JP2009008740A - Partition, color filter and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a partition for a color filter, restraining penetration of ink components. <P>SOLUTION: This partition, which partitions a plurality of colored regions formed on a substrate with coloring liquid compositions, contains metal particles and an ink-repellent compound in the partition, and the volume ratio of the metal particles in the partition is set to 0.2-13 vol.%. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a partition wall, a color filter, and a display device.

In recent years, the demand for liquid crystal displays for personal computers and liquid crystal color televisions has been increasing, and there has been an increasing demand for improved characteristics and cost reduction of color filters essential for such displays.
Conventionally, as a method for producing a color filter, a dyeing method, a pigment dispersion method, an electrodeposition method, a printing method, and the like have been performed.

For example, in the dyeing method, a water-soluble polymer material layer, which is a dyeing material, is formed on a transparent substrate, patterned into a desired shape by a photolithography process, and then the obtained pattern is immersed in a dyeing bath. To obtain a colored pattern. By repeating this step three times, a colored layer composed of three colored portions of R (red), G (green), and B (blue) is formed.
In addition, the pigment dispersion method has been actively performed in recent years, and a monochromatic pattern is obtained by forming a photosensitive resin layer in which a pigment is dispersed on a substantially transparent substrate and patterning the same. By repeating this process three times, a colored layer composed of colored portions of R, G, and B is formed.

In the electrodeposition method, a transparent electrode is patterned on a transparent substrate and immersed in an electrodeposition coating solution containing a pigment, a resin, an electrolytic solution, etc., and the first color is electrodeposited. This process is repeated three times to form a colored layer composed of three colored portions of R, G, and B, and finally fired.
In the printing method, a pigment is dispersed in a thermosetting resin, printing is repeated three times, R, G, and B are separately applied, and then the resin is thermally cured to form a colored layer. .
The point common to these methods is that it is necessary to repeat the same process three times to form red, green, and blue three-color pixels, resulting in high costs. In addition, since the number of processes is large, there is a problem that the yield is likely to decrease.

  In order to overcome such problems, in recent years, a color filter manufacturing method in which partition walls (for example, a black matrix) are formed by a pigment dispersion method and RGB pixels are manufactured by an inkjet method has been studied. In this ink jet method, pixels are formed by sequentially applying a necessary amount of each of R, G, and B colors to the concave portions on the substrate partitioned by the partition walls (black matrix). Such an ink jet method has an advantage that the manufacturing process is simple and the cost is low.

  In the ink jet method, it is common to apply ink after imparting ink repellency to the partition wall by adding a fluorine component to the partition wall or treating the partition wall with fluorine plasma (for example, Patent Documents). 1 or Patent Document 2). Such an ink repellent treatment is intended to prevent the applied ink from overcoming the partition and causing color mixing.

On the other hand, in a color filter manufacturing method using a pigment dispersion method, it is known to previously provide a partition wall containing metal fine particles (see, for example, Patent Document 3).
JP-A-7-35915 JP 2001-343518 A JP 2004-347831 A

The partition walls have been formed using a mixture of organic pigments such as carbon black, red, blue, and green in order to obtain the required light shielding properties. When a color filter is manufactured by applying the method, the ink components for pixels such as RGB are slightly infiltrated into the partition wall, so that a desired pixel (colored region) cannot be obtained, and a display device or the like is configured There is a problem of causing color unevenness. This problem is particularly noticeable when the ink contains an organic solvent.
In the partition described in Patent Document 2, it is necessary to separately provide an ink repellent process for performing plasma treatment after the partition is formed. Furthermore, since the plasma treatment requires a large-scale facility, there is a disadvantage in cost.
Furthermore, the partition walls described in Patent Document 1 or Patent Document 3 are insufficient to prevent ink components from penetrating into the partition walls.
In the conventional method of applying the pixel liquid composition with a slit coater or the like, the pixel liquid composition may penetrate into the partition wall. However, in this method, since the pixel liquid composition is applied to the entire surface of the color filter, problems in display characteristics such as color unevenness hardly occur. Thus, the penetration of the ink component into the partition wall is a phenomenon that is particularly problematic in the ink jet method.

  An object of the present invention is to provide a partition wall in which penetration of an ink component is suppressed, a color filter having the partition wall, and a display device in which occurrence of color unevenness is suppressed, and the achievement of the object. Is an issue.

Specific means for solving the above problems are as follows.
<1> A partition that separates a plurality of colored regions formed on a substrate by applying droplets of the colored liquid composition, the partition including metal fine particles and an ink-repellent compound, The partition in which the volume ratio in is 0.2 volume%-13 volume%.

<2> The partition wall according to <1>, wherein the metal fine particle is a metal fine particle containing at least one metal atom belonging to any one of Groups 2 to 14 of the periodic table .
<3> The partition wall according to <1> or <2>, wherein the metal fine particle is a metal fine particle containing silver atoms.

<4> The partition wall according to any one of <1> to <3>, wherein the content of the ink repellent compound in the partition wall is 0.2% by mass to 20% by mass.

<5> The partition wall according to any one of <1> to <4>, wherein the ink repellent compound is a compound containing a fluorine atom.
<6> The partition wall according to <5>, wherein the compound containing a fluorine atom is a compound containing a perfluoroalkyl group.
<7> The partition wall according to <5> or <6>, wherein the ratio of the number of fluorine atoms to the number of carbon atoms on the wall surface (number of fluorine atoms / number of carbon atoms) is 0.10 or more.

<8> A color filter having a partition according to any one of <1> to <7> and a plurality of colored regions separated by the partition on a substrate.
<9> The colored region is a colored region formed by applying the colored liquid composition by an ink-jet method in a concave portion on a substrate partitioned by the partition wall. Color filter.

<10> A display device comprising the color filter according to <8> or <9>.

  According to the present invention, it is possible to provide a partition wall in which the penetration of ink components is suppressed, a color filter having the partition wall, and a display device in which the occurrence of color unevenness is suppressed.

≪Bulk wall≫
The partition of the present invention is a partition that separates a plurality of colored regions formed on a substrate by applying droplets of a colored liquid composition (hereinafter sometimes referred to as “ink”). The metal fine particles and at least one ink repellent compound are used, and the volume ratio of the metal fine particles in the partition walls is 0.2% by volume to 13% by volume. Thus, when ink is applied to the recesses on the substrate partitioned by the partition walls, it is possible to prevent ink components from penetrating into the partition walls.

The partition wall of the present invention contains at least one metal fine particle. By containing metal fine particles, it is possible to effectively prevent ink from penetrating into the partition walls. Further, since the metal fine particles have high light shielding properties, they are suitable for obtaining a high optical density.
In the present invention, when the volume ratio of the metal fine particles in the partition walls is less than 0.2% by volume, sufficient light shielding properties cannot be obtained. Further, when the volume ratio of the metal fine particles in the partition wall exceeds 13% by volume, the effect of preventing ink penetration cannot be sufficiently obtained. In the present invention, from the viewpoint of light shielding properties and prevention of ink penetration, the volume ratio of the metal fine particles in the partition walls is preferably 1.0% by volume to 11% by volume, and 2.0% by volume to 9.0% by volume. It is more preferable that it is 3.0 volume%-6.0 volume%.
Details of the metal fine particles will be described later.

  The volume ratio of the metal fine particles in the partition wall is obtained by, for example, taking an electron micrograph of the cross section of the partition wall, calculating the ratio of the area of the metal fine particle to the area of the partition wall in the cross-sectional photograph, and calculating the ratio value of the metal fine particle in the partition wall. It can obtain | require by setting it as a volume ratio.

The partition of this invention has at least 1 sort (s) of an ink repellent compound. Accordingly, it is possible to effectively prevent the applied ink from penetrating into the partition wall and the mixed color of the applied ink.
From the viewpoint of ink repellency by the ink repellent compound and prevention of ink penetration, the content of the ink repellent compound in the partition wall (content relative to the total solid content of the partition wall) is 0.2% by mass to 20% by mass. Preferably, it is 0.5% by mass to 10% by mass, more preferably 0.8% by mass to 6.0% by mass, and 1.0% by mass to 4.0% by mass. Is particularly preferred.
Details of the ink repellent compound will be described later.

In the present invention, from the viewpoint of ink repellency and prevention of ink penetration, the ratio of the number of fluorine atoms to the number of carbon atoms on the surface of the partition wall (number of fluorine atoms / number of carbon atoms) is preferably 0.10 or more. 0.25 or more is more preferable, and 0.4 or more is most preferable.
The ratio of the number of fluorine atoms to the number of carbon atoms can be measured using, for example, ESCA. Details of the ESCA measurement method will be described later.

Further, the surface roughness of the partition wall of the present invention is preferably 50 nm or less, more preferably 30 nm or less, further preferably 20 nm or less, and particularly preferably 10 nm or less. When the surface roughness is 50 nm or less, it is possible to more effectively prevent the occurrence of troubles such as ink color mixing.
In addition, the surface roughness in this invention can be measured as a value of Ra using the contact-type surface roughness meter P-10 (made by TENCOR), for example.

The optical density of the partition wall of the present invention is preferably 2.0 to 6.0, more preferably 3.0 to 5.0, and most preferably 3.5 to 5.0. By setting the optical density within this range, a sufficient light-shielding property can be obtained, and the latitude during development of the partition wall can be increased, so that a high-quality display performance can be obtained when a display device is constructed.
The optical density can be determined by measuring the ISO Visual transmission optical density of the partition wall. An example of a measuring instrument that can be used for measuring ISO Visual transmission optical density is X-Rite 361T (V) manufactured by Sakata Inx Engineering Co., Ltd. In addition, when a large area is required for the measurement of the optical density, it can be measured at the frame portion.

The height (film thickness) of the partition wall of the present invention is not particularly limited as long as it is within a range that can constitute a display device. From the viewpoint of color mixing prevention and optical density, the thickness is preferably 0.5 μm to 4.0 μm, and more preferably 1.5 μm to 3.0 μm.
The height of the partition wall can be measured using, for example, a contact type surface roughness meter P-10 (manufactured by TENCOR). It is also possible to take an electron micrograph of the partition wall section taken along a plane perpendicular to the substrate surface, and measure from the sectional photograph.

(Resin composition for partition walls)
The partition wall of the present invention is preferably formed from a resin composition for a partition wall. The partition wall resin composition is a partition wall resin composition including at least 1) an initiator, 2) a binder, 3) an ethylenically unsaturated compound, 4) metal fine particles, and 5) an ink repellent compound. It is preferable.

1) Initiator The resin composition for a partition in the present invention can contain at least one initiator.
The resin composition for a partition is preferably a photoinitiating composition from the viewpoint of imparting patterning properties, and is preferably a composition using a photopolymerization initiator as an initiator. The photopolymerization initiator used here generates an active species that initiates polymerization of an ethylenically unsaturated compound to be described later upon irradiation (also referred to as exposure) of radiation such as visible light, ultraviolet light, far ultraviolet light, electron beam, or X-ray. And can be appropriately selected from known photopolymerization initiators or photopolymerization initiator systems.

Preferred characteristics of the photopolymerization initiator in the present invention are as follows: 1) the initiator itself is general-purpose and inexpensive, 2) high absorbance at about 365 nm to 405 nm, 3) high absorbance at 330 nm ± 10 nm, Can be mentioned.
When the photopolymerization initiator has the above characteristics, a color filter with higher contrast can be manufactured at lower cost and with higher productivity. In particular, in the present invention using metal fine particles as a colorant, a color filter with higher contrast can be produced by using an initiator having a high absorbance of 330 nm ± 10 nm.

  Known photopolymerization initiators or photopolymerization initiator systems include, for example, trihalomethyl group-containing compounds, acridine compounds, acetophenone compounds, biimidazole compounds, triazine compounds, benzoin compounds, benzophenone compounds, α- Examples include diketone compounds, polynuclear quinone compounds, xanthone compounds, diazo compounds, and the like.

  Specifically, a trihalomethyloxazole derivative or s-triazine derivative substituted with a trihalomethyl group described in JP-A No. 2001-117230, a trihalomethyl-s-triazine compound described in US Pat. No. 4,239,850, Trihalomethyl group-containing compounds such as the trihalomethyloxadiazole compounds described in US Pat. No. 4,221,976;

9-phenylacridine, 9-pyridylacridine, 9-pyrazinylacridine, 1,2-di (9-acridinyl) ethane, 1,3-di (9-acridinyl) propane, 1,4-di (9-acridinyl) ) Butane, 1,5-di (9-acridinyl) pentane, 1,6-di (9-acridinyl) hexane, 1,7-di (9-acridinyl) heptane, 1,8-di (9-acridinyl) octane 1,9-di (9-acridinyl) nonane, 1,10-di (9-acridinyl) decane, 1,11-di (9-acridinyl) undecane, 1,12-di (9-acridinyl) dodecane, etc. Acridine compounds such as di (9-acridinyl) alkanes;

6- (p-methoxyphenyl) -2,4-bis (trichloromethyl) -s-triazine, 6- [4 ′-(N, N-bis (ethoxycarbonylmethyl) amino) phenyl] -2,4-bis (Trichloromethyl) -s-triazine, 6- [4 ′-(N, N-bis (ethoxycarbonylmethyl) amino) -3′-bromophenyl] -2,4-bis (trichloromethyl) -s-triazine, etc. Others: 9,10-dimethylbenzphenazine, Michler's ketone, benzophenone / Michler's ketone, hexaarylbiimidazole / mercaptobenzimidazole, benzyldimethyl ketal, thioxanthone / amine, 2,2'-bis (2,4-dichlorophenyl) ) -4,4 ′, 5,5′-tetraphenyl-1,2′-bi Such as imidazole, and the like.

  Among the above, at least one selected from a trihalomethyl group-containing compound, an acridine compound, an acetophenone compound, a biimidazole compound, and a triazine compound is preferable, and in particular, a trihalomethyl group-containing compound, an acridine compound, and a triazine compound It is preferable to contain at least one selected from compounds. Trihalomethyl group-containing compounds, acridine compounds and triazine compounds are also useful in that they are versatile and inexpensive.

  Particularly preferred as the trihalomethyl group-containing compound are 2-trichloromethyl-5- (p-styrylstyryl) -1,3,4-oxadiazole, 2- (p-butoxystyryl) -5-trichloromethyl. -1,3,4-oxadiazole, 9-phenylacridine as an acridine compound, and 6- [p- (N, N-bis (ethoxycarbonylmethyl) amino) as a triazine compound. Phenyl] -2,4-bis (trichloromethyl) -s-triazine, 6- [4 ′-(N, N-bis (ethoxycarbonylmethyl) amino) -3′-bromophenyl] -2,4-bis ( Trichloromethyl) -s-triazine and the like. Further, Michler's ketone, 2,2'-bis (2,4-dichlorophenyl) -4,4 ', 5,5'-tetraphenyl-1,2'-biimidazole and the like can be preferably used.

The said photoinitiator may be used individually by 1 type, and may use 2 or more types together. The total amount of the initiator (particularly the photopolymerization initiator) in the resin composition for a partition is preferably 0.1% by mass to 20% by mass, and 0.5% by mass of the total solid content (mass) of the resin composition for the partition. % To 10% by mass is particularly preferable. When the total amount is 0.1% by mass or more, the photocuring efficiency of the composition is increased and the time required for exposure is shortened. Further, by setting the content to 20% by mass or less, it is possible to suppress the loss of the formed image pattern and the occurrence of roughness on the pattern surface during development.
In the present invention, the total solid content (mass) of the partition wall resin composition means the total mass of all components of the partition wall resin composition excluding the solvent.

  The photopolymerization initiator may be configured using a hydrogen donor in combination. The hydrogen donor is preferably a mercaptan compound or an amine compound as defined below from the viewpoint that sensitivity can be further improved. The “hydrogen donor” herein refers to a compound that can donate a hydrogen atom to a radical generated from the photopolymerization initiator by exposure.

  The mercaptan-based compound is a compound having one or more, preferably 1 to 3, more preferably 1 to 2, mercapto groups directly having a benzene ring or a heterocyclic ring as a mother nucleus and directly bonded to the mother nucleus. The amine compound is a compound having a benzene ring or a heterocyclic ring as a mother nucleus and having 1 or more, preferably 1 to 3, more preferably 1 or 2 amino groups directly bonded to the mother nucleus. . These hydrogen donors may have a mercapto group and an amino group at the same time.

2) Binder The resin composition for a partition in the present invention can contain at least one binder.
The binder in the present invention is preferably a polymer having a polar group such as a carboxy group or a carboxylate group in the side chain. Examples thereof include JP-A-59-44,615, JP-B-54-34327, JP-B-58-12777, JP-B-54-25957, JP-A-59-53836, and JP-A-59-53836. A methacrylic acid copolymer, an acrylic acid copolymer, an itaconic acid copolymer, a crotonic acid copolymer, a maleic acid copolymer, a partially esterified maleic acid copolymer as described in JP-A-59-71048 A polymer etc. can be mentioned. Moreover, the cellulose derivative which has a carboxy group in a side chain can also be mentioned, In addition, what added the cyclic acid anhydride to the polymer which has a hydroxyl group can also be used preferably. Further, as particularly preferred examples, copolymers of benzyl (meth) acrylate and (meth) acrylic acid described in US Pat. No. 4,139,391, benzyl (meth) acrylate, (meth) acrylic acid and other monomers And a multi-component copolymer. The binder polymer having these polar groups may be used alone or in the state of a composition used in combination with a normal film-forming polymer, and contained in the total solid content of the partition wall resin composition. The amount is generally 20% by mass to 50% by mass, and preferably 25% by mass to 45% by mass.

3) Ethylenically unsaturated compound The resin composition for a partition in the present invention may contain at least one ethylenically unsaturated compound.
As the ethylenically unsaturated compound, for example, the following compounds may be used alone or in combination with other monomers. Specifically, t-butyl (meth) acrylate, ethylene glycol di (meth) acrylate, 2-hydroxypropyl (meth) acrylate, triethylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, 2- Ethyl-2-butyl-propanediol di (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, polyoxy Ethylated trimethylolpropane tri (meth) acrylate, tris (2- (meth) acryloyloxyethyl) isocyanurate, 1,4-diisopropenylbenzene, 1,4-dihydroxy Nzenji (meth) acrylate, decamethylene glycol di (meth) acrylate, styrene, diallyl fumarate, triallyl trimellitate, lauryl (meth) acrylate, (meth) acrylamide, xylylenebis (meth) acrylamide, and the like.

Moreover, reaction of a compound having a hydroxyl group such as 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, and polyethylene glycol mono (meth) acrylate with a diisocyanate such as hexamethylene diisocyanate, toluene diisocyanate, and xylene diisocyanate. Things can also be used.
Of these, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, dipentaerythritol pentaacrylate, and tris (2-acryloyloxyethyl) isocyanurate are particularly preferable.

  As content in the resin composition for partition walls of an ethylenically unsaturated compound, 5 mass%-80 mass% are preferable with respect to the total solid (mass) of the resin composition for partition walls, and 10 mass%-70 mass%. Is particularly preferred. When the content is 5% by mass or more, resistance to an alkaline developer at an exposed portion of the composition is improved. Moreover, by being 80 mass% or less, the raise of tackiness when it is set as the resin composition for partition walls can be suppressed, and handling property becomes more favorable.

4) Metal fine particles The resin composition for a partition in the present invention contains at least one metal fine particle.
The metal of the metal fine particles in the present invention is not particularly limited, and any metal may be used. In addition, the metal fine particles in the present invention may be metal fine particles containing one kind of metal, metal fine particles containing two or more metals, or an alloy. Good.
The metal fine particles in the present invention are preferably made of a metal or an alloy from the viewpoint that ink penetration into the partition walls can be effectively prevented. In particular, examples of the metal fine particles preferably used in the present invention include metal fine particles described in paragraph numbers [0038] to [0039] of JP-A No. 2006-251237.

  The metal fine particles preferably contain at least one metal atom belonging to any one of Groups 2 to 14 of the periodic table from the viewpoint that ink penetration into the partition wall can be effectively prevented. It is particularly preferable to contain a silver atom.

  The metal contained in the fine metal particles in the present invention is preferably at least one selected from copper, silver, gold, platinum, palladium, nickel, tin, cobalt, rhodium, iridium, and alloys thereof, and more preferably. , Copper, silver, gold, platinum, tin, and alloys thereof, and more preferably silver or an alloy containing silver.

  The number average particle diameter of the metal fine particles in the present invention is preferably 0.001 μm to 0.5 μm, more preferably 0.01 μm to 0.15 μm, from the viewpoint of sufficient light shielding properties and prevention of ink penetration into the partition walls. Preferably, it is most preferable that it is 0.01 micrometer-0.08 micrometer. In the present invention, “particle size” refers to the diameter when the particle area of the electron micrograph image of the particle is a circle of the same area, and “number average particle size” refers to the above particle size for a large number of particles. This is the average value of 100.

The metal fine particles in the present invention are preferably metal fine particles obtained by reducing metal ions in the presence of a dispersion polymer described later from the viewpoint of dispersion stability.
Specifically, a metal fine particle can be obtained by adding a solution containing a metal salt having a metal and a reducing agent in the presence of a dispersion polymer and mixing to reduce metal ions.
Any metal salt can be used as the metal salt without any particular limitation. Specific examples include metal salts such as chlorides, nitrates, nitrites, sulfates, ammonium salts, and acetates. Among these, from the viewpoint of not adsorbing to the grains in the process of forming irregular tabular grains. Nitrate, nitrite and acetate are preferred, nitrate and acetate are more preferred, and nitrate is particularly preferred.

  The reducing agent is not particularly limited as long as it is usually used. For example, borohydride metal salts such as sodium borohydride and potassium borohydride; lithium aluminum hydride, potassium aluminum hydride, cesium aluminum hydride, beryllium aluminum hydride, magnesium magnesium hydride, calcium aluminum hydride, etc. Aluminum hydride salt; sodium sulfite, hydrazine compound, dextrin, hydroquinone, hydroxylamine, citric acid and its salt, succinic acid and its salt, ascorbic acid and its salt, etc .; diethylaminoethanol, ethanolamine, propanolamine, triethanolamine, Alkanolamines such as dimethylaminopropanol; propylamine, butylamine, dipropyleneamine, ethylenediamine, triethylenepentamine Any aliphatic amine; heterocyclic amines such as piperidine, pyrrolidine, N-methylpyrrolidine, morpholine; aromatic amines such as aniline, N-methylaniline, toluidine, anisidine, phenetidine; benzylamine, xylenediamine, N -From the viewpoint of shape control of the metal fine particles, among these, it is preferable to use one or more selected from sodium sulfite, hydroquinone, ascorbic acid or a salt thereof. A combination of sodium sulfite and hydroquinone, a combination of sodium sulfite and ascorbic acid, or a combination of sodium sulfite and ascorbic acid is more preferred, and a combination of sodium sulfite and hydroquinone is more preferred. .

  The metal salt / reducing agent equivalent ratio in preparing the metal fine particles is preferably 0.2 to 5, more preferably 0.5 to 2, and 0.8 to 1.5. It is particularly preferred.

In the method for producing fine metal particles in the present invention, the addition method of metal salt and reducing agent, the reaction temperature and the like are not particularly limited, and can be appropriately adjusted according to the intended fine metal particle composition to be prepared.
From the viewpoint of controlling the shape of the metal fine particles, the temperature during the reaction is preferably 60 ° C. or lower, and more preferably 50 ° C. or lower. The addition method is not particularly limited, but it is preferable to start the addition of metal ions earlier than the reducing agent. And it is preferable to stir from a viewpoint of forming a uniform system at the time of particle | grain formation, 200 rpm or more is preferable and the rotation speed is more preferable 400 rpm or more. Although there is no restriction | limiting in particular in pH at the time of particle | grain formation, It is preferable that pH before metal salt addition is 10 or more from a viewpoint of reducing a metal salt via a hydroxide.

-Composite fine particles-
The fine metal particles in the present invention may be composite fine particles. As the composite fine particles, the composite fine particles described in paragraphs [0040] to [0043] of JP-A No. 2006-251237 and core shell type composite fine particles can also be suitably used in the present invention. Among these, composite fine particles made of metal and / or alloy are particularly preferable.

-Shape of metal fine particles-
There is no restriction | limiting in particular in the shape of the metal microparticle in this invention. Any shape such as an indeterminate shape, a spherical shape, a rugby ball shape, and a flat plate shape may be used.

-Dispersion of fine metal particles-
The metal fine particles in the present invention are preferably in a state of being dispersed in a metal fine particle dispersion described later. The presence state of the metal fine particles at the time of dispersion is not particularly limited, but the metal fine particles are preferably present in a stable dispersion state, for example, more preferably in a colloidal state.

The solvent used for dispersing the metal fine particles is not particularly limited, and among them, those having an SP value of 9.0 or more are preferable. The “SP value” is also called a solubility parameter, and is expressed by the square root of the cohesive energy density. In the present invention, the SP value means, for example, the one described on page 838 of “Adhesion Handbook” (edited by the Japan Adhesive Society, published by Nikkan Kogyo Shimbun, published in 1971, first edition).
When an SP value of 9.0 or more is used during redispersion in a solvent, the dispersibility is particularly good, and methyl ethyl ketone, 2-propanol, 1-propanol, 1-methoxy-2-propyl acetate, cyclohexanone, acetone , N-methylpyrrolidone, or a mixture thereof.
The content of the below-mentioned dispersion polymer is preferably 40% by mass or more with respect to the metal fine particles from the viewpoint of obtaining good dispersibility, and preferably 200% by mass or less, and 50 to 150% by mass from the viewpoint of obtaining necessary light shielding properties. % Is more preferable, and 70 to 120% by mass is particularly preferable.

-Metal fine particle dispersion-
The metal fine particle dispersion in the present invention is a dispersion containing at least the metal fine particles described above, and the water content is preferably 10% or less with respect to the total mass of the metal fine particles.

Furthermore, the metal fine particle dispersion in the present invention may contain a dispersion polymer having at least one sulfur atom and / or nitrogen atom as an optional component.
Hereinafter, the dispersion polymer having one or more sulfur atoms and / or nitrogen atoms will be described.

-Dispersed polymer-
The dispersion polymer in the present invention preferably has at least one sulfur atom and / or nitrogen atom.
The metal fine particle dispersion in the present invention can further improve the dispersion stability of the metal fine particles by containing a dispersion polymer.
In addition, the metal fine particle dispersion in the present invention can be made into a dispersion excellent in dispersion stability of metal fine particles by preparing metal fine particles in the presence of a dispersion polymer.

The dispersion polymer in the present invention may be a polymer containing both a sulfur atom and a nitrogen atom, or may be a polymer having either a sulfur atom or a nitrogen atom, both of which are dispersions of metal fine particles in the present invention. A stability effect can be obtained.
As the polymer having a sulfur atom, those having a thioether group, a mercapto group, a sulfide group or a thioxo group are preferable. As the polymer having a nitrogen atom, those having an amino group or an imino group or a nitrogen-containing heterocyclic compound can be used. preferable.

  Examples of the nitrogen-containing heterocyclic compound include 2-mercaptobenzimidazole, pyrrole, pyrrolidine, oxazole, thiazole, imidazole, pyrazole, pyridine, piperidine, pyridazine, pyrimidine, pyrazine, indole, quinoline, benzothiazole, and benzimidazole. These groups may be unsubstituted or substituted.

The dispersion polymer in the present invention preferably has alkali solubility from the viewpoint of forming a pattern having no defect during pattern formation.
In the present invention, “alkali solubility” means a substance that is insoluble in distilled water (H ₂ O) and can be dissolved in an alkaline aqueous solution having a pH of 10 to 13. For example, the water-soluble polymer compound is soluble in an alkaline aqueous solution, but is similarly soluble in distilled water, and is excluded from the polymer in the present invention. As a dispersion polymer, what has an acidic group is mentioned suitably, for example. There is no restriction | limiting in particular as said acidic group, According to the objective, it can select suitably. Examples of the acidic group include a carboxy group, a sulfonic acid group, a phosphoric acid group, a boronic acid group, a phenolic hydroxyl group, and a sulfonamide group. Among these, a carboxy group is preferable.

  The molecular weight of the dispersion polymer in the present invention is not particularly limited and may be appropriately selected depending on the intended purpose. From the viewpoint of the dispersion stability of the metal fine particles, for example, the weight average molecular weight is 2,000 to 300,000. Is preferable, 4,000 to 150,000 is more preferable, and 6,000 to 100,000 is particularly preferable. In the present invention, the molecular weight of the polymer is a weight average molecular weight (polystyrene standard) determined by gel permeation chromatography.

When the dispersion polymer in this invention has a sulfur atom, 0.5 mass%-20 mass% are preferable from a viewpoint of the dispersion stability of a metal microparticle, and, as for content of the sulfur atom in a polymer, 1.0 mass%- 10.0 mass% is still more preferable.
Moreover, when the dispersion polymer in this invention has a nitrogen atom, 0.5 mass%-20 mass% are preferable from a viewpoint of the dispersion stability of a metal microparticle, and the content of the nitrogen atom in a polymer is 1.0 mass. % To 10.0% by mass is more preferable.

  Specific examples of the case where the dispersion polymer in the invention contains a sulfur atom include a polymer compound having at least one repeating unit represented by the following general formula (1).

In the general formula (1), R ¹ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms in total. Examples of the alkyl group having 1 to 4 carbon atoms include a methyl group, an ethyl group, a normal propyl group, an isopropyl group, a normal butyl group, a sec butyl group, an isobutyl group, and a tert-butyl group. Groups are preferred.

In the general formula (1), R ² represents a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, an aryl group having 6 to 14 carbon atoms, or an aralkyl group having 7 to 16 carbon atoms. The group, the aryl group, and the aralkyl group may each independently be unsubstituted or substituted, and may form a saturated or unsaturated cyclic structure. Saturated or unsaturated cyclic structures include 2-mercaptobenzimidazole, pyrrole, pyrrolidine, oxazole, thiazole, imidazole, pyrazole, pyridine, piperidine, pyridazine, pyrimidine, pyrazine, indole, quinoline, benzothiazole, benzimidazole. .

In the general formula (1), Z represents —O— or —NH—. Y represents -O-, -CO-, -NR- (R is a hydrogen atom, an alkyl group or an aryl group), or a divalent linking group having 1 to 8 carbon atoms in total.
Of the divalent linking groups having 1 to 8 carbon atoms represented by Y, divalent linking groups having 1 to 6 carbon atoms are preferred, and among them, an ethylene group, a propylene group, a butylene group, a hexylene group,- CH ₂ —CH (OH) —CH ₂ — and —C ₂ H ₄ —O—C ₂ H ₄ — are particularly preferred.

  The dispersion polymer in the present invention may be a polymer compound containing not only one type of repeating unit represented by the general formula (1) but also two or more types.

  The dispersion polymer in the present invention is a method of introducing a thioether structure into a desired polymer compound (preferably as a side chain), a method of homopolymerizing a monomer having a thioether group (preferably in a side chain), or a thioether. It can be obtained by a method of copolymerizing a monomer having a group (preferably in the side chain) with another monomer. Preferably, a method of introducing a thioether structure into the side chain of the ethylenically unsaturated monomer, a method of homopolymerizing an ethylenically unsaturated monomer containing a thioether structure in the side chain, or a thioether structure is included in the side chain It can be obtained by a method of copolymerizing an ethylenically unsaturated monomer and another copolymer component.

Among the above also, from the viewpoint of excellent bond between the particles when combined with the metal particles, in particular R ¹ is a hydrogen atom or a methyl group, R ² is a methyl group, an ethyl group, n-propyl group, n-butyl group , A tert-butyl group and a phenyl group, wherein Z is —O— and Y is an ethylene group, are preferred.

  Specific examples of the case where the dispersion polymer in the present invention contains a nitrogen atom include, for example, a polymer compound having at least one repeating unit represented by the following.

As content of the said dispersion polymer in the said metal fine particle dispersion, 1-30 mass% is preferable with respect to the total solid, 3-20 mass% is more preferable, 5-15 mass% is especially preferable.
If content of the said dispersion polymer is in the said range, dispersibility can be improved more effectively and aggregation can be prevented.

  Although the specific example (exemplary compound PO-1-PO-33) of the dispersion polymer containing the sulfur atom and / or nitrogen atom in this invention is given to the following, it is not a thing limited to these. The following exemplary compounds PO-1 to PO-33 are copolymers having repeating units represented by A, B, and C. Moreover, the quantitative ratio of the repeating units A, B, and C represents the ratio of each mass%.

  In addition, a surfactant, an antiseptic, a dispersion stabilizer, or the like may be appropriately added to the metal fine particle dispersion in the present invention.

As the surfactant, any of anionic, cationic, nonionic, and betaine surfactants can be used, and anionic and nonionic surfactants are particularly preferable.
Specific examples of the surfactant include propylene glycol monostearate, propylene glycol monolaurate, diethylene glycol monostearate, sorbitan monolaurate, polyoxyethylene sorbitan monolaurate, and the like. Further, for example, surfactants described in “Surfactant Handbook” (Tokiyuki Yoshida, Shinichi Shindo, Yoshiyoshi Yamanaka, published by Engineering Book Co., Ltd. 1987) can also be used.

  As the dispersion stabilizer, for example, those described in “Pigment Dispersion Technology (issued by Technical Information Association, Inc. 1999)” can be used.

  Moreover, the resin composition for a partition in the present invention contains fine metal particles, but may contain organic pigments, inorganic pigments, dyes and the like in addition to the fine metal particles. Specifically, the pigments and dyes described in JP2005-17716A [0038] to [0054], the pigments described in JP2004-361447A [0068] to [0072], and JP2005 The colorants described in JP-A-17521 [0080] to [0088] can be preferably used. When using a pigment among the known colorants, it is preferable that the pigment is uniformly dispersed in the partition wall composition.

  When a colorant other than metal fine particles is used, the content is not particularly limited as long as the effects of the present invention are not impaired, but from the viewpoint of light shielding properties and prevention of ink penetration, the content is 50% by volume or less with respect to the metal fine particles. It is preferable to set it as content of the volume ratio of this, and it is more preferable to set it as content of the volume ratio of 10 volume% or less.

  Among the known colorants, when a pigment is used, the pigment is desirably used as a dispersion. This dispersion can be prepared by adding and dispersing a composition obtained by previously mixing the pigment and the pigment dispersant in an organic solvent (or vehicle). The vehicle refers to a portion of a medium in which a pigment is dispersed when the paint is in a liquid state, and is a liquid portion that binds to the pigment and hardens the coating film (binder), and a component that dissolves and dilutes the portion. (Organic solvent). The disperser used for dispersing the pigment is not particularly limited. For example, a kneader described in Kazuzo Asakura, “Encyclopedia of Pigments”, first edition, Asakura Shoten, 2000, page 438, Known dispersing machines such as a roll mill, an atrider, a super mill, a dissolver, a homomixer, and a sand mill can be used. Further, fine grinding may be performed using frictional force by mechanical grinding described on page 310 of the document.

  The other known colorant pigments used in the present invention are preferably those having a number average particle diameter of 0.001 μm to 0.2 μm, more preferably 0.01 μm to 0.08 μm, from the viewpoint of dispersion stability. .

5) Ink-repellent compound The resin composition for a partition in the invention contains at least one ink-repellent compound. Although there is no restriction | limiting in particular in content in the resin composition for partition walls of an ink repellent compound, It is preferable that it is content which becomes the above-mentioned preferable range when it is set as a partition.
The ink repellent compound is not particularly limited as long as it is a compound that exhibits properties of repelling ink when contained in the partition, and any compound can be used.

The ink repellent compound in the present invention is preferably a compound containing a silicon atom or a fluorine atom from the viewpoint of preventing color mixing and effectively preventing ink penetration into the partition wall, and contains a fluorine atom. A compound is more preferable, and a compound containing a perfluoroalkyl group is particularly preferable.
The carbon number of the perfluoroalkyl group is preferably 2 to 10 and more preferably 4 to 8.

Further, the ink repellent compound in the present invention is preferably a polymer compound (polymer) from the viewpoint of preventing color mixing and preventing ink from penetrating into the partition walls. Moreover, it is preferable that the said polymer is a polymer containing an alkylene oxide structure from a viewpoint of the compatibility provision to the composition for partition, As an alkylene oxide structure, ethylene oxide or propylene oxide is preferable. Furthermore, it is also preferable that the polymer is a polymer having an acidic group from the viewpoint of imparting patterning properties.
The ink repellent compound in the invention is particularly preferably a polymer containing a fluorine atom (fluorine-containing polymer) among the above polymers. Hereinafter, the fluorine-containing polymer will be described.

The fluorine-containing polymer essentially includes a monomer unit derived from the monomer (a) having an ethylenic double bond and a fluorine atom, and the monomer (b) having an ethylenic double bond and an alkylene oxide. It is preferable that the monomer unit derived from is included.
Moreover, the monomer unit derived from the monomer (c) which has an ethylenic double bond and an acidic group, or a hydroxyl group can also be included. In this case, it is preferable that the acid value of the fluoropolymer is 1 to 300 mgKOH / g.
In addition, as said ethylenic double bond, a (meth) acryloyl group, a vinyl group, an allyl group, etc. can be mentioned.

As the monomer (a) having an ethylenic double bond and a fluorine atom, for example,
CH ₂ = CR ¹ COOQ ² Rf, CH ₂ = CR ¹ OCOQ ¹ Rf, CH ₂ = CR ¹ OQ ¹ Rf, CH ₂ = CR ¹ CH ₂ OQ ¹ Rf, CH ₂ = CR ¹ COOQ ² NR ² SO ₂ Rf CH ₂ = CR ¹ COOQ ² NR ² CORf, CH ₂ = CR ¹ COOQ ² NR ² COOQ ² Rf, and CH ₂ = CR ¹ COOQ ² OQ ¹ Rf. However, Rf is selected from the group consisting perfluoroalkyl group having a carbon number of 2-10, the ^{R 1} and ^{R 2} are independently a hydrogen atom or a methyl group, ^{Q 1} is a divalent organic group of a single bond or a 1 to 6 carbon atoms And Q ² each represent a divalent organic group having 1 to 6 carbon atoms. Q ¹ and Q ² may have a cyclic structure.

As specific examples of Q ¹ and Q ² ,
_{-CH 2 -, - CH 2 CH} 2 -, - CH (CH 3) -, - CH 2 CH 2 CH 2 -, - C (CH 3) 2 -, - CH (CH 2 CH 3) -, - CH ₂ CH ₂ CH ₂ CH ₂ —, —CH (CH ₂ CH ₂ CH ₃ ) —, —CH ₂ (CH ₂ ) ₃ CH ₂ —, —CH (CH ₂ CH (CH ₃ ) ₂ ) —, —CH _{2 CH (OH) CH 2 -,} - CH 2 CH 2 NHCOOCH 2 -, and _{-CH 2 CH (OH) CH 2} OCH 2 - and the like. Q ¹ may be a single bond.
From the viewpoint of ease of _{synthesis, -CH 2 -, - CH 2} CH 2 -, or _{-CH 2 CH (OH) CH 2} - is preferred.

Specific examples of the monomer (a) having an ethylenic double bond and a fluorine atom include the following.
_{CH 2 = CHCOOCH 2 CH 2 C} n F 2n + 1 (n is _{2~8), CH 2 = CHCOOCH 2} CF 2 O (CF 2 CF 2 O) n-1 CF 3 (n is 3 to 9), CH _{2 = CHCOOCH 2 CF (CF 3} ) O (CF 2 CF (CF 3) O) n-1 C 6 F 13 (n is _{2~6), CH 2 = CHCOOCH 2} CF (CF 3) O (CF 2 CF (CF ₃ ) O) _n-1 C ₃ F ₇ (n is 2 to 6),

_{CH 2 = C (CH 3)} COOCH 2 CH 2 C n F 2n + 1 (n is _{2~8), CH 2 = C (} CH 3) COOCH 2 CH 2 NHCOOCH 2 CF 2 O (CF 2 CF 2 O) _{n-1 CF} 3 _(n is _{3~9), CH 2 = C (} CH 3) COOCH 2 CH 2 NHCOOCH 2 CF (CF 3) O (CF 2 CF (CF 3) O) n-1 C 3 F 7 (n is _{2~6), CH 2 = C (} CH 3) COOCH 2 CH 2 NHCOOCH 2 CF (CF 3) O (CF 2 CF (CF 3) O) n-1 C 6 F 13 (n is 2 6),

_{CH 2 = C (CH 3)} COOCH 2 CH (OH) CH 2 OCH 2 CF 2 O (CF 2 CF 2 O) n-1 CF 3 (n is _{3~9), CH 2 = C (} CH 3) COOCH _{2 CH (OH) CH 2 OCH} 2 CF (CF 3) O (CF 2 CF (CF 3) O) n-1 C 6 F 13 (n is _{2~6), CH 2 = C (} CH 3) COOCH 2 _{CH (OH) CH 2 OCH 2} CF (CF 3) O (CF 2 CF (CF 3) O) n-1 C 3 F 7 (n is _{2~6), CH 2 = CHCOOCH 2} CH 2 NR 1 SO 2 C _n F _{2n + 1} (n is 2 to 8, R ¹ is a hydrogen atom or a methyl group)

Among _{them, CH 2 = CHCOOCH 2 CH 2} C 6 F 13, CH 2 = C (CH 3) COOCH 2 CH 2 C 6 F 13, CH 2 = CHCOOCH 2 CH 2 C 8 F 17, CH 2 = C ( _{CH 3) COOCH 2 CH 2 C} 8 F 17, CH 2 = CHCOOCH 2 CH 2 C 4 F 9, CH 2 = C (CH 3) COOCH 2 CH 2 C 4 F 9, CH 2 = CHCOOCH 2 CH 2 NHSO 2 _{C 8 F 17, CH 2 =} CHCOOCH 2 CH 2 NCH 3 SO 2 C 8 F 17, CH 2 = CHCOOCH 2 CH 2 NHSO 2 C 6 F 13, CH 2 = CHCOOCH 2 CH 2 NCH 3 SO 2 C 6 F 13 Is particularly preferred.

  The content of the monomer unit derived from the monomer (a) having an ethylenic double bond and a fluorine atom in the fluorine-containing polymer is preferably 1% by mass to 95% by mass and the like, and 5% by mass to 80% by mass. % Is more preferable, and 20% by mass to 60% by mass is more preferable. Within such a range, the fluororesin exhibits good ink repellency and can effectively prevent ink soaking and color mixing.

Examples of the monomer (b) having an ethylenic double bond and an alkylene oxide include CH ₂ ═CR ¹ COO (Q ³ O) _p — (Q ⁴ O) _q —R ³ . Among these, from the viewpoint of ease of synthesis and compatibility with the composition, CH ₂ = CR ¹ COO (C ₃ H ₆ O) _p- (C ₂ H ₄ O) _q -R ³ , CH ₂ = CR ¹ COO ( _{C 2 H 4 O) p -} ( the _{C 3 H 6 O) q -R} 3 preferred. Here, Q ³ and Q ⁴ each independently represent a saturated hydrocarbon group having 1 to 4 carbon atoms, R ¹ represents a hydrogen atom or a methyl group, and R ³ represents a hydrogen atom or an alkyl having 1 to 5 carbon atoms. Represents a group. p and q each independently represent an integer of 0 to 20, and p and q do not represent 0 at the same time.

  The content of the monomer unit derived from the monomer (b) having an ethylenic double bond and an alkylene oxide in the fluoropolymer is preferably 1% by mass to 60% by mass, and 5% by mass to 50% by mass. Is more preferable, and 5% by mass to 30% by mass is more preferable. Within this range, the fluorine-containing polymer can impart compatibility to the composition without losing good ink repellency.

  As the monomer (c) having an ethylenic double bond and an acidic group or a hydroxyl group, for example, a monomer having a carboxy group, a monomer having a phenolic hydroxyl group, a monomer having a sulfonic acid group, And monomers having a hydroxyl group.

  Examples of the monomer having a carboxy group include acrylic acid, methacrylic acid, vinyl acetic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, cinnamic acid, and salts thereof. These may be used alone or in combination of two or more.

  Examples of the monomer having a phenolic hydroxyl group include o-hydroxystyrene, m-hydroxystyrene, and p-hydroxystyrene. In addition, one or more hydrogen atoms of these benzene rings are an alkyl group such as a methyl group, an ethyl group or an n-butyl group, an alkoxy group such as a methoxy group, an ethoxy group or an n-butoxy group, a halogen atom or an alkyl group. Examples thereof include compounds in which one or more hydrogen atoms are substituted with a halogen atom, a haloalkyl group, a nitro group, a cyano group, or an amide group. These may be used alone or in combination of two or more.

  Examples of the monomer having a sulfonic acid group include vinyl sulfonic acid, styrene sulfonic acid, (meth) allyl sulfonic acid, 2-hydroxy-3- (meth) allyloxypropane sulfonic acid, and (meth) acrylic acid-2-sulfoethyl. , (Meth) acrylic acid-2-sulfopropyl, 2-hydroxy-3- (meth) acryloxypropanesulfonic acid, 2- (meth) acrylamido-2-methylpropanesulfonic acid, or salts thereof. These may be used alone or in combination of two or more.

  Specific examples of the monomer having a hydroxyl group include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 5- Hydroxypentyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, 4-hydroxycyclohexyl (meth) acrylate, neopentyl glycol mono (meth) acrylate, 3-chloro-2-hydroxypropyl (meth) acrylate, glycerin mono ( (Meth) acrylate, 2-hydroxyethyl vinyl ether, 4-hydroxybutyl vinyl ether, cyclohexanediol monovinyl ether, 2-hydroxyethyl allyl ether, N-hydroxymethyl (meth) Acrylamide, N, N-bis (hydroxymethyl), and the like.

Furthermore, the monomer having a hydroxyl group may be a monomer having a polyoxyalkylene chain whose terminal is a hydroxyl group. For _{example, CH 2 = CHOCH 2 C 6} H 10 CH 2 O (C 2 H 4 O) g H ( wherein, g represents an integer of 1 to 100. Hereinafter the _{same), CH 2 = CHOC 4 H} 8 O ( _{C 2 H 4 O) g H} , CH 2 = CHCOOC 2 H 4 O (C 2 H 4 O) g H, CH 2 = C (CH 3) COOC 2 H 4 O (C 2 H 4 O) g H, CH ₂ = CHCOOC ₂ H ₄ O (C ₂ H ₄ O) _h (C ₃ H ₆ O) _k H (where h is 0 or an integer from 1 to 100, and k is an integer from 1 to 100) H + k is 1 to 100. The same shall apply hereinafter.), CH ₂ ═C (CH ₃ ) COOC ₂ H ₄ O (C ₂ H ₄ O) _h (C ₃ H ₆ O) _k H, and the like. These may be used individually by 1 type and may use 2 or more types together.

  The content of the monomer unit derived from the monomer (c) having an ethylenic double bond and an acidic group or hydroxyl group in the fluorine-containing polymer is preferably 0.1 to 40%, and preferably 0.5 to 30 % Is more preferable, and 1 to 20% is more preferable. Within such a range, the fluorine-containing polymer has better developability of the composition without losing good ink repellency. However, the monomer (c) having an ethylenic double bond and an acidic group or a hydroxyl group includes a monomer (a) having an ethylenic double bond and a fluorine atom, and an ethylenic double bond and an alkylene oxide. The fluorine-containing polymer may not be contained by appropriately selecting the monomer (b) having

  The fluorine-containing polymer in the present invention is derived from a monomer having no fluorine atom, alkylene oxide, acidic group and hydroxyl group (hereinafter referred to as “other monomer”) in addition to the monomer unit. It may have a monomer unit.

Other monomers include hydrocarbon olefins, vinyl ethers, isopropenyl ethers, allyl ethers, vinyl esters, allyl esters, (meth) acrylic esters, (meth) acrylamides, aromatic Examples include vinyl compounds, chloroolefins, fluoroolefins, and conjugated dienes. These compounds may contain a functional group, and examples of the functional group include a hydroxyl group, a carbonyl group, an alkoxy group, and an amide group. Moreover, you may have group which has a polysiloxane structure. However, the monomer unit derived from these other monomers does not have an Rf group, an alkylene oxide, or an acidic group. Other monomers may be used alone or in combination of two or more.
In the present invention, (meth) acrylic acid esters and (meth) acrylamides are particularly preferable from the viewpoint of heat resistance of the partition walls.

  The content of monomer units derived from other monomers in the fluorine-containing polymer is preferably 50% by mass or less, and more preferably 30% by mass or less. Within this range, the developability of the photosensitive composition for the separating wall is improved.

  The fluorine-containing polymer in the present invention can be obtained by synthesizing a copolymer containing the above various monomer units. It can also be obtained by various modification methods in which a polymer having a reactive site is reacted with a compound having a fluorine atom.

  As various modification methods for reacting a polymer having a reactive site with a compound having a fluorine atom, for example, a monomer having an epoxy group is previously copolymerized and then a compound having a fluorine atom and a carboxy group is reacted. Examples thereof include a method of reacting a compound having a fluorine atom and a hydroxy group after previously copolymerizing an epoxy group-containing monomer.

  Specific examples of the monomer having an epoxy group include glycidyl (meth) acrylate and 3,4-epoxycyclohexylmethyl acrylate.

The polymer having the reactive site that is a fluoropolymer or a precursor of the fluoropolymer is prepared by dissolving the above-mentioned monomer in a solvent together with a chain transfer agent as necessary, heating, and adding a polymerization initiator. Can be synthesized by the reaction method.
As a weight average molecular weight of a fluorine-containing polymer, 3000 or more and less than 100,000 are preferable, and 5000 or more and less than 50000 are more preferable. Within this range, ink soaking and color mixing can be effectively prevented. The weight average molecular weight can be measured by gel permeation chromatography using polystyrene as a standard substance.

As the ink repellent compound in the present invention, a silicon-containing compound can be preferably used in addition to the fluorine-containing compound.
The silicon-containing compound is preferably a polymer like the fluorine-containing compound. The structure of the silicon-containing compound is preferably a silicon-containing polymer having a silicone structure. Moreover, it is preferable that a silicon-containing polymer contains an alkylene oxide from a compatible viewpoint with the resin composition for partition walls. The weight average molecular weight of the silicon-containing polymer is preferably from 4,000 to less than 100,000, more preferably from 5,000 to less than 50,000. Within this range, ink soaking and color mixing can be effectively prevented. For example, the silicon-containing polymer is preferably a compound having the following structure.

In the structural formula, R ^{4 to} R ¹⁵ each independently represent a hydrogen atom, a methyl group, a phenyl group, or a polyalkylene oxide group. However, the case where R ⁴ and R ¹⁰ are hydrogen atoms is excluded. n, m, and l each independently represent a natural number of 3 or more.
The polyalkylene oxide group has a general formula: Q ⁵ (C ₃ H ₆ O) _p- (C ₂ H ₄ O) _q -R ¹⁶ or Q ⁵ (C ₂ H ₄ O) _p- (C ₃ H _{6 O)} a group represented by _q -R ^16. Here, R ¹⁶ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, p and q each independently represent an integer of 0 to 20, and p and q do not represent 0 at the same time. Q ⁵ is a divalent organic group having 0 to 6 carbon atoms, and in the case of 0 carbon atoms, it may be a single bond or an oxygen atom.

As content of the polyalkylene oxide group in a silicon-containing polymer, 3 mass%-60 mass% are preferable, 5 mass%-50 mass% are more preferable, 5 mass%-30 mass% are further more preferable. Within this range, the silicon-containing polymer can impart compatibility to the composition without losing good ink repellency.
In addition, it is preferable from the viewpoint of preventing ink penetration that at least one of R ^{6 to} R ⁸ and R ^{12 to} R ¹⁴ is a hydrogen atom.

  In addition to the above components 1) to 5), the following resin, surfactant, thermal polymerization inhibitor, ultraviolet absorber and the like can be added to the partition wall resin composition as necessary. Furthermore, “adhesion aid” described in JP-A-11-133600, other additives, and the like can be contained.

-Solvent-
The partition wall resin composition of the present invention may further contain at least one organic solvent in addition to the above components. Examples of the organic solvent include methyl ethyl ketone, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, cyclohexanone, cyclohexanol, methyl isobutyl ketone, ethyl lactate, methyl lactate and caprolactam.

-Surfactant-
In the resin composition for a partition wall in the present invention, it is possible to control the uniform film thickness and to contain at least one surfactant in the partition wall resin composition from the viewpoint of effectively preventing coating unevenness. preferable.
As the surfactant, for example, surfactants disclosed in JP-A-2003-337424 and JP-A-11-133600 can be mentioned as suitable ones.

-Thermal polymerization inhibitor-
The partition wall resin composition in the present invention preferably contains at least one thermal polymerization inhibitor. Examples of the thermal polymerization inhibitor include, for example, hydroquinone, hydroquinone monomethyl ether, p-methoxyphenol, di-t-butyl-p-cresol, pyrogallol, t-butylcatechol, benzoquinone, 4,4′-thiobis (3 -Methyl-6-t-butylphenol), 2,2'-methylenebis (4-methyl-6-t-butylphenol), 2-mercaptobenzimidazole, phenothiazine and the like.

-UV absorber-
The resin composition for a partition in the present invention can contain at least one ultraviolet absorber as required. Examples of the ultraviolet absorber include various compounds such as salicylate series, benzophenone series, benzotriazole series, cyanoacrylate series, nickel chelate series and hindered amine series in addition to the compounds described in JP-A-5-72724.
Specifically, phenyl salicylate, 4-t-butylphenyl salicylate, 2,4-di-t-butylphenyl-3 ′, 5′-di-t-4′-hydroxybenzoate, 4-t-butylphenyl salicylate 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octyloxybenzophenone, 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, 2- (2 '-Hydroxy-3'-t-butyl-5'-methylphenyl) -5-chlorobenzotriazole, ethyl-2-cyano-3,3-diphenyl acrylate, 2,2'-hydroxy-4-methoxybenzophenone, nickel Dibutyldithiocarbamate, bis (2,2,6,6-tetramethyl-4-piperidyl) -se Kate, 4-t-butylphenyl salicylate, phenyl salicylate, 4-hydroxy-2,2,6,6-tetramethylpiperidine condensate, succinic acid-bis (2,2,6,6-tetramethyl-4- Piperidyl) -ester, 2- [2-hydroxy-3,5-bis (α, α-dimethylbenzyl) phenyl] -2H-benzotriazole, 7-{[4-chloro-6- (diethylamino) -5-triazine -2-yl] amino} -3-phenylcoumarin and the like.

  The partition wall of the present invention preferably contains metal fine particles containing silver atoms and an ink repellent compound containing fluorine atoms, and the metal fine particles containing silver atoms are contained in an amount of 0.1% by volume in the partition walls. It is more preferable that the ink repellent compound containing 10% by volume and containing fluorine atoms is contained in an amount of 0.2% by mass to 20% by mass with respect to the total solid content of the partition walls, and the metal fine particles containing silver atoms are contained in the partition walls. 2.0% by volume to 9.0% by volume, and 0.8% by mass to 6.0% by mass of the ink repellent compound, which is a fluorine-containing polymer, with respect to the total solid content of the partition walls. Is more preferable.

The partition wall of the present invention separates a plurality of colored regions formed on a substrate with a colored liquid composition (ink) and is generally black (dark color) in many cases, but is limited to black. It is not something.
The partition wall of the present invention is preferably formed by forming a photosensitive resin layer comprising the above resin composition for a partition wall on a substrate, exposing it, and then developing it.

(substrate)
In the present invention, as the substrate (permanent support), glass, ceramic, synthetic resin film or the like can be used. Particularly preferred are transparent glass and synthetic resin film having good dimensional stability.

(Partition formation method)
As a method for forming the partition wall, for example, on at least one surface of the substrate (hereinafter, also simply referred to as “on the substrate”), the partition wall resin composition or the photosensitive resin layer made of the partition wall resin composition is used. A photosensitive resin layer forming step of forming a photosensitive resin layer using a photosensitive transfer material having: an exposure step of exposing the photosensitive resin layer; and a developing step of developing the exposed photosensitive resin layer; And a heat treatment step of heat-treating a pattern image formed of the photosensitive resin layer obtained by the development.

-Photosensitive resin layer formation process-
In the photosensitive resin layer forming step, the photosensitive resin layer is formed on at least one surface of the substrate using the above-described resin composition for a partition wall or using a photosensitive transfer material.
The method for forming the photosensitive resin layer using the partition wall resin composition is not particularly limited. For example, it can be formed by coating the partition wall resin composition by various coating methods such as slit coating, ink jet method, spin coating, cast coating, roll coating, and screen printing. As needed, you may pre-bake after application | coating.

The pre-baking can be performed, for example, at a temperature of 50 ° C. to 140 ° C. for 10 to 300 seconds using a hot plate, an oven, or the like.
The film thickness of the photosensitive resin layer can be appropriately adjusted according to the design value of the partition wall to be formed, but generally 0.5 to 5 μm is preferable, and 1.5 to 3.5 μm is more preferable.

As a method using a photosensitive transfer material, paragraph numbers [0023] and [0036] to [0051] of JP-A-2006-23696 and paragraph numbers [0096] to [0108] of JP-A-2006-47592 are disclosed. The production method described in (1) can also be suitably used in the present invention.
For example, it can be formed as follows.

On the temporary support, an oxygen blocking layer, a photosensitive resin layer formed using the above-described resin composition for a partition, and a photosensitive transfer material in which a cover sheet is further provided on the photosensitive resin layer. prepare. First, after removing and removing the cover sheet, the exposed surface of the photosensitive resin layer is bonded onto a permanent support (substrate), and is laminated by pressing with a laminator or the like (laminate). As the laminator, those appropriately selected from conventionally known laminators, vacuum laminators and the like can be used, and an auto-cut laminator can also be used in order to further increase the productivity.
Next, the photosensitive resin layer and the oxygen blocking layer can be formed in this order on the substrate by peeling between the temporary support and the oxygen blocking layer and removing the temporary support from the laminate.

-Exposure process-
In the exposure step, the photosensitive resin layer formed on the substrate is exposed to a predetermined pattern.
In this step, the pattern of the coating film is exposed through a predetermined mask pattern, and only the coating film portion irradiated with light is cured and developed with a developer to form a partition having a predetermined pattern. Can be done. As radiation that can be used for exposure, ultraviolet rays such as g-line, h-line, and i-line are particularly preferably used. Irradiation dose is more preferably preferably ^{10~200mJ / cm 2 5~300mJ / cm 2} , and most preferably 50~150mJ / cm ^2. The exposure machine can be a proximity type exposure machine, a mirror projection system or a stepper system.

  Moreover, when using a temporary support body as a protective layer which can interrupt | block oxygen, it exposes, leaving a temporary support body (without peeling). Next, the temporary support can be removed, developed using a predetermined processing solution after irradiation, and subsequently washed with water as necessary to obtain partition walls.

  Prior to the development, it is preferable to spray the pure water with a shower nozzle or the like to uniformly wet the surface of the partition wall resin composition layer or the oxygen barrier layer. As the developer used in the development process, a dilute aqueous solution of an alkaline substance is used, but it may be further added with a small amount of an organic solvent miscible with water.

  Suitable alkaline substances include alkali metal hydroxides (eg, sodium hydroxide, potassium hydroxide), alkali metal carbonates (eg, sodium carbonate, potassium carbonate), alkali metal bicarbonates (eg, sodium bicarbonate). , Potassium bicarbonate), alkali metal silicates (eg, sodium silicate, potassium silicate), alkali metal metasilicates (eg, sodium metasilicate, potassium metasilicate), triethanolamine, diethanolamine, monoethanolamine, Examples include morpholine, tetraalkylammonium hydroxides (for example, tetramethylammonium hydroxide), trisodium phosphate, and the like. The concentration of the alkaline substance is preferably 0.01 to 30% by mass, and the pH is preferably 8 to 14.

  Examples of the “water-miscible organic solvent” include, for example, methanol, ethanol, 2-propanol, 1-propanol, butanol, diacetone alcohol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol mono n-butyl ether. Benzyl alcohol, acetone, methyl ethyl ketone, cyclohexanone, ε-caprolactone, γ-butyrolactone, dimethylformamide, dimethylacetamide, hexamethylphosphoramide, ethyl lactate, methyl lactate, ε-caprolactam, N-methylpyrrolidone and the like are preferable. . The concentration of the organic solvent miscible with water is preferably 0.1 to 30% by mass. Furthermore, a known surfactant can be added, and the concentration of the surfactant is preferably 0.01 to 10% by mass.

  The developer can be used as a bath solution or a spray solution. When removing the uncured portion of the partition wall resin composition layer, methods such as rubbing with a rotating brush or a wet sponge in a developer can be combined. The liquid temperature of the developer is usually preferably from about room temperature (20 ° C.) to 40 ° C. The development time depends on the composition of the partition wall resin composition layer, the alkalinity and temperature of the developer, and the type and concentration when an organic solvent is added, but is usually about 10 seconds to 2 minutes. If it is too short, the development of the non-cured part (non-exposed part in the case of negative type) may be insufficient, and if it is too long, the cured part (exposed part in the case of negative type) may also be etched. In any case, it is difficult to make the partition shape suitable. It is also possible to put a water washing step after the development processing.

-Heat treatment process-
The partition wall of the present invention can be obtained by subjecting a pattern image (partition wall pattern) made of the photosensitive resin layer obtained by the development step to a heat treatment (also referred to as a baking treatment).
In the heat treatment, a pattern image (partition wall pattern) formed by exposure and development is heated and cured.

  As a heat treatment method, various conventionally known methods can be used. That is, for example, a method of storing a plurality of substrates in a cassette and processing them with a convection oven, a method of processing one by one with a hot plate, a method of processing with an infrared heater, and the like.

  Moreover, as baking temperature (heating temperature), it is 150-280 degreeC normally, Preferably it is 180-250 degreeC. The heating time varies depending on the baking temperature. When the baking temperature is 240 ° C., the heating time is preferably 10 to 120 minutes, and more preferably 30 to 90 minutes.

  Further, in the heat treatment step in the partition wall forming method, the partition wall pattern formed by the exposure and development steps prevents uneven film loss and precipitates components such as UV absorbers contained in the photosensitive resin layer. From the viewpoint of preventing this, post-exposure may be performed before the heat treatment.

-Post exposure-
Here, the post-exposure will be briefly described.
As the light source used for the post-exposure, any light source capable of irradiating light in a wavelength region capable of curing the photosensitive resin layer (for example, 365 nm, 405 nm) can be appropriately selected and used.
Specifically, an ultrahigh pressure mercury lamp, a high pressure mercury lamp, a metal halide lamp, etc. are mentioned.
The exposure may be an exposure to compensate for the exposure, is usually in the 50 to 5000 mJ / cm ^2, preferably not 200~2000mJ / cm ^2, more preferably a 500~1000mJ / cm ^2.

(Partition wall contact angle measurement)
In the present invention, from the viewpoint of preventing color mixing, the water contact angle on the partition wall surface after the heat treatment is preferably 75 ° to 120 °, and more preferably 90 ° to 110 °.
The contact angle measurement method here is a method compliant with the JIS standard by the Japan Standards Association, and specifically, “6. Still-drop method” in JIS R3257 “Test method for wettability of substrate glass surface”. It is the method described in the above. More specifically, using a contact angle measuring device (contact angle meter (CA-A) manufactured by Kyowa Interface Science Co., Ltd.) By bringing it into contact with the upper surface of the image, a water droplet is formed on the upper surface of the partition wall, and after standing for 10 seconds, the shape of the water droplet can be observed from the viewing hole of the contact angle meter to obtain the contact angle θ at 25 ° C.

  Here, the surface of the partition wall means an exposed surface on the opposite side of the surface of the partition wall with respect to the surface in contact with the substrate.

(Measurement of fluorine content in partition walls)
In the present invention, when a fluorine-containing compound is used as the ink repellent compound, the ratio of the number of fluorine atoms to the number of carbon atoms on the surface of the partition wall after heat treatment (from the viewpoint of preventing color mixing and preventing ink penetration into the partition wall ( (The number of fluorine atoms / the number of carbon atoms) is preferably 0.10 or more, more preferably 0.30 or more, and most preferably 0.50 or more.
The ratio of the number of fluorine atoms to the number of carbon atoms can be measured by ESCA.

≪Color filter≫
The color filter of the present invention uses a substrate having the partition walls, and applies two or more colored liquid compositions (inks) to the recesses (pixel formation regions) on the substrate partitioned by the partition walls. It is characterized by forming a colored pixel group composed of the plurality of colored regions (for example, red, green, blue, white, purple, etc.).
The method for applying the ink is not particularly limited, and a known method such as an ink jet method or a slit coat method can be appropriately used. In the present invention, it is particularly preferable to use the ink jet method.

-Inkjet system-
The ink jet system used in the present invention includes a method in which charged ink is continuously ejected and controlled by an electric field, a method in which ink is ejected intermittently using a piezoelectric element, and an ink is intermittently heated by using its foam. Various methods such as a method of injecting the ink can be employed.

  The ink used may be oily or water-based. Oiliness is preferred in that the effect of the present invention is more effectively exhibited. Further, the colorant contained in the ink can be used for both dyes and pigments, and the use of pigments is more preferable from the viewpoint of durability. Further, a colored ink (colored resin composition, for example, described in JP-A-2005-3861 [0034] to [0063]) or a colored ink described in JP-A-2004-325736, which is used for producing a known color filter. Alternatively, known inks such as the ink described in JP-A-2002-372613 and the ink described in JP-A-2003-66223 can also be used.

  Ink used in the ink jet system can be added with a component that is cured by heating or is cured by energy rays such as ultraviolet rays in consideration of a process after coloring, and these can be used in combination. Various thermosetting resins are widely used as components that are cured by heating, and epoxy group compounds can be suitably used. Moreover, as a component hardened | cured with an energy ray, what added the photoinitiator to the acrylate derivative or the methacrylate derivative can be illustrated, for example. In particular, in view of heat resistance, those having a plurality of acryloyl groups and methacryloyl groups in the molecule are more preferable.

  The color filter of the present invention is preferably a color filter in which pixels are formed by an inkjet method, and is preferably one in which at least three color filters are formed by spraying at least three RGB inks. The pattern shape of the color filter thus formed is not particularly limited, and may be a general black matrix shape such as a stripe shape, a lattice shape, or a delta arrangement. May be.

(Overcoat layer)
After the color filter is manufactured, an overcoat layer may be provided on the entire surface to improve resistance. The overcoat layer can protect the colored pixels of the inks R, G, and B and can flatten the surface, but it is preferably not provided from the viewpoint of increasing the number of steps.
Examples of the resin (OC agent) that forms the overcoat layer include an acrylic resin composition, an epoxy resin composition, and a polyimide resin composition. Above all, it is excellent in transparency in the visible light region, and the resin component of the photocurable composition for color filters usually has an acrylic resin as the main component, so that the acrylic resin composition is excellent in adhesion. Things are desirable.
Examples of the overcoat layer include those described in paragraphs 0018 to 0028 of JP-A No. 2003-287618, and commercially available overcoat agents such as “Optomer SS6699G” manufactured by JSR.

  A transparent electrode, an alignment film, and the like may be provided on the colored pixel layer as necessary. Specific examples of the transparent electrode include, for example, ITO. A specific example of the alignment film is polyimide.

≪Display device≫
The color filter obtained by the above method is used as a display element in combination with a liquid crystal display element, an electrophoretic display element, an electrochromic display element, PLZT, or the like. It can also be used for applications using color cameras and other color filters.
Examples of the display device include display devices such as a liquid crystal display device, a plasma display display device, an EL display device, and a CRT display device. For the definition of display devices and explanation of each display device, refer to “Electronic Display Devices (Akio Sasaki, published by Industrial Research Institute 1990)”, “Display Devices (Junaki Ibuki, Industrial Books Co., Ltd.) Issue)).

  Of the display devices provided with the color filter of the present invention, a liquid crystal display device is particularly preferable. The liquid crystal display device is described in, for example, “Next-generation liquid crystal display technology (edited by Tatsuo Uchida, published by Kogyo Kenkyukai 1994)”. The liquid crystal display device to which the present invention can be applied is not particularly limited, and can be applied to various types of liquid crystal display devices described in, for example, the “next generation liquid crystal display technology”. Among these, the present invention is particularly effective for a color TFT liquid crystal display device. The color TFT liquid crystal display device is described in, for example, “Color TFT liquid crystal display (issued in 1996 by Kyoritsu Publishing Co., Ltd.)”. Further, the present invention can be applied to a liquid crystal display device with a wide viewing angle such as a lateral electric field driving method such as IPS and a pixel division method such as MVA. These methods are described, for example, on page 43 of "EL, PDP, LCD display-latest technology and market trends-(issued in 2001 by Toray Research Center Research Division)".

  In addition to the color filter, the liquid crystal display device includes various members such as an electrode substrate, a polarizing film, a retardation film, a backlight, a spacer, and a viewing angle compensation film. The color filter of the present invention can be applied to a liquid crystal display device composed of these known members. For example, “'94 Liquid Crystal Display Peripheral Materials and Chemicals Market (Kentaro Shima, CMC Co., Ltd., 1994)”, “2003 Liquid Crystal Related Market Status and Future Prospects (Volume 2)” (Table Yoshiyoshi) Fuji Chimera Research Institute, published in 2003) ”.

  In addition, as a target use, it can apply without a restriction | limiting in particular to uses, such as a portable terminal, such as a television system, a personal computer, a liquid crystal projector, a game machine, a mobile phone, a digital camera, a car navigation system.

  The display device of the present invention includes ECB (Electrically Controlled Birefringence), TN (Twisted Nematic), IPS (In-Plane Switching), FLC (Ferroelectric Liquid Crystal), and OCB (OpticBandNyStic). Various display modes such as (Vertical Aligned), HAN (Hybrid Aligned Nematic), and GH (Guest Host) can be adopted.

  EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. Unless otherwise specified, “part” and “%” are based on mass, and the molecular weight of the polymer is a weight average molecular weight.

[Example 1]
-Preparation of metal fine particle dispersion A-1-
To 800 mL of pure water, the exemplified compound PO-1 (molecular weight 30000) as a dispersion polymer was added to 0.6 mass%, and 10 mL of a 1.0 mol / L calcium nitrate aqueous solution was added and stirred. Thereafter, 50 mL of 1.0 mol / L silver nitrate aqueous solution was added over 30 seconds, and then 50 mL of 1.0 mol / L sodium sulfite aqueous solution and 25 mL of 1.0 mol / L hydroquinone aqueous solution were added over 30 seconds.
Nitric acid was added dropwise to the obtained silver fine particle liquid to adjust the pH to 4, and the silver fine particles were aggregated and precipitated.
The supernatant liquid of this aggregated silver fine particle liquid was removed, 750 mL of distilled water was added to the residue, and allowed to stand for 120 minutes to remove the supernatant again. This was repeated 4 times to obtain silver fine particles.

Methyl ethyl ketone was added to the silver fine particles so that the amount of silver was 8% by mass, and 20 kHz ultrasonic waves were irradiated for 5 minutes using a “Sonifer II type” ultrasonic homogenizer manufactured by Branson.
After that, irradiation with 40 kHz ultrasonic waves was performed for 11 minutes with “Model 2000bdc-h 40: 0.8 type ultrasonic homogenizer” manufactured by Branson to obtain a metal fine particle dispersion (silver fine particle dispersion) A-1. It was.
During the ultrasonic irradiation, the liquid was cooled by COOLNICS CTW400 manufactured by Yamato Scientific Co., Ltd. so that the liquid was maintained at 25 ° C.
The water content in the silver fine particle dispersion obtained as described above was 0.3% by mass.

-Particle size measurement of silver fine particles-
The following measurements were performed on the silver fine particles contained in the metal fine particle dispersion A-1 obtained above. The metal fine particle dispersion A-1 obtained above was diluted with propylene glycol monomethyl ether acetate, and the particle diameter of the silver fine particles was measured by a mesh method. The number average particle size was 79 nm.

-Preparation of resin composition for partition walls-
The following composition was mixed to prepare a partition wall resin composition B-1.
〔composition〕
Metal fine particle dispersion A-1: 40.00 parts Propylene glycol monomethyl ether acetate 28.6 parts Methyl ethyl ketone 37.6 parts Ink-repellent compound F1 0.33 parts (trade name: EF351, Gemco Company) Manufactured, fluorine-containing polymer containing a C8 perfluoroalkyl group)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

-Formation of partition walls-
The alkali-free glass substrate was cleaned with a UV cleaning apparatus, then brush-cleaned with a cleaning agent, and further ultrasonically cleaned with ultrapure water. The substrate was heat-treated at 120 ° C. for 3 minutes to stabilize the surface state.
For the partition wall prepared as described above with a glass substrate coater (manufactured by FAS Asia Co., Ltd., trade name: MH-1600) having a slit-like nozzle after cooling the substrate and adjusting the temperature to 23 ° C. Resin composition B-1 was applied. Subsequently, a part of the solvent was dried with a VCD (vacuum dryer, manufactured by Tokyo Ohka Kogyo Co., Ltd.) for 30 seconds to eliminate the fluidity of the coating layer. The photosensitive resin layer K1 was obtained.
Subsequently, mirror projection type exposure apparatus by (MPA-8800CF, manufactured by Canon Inc.), and pattern exposure at an exposure amount 120 mJ / cm ^2.
Next, pure water is sprayed with a shower nozzle to uniformly wet the surface of the dark color photosensitive resin layer K1, and then a KOH developer (containing nonionic surfactant, trade name: CDK-1, Fuji). Film Electronics Materials Co., Ltd. diluted 100 times) was subjected to shower development at 23 ° C. for 80 seconds and a flat nozzle pressure of 0.04 MPa to obtain a patterning image. Subsequently, ultrapure water was sprayed at a pressure of 9.8 MPa with an ultra-high pressure cleaning nozzle to remove residues, and post exposure was performed from the upper surface with an exposure amount of 2500 mJ / cm ^{2 in the} atmosphere. Furthermore, it baked for 30 minutes in 230 degreeC oven, and obtained the partition (black matrix). The partition wall thickness (height) was 2.0 μm.

-Preparation of inkjet ink-
(Preparation of pigment dispersion)
In accordance with the formulation shown in Table 1 below, a pigment dispersion for G (G1) was obtained by the following method.
Brominated phthalocyanine green (CI Pigment Green 36), dispersant 1 (compound 1 below) and EFKA6745, binder 2 and 1,3-butanediol diacetate (1,3-BGDA) as solvent After premixing, using a motor mill M-50 (manufactured by Eiger Japan), zirconia beads with a diameter of 0.65 mm were used and dispersed at a peripheral speed of 9 m / s for 9 hours. A pigment dispersion (G1) was prepared.

Next, another dispersion was obtained by the following method.
In the preparation of the pigment dispersion for G (G1), the pigment dispersion for G (G1) was prepared in the same manner as in the preparation of the pigment dispersion for G (G1), except that the pigment and other components were changed to the formulation shown in Table 1. G2), R pigment dispersions (R1) and (R2), and B pigment dispersions (B1) and (B2) were prepared.

(Binder 2)
・ Benzyl methacrylate / methacrylic acid copolymer: 27%
(Molar ratio = 73/27, molecular weight 30000)
・ Propylene glycol monomethyl ether acetate 73%

An inkjet ink for G was obtained by the following method.
As shown in the following Table 2, 1,3-butanediol diacetate (1,3-BGDA; boiling point 232 ° C.), propylene glycol monomethyl ether acetate (PGMEA; boiling point 14.6 ° C.), DPHA (Nippon Kayaku ( Co., Ltd., trade name DPHA), the following surfactant 1, thermal polymerization initiator (V-40: azobis (cyclohexane-1-carbonitrile), manufactured by Wako Pure Chemical Industries, Ltd.) components are mixed, and 25 ° C. After stirring for 30 minutes, it was confirmed that there was no insoluble matter, and a monomer solution was prepared.
Next, while stirring the pigment dispersion liquid for G (G1) and the pigment dispersion liquid for G (G2), the monomer liquid is slowly added and stirred at 25 ° C. for 30 minutes. 1) was prepared.

  Next, an inkjet ink for R (ink R-1) and an inkjet ink for B (ink B-1) were prepared in the same manner as the preparation of ink G-1, except that the formulation was changed as shown in Table 2.

  Surfactant 1: Nonionic surfactant Neugen EA80 (Daiichi Kogyo Seiyaku Co., Ltd.) containing no fluorine atom

-Formation of pixel part by inkjet method-
Using the substrate on which the partition wall obtained above was formed using the inks R-1, G-1, and B-1 prepared as described above, the region (convex portion) on the substrate partitioned by the partition wall The required amount of ink was ejected into the recesses surrounded by (2) with a Dimatix ink jet head (SE-128, head temperature 25 ° C.) and dried on a hot plate at 100 ° C. for 5 minutes. Furthermore, both the partition walls and the pixels were completely cured by baking in an oven at 230 ° C. for 30 minutes, and a color filter composed of R, G, and B pixels (colored regions) separated by the partition walls was produced.

-Manufacture of liquid crystal display devices-
A transparent electrode made of ITO (Indium Tin Oxide) was further formed by sputtering on the R pixel, G pixel, B pixel and partition wall (black matrix) of the color filter substrate obtained above.
Next, according to Example 1 of Japanese Patent Application Laid-Open No. 2006-64921, a spacer was formed in a portion corresponding to the upper part of the partition wall (black matrix) on the ITO film formed as described above.
Separately, a glass substrate was prepared as a counter substrate, patterned on the transparent electrode of the color filter substrate and the counter substrate for the PVA mode, and an alignment film made of polyimide was further provided thereon.

  After that, a UV curable resin sealant is applied by a dispenser method at a position corresponding to the outer wall of the partition wall (black matrix) provided so as to surround the pixel group of the color filter, and a liquid crystal for PVA mode is dropped to face. After bonding to the substrate, the bonded substrate was irradiated with UV and heat treated to cure the sealant. Polarizing plates HLC2-2518 manufactured by Sanlitz Co., Ltd. were attached to both surfaces of the liquid crystal cell thus obtained. Next, FR1112H (chip type LED manufactured by Stanley Electric Co., Ltd.) as the red (R) LED, DG1112H (chip type LED manufactured by Stanley Electric Co., Ltd.) as the green (G) LED, and DB1112H ( A side-light type backlight was constructed using a chip-type LED manufactured by Stanley Electric Co., Ltd. and placed on the back side of the liquid crystal cell provided with the polarizing plate to produce a display device.

[Example 2]
A color filter and a display device were produced in the same manner as in Example 1 except that the method for forming the partition walls in Example 1 was changed to the following method.

-Preparation of resin composition for partition walls-
The following composition was mixed to prepare a partition wall resin composition B-2.
〔composition〕
Metal fine particle dispersion A-1: 40.00 parts Propylene glycol monomethyl ether acetate 28.6 parts Methyl ethyl ketone 37.6 parts Ink-repellent compound F2 1.0 parts (trade name: F780F, Dainippon (Inc., 30% by mass solution of fluorine-containing polymer containing a C6 perfluoroalkyl group)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

-Formation of partition walls-
(Production of photosensitive transfer material)
On a polyethylene terephthalate film (temporary support) having a thickness of 75 μm, a coating solution for a thermoplastic resin layer having the following formulation C was applied and dried using a slit nozzle. Next, an oxygen barrier layer coating solution having the following formulation P1 was applied and dried. Further, the partition wall resin composition B-2 was applied and dried. Thus, on the temporary support, a thermoplastic resin layer having a dry film thickness of 14.6 μm, an oxygen barrier layer having a dry film thickness of 1.6 μm, and a photosensitive resin layer having a dry film thickness of 2.3 μm. Was established. Finally, a protective film (12 μm thick polypropylene film) was pressure-bonded.
In this way, a photosensitive transfer material was produced in which the temporary support, the thermoplastic resin layer, the oxygen barrier layer, and the black (K) photosensitive resin layer were integrated.

<Coating liquid for thermoplastic resin layer: Formulation C>
-Methanol ... 11.1 parts-Propylene glycol monomethyl ether ... 6.36 parts-Methyl ethyl ketone ... 52.4 parts-Methyl methacrylate / 2-ethylhexyl acrylate /
Benzyl methacrylate / methacrylic acid copolymer 5.83 parts (copolymerization composition ratio (molar ratio) = 55 / 11.7 / 4.5 / 28.8,
(Molecular weight = 100,000, Tg ≒ 70 ° C)
Styrene / acrylic acid copolymer: 13.6 parts (copolymerization composition ratio (molar ratio) = 63/37, molecular weight = 10,000, Tg≈100 ° C.)
-Compound obtained by dehydration condensation of 2 equivalents of pentaethylene glycol monomethacrylate to bisphenol A 9.1 parts (BPE-500 manufactured by Shin-Nakamura Chemical Co., Ltd.)
・ Surfactant 1: 0.54 parts

<Coating liquid for oxygen barrier layer: prescription P1>
-PVA205 ... 32.2 parts (polyvinyl alcohol, manufactured by Kuraray Co., Ltd., degree of saponification = 88%, degree of polymerization 550)
・ Polyvinylpyrrolidone (manufactured by BASF, K-30): 14.9 parts ・ Distilled water: 524 parts ・ Methanol: 429 parts

(Formation of partition walls)
A glass cleaner liquid adjusted to 25 ° C. is sprayed onto an alkali-free glass substrate with a shower for 20 seconds while being washed with a rotating brush having nylon bristles. After washing with pure water, silane coupling liquid (N-β (aminoethyl) A 0.3% aqueous solution of γ-aminopropyltrimethoxysilane (trade name: KBM603, Shin-Etsu Chemical Co., Ltd.) was sprayed for 20 seconds with a shower and washed with pure water. This substrate was heated at 100 ° C. for 2 minutes by a substrate preheating apparatus.
After peeling off the protective film of the photosensitive transfer material, using a laminator (manufactured by Hitachi Industries (Lamic II type)), the substrate was heated at 100 ° C. for 2 minutes to a rubber roller temperature of 130 ° C., linear pressure of 100 N / The laminate was laminated with a transfer speed of 2.2 m / min. Subsequently, the temporary support was peeled off at the interface with the thermoplastic resin layer, and the temporary support was removed.
After peeling off the temporary support, pattern exposure was performed with an exposure amount of 90 mJ / cm ^{2 using} a mirror projection type exposure machine (MPA-8800CF, manufactured by Canon Inc.).

Next, pure water is sprayed with a shower nozzle to uniformly wet the surface of the photosensitive resin layer (with a thermoplastic resin layer and an oxygen blocking layer) on the glass substrate, and then a KOH-based developer (KOH, Nonionic surfactant-containing product name: CDK-1 (Fuji Film Electronics Materials Co., Ltd. diluted 100 times with pure water) at 23 ° C. for 80 seconds and flat nozzle pressure of 0.04 MPa for shower development Patterning images were obtained. Subsequently, ultrapure water was sprayed at a pressure of 9.8 MPa with an ultrahigh pressure washing nozzle to remove the residue, thereby obtaining a matrix-like black image. Thereafter, the substrate is further post-exposed with light of 1000 mJ / cm ² from the side on which the black image is formed with a super high pressure mercury lamp, and is further exposed to the substrate with a super high pressure mercury lamp from the side opposite to the black image. Post exposure was performed with light of 1000 mJ / cm ² , and then heat treatment was performed at 220 ° C. for 30 minutes to form partition walls.

[Example 3]
In the preparation of the metal fine particle dispersion A-1 of Example 1, the metal fine particle dispersion was performed in the same manner as in Example 1 except that the exemplified compound PO-2 (molecular weight 35000) was used instead of the exemplified compound PO-1. A-2 was prepared. The number average particle size was 45 nm.
Then, instead of the partition wall resin composition B-1 in Example 1, a partition wall, a color filter and a display device were produced in the same manner as in Example 1 except that the partition wall resin composition B-3 having the following formulation was used. did.

-Preparation of resin composition for partition walls-
The following composition was mixed to prepare a partition wall resin composition B-3.
〔composition〕
Metal fine particle dispersion A-2: 40.00 parts Propylene glycol monomethyl ether acetate 28.6 parts Methyl ethyl ketone 37.6 parts Ink-repellent compound F1 0.055 parts (trade name: EF351, Gemco Company) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

[Example 4]
In the preparation of the metal fine particle dispersion A-1 of Example 1, the same procedure as in Example 1 was performed except that an ascorbic acid aqueous solution was used instead of the hydroquinone aqueous solution and that the pH was adjusted to 7 instead of adjusting to pH 4. Thus, a metal fine particle dispersion A-3 was prepared. The number average particle diameter of the silver fine particles was 31 nm.
Subsequently, a partition wall, a color filter, and a display device were produced in the same manner as in Example 1 except that instead of the partition wall resin composition B-1 in Example 1, the partition wall resin composition B-4 having the following formulation was used. .

-Preparation of resin composition for partition walls-
The following composition was mixed to prepare a partition wall resin composition B-4.
〔composition〕
Metal fine particle dispersion A-3: 40.00 parts Propylene glycol monomethyl ether acetate 28.6 parts Methyl ethyl ketone 37.6 parts Ink-repellent compound F1 0.11 parts (trade name: EF351, Gemco Company) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

[Example 5]
In Example 1, a partition wall, a color filter, and a display device were produced in the same manner as in Example 1 except that instead of the partition wall resin composition B-1, a partition wall resin composition B-5 was used. .

<Preparation of resin composition for partition wall>
The following composition was mixed to prepare a partition wall resin composition B-5.
〔composition〕
・ Metal fine particle dispersion A-1: 40.00 parts ・ Propylene glycol monomethyl ether acetate 28.6 parts ・ Methyl ethyl ketone 37.6 parts ・ Ink-repellent compound F1 0.55 parts (trade name: EF351, Gemco) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

[Example 6]
In Example 1, a partition wall, a color filter, and a display device were produced in the same manner as in Example 1 except that instead of the partition wall resin composition B-1, a partition wall resin composition B-6 was used. .

<Preparation of resin composition for partition wall>
The following composition was mixed to prepare a partition wall resin composition B-6.
〔composition〕
Metal fine particle dispersion A-1: 40.00 parts Propylene glycol monomethyl ether acetate 28.6 parts Methyl ethyl ketone 37.6 parts Ink-repellent compound F1 1.1 parts (trade name: EF351, Gemco) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

[Example 7]
In Example 1, instead of the partition wall resin composition B-1, a partition wall resin composition B-7 having the following formulation was used, and the partition wall thickness was changed to 2.5 μm. A partition, a color filter, and a display device were produced.

<Preparation of resin composition for partition wall>
The following composition was mixed to prepare a partition wall resin composition B-7.
〔composition〕
-Metal fine particle dispersion A-1 ... 30.00 parts-Propylene glycol monomethyl ether acetate ... 28.6 parts-Methyl ethyl ketone ... 37.6 parts-Ink-repellent compound F1 ... 0.33 parts (trade name: EF351, Gemco Company) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

(Example 8)
In Example 1, a partition wall, a color filter, and a display device were produced in the same manner as in Example 1 except that instead of the partition wall resin composition B-1, a partition wall resin composition B-8 was used. .

<Preparation of resin composition for partition wall>
The following composition was mixed to prepare a partition wall resin composition B-8.
〔composition〕
-Fine metal particle dispersion A-1 ... 62.00 parts-Propylene glycol monomethyl ether acetate ... 28.6 parts-Methyl ethyl ketone ... 37.6 parts-Ink-repellent compound F1 ... 0.38 parts (trade name: EF351, Gemco Company) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

Example 9
In Example 1, the partition wall resin composition B-9 was used instead of the partition wall resin composition B-1, and the partition wall was made the same as in Example 1 except that the partition wall thickness was 3.0 μm. A color filter and a display device were produced.

<Preparation of resin composition for partition wall>
The following compositions were mixed to prepare a partition wall resin composition B-9.
〔composition〕
-Fine metal particle dispersion A-1 ... 20.00 parts-Propylene glycol monomethyl ether acetate ... 28.6 parts-Methyl ethyl ketone ... 37.6 parts-Ink-repellent compound F1 ... 0.28 parts (trade name: EF351, Gemco Company) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer (molar ratio = 73/27, molecular weight 30000) 3.8 parts dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (Japan) Manufactured by Kayaku)
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

(Example 10)
In Example 1, a partition wall, a color filter, and a display device were produced in the same manner as in Example 1 except that the partition wall resin composition B-10 having the following formulation was used instead of the partition wall resin composition B-1.

<Preparation of resin composition for partition wall>
The following compositions were mixed to prepare a partition wall resin composition B-10.
〔composition〕
Metal fine particle dispersion A-1: 40.00 parts Propylene glycol monomethyl ether acetate 28.6 parts Methyl ethyl ketone 37.6 parts Ink-repellent compound F3 0.33 parts (trade name: LD-100, Tetrafluoroethylene fine particles (manufactured by Daikin Industries)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

Example 11
In Example 1, a partition wall, a color filter, and a display device were produced in the same manner as in Example 1 except that the partition wall resin composition B-11 having the following formulation was used instead of the partition wall resin composition B-1.
<Preparation of resin composition for partition wall>
The following composition was mixed to prepare a partition wall resin composition B-11.
〔composition〕
・ Metal fine particle dispersion A-1: 40.00 parts ・ Propylene glycol monomethyl ether acetate 28.6 parts ・ Methyl ethyl ketone 37.6 parts ・ Ink-repellent compound F4 0.33 parts (trade name: CHEMINOX FA-8 , A product of Unimatec, a low molecular weight fluorine compound containing a C8 perfluoroalkyl group)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

Example 12
In Example 1, partition walls, a color filter, and a display device were produced in the same manner as in Example 1 except that the partition wall resin composition B-12 having the following formulation was used instead of the partition wall resin composition B-1.
<Preparation of resin composition for partition wall>
The following compositions were mixed to prepare a partition wall resin composition B-12.
〔composition〕
-Fine metal particle dispersion A-3 ... 40.00 parts-Propylene glycol monomethyl ether acetate ... 28.6 parts-Methyl ethyl ketone ... 37.6 parts-Ink-repellent compound S1 ... 0.33 parts (Polyether-modified silicone KF-352A Manufactured by Shin-Etsu Silicone)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

(Example 13)
In Example 1, instead of the metal fine particle dispersion A-1, the following metal fine particle dispersion A-4 was used, and instead of the partition wall resin composition B-1, a partition wall resin composition B- A partition, a color filter and a display device were produced in the same manner as in Example 1 except that 13 was used.

-Preparation of metal fine particle dispersion A-4-
10 g of a tin colloid (average particle size: 90 nm, solid content: 30% by weight, manufactured by Sumitomo Osaka Cement Co., Ltd.) was collected, and pure water was added thereto to obtain a Q solution having a total volume of 300 ml. Further, 2.0 g of silver nitrate and 33 g of sodium thiosulfate were weighed and mixed, and pure water was added thereto to obtain an aqueous solution. 10 ml of concentrated aqueous ammonia (28%) was added to this aqueous solution. Further, pure water was added to obtain an R solution having a total volume of 300 ml.
Subsequently, these Q liquid and R liquid were mixed for 10 minutes using the magnetic stirrer. Subsequently, it concentrated by centrifugation and obtained S liquid whose solid content is 15%.
The obtained metal fine particles were metal fine particles composed of silver and tin, and the number average particle diameter was 84 nm.

Subsequently, PO-1 similar to Example 1 was added to this S liquid so that it might become the mass ratio of solid component: PO-1 = 50: 50 in S liquid, and an ultrasonic disperser (Sonifier 450: BRANSON) After dispersion treatment with ULTRASONICS), the mixture was allowed to stand for 1 hour.
Further, nitric acid was added dropwise to the obtained silver tin fine particle dispersion to adjust to pH 4, and silver tin fine particles were aggregated and settled.
The supernatant liquid of the aggregated silver fine particle liquid was removed. Distilled water (750 mL) was added to the residue and allowed to stand for 120 minutes to remove the supernatant again. This was repeated 4 times.

Methyl ethyl ketone was added to the above-mentioned aggregated silver tin fine particles so that silver tin was 10% by mass, and 20 kHz ultrasonic waves were irradiated for 5 minutes using a “Sonifer II type” ultrasonic homogenizer manufactured by Branson.
After that, the Branson “Model 2000bdc-h 40: 0.8 type ultrasonic homogenizer” was irradiated with ultrasonic waves of 40 kHz for 11 minutes to obtain a metal fine particle dispersion (silver tin fine particle dispersion) A-4. Obtained.
During the ultrasonic irradiation, the liquid was cooled by COOLNICS CTW400 manufactured by Yamato Scientific Co., Ltd. so that the liquid was maintained at 25 ° C.

<Preparation of resin composition for partition wall>
The following composition was mixed to prepare a partition wall resin composition B-13.
〔composition〕
Metal fine particle dispersion A-4: 40.00 parts Propylene glycol monomethyl ether acetate 28.6 parts Methyl ethyl ketone 37.6 parts Ink-repellent compound F1 0.35 parts (trade name: EF351, Gemco) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

(Example 14)
In Example 1, partition walls, a color filter, and a display device were produced in the same manner as in Example 1 except that the partition wall resin composition B-14 having the following formulation was used instead of the partition wall resin composition B-1.

<Preparation of resin composition for partition wall>
The following compositions were mixed to prepare a partition wall resin composition B-14.
〔composition〕
-Fine metal particle dispersion A-4 ... 62.00 parts-Propylene glycol monomethyl ether acetate ... 28.6 parts-Methyl ethyl ketone ... 37.6 parts-Ink-repellent compound F1 ... 0.42 parts (trade name: EF351, Gemco Company) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

(Example 15)
In Example 1, the partition wall resin composition B-15 was used instead of the partition wall resin composition B-1, and the partition wall was made the same as in Example 1 except that the partition wall thickness was 1.8 μm. A color filter and a display device were produced.

<Preparation of resin composition for partition wall>
The following compositions were mixed to prepare partition wall resin composition B-15.
〔composition〕
-Fine metal particle dispersion A-4: 77.0 parts-Propylene glycol monomethyl ether acetate ... 28.6 parts-Methyl ethyl ketone ... 37.6 parts-Ink-repellent compound F1 ... 0.47 parts (trade name: EF351, Gemco Company) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

[Example 16]
A partition wall, a color filter, and a display device were produced in the same manner as in Example 1 except that the partition wall resin composition B-16 having the following formulation was used instead of the partition wall resin composition B-1 in Example 1.

-Preparation of resin composition for partition walls-
The following composition was mixed to prepare a partition wall resin composition B-16.
〔composition〕
Metal fine particle dispersion A-1: 40.00 parts Propylene glycol monomethyl ether acetate 28.6 parts Methyl ethyl ketone 37.6 parts Ink-repellent compound F1 0.022 parts (trade name: EF351, Gemco Company) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

[Example 17]
In Example 1, a partition wall resin composition B-17 having the following formulation was used in place of the partition wall resin composition B-1, and the partition wall thickness was changed to 3.0 μm. A color filter and a display device were produced.

-Preparation of resin composition for partition walls-
The following composition was mixed to prepare a partition wall resin composition B-16.
〔composition〕
-Fine metal particle dispersion A-1 ... 15.00 parts-Propylene glycol monomethyl ether acetate ... 28.6 parts-Methyl ethyl ketone ... 37.6 parts-Ink-repellent compound F1 ... 0.027 parts (trade name: EF351, Gemco Company) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

[Comparative Example 1]
In Example 1, a partition wall, a color filter, and a display device were produced in the same manner as in Example 1 except that the partition wall resin composition CB1 having the following formulation was used instead of the partition wall resin composition B-1.

-Preparation of resin composition for partition walls-
K pigment dispersion 1 and propylene glycol monomethyl ether acetate in the amounts shown in Table 3 below were weighed out, mixed at a temperature of 24 ° C. (± 2 ° C.), and stirred at 150 rpm for 10 minutes. Subsequently, the amounts of methyl ethyl ketone, binder 2, DPHA solution, 2,4-bis (trichloromethyl) -6- [4 '-(N, N-bis (ethoxycarbonylmethyl) amino) -3'- listed in Table 3 Bromophenyl] -s-triazine, phenothiazine, and ink repellent compound F2 are weighed and added in this order at a temperature of 25 ° C. (± 2 ° C.), and stirred at a temperature of 40 ° C. (± 2 ° C.) at 150 rpm for 30 minutes. A partition wall resin composition CB1 was prepared.

In addition, the composition of Table 3 has the following composition in detail.
<K pigment dispersion 1>
・ Carbon black (Nippex 35 manufactured by Degussa) ... 13.1%
Dispersant 1 (Compound 1 above) 0.65%
・ Polymer ... 6.72%
(Random copolymer of benzyl methacrylate / methacrylic acid = 72/28 molar ratio, molecular weight 37,000)
・ Propylene glycol monomethyl ether acetate: 79.53%

<Binder 2>
・ Polymer: 27%
(Random copolymer of benzyl methacrylate / methacrylic acid = 78/22 molar ratio, molecular weight 38,000)
・ Propylene glycol monomethyl ether acetate 73%

<DPHA solution>
・ Dipentaerythritol hexaacrylate: 76%
(Polymerization inhibitor MEHQ 500ppm, Nippon Kayaku Co., Ltd., trade name: KAYARAD DPHA)
・ Propylene glycol monomethyl ether acetate: 24%

[Comparative Example 2]
In Example 1, a partition, a color filter, and a display device were prepared in the same manner as in Example 1 except that instead of the partition wall resin composition B-1, a partition wall resin composition B-18 was used. .

<Preparation of resin composition for partition wall>
The following composition was mixed to prepare a partition wall resin composition B-18.
〔composition〕
-Metal fine particle dispersion A-1 ... 40.00 parts-Propylene glycol monomethyl ether acetate ... 28.6 parts-Methyl ethyl ketone ... 37.6 parts-Surfactant 2 ... 0.50 parts (Nonionic interface containing no fluorine atom) Activator, Neugen EA80 (Daiichi Kogyo Seiyaku Co., Ltd.))
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

[Comparative Example 3]
In Example 1, a partition wall, a color filter, and a display device were produced in the same manner as in Example 1 except that the partition wall resin composition B-19 having the following formulation was used instead of the partition wall resin composition B-1.

<Preparation of resin composition for partition wall>
The following compositions were mixed to prepare a partition wall resin composition B-19.
〔composition〕
・ Metal fine particle dispersion A-4: 112.0 parts ・ Propylene glycol monomethyl ether acetate: 28.6 parts ・ Methyl ethyl ketone: 37.6 parts ・ Ink-repellent compound F1: 0.58 parts (Product name: EF351, Gemco) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

[Comparison 4]
In Example 1, a partition wall, a color filter, and a display device were produced in the same manner as in Example 1 except that instead of the partition wall resin composition B-1, a partition wall resin composition B-20 was used. .

-Preparation of resin composition for partition walls-
The following compositions were mixed to prepare a partition wall resin composition B-20.
〔composition〕
Metal fine particle dispersion A-1 1.00 parts Propylene glycol monomethyl ether acetate 28.6 parts Methyl ethyl ketone 37.6 parts Ink-repellent compound F1 0.023 parts (trade name: EF351, Gemco Company) Made)
Hydroquinone monomethyl ether 0.001 part benzyl methacrylate / methacrylic acid copolymer 3.8 parts (molar ratio = 73/27, molecular weight 30000)
Dipentaerythritol hexaacrylate 3.6 parts (KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd.))
Bis [4- [N- [4- (4,6-bistrichloromethyl-s-triazin-2-yl) phenyl] carbamoyl] phenyl] sebacate 0.1 parts

[Evaluation]
The following evaluation was performed about the partition of the display apparatus and color filter which were obtained above. The results are shown in Table 4.

(Display device color unevenness)
Various images were displayed on the display device obtained as described above, and whether or not the images were displayed normally was visually evaluated. Evaluated according to the following criteria: A: Various images are displayed normally, and the image feels particularly powerful. A: Various images are displayed normally.
Δ: Various images are displayed normally. However, it feels that the image is not powerful x: There are difficulties such as visually seeing color unevenness or making the image look whitish.

(Evaluation of partition walls)
Next, the display device was carefully disassembled and the color filter was taken out. A small piece including a black matrix frame was cut out as a measurement sample. In order to remove ITO, the sample was immersed in a 16% HCl aqueous solution at 50 ° C. for 30 minutes, and only the ITO was rubbed off with a soft brush so as not to damage the partition walls (black matrix) and the pixel resin, and washed with water to obtain a measurement sample.

-Film thickness-
The film thickness of the partition walls was measured using a contact type surface roughness meter P-10 (manufactured by Tencor).
The mortar was moved from the black matrix frame to the glass surface outside the black matrix frame, the difference in height between the partition wall surface and the glass surface was measured, and this was taken as the film thickness.

-Optical density (OD)-
The optical density was determined by measuring the transmission optical density of the partition using a transmission densitometer X-Rite 361T (V).
The optical density of the glass surface outside the black matrix frame was OD ₀ , the optical density of the black matrix frame was OD _1, and OD ₁ -OD ₀ was calculated as the optical density (OD) of the black matrix.

(Number of fluorine atoms / number of carbon atoms)
The ratio of the number of fluorine atoms to the number of carbon atoms on the surface of the partition wall (number of fluorine atoms / number of carbon atoms) was measured using ESCA (Axis-His, manufactured by Shimadzu Corporation). C1s and F1s were measured under the setting conditions of a detection angle of 90 °, a monochrome Al gun, and an acceleration voltage of 15 kV, and F1s / C1s was calculated. This value was defined as the number of fluorine atoms / number of carbon atoms on the partition wall surface.

(Volume ratio of colorant)
The volume ratio of the colorant (metal fine particles) is determined by measuring the area of the colorant fine particle portion and the total cross-sectional area of the partition wall from the cross-sectional SEM image (30000 times) of the partition wall, It was calculated by calculating (area of colorant fine particle portion / total partition wall cross-sectional area). In addition, the arithmetic average value of arbitrary 5 images was made into the volume ratio of a coloring agent.

From Table 4, it can be seen that the display device including the color filter having the partition wall according to the present invention suppresses the occurrence of color unevenness.
Further, in Comparative Example 2, a color filter could not be formed because color mixture occurred.

Claims (10)

  A partition that separates a plurality of colored regions formed on a substrate by applying droplets of the colored liquid composition, the partition containing metal fine particles and an ink repellent compound, and a volume ratio of the metal fine particles in the partition Is a partition wall of 0.2 volume% to 13 volume%.   2. The partition wall according to claim 1, wherein the metal fine particles are metal fine particles containing at least one metal atom belonging to any one of Groups 2 to 14 of the periodic table.   The partition according to claim 1 or 2, wherein the metal fine particles are metal fine particles containing silver atoms.   Content in the partition of the said ink repellent compound is 0.2 mass%-20 mass%, The partition of any one of Claims 1-3 characterized by the above-mentioned.   The partition wall according to any one of claims 1 to 4, wherein the ink repellent compound is a compound containing a fluorine atom.   The partition wall according to claim 5, wherein the compound containing a fluorine atom is a compound containing a perfluoroalkyl group.   The partition wall according to claim 5 or 6, wherein a ratio of the number of fluorine atoms to the number of carbon atoms on the wall surface (number of fluorine atoms / number of carbon atoms) is 0.10 or more.   A color filter comprising a partition according to any one of claims 1 to 7 and a plurality of colored regions separated by the partition on a substrate.   The color filter according to claim 8, wherein the colored region is a colored region formed by applying the colored liquid composition by an inkjet method in a concave portion on a substrate partitioned by the partition wall. A display device comprising the color filter according to claim 8.