 and Comparative Examples 11-15. In Table 7, the result of having computed content (weight%) ratio of photosensitive transparent resin, Cb / Ca, and the density of a functional group, respectively similarly to Table 3 is shown. (In Comparative Example 13, double of a bifunctional monomer is shown. The ethylenically unsaturated double bond molar polymerization concentration of the blue colored composition was calculated using the equivalent weight and the weight of the bifunctional monomer.)

About the blue coloring composition obtained in Examples 56-83 and Comparative Examples 11-15, viscosity stability, a sensitivity, patterning property, and solvent resistance were evaluated similarly to the above. The results are shown in Table 8.

As shown in Table 8, when the mixing ratio of each component of the photosensitive transparent resin, the non-photosensitive transparent resin, and the polyfunctional monomer having three or more ethylenically unsaturated double bonds is not suitable, especially when the functional group density is not in an appropriate range. The sensitivity as the blue coloring composition is insufficient, or the patterning property is poor. On the other hand, when the compounding ratio of each component in a blue coloring composition is suitable, high sensitivity and favorable patterning property can be compatible. The dispersion stability and patterning properties of the blue coloring composition are greatly influenced by the properties and ratios of the photosensitive transparent resin and the non-photosensitive transparent resin to be blended in the blue coloring composition. By using a non-photosensitive transparent resin and mix | blending an appropriate amount of photosensitive transparent resin in a balanced manner, dispersion | distribution stability and favorable patterning property are compatible. Moreover, by mix | blending an appropriate amount of photosensitive transparent resin in a blue coloring composition, the blue coating film excellent in the solvent resistance which has not existed so far was obtained.

Since the coloring composition for color filters of this invention contains photosensitive transparent resin, a non-photosensitive transparent resin, and a polyfunctional monomer as an essential component, and the density | concentration of a photoreactive site is controlled, dispersion stability and high sensitivity as a color composition for color filters are controlled. Excellent patterning and chemical resistance can be achieved.

Further, the color composition for color filters of the present invention has higher solvent resistance than the color composition for color filters of the prior art and is highly sensitive, so that it is sufficiently cured with a small exposure amount and is excellent in productivity. Therefore, by forming the filter segment using the color filter coloring composition of the present invention, it is possible to stably produce a high quality transmissive and reflective color liquid crystal display device and a color filter for color separation of the solid state image pickup device.

Claims (13)

A color composition comprising a photosensitive transparent resin, a non-photosensitive transparent resin, a polyfunctional monomer having three or more ethylenically unsaturated double bonds, and a coloring material, wherein the weight molar concentration of the ethylenically unsaturated double bond in the coloring composition is determined by a transparent resin, wherein the non-photosensitive transparent resin and the multi-functional monomer, based on the total weight of the coloring composition for a color filter, characterized in that ^{1.0 × 10 -3 mol / g~7.0 ×} 10 -3 mol / g. 2. The color composition for color filters according to claim 1, wherein the double bond equivalent of the photosensitive transparent resin is 200 to 1200. The color composition for color filters according to claim 1, wherein the content of the photosensitive transparent resin is 15 to 80% by weight based on the total weight of the photosensitive transparent resin and the non-photosensitive transparent resin. The method of claim 1, wherein the photosensitive transparent resin or the non-photosensitive transparent resin is a copolymerized component, the following formula (1): (Formula 1)

(In formula (1), R <_1> represents a hydrogen atom or a methyl group, R <_2> represents a C2-C10 alkylene group, and R <_3> may contain a hydrogen atom or a benzene ring, and carbon number 1 The alkyl group of -20 is represented, n represents the integer of 1-15. The coloring composition for color filters containing the ethylenically unsaturated monomer (a) represented by (a). The coloring composition for color filters according to claim 1, wherein an acid value of the photosensitive transparent resin is lower than that of the non-photosensitive transparent resin. The weight molar concentration of the ethylenically unsaturated double bond of the polyfunctional monomer is based on the total weight of the photosensitive transparent resin, the non-photosensitive transparent resin, and the polyfunctional monomer. Color composition for color filters, characterized in that 2 to 35 times the molar concentration of the unsaturated double bond. The said coloring material is red, magenta, or yellow, The weight molar concentration of the ethylenically unsaturated double bond in this coloring composition is the said photosensitive transparent resin, The said non-photosensitive property of any one of Claims 1-6. and the transparent resin is, based on the total weight of the polyfunctional monomer ^{1.0 × 10 -3 mol / g~4.0 ×} 10 -3 mol / g of the color filter colorant composition according to claim. The said coloring material is green, The weight molar concentration of the ethylenically unsaturated double bond in this coloring composition is the said photosensitive transparent resin, the said non-photosensitive transparent resin, and the said polyfunctionality in any one of Claims 1-6. based on the total weight of monomer and ^{2.5 × 10 -3 mol / g~5.0 ×} 10 -3 mol / g of the color filter colorant composition according to claim. The said coloring material is blue, The weight molar concentration of the ethylenically unsaturated double bond in this coloring composition is the said photosensitive transparent resin, the said non-photosensitive transparent resin, and the said polyfunctionality in any one of Claims 1-6. based on the total weight of monomer and ^{3.0 × 10 -3 mol / g~7.0 ×} 10 -3 mol / g of the color filter colorant composition according to claim. The color filter provided with the filter segment formed from the coloring composition for color filters of Claim 1. The color filter provided with the filter segment formed from the coloring composition for color filters of Claim 7. The color filter provided with the filter segment formed from the coloring composition for color filters of Claim 8. The color filter provided with the filter segment formed from the coloring composition for color filters of Claim 9.