TW201312244A - Method for producing color filter, color filter, and reflection-type display device - Google Patents

Abstract

Provided are a method for producing a color filter by an inkjet method without the need for a dividing wall or matrix, as well as a color filter obtained thereby and a reflection-type display device comprising the color filter. A first ink composition comprising an ink repellent component and an ultraviolet curable component is discharged by an inkjet method and cured by irradiation with ultraviolet light, thereby providing a predetermined gap region formed of a first coloring coating on a support substrate; a second ink composition comprising an ultraviolet curable component and having a static contact angle ?k of 35 DEG or higher with respect to at least the first coloring coating is discharged by an inkjet method onto the gap region and cured by irradiation with ultraviolet light to form a second coloring coating, whereby a plurality of coloring regions comprising the coloring coatings are formed on a support substrate without there being a dividing wall or matrix interposed therebetween, thus obtaining the color filter.

Description

Color filter manufacturing method, color filter and reflective display device

The present invention relates to a method for producing a color filter, a color filter, and a reflective display device, and more particularly to a method for manufacturing a color filter suitable for color display of a reflective display device, and the color obtained thereby A filter and a reflective display device having the color filter.

It is prevalent to develop display devices such as electronic paper to replace paper electronic media. For a CRT or a liquid crystal display of a conventional display, an electronic paper or the like mainly uses a reflective display method using a display medium formed of white particles or black particles, and must have a high white reflectance or a high contrast. In addition, it is intended to have a memory effect on the displayed image, or can be driven at a low voltage, and is thin, light, and inexpensive. In particular, it requires a white reflectivity that is homogenous to paper. Contrast is a display characteristic, and since a conventional paper medium (printing or the like) is of course a full-color display, the coloring of a display device such as an electronic paper is extremely demanding.

The technology of electronic paper that can be color-displayed up to now, for example, a medium in which a color filter is formed in a reflective liquid crystal element has been manufactured, but since a polarizing plate is used, light utilization efficiency is low, and only darkness can be performed. White display. In addition, since the black color cannot be displayed, the contrast ratio is also poor.

Further, it is known that an electrophoretic mode in which a charged white particle and a black particle are moved by an electric field without using a polarizing plate is used as a bright reflective display device. Generally speaking, by means of the electric movement The scattering reflectance is as low as 40%, and it is now required to improve the reflection efficiency. In particular, when color display is performed, the utilization efficiency of light is lowered by absorption in the color layer, and thus the expectation for developing bright color electronic paper is extremely large.

For example, in the reflective display device that can be arbitrarily switched to a white state and a black state by a particle that is charged by application of a voltage, a color filter can be provided and color can be set. Display technology. Here, the color filters referred to herein are conventional color filters used in liquid crystal display devices, etc., because of the black matrix having the light shielding portion or the partition wall forming the designated pixel region, there is a dispersion of charged particles. A problem that causes a loss of brightness due to chaotic reflections.

Further, Patent Document 4 discloses that a color filter having no black matrix is used in a reflective display device. Here, in Patent Document 4, a photoresist of a predetermined color is applied to a support substrate on which a color filter is formed, and after drying, pattern exposure is performed using an exposure machine, and development is performed by an alkali developer to form a colored region. And repeating these colors to produce a color filter, that is, using lithography, there are problems in that the number of engineering is complicated and unfavorable for cost, and at the same time, the use of the photoresist is wasteful.

Here, as a method of producing a color filter using a known inkjet method, such as a liquid crystal display device, for example, as shown in Patent Documents 5, 6 and 7, an ink composition of red, blue, and green is applied to a region constituting a pixel. And hardened to form a colored coating film. In this case, in order to form the colored coating film with good precision and the like, the partition wall or the like is provided in advance by lithography, whereby the ink composition of each color is simultaneously applied to the formed region, and the aforementioned lithography Compared with surgery At the time, the cost can be reduced without the problem of wasting the ink composition.

Next, in Patent Document 8, a method of forming a colored coating film in a plurality of colored regions without providing a bank (partition) is proposed, but the technique is to form a black matrix on the supporting substrate instead of touching. In the row, the ink composition is applied in this region and subjected to separation coating.

[Practical Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2003-161964

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2004-361514

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2008-83536

[Patent Document 4] Japanese Patent Laid-Open Publication No. 2006-267831

[Patent Document 5] Japanese Laid-Open Patent Publication No. 59-75205

[Patent Document 6] Japanese Patent Laid-Open Publication No. 2001-350012

[Patent Document 7] Japanese Patent Laid-Open No. Hei 11-281815

[Patent Document 8] Japanese Patent Laid-Open Publication No. 2010-54777

The present invention has been made in view of the above-described conventional techniques to provide a method for producing a color filter by an inkjet method without providing a necessary partition or substrate. Thereby, for example, the reflective display device for monochrome display does not reduce the brightness, and color display can be performed simply and at low cost.

In order to solve the above problems, the present inventors have conducted intensive investigations and found that the ultraviolet curing type containing the ink-repellent component is used. Forming a first colored coating film on the support substrate by providing a predetermined gap region on the support substrate, and then discharging the ultraviolet curable second ink composition to the gap region to form a second colored coating film. A plurality of colored regions are provided on the support substrate adjacent to the colored coating film without passing through the partition walls or the substrate. Thereby, the problem of the decrease in brightness due to the partition walls or the substrate can be solved, and the problem of color mixing due to the overlapping of the colored coating films can be prevented, and the present invention can be completed.

In other words, the method for producing a color filter according to the present invention is a method for producing a color filter comprising a plurality of colored regions on a support substrate, characterized in that the first ink composition containing the ink-repellent component and the ultraviolet-curable component is provided. Discharged by an inkjet method and cured by irradiation with ultraviolet rays, and a predetermined gap region formed by the first colored coating film is provided on the support substrate, and the gap region is relative to at least the first colored coating film. The static contact angle θ _k is 35° or more, and the second ink composition containing the ultraviolet curable component is discharged by an inkjet method, and is cured by irradiation with ultraviolet rays to form a second colored coating film without passing through the partition wall and the substrate. A plurality of colored regions formed by the colored coating film are formed on the support substrate.

Further, the present invention is obtained by the above method, and a color filter formed by an inkjet method without a partition wall and a substrate. Further, the present invention is a reflective display device including the color filter.

The first ink composition used in the present invention contains at least an ink repellent component and an ultraviolet curable component, and the second ink composition contains at least an ultraviolet curable component. Among them, the ink-repellent component which is necessary in the first ink composition can be, for example, a fluorine-based compound which is soluble in the ultraviolet-curing component. As the fluorine-based compound, a (meth) acrylate unit or an α-chloro acrylate unit which is represented by the following general formula (1) as a fluorine-containing unit, that is, a perfluoroalkyl group R ^f having 4 to 6 carbon atoms can be used. A copolymer of a conventional (meth) acrylate unit as a main component. Further, a (meth) acrylate which is copolymerized with a fluorine-containing unit can be used by a conventional one.

CH ₂ =C(R ¹ )COOXR ^f (1) (wherein R ¹ represents a hydrogen atom, a methyl group, a trifluoromethyl group, or a Cl, and the X system represents a divalent organic compound having a carbon number of 1 to 6; Base, R ^f represents a perfluoroalkyl group having 4 to 6 carbon atoms)

Examples of the monomer represented by the above formula (1), such as CH ₂ =CH(R ¹ )COOR ² R ^f , CH ₂ =CH(R ¹ )COOR ² NR ³ SO ₂ R ^f , CH ₂ =CH(R ¹ ) COOR ² NR ³ COR ^f , CH ₂ =CH(R ¹ )COOCH ₂ CH(OH)R ⁴ R ^f or the like. Here, R ² represents an alkylene group having 1 to 6 carbon atoms, R ³ represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R ⁴ represents a single bond or an alkylene group having 1 to 4 carbon atoms. Wherein R ² is specifically, for example, -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 )-etc. Further, specific examples of R ³ include -CH ₃ , -CH ₂ CH ₃ , -CH ₂ CH ₂ CH ₃ , -CH ₂ CH ₂ CH ₂ CH ₃ and the like. Further, specific examples of R ^{4 are} , for example, -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 )-, and the like. In terms of easy availability, X of the above formula (1) is preferably an alkylene group having 2 to 4 carbon atoms. The monomers represented by the above formula (1) may be used singly or in combination of two or more kinds. By R ^f being a linear or branched perfluoroalkyl group having 4 to 6 carbon atoms, or [(CF ₃ ) ₂ CF] ₂ C=C(CF ₃ )- or (CF ₃ ) ₂ C=C (CF ₂ CF ₃ )-, the fluorine-based compound has good compatibility with other components than the first ink composition, and when the first ink composition is applied to form a coating film, fluorine-based compounds do not condense with each other. The situation.

The content of the ink-repellent component in the first ink composition is preferably 0.01 mass% to 2 mass% based on 100 parts by mass of the solid component in the ink. When it exceeds 2 parts by mass, it may cause contamination of the ink jet nozzle or contamination of the supporting substrate, and there is a problem that the ink is formed. On the other hand, when it is less than 0.01 part by mass, there is a fear that the surface of the first colored coating film obtained after the ultraviolet irradiation is insufficient in ink repellency, and there is a case where a remarkable colored coating film overlaps, in particular, there is a first colored coating film. In other words, it is difficult to make the static contact angle θ _k of the second ink composition 35° or more.

Further, as the ultraviolet curable component contained in the first ink composition and the second ink composition, a polyfunctional monomer can be used, and for example, a liquid polyfunctional acrylic monomer is preferable. More preferably, it is a low-viscosity bifunctional or trifunctional polyfunctional acrylic monomer which is easy to eject at the time of ink jet ejection. The functional group is, for example, an acryloxy group, a methacryloxy group or the like, and of course, other than these. Specific examples of the ultraviolet curable component, such as 1,6-hexanediol diacrylate, 1,9-nonanediol diacrylate, 1,4-butanediol diacrylate, ethylene glycol dimethacrylate, Neopentyl alcohol diacrylate, trimethylolpropane triacrylate, 1,3-butylene glycol dimethacrylate, and the like. Further, in addition to these, in order to further improve photocurability, a tetrafunctional or higher polyfunctional acrylic monomer or oligomer may be added. For example, a trifunctional or tetrafunctional acrylate or methacrylate having pentaerythritol as a skeleton, or a bifunctional or hexafunctional acrylate or methacrylate having a dipentaerythritol as a skeleton. And, UV hard The chemical composition may be different from those contained in the first ink composition or the second ink composition, and it is preferable to use the same one to form a uniform colored coating film on the support substrate.

In the first and second ink compositions, for the purpose of film formation, an adhesive is also added in the viscosity range of the ink jet discharge. As the adhesive, a resin which does not have polymerization reactivity itself, or a resin which has polymerization reactivity itself, or a combination of two or more types of adhesives can be used.

Further, in the first and second ink compositions, a predetermined coloring agent may be blended in such a manner as to match the desired color in the form of red (R), green (G), blue (B), or the like. However, since the color filter used in the reflective display device such as electronic paper also contains a colored region which is colorless and transparent or does not need to be adjusted in color, it is of course possible to form a colored coating film without blending a coloring agent.

When a coloring agent is blended, any one selected from the group consisting of an organic coloring agent and an inorganic coloring agent can be used. As the organic colorant, for example, a dye, an organic pigment, a natural pigment, or the like can be used. Further, as the inorganic colorant, for example, an inorganic pigment, an extender pigment or the like can be used. Among these, in terms of high color developability and high heat resistance, it is preferred to use an organic pigment. The organic pigment is classified into a compound of a pigment, for example, in a color index (C.I.; issued by The Society of Dyers and Colourists), and specifically, for example, a color (C.I.) number attached below.

In other words, for example, C.I. Pigment Yellow 1, C.I. Pigment Yellow 3, C.I. Pigment Yellow 12, C.I. Pigment Yellow 13, C.I. Pigment Yellow 14, C.I. Pigment Yellow 15, CIPigment Yellow 16, CIPigment Yellow 17, CIPigment Yellow 20, CIPigment Yellow 24, CIPigment Yellow 31, CIPigment Yellow 55, CIPigment Yellow 60, CIPigment Yellow 61, CIPigment Yellow 65, CIPigment Yellow 71, CIPigment Yellow 73, CIPigment Yellow 74, CIPigment Yellow 81, CIPigment Yellow 83, CIPigment Yellow 93, CIPigment Yellow 95, CIPigment Yellow 97, CIPigment Yellow 98, CIPigment Yellow 100, CIPigment Yellow 101, CIPigment Yellow 104, CIPigment Yellow 106, CIPigment Yellow 109, CIPigment Yellow 109, CIPigment Yellow 110, CIPigment Yellow 113, CIPigment Yellow 114, CIPigment Yellow 116, CIPigment Yellow 117, CIPigment Yellow 119, CIPigment Yellow 120, CIPigment Yellow 126, CIPigment Yellow 127, CIPigment Yellow 128, CIPigment Yellow 129, CIPigment Yellow 138, CIPigment Yellow 139, CIPigment Yellow 150, CIPigment Yellow 151, CIPigment Yellow 152, CIPigment Yellow 153, C.I. Pigment Yellow 154, C.I. Pigment Yellow 155, C.I. Pigment Yellow 156, C.I. Pigment Yellow 166, C.I. Pigment Yellow 168, C.I. Pigment Yellow 175; CIPigment Orange 1, CIPigment Orange 5, CIPigment Orange 13, CIPigment Orange 14, CIPigment Orange 16, CIPigment Orange 17, CIPigment Orange 24, CIPigment Orange 34, CIPigment Orange 36, CIPigment Orange 38, CIPigment Orange 40, CIPigment Orange 43, CIPigment Orange 46, CIPigment Orange 49, CIPigment Orange 51, CIPigment Orange 61, CIPigment Orange 63, CIPigment Orange 64, CIPigment Orange 71, CIPigment Orange 73; CIPigment Violet 1, CIPigment Violet 19, CIPigment Violet 23, CIPigment Violet 29, CIPigment Violet 32, CIPigment Violet 36, CIPigment Violet 38; CIPigment Red 1, CIPigment Red 2, CIPigment Red 3. CIPigment Red 4, CIPigment Red 5, CIPigment Red 6, CIPigment Red 7, CIPigment Red 8, CIPigment Red 9, CIPigment Red 10, CIPigment Red 11, CIPigment Red 12, CIPigment Red 14, CIPigment Red 15, CIPigment Red 16, CIPigment Red 17, CIPigment Red 18, CIPig Ment Red 19, CIPigment Red 21, CIPigment Red 22, CIPigment Red 23, CIPigment Red 30, CIPigment Red 31, CIPigment Red 32, CIPigment Red 37, CIPigment Red 38, CIPigment Red 40, CI Pigment Red 41, CIPigment Red 42, CIPigment Red 48:1, CIPigment Red 48:2, CIPigment Red 48:43, CIPigment Red 48:4, CIPigment Red 49:1, CIPigment Red 49:2, CIPigment Red 50:1, CIPigment Red 52:1, CIPigment Red 53:1, CIPigment Red 57, CIPigment Red 57:1, CIPigment Red 57:2, CIPigment Red 58:2, CIPigment Red 58:4 CIPigment Red 60:1, CIPigment Red 63:1, CIPigment Red 63:2, CIPigment Red 64:1, CIPigment Red 81:1, CIPigment Red 83, CIPigment Red 88, CIPigment Red 90 : 1, CIPigment Red 97, CIPigment Red 101, CIPigment Red 102, CIPigment Red 104, CIPigment Red 105, CIPigment Red 106, CIPigment Red 108, CIPigment Red 112, CIPigment Red 113, CIPigment Red 114, CIPigment Red 122, CIPigment Red 123, CIPigment Red 144, CIPigment Red 146, CIPigment Red 149, CIPigment Red 150, CIPigment Red 151, CIPigment Red 166, CIPigment Red 168, CIPigment Red 170, C .I.Pigment Red 171, CIPigment Red 172, CIPigment Red 174, CIPigment Red 175, CIPigment Red 176, CIPigment Red 177, CIPigment Red 178, CIPigment Red 179, CIPigment Red 180, CIPigment Red 185, CIPigment Red 187, CIPigment Red 188, CIPigment Red 190, CIPigment Red 193, CIPigment Red 194, CIPigment Red 202, CIPigment Red 206, CIPigment Red 207, CIPigment Red 208, CIPigment Red 209, CIPigment Red 215, CIPigment Red 216, CIPigment Red 220, CIPigment Red 224, CIPigment Red 226, CIPigment Red 242, CIPigment Red 243, CIPigment Red 245, CIPigment Red 254, CIPigment Red 255, CIPigment Red 264, CIPigment Red 265; CIPigment Blue 15, CIPigment Blue 15:3, CIPigment Blue 15:4, CIPigment Blue 15:6, CIPigment Blue 60; CIPigment Green 7, CIPigment Green 36; CIPigment Brown 23, CIPigment Brown 25; CIPigment Black 1, CIPigment Black 7, and the like.

In addition, specific examples of inorganic pigments or extender pigments, such as titanium oxide, barium sulfate, calcium carbonate, zinc white, lead sulfate, yellow lead, zinc yellow, iron red (red iron oxide (III)), cadmium red, ultramarine blue, dark blue , chrome oxide green, cobalt green, amber, titanium black, synthetic iron black, carbon black and so on. Further, the coloring agents to be blended in the first and second ink compositions may be used singly or in combination of two or more.

When a nozzle clogging or the like is considered when the ink composition is ejected by an inkjet method, a preferred color former is micronized in a polymer dispersant and particles of 100 nm or less. Decentralized stability is appropriate. In other words, when the dispersion is such that the colorant is well dispersed, it can be blended in the ink composition as needed. For example, a surfactant such as a cationic system, an anionic system, a nonionic system, an amphoteric group, a polyfluorinated system or a fluorine-based surfactant can be used. In the surfactant, the following The polymer surfactant (polymer dispersant) exemplified is preferred. In other words, there are polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyethylene oxide oleyl ether, polyoxyethylenes such as polyoxyethylene octyl phenyl ether and polyoxyethylene decyl phenyl ether. Alkyl phenyl ethers; polyethylene glycol diesters such as polyethylene glycol dilaurate, polyethylene glycol distearate; sorbitol fatty acid esters; fatty acid modified polyesters; A polymer surfactant such as an amine modified polyurethane.

When the content of the first and second ink compositions and the coloring agent is matched, the coloring agent is usually blended in a ratio of 1 to 60% by mass, preferably 5 to 40% by mass, based on the total amount of the solid component in the ink. . When the blending ratio of the colorant is less than 1% by mass based on the total amount of the solid content in the ink, there is a fear that the ink concentration of the ink composition (generally about 0.1 to 2.0 μm) is not applied at a predetermined film thickness. Sufficient situation. On the other hand, when the ink composition is applied to a support substrate and cured at a temperature of more than 60% by mass, the adhesion of the colored coating film may be poor to the support substrate, and the coating film may be used as a coating film. A case where the coating properties such as hardness are insufficient.

Further, a photopolymerization initiator may be blended in the first and second ink compositions. The photopolymerization initiator is appropriately selected in consideration of the kind of each material (for example, radical polymerization or cationic polymerization, etc.), for example, 1-hydroxycyclohexyl-benzophenone, 2, in addition to the reaction form of the adhesive or the polyfunctional monomer (for example, radical polymerization or cationic polymerization). 2-dimethoxy-1,2-diphenylethane-1-one, 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinylpropan-1-one , 2-Benzyl-2-dimethylamino-1-(4-morpholinylphenyl)-butan-1-one, 2-hydroxy-2-methyl-1-phenyl-propane- 1-ketone, 1-[4-(2-hydroxyethoxy)phenyl]-2-hydroxy-2-methyl-1-propan-1-one , 2,4,6-trimethylbenzimidyldiphenyl-phosphine oxide, bis-indenylphosphine oxide, benzoin ether, benzoin isobutyl ether, benzoin isopropyl ether, 2-isopropyl Thiophenone, 2,4-diethylthioxanthone, 2-(3-dimethylamino-2-hydroxypropoxy)-3,4-dimethyl-9H-thioxanthone-9 - ketone chloride, benzophenone, methyl o-benzoyl benzoate, 4-benzylidene-4'-methyl-diphenyl sulfide, 3,3', 4,4' -tetrakis (3-butylperoxycarbonyl), p-dimethylaminobenzoic acid ethyl ester, p-dimethylaminobenzoic acid isoamyl ester, 1,3,5-tripropylenesulfonylhexahydro -s-triazine, 2-[2-(5-methylfuran-2-yl)vinyl]-4,6-bis(trichloromethyl)-s-triazine, 2-[2-(furan) -2-yl)vinyl]-4,6-bis(trichloromethyl)-s-triazine, methyl benzhydrylcarboxylate, 2,4,6-trimethylbenzylidene A photopolymerization initiator such as phenylphosphine oxide.

Further, a solvent may be blended in the first and second ink compositions. a solvent such as ethylene glycol monoalkyl ether acetate such as ethylene glycol monomethyl ether acetate; diethylene glycol monoalkyl ether such as diethylene glycol monomethyl ether or diethylene glycol monoethyl ether; Diethylene glycol monoalkyl ether acetate such as diol mono-n-butyl ether acetate; propylene glycol monoalkyl ether acetate such as propylene glycol monomethyl ether acetate or propylene glycol monoethyl ether acetate; diethylene glycol Other ethers such as dimethyl ether, high-boiling solvents such as γ-butyrolactone, and the like.

In order to obtain the first and second ink compositions, the above-mentioned basic components are mixed, and the surface tension adjusting agent or the reactive diluent for the purpose of low viscosity is prepared to be suitable for continuous discharge. The characteristic value of the characteristic is used as an ink for inkjet. A commonly used ink jet head is made of a piezoelectric element. Therefore, the viscosity is 5~30mPa when the head temperature is 20~45°C. In the sec mode, the surface tension is preferably 20 to 40 N/m. Further, the second ink composition must have a static contact angle θ _k of 35° or more, preferably 40° or more, with respect to the first colored coating film formed of the first ink composition, and the first ink composition It is achieved by containing an ink-repellent component in a ratio of 0.01 mass% to 2 mass% with respect to 100 parts by mass of the solid component in the ink.

Further, the support substrate used in the production of the color filter may be any one that is transparent to light, and is not particularly limited. For example, acrylic acid, PET, PC, polyolefin, etc., which can be used for electronic paper, etc., have a transmittance of 90%. More than 100% of the transparent plastic sheet or film is better than the glass used by the liquid crystal display device or the like.

In order to produce a color filter having a uniform colored coating film on the surface, the support substrate may be surface-treated in advance to adjust the contact angle of the first and second ink compositions to the surface of the support substrate. Since the ink composition discharged from the support substrate by the inkjet method is in a liquid state, the degree of wet diffusion differs depending on the surface tension and the surface tension of the support substrate. Therefore, it is preferred to subject the support substrate to surface treatment as needed. In particular, in the first ink composition, the contact angle θ _L of the first ink composition is preferably 3° or more with respect to the support substrate. When the contact angle is lower than this value, since the droplets of the ink composition on the supporting substrate become too wet and diffuse, it may be impossible to control the formation of the specified colored coating film. When the colored coating film is formed into a linear shape, the upper limit of the contact angle θ _L is preferably 25°. When the contact angle θ _L exceeds 25°, for example, when the droplets of the ink composition discharged from the nozzle are drawn in a straight line in a straight line, the droplets may be absorbed after the droplets are first dropped on the substrate. As a result, the droplets are concentrated at a specific place, that is, a wet diffusion condition in which droplets called bulges are uneven. When the colored coating film of the lattice pattern is formed, the upper limit of the contact angle θ _L is preferably 45°. When the upper limit is exceeded, there is a fear that the colored area is unstable. Further, the contact angle θ _{L of the} second ink composition with respect to the supporting substrate is not limited in terms of the gap in which the first ink composition is buried in the hardened coating film. When the wet diffusion is emphasized, the contact angle θ _L is preferably 25 or less.

The surface treatment method of the support substrate can be determined depending on the kind of the support substrate and using appropriate conventional means. For example, in addition to the atmospheric piezoelectric slurry method, corona discharge, and ultraviolet treatment, a fluorine-based ink repellent agent or a treatment using a decane coupling agent may be applied in advance.

When the ink composition discharged from the support substrate is cured to form a colored coating film, depending on the ink sensitivity, the first ink composition is discharged onto the support substrate, and a predetermined gap region is formed to form a first In the case of a colored coating film, and discharging the second ink composition in the gap region, when the second colored coating film is formed adjacent to the first colored coating film, the ultraviolet irradiation amount is preferably about 200 mJ/cm ² or more. It is preferably 500 mJ/cm ² or more. In the ultraviolet irradiation, for example, an inkjet device having a mesa surface on which a support substrate is placed can be used to discharge the first and second ink compositions on the same surface and to irradiate the ultraviolet rays, and it is not necessary to pass the support group between the steps. Material, can effectively manufacture color filters.

Further, when the gap region formed by the first colored coating film is formed, the first ink composition is discharged and cured by irradiation with ultraviolet rays, and then the first ink composition is discharged adjacent to the obtained first colored coating film, and then the ultraviolet ray is irradiated. The hardening may be carried out in a plurality of cycles in which the discharge of the first ink composition and the curing by ultraviolet irradiation are performed.

Further, after the first and second colored coating films are formed on the support substrate, sufficient ultraviolet rays may be irradiated. The ultraviolet irradiation amount at this time is preferably 1000 mJ/cm ² or more, but since the degree of hardening is related to the kind of the ink composition or the exposure machine illuminance/output force wavelength, generally, the correlation between the residual volume ratio of the exposure amount is reduced. The exposure is preferably above. Further, in addition to ultraviolet curing, heat treatment at about 80 ° C to 160 ° C can be performed to further improve durability as a color filter.

[Effect of the invention]

According to the present invention, the first ink composition can be formed by forming a first gap coating film on the support substrate by setting a predetermined gap region, and then discharging the second ink composition to the gap region, and forming the first ink composition. In the method of coloring the coating film, by forming the coloring coating film formed by the ink composition in plural times, it is not necessary to form a black matrix or a partition wall by lithography as in a conventional method, and color is produced by an inkjet method. Filter. Therefore, the problem of reducing the brightness due to the partition or the substrate, or the color mixing problem caused by the overlapping of the colored coating film can be solved, and the obtained color filter can be used for a panel of a black substrate which does not require the shielding of the TFT element (for example, The reflective display device is colored to provide a color display device excellent in brightness and color purity. Further, the method of the present invention means that, in addition to these, it is also suitable for a method of producing various types of color filters of any size.

[In order to implement the invention]

In the following, the color filter of the present invention will be described in more detail using the drawings. Manufacturing method. Further, the following is an example of a manufacturing sequence, and there is no particular limitation on the color of the ink composition to be used or the color order of the coloring of the supporting substrate.

[Production Example 1 of Strip Color Filter]

Fig. 3 is a view showing a manufacturing procedure of a strip-shaped color filter having a colored region of a stripe pattern in which three linear colored coating films of red (R), green (G), and blue (B) are arranged in parallel. First, as shown in Fig. 3(A), a first ink composition colored in red is blended with a coloring agent containing an ink-repellent component and an ultraviolet-curing component, and is discharged from a nozzle of the ink-jet apparatus to make the droplets linear. Side by side on the support substrate. In this case, the line width w ₀ of the colored coating film is discharged so as to draw a line of the ink composition between 3×w ₀ , and heat drying is performed as needed, and the volatile component is removed, and then ultraviolet rays are irradiated (UV1). ), a colored coating film having a red ink repellency is formed.

Then, the first ink composition colored in green is blended with the coloring agent containing the ink-repellent component and the ultraviolet-curing component, and as shown in the third (B), the colored coating film in which red is formed in advance is discharged. At this time, lines are drawn with a green ink composition at a distance of 3 × w ₀ . Next, after heating and drying as needed, it is irradiated with ultraviolet rays (UV2) to form a green colored coating film having surface ink repellency. Here, a red colored coating film is formed in advance, and since the function of the partition wall can be achieved, the ink repellency of the surface can be imparted, and the color mixing problem in which a plurality of green coloring coating films overlap on the red colored coating film does not occur. Significant situation. In order to prevent the color mixture from being caused by the overlapping of the adjacent colored coating films, the static contact angle θ _{k of the} green ink composition is preferably 35° or more for the red colored coating film, preferably. It is 40° or more.

Next, depending on the red colored coating film and the green colored coating film, the linear gap region formed on the supporting substrate is colored as shown in Fig. 3(c) blue coloring agent and a second ink composition is discharged, depending on the desired heating after drying, irradiated with ultraviolet rays (the UV3), to form a colored coating film of a blue line width w _0. At this time, a red colored coating film and a green colored coating film are formed in advance, and have the effect of a partition wall, and can impart surface ink repellency, and the static contact of the blue ink composition for the colored coating film. The angle θ _{k is} preferably 35° or more, and more preferably 40° or more, so that the blue ink composition discharged from the nozzle does not exceed this. The method for confirming the static contact angle θ _k of the ink composition for the colored coating film when the ink composition containing the previous green color is confirmed, the present invention is as shown in the first (B) diagram, and is irradiated with actual ultraviolet rays. Or heating and drying the same conditions, forming a colored coating film on a glass substrate (support substrate) with a film thickness of 1 to 5 μm, and dropping 0.5 μl of the ink composition, and measuring after 1 second (23 ° C) The contact angle was used as an ex ante test.

The ink composition of red, green, and blue applied to the support substrate is preferably 3 degrees or more and 25 degrees or less with respect to the contact angle θ _{L of the} support substrate as shown in Fig. 1(A). When θ _L is 3 degrees or less, the wet diffusibility becomes too large, and it is difficult to control the line width w ₀ . On the other hand, when θ _L exceeds 25 degrees, it is likely to cause bulging during inkjet drawing, and it is difficult to draw good linearity. By treating the contact angle θ _L of each of the red, green, and blue ink compositions of the support substrate to a similar value, the line width w ₀ of the colored coating film obtained after the ultraviolet ray irradiation can be made uniform. Further, the method of confirming the contact angle θ _L is, for example, as shown in Fig. 1(A), by dropping 0.5 μL of the ink composition on the support substrate, and measuring the contact angle after 1 second (23 ° C) as beforehand. test.

Further, regarding the specific order in which the ink compositions of the red, green, and blue inks are drawn by the ink jet method, as shown in Fig. 2, the droplets must be continuously bombed; The respective droplets after the bombing are combined. Therefore, for the droplet diffusion diameter D on the support substrate, the distance p ₁ between the droplet ejection positions is set to D>p ₁ . The droplet diffusion diameter D at the time of the shot is generally larger than the diameter d of the droplet flying from the nozzle. Moreover, after the bomb is consumed, the contact substrate can be brought to a static stable state after consuming the exercise energy. However, since it is difficult to measure the diffusion diameter after the bombing, the diffusion diameter D ₁ observed after the anchor is stabilized on the substrate is p ₁ <D ₁ . Further, when p ₁ > D ₁ , each droplet forms an independent dot on the substrate. In addition, also for a certain width w ₀ of adjusting the amount of droplets discharged from the inkjet nozzle 1, the discharge period, dot pitch, and other conventional coating conditions inkjet nozzle pitch. Further, the linear colored coating film may of course be a colored coating film formed of one line by droplets discharged from a plurality of nozzles.

In order to obtain ultraviolet light irradiation in the case of color coating of various colors, a conventional ultraviolet irradiation apparatus can be used, but the ink composition and the ultraviolet irradiation of the ink composition are performed on the same surface using an ink jet apparatus having a table top on which the support substrate is placed. It is also possible to use an LED-UV lamp with high illumination. In addition, as shown in Fig. 3(D), it is possible to make a three-color coloring after the blue colored coating film is obtained. The coating film is cured by ultraviolet rays, and may be additionally subjected to heat treatment. Further, after the ink composition is applied to the support substrate and the ink composition is cured, the adjacent colored coating films rarely overlap, and of course, the coloring coating film may be adjacent to each other without positive coloring. region. At this time, when the non-colored area is used as the display pixel, a bright display can be obtained.

[Production Example 2 of Strip Color Filter]

Alternatively, a plurality of color oil film compositions may be discharged one at a time to produce a strip-shaped color filter. In other words, as shown in Fig. 4(A), in the first inkjet coating, the first ink composition in which red (R), blue (B), and green (G) are colored in combination with the coloring agent is formed. The mean value of the line width of the colored area of the three colors with the same color line as W _av3 × 6 [W _av3 ; the way of the distance between W _av3 = (w _R + w _G + w _B ) / 3], The order of R, G, and B is simultaneously discharged and irradiated with ultraviolet rays, and each colored coating film is formed into a linear shape (UV1). Then, with respect to the linear gap region formed between the colored coating films of the respective colors formed by the first ink composition, as shown in Fig. 4(B), the coloring agent is blended with The second ink composition of red (R), blue (B), and green (G) is discharged and irradiated with ultraviolet rays to form a linear shape (UV2). The first coating and the second coating are both heat-dried as needed to remove volatile components, and then irradiated with ultraviolet rays, as exemplified above. In this way, the two-stage inkjet coating of the even-numbered columns and the odd-numbered columns of the linear colored coating film is divided into basic units to form a three-color colored coating film, and only the necessary portions are allowed to repeat the basic unit depending on the area of the supporting substrate. Further, the number of nozzles is increased, and a color filter having a colored region of a stripe pattern is manufactured. Further, after each of the colored coating films is formed, the entire surface of the colored coating film may be further cured by irradiation with ultraviolet rays, or may be subjected to heat treatment.

[Production Example 3 of Strip Color Filter]

Further, for example, a white color (W) of a transparent resin ink composition containing no coloring pigment or a yellow ink composition (Y) containing a yellow pigment may be added to produce a strip-shaped color filter having a colored region of four colors. In other words, as shown in Fig. 5(A), at the time of the first inkjet coating, the first ink composition colored with red (R) and blue (B) is colored as W _av4 × 4 [ W _av4 is the average of the line widths of the colored areas of the four colors of the target; W _av4 = the manner of the distance between (w _R + w _G + w _B + w _w ) / 4], and R and B are mutually juxtaposed and spit out simultaneously Each of the colored coating films was formed into a linear shape (UV1) by irradiation with ultraviolet rays. Then, by the above-described linear gap region formed between the color coating films of R and B formed by the first ink composition, as shown in Fig. 5(B), the color is colored white (W) And the second ink composition of green (G) is discharged and irradiated with ultraviolet rays, and each colored coating film is formed into a linear shape (UV2).

The manufacturing example of the color filter shown in FIG. 4 and FIG. 5 is the (n+1)th column and the (n+3th) which are (1) with respect to the ink jet method by using a plurality of heads. Column, column (n+5). . . a step of applying a first ink composition containing an ink-repellent component and an ultraviolet-curable component in a linear region of an odd-numbered column; (2) irradiating the ultraviolet ray to cure the ink composition described in (1) to form a first coloring The step of coating the film; (3) relative to the nth column, the (n+2)th column, and the (n+4)th column by the inkjet method. . . In the linear region of the even-numbered column, a step of applying a second ink composition having a static contact angle θ _k of 35° or more and containing an ultraviolet curing component to the first colored coating film; and (4) irradiating ultraviolet rays to cause the above ( 3) A step of curing the ink composition described above to form a second colored coating film; and a method of producing a strip-shaped color filter in which a colored region of a striped pattern is formed on a supporting substrate. Further, the order of the odd-numbered columns referred to in the above step (1) and the even-numbered columns referred to in the step (3) may be reversed.

[Manufacturing Example 1 of Mosaic Color Filter]

Fig. 6 is a view showing the order of manufacturing a mosaic color filter in which colored regions of four colors of red (R), green (G), blue (B), and white (W) are formed into a lattice pattern. First, in the first inkjet coating shown in Fig. 6(A), when a virtual lattice (vertical d ₁ × horizontal d ₁ ) arranged in the xy direction on the support substrate is used, the In the upper right grid of the unit lattice group (2d ₁ × 2d ₁ ), the first ink composition in which the coloring agent containing the ink-repellent component and the ultraviolet-curing component is colored and colored in red is irradiated and irradiated with ultraviolet rays (UV1) to form A red colored coating film with a surface ink repellency. By applying the ink once, the specified coloring coating film can be accurately formed so that the ink composition is not adjacent to the right and left direction of the lattice. At this time, one drop of the ink composition may be embedded in the target lattice, or two or more drops of the ink composition may be embedded.

Then, as shown in Fig. 6(B), in the second inkjet coating, the left lower grid of the grid group is sprinkled with a coloring agent containing an ink-repellent component and an ultraviolet-curing component, and is colored first in green. The ink composition is irradiated with ultraviolet rays (UV2) to form a green colored coating film having surface ink repellency.

Next, in the third inkjet coating, as shown in Fig. 6(C), the first ink composition in which the coloring agent is colored in blue is discharged to the upper left lattice of the unit lattice group, and ultraviolet rays (UV3) are irradiated. Forms a blue colored coating film. In this case, the lattice gap region formed by the red coloring coating film and the green coloring coating film obtained in advance is adjacent to the four grids of the upper, lower, left, and right sides to have the surface ink repellency. A colored coating film is provided, and the colored coating film has a partition wall (or a base). For the color coating film, the blue ink composition has a static contact angle θ _k of 35° or more (preferably). When the temperature is 40° or more, the blue ink composition discharged from the nozzle does not exceed the range.

Similarly, in the fourth inkjet coating, the ink composition containing the transparent resin (white) containing no coloring pigment is discharged to the lower right grid of the unit lattice group, as shown in Fig. 6(D). The previously obtained red colored coating film and the green colored coating film enclose the lattice gap region formed, and the first colored coating film surrounding the surrounding coloring coating film can achieve the function of the partition wall (or the substrate), and the color coating film is When the static contact angle θ _k is 35° or more (preferably 40° or more), the white ink composition discharged from the nozzle does not exceed the range. In other words, the second ink composition which does not necessarily have to use the ink repellent component can be used for the ink composition used in the third and fourth ink application. Of course, the second ink composition may also contain an ink repellent component. After the white ink composition is applied, a colored coating film is formed by irradiation of ultraviolet rays, whereby a mosaic color filter having four colored regions in the lattice pattern can be obtained. Further, for example, when a non-colored region is used instead of a white colored coating film, and this is used as a transparent pixel region, it can be used for electronic paper applications. Further, as shown in Figs. 7 and 8, the number of colors and the number of nozzles when the first ink composition is applied by inkjet can be plural, and a plurality of nozzles can be used. In short, in the same inkjet coating number, the ink composition was applied to a lattice arranged in the x direction or the y direction, and the coating conditions were adjusted so that the pixels did not contact each other on the periphery. Specifically, for example, when three colors are applied, the nozzles of the respective colors are applied so as not to be in contact with each other in the x direction and the y direction at the time of the first application, and the method of interposing the three colors in the second time is used.

The conditions of ultraviolet irradiation or the ultraviolet curing of each ink composition may be performed by heating and drying as needed, or a four-color colored coating film may be formed on the support substrate, and then subjected to comprehensive ultraviolet irradiation or heat treatment. Both are the same as the manufacturing examples of the above-described strip-shaped color filter. Further, in the case of producing a mosaic color filter, the contact angle θ _{L of the} first ink composition and the support substrate is preferably 3° or more, and when it is less than 3°, it is difficult to control the wet diffusion area. Further, the upper limit is preferably 45 degrees or less, and when it exceeds this value, the colored area is unstable when a plurality of droplets are combined. Further, the contact angle of the second ink composition to the supporting substrate is not limited because the first ink composition is buried between the colored coating films. When the wet diffusion is emphasized, the contact angle θ _L is preferably 25 or less. The method of confirming the contact angle θ _L or the method of confirming the static contact angle θ _k of the second ink composition for the first colored coating film, the content described in the production example of the strip color filter is similarly It can also be applied to the manufacture of the mosaic color filter.

[Manufacturing Example 2 of Mosaic Color Filter]

In addition, Fig. 7 shows a manufacturing sequence of a mosaic color filter in which three colors of red (R), green (G), and blue (B) are colored regions of a lattice pattern. This example is based on the first inkjet coating, and is given by (x _n , y _n ), (x _n+1 , y _n ), (x _n , y _n+1 ), and (x _n+1 , y _{n Between} the two lattices of the lattice (x _n , y _n ) of the unit lattice group a formed by the four grids of ₊₁ ) and the positional relationship of the lattice (x _n+1 , y _n+1 ), each of the four droplets is discharged. The first ink composition is colored in red, and the surface ink repellency is induced by ultraviolet curing (UV1) to form a red colored coating film. Next, for the two lattices forming the lattice (x _n , y _n+1 ) and the positional relationship with the lattice (x _n+1 , y _n+2 ), each of the four inks which are colored in green is discharged. And the surface ink repellency is induced by ultraviolet curing (UV2) to form a green colored coating film.

In the above, for example, the lattice (x _n , y _n+2 ) is colored by the four adjacent grids of the left and right sides to be the lattice gap region surrounded by the first colored coating film colored with red and green. In the case of the secondary inkjet coating, a second ink composition in which the static contact angle θ _k is 35° or more (preferably 40° or more) and is colored blue is applied to the red and green colored coating films. Ultraviolet rays were formed to form a second colored coating film, and a mosaic color filter having a three-color lattice pattern was obtained. Further, as shown in Fig. 7, the non-colored regions remain in the corner portions of the four colored coating films embedded in the lattice, and the non-colored regions can be used for color filters for electronic paper or the like without particular problems. Further, as described above, in the first inkjet coating and the second inkjet coating, the colored coating film formed in the lattice is in contact with the peripheral portion, and when the third inkjet coating is applied, the colored coating film can be achieved. It is called the function of the partition wall, so that the discharged second ink composition can be prevented from being mixed by the surface ink repellency of the previously formed colored coating film, and the overlapping or uncolored portion of the colored coating film can be reduced. In the coating process of the respective colors described above, the positional relationship of the colored lattices is defined, but the order of coloring is not limited by the description.

[Manufacturing Example 3 of Mosaic Color Filter]

In addition, Fig. 8 is a view showing another example of a manufacturing procedure of forming a mosaic color filter in which three colors of red (R), green (G), and blue (B) are colored regions of a lattice pattern, and this example is In the first inkjet coating, the first ink compositions of the three colors are discharged in a positional relationship between the lattice (x _n , y _n ) of the unit lattice group a and (x _n+1 , y _n+1 ). A three-color colored coating film was formed by irradiating ultraviolet rays.

Next, in the second inkjet coating, the lattice gap region formed during the first inkjet coating is applied as a lattice (x _n , y _n+1 ) and a lattice (x _n+1 , y _n ). Each of the three ink compositions of the three colors was discharged and irradiated with ultraviolet rays (UV2) to form a color coating film of three colors, and a mosaic color filter was obtained. In this manner, by forming the four corners of the colored coating film embedded in the lattice non-contact, and contacting the colored coating films adjacent to the four sides, a color filter having few colored regions can be formed. At this time, as described above, the first inkjet coating can be carried out for multiple colors. Multiple nozzles are coated at the same time.

In the following, the present invention will be more specifically described by way of examples and the like. Moreover, the "parts" described below represent parts by mass.

[Examples] [Coloring inkjet (R1; red, G1; green, B1; blue, W1; white) modulation]

As shown in Table 1, the color filter was firstly used as a fine pigment to make the polymer dispersant coexist, and diethylene glycol monoethyl ether acetate was used as a solvent to disperse in a bead mill to prepare red, green, and blue pigments. And white dispersion. The dispersion was mixed in the composition shown in Table 1, and a fluorochemical oligomer (Daikin Chemical Industry Co., Ltd. trade name: Optool DAC) and a polymer dispersant component were added to the lyophobic component to make the mixed solution 1 μm. The microfilter is subjected to pressure filtration to prepare a color inkjet (ink composition) of each color. The physical property values are shown in Table 1.

Moreover, the abbreviation of Table 1 is as follows.

"PET30": pentaerythritol triacrylate (manufactured by Nippon Kasei Co., Ltd.)

"EGDAC": Diethylene glycol monoethyl ether acetate (Daicel Chemical Industry)

"KBM-5103": 3-propenyloxypropyltrimethoxydecane (manufactured by Shin-Etsu Chemical Co., Ltd.)

"Irgcure 907": 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinylpropan-1-one (manufactured by Chiba Japan)

"BYK-378": Polyether modified polydimethyl siloxane coupling activity Agent (BYK company)

"PR254": Pigment Red 254

"PY150": Pigment Yellow 150

"PG36/PY150=50/50": Co-dispersion of Pigment Green 36 and Pigment Yellow 150

"PB15:6": Pigment Blue 15:6

Further, regarding the physical property values shown in Table 1, the ink viscosity was measured at 23 ° C using an E-type viscometer. The surface tension of the ink was measured by a buoyancy method using a platinum plate using CBVP-Z (manufactured by Kyowa Interface Science Co., Ltd.) at 23 °C. In addition, the surface state and the size of the coloring elements described below were measured by an optical microscope after the shape of the elastic lens, and the shape was measured using an optical interference type surface shape measuring instrument WYCO NT 1100 (manufactured by VEECO, Japan). . Further, each of the colored inks R1, B1, G1, and W1 obtained above was obtained by using an Inkjet Head (KM512M, 14 pl type) manufactured by Konica Minolta at a driving frequency of 4.8 kHz, an applied voltage shown in Table 2, and a head temperature of 23 °C. When the test was continuously performed for 10 minutes, it was confirmed that the nozzle was completely blocked, and good discharge characteristics were exhibited.

In addition, the contact angle at the time of actual inkjet coating is extremely small, and it is difficult to directly measure the contact angle by the contact angle meter. Therefore, the diffusion diameter after the bomb is specified in advance and the support substrate is used. The relationship between the contact angles. In other words, the static contact angle θ _L and the diffusion diameter D1 occupied by the droplets of the specified volume v diffused on the support substrate have a relationship as shown in Fig. 14, for example, when the droplet is 14 pl, the static contact angle is 3~ The diffusion diameter is in the range of 140 μm to 65 μm at 25°. The following describes the droplet volume at the time of inkjet coating, and measures the diffusion diameter D1 by an optical microscope. The relationship obtained from the graph is converted into a static contact angle θ _{L of the} ink composition for the supporting substrate. .

[Example 1]

The above-described coloring ink G1 was filled with Inkjet Head KM512M manufactured by Konica Minolta, and an isolated point having a dot pitch of 200 μm was drawn on a PET film (Model GT701#130) of Toyobo Co., Ltd. on a transparent support substrate using a 1-nozzle. Further, 1500 mJ (I-line reference) ultraviolet ray was irradiated with an ultraviolet exposure machine, and heat treatment was performed at 80 ° C for 30 minutes. The spot diameter and height obtained at this time are shown in Table 2 (the average value of five points is formed).

Further, a dot pitch was 50 μm, and a straight line was formed on the same PET film for inkjet. Then, after drawing, the film was dried on a hot plate at 80 ° C for 30 minutes, irradiated with 1500 mJ (I-line reference) ultraviolet rays by an ultraviolet exposure machine, and further heat-treated at 80 ° C for 30 minutes. The spot diameter, dot height, line width, and line width of the obtained pattern are shown in Table 3.

Next, as shown in Fig. 9, the inter-line pitch was set to be twice as large as the line width, i.e., set to 132 μm, and the nozzle was used in the same manner as described above. The dot pitch was 50 μm and the five lines were parallel, and the ink was drawn in inkjet. On the film. Further, after drawing, drying was performed on a hot plate at 80 ° C for 3 minutes, and 1500 mJ (I-line reference) ultraviolet ray was irradiated with an ultraviolet exposure machine. Then, the colored ink G1 was drawn in the gap of the colored coating film of the obtained five lines in the same manner at a dot pitch of 50 μm, and dried at 80 ° C for 3 minutes, then irradiated with ultraviolet rays of 1500 mJ, and then heat-treated at 80 ° C. minute. The boundary of the obtained nine consecutive lines was observed under a microscope. The straight lines are connected to each other, and the portions overlapping each other are less than 5 μm. In addition, for the purpose of measuring the static contact angle θ _k (see FIG. 1 ) of the colored ink G1 for the colored coating film, the ink G1 is spin-coated on the 5 吋 glass substrate to expose the machine (illuminance 50 mJ/cm ² ). Ultraviolet rays of 1500 mJ were irradiated at one time to form a colored coating film substrate. When 0.5 μl of the ink G1 was dropped on the substrate, and the static contact angle (23 ° C) was measured, it was confirmed to be 45°. Further, as shown in Table 2, since the wet diffusion diameter per one drop of the colored ink G1 of the PET film for inkjet is 75.9 μm, it can be seen from the graph shown in Fig. 14 that the colored ink G1 is PET for inkjet. The film has a static contact angle θ _{L of} about 20°. This is shown in Table 4.

[Embodiment 2]

In the same manner as in Example 1, five lines were formed on the PET film for inkjet using the colored ink G1 at a pitch of 132 μm, and dried at 80 ° C for 3 minutes, and then irradiated with 1500 mJ by an ultraviolet exposure machine. Then, the colored ink R1 was drawn between the five lines in the same manner as in Example 1 at a dot pitch of 50 μm. After drying at 80 ° C for 3 minutes, it was exposed to 1500 mJ, and heat treatment was performed at 80 ° C for 30 minutes. The interface between the green color originally drawn and the red color depicted in the second time was observed by a microscope, and there was no color mixing between the colored layers, and the lines were connected to each other, and the portions overlapping each other were less than 5 μm. Further, for the purpose of measuring θ _k (see FIG. 1 ), the ink G1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a colored coating film substrate. 0.5 μl of the ink R1 was dropped on the substrate, and when the static contact angle (23 ° C) was measured, it was confirmed to be 45°.

[Example 3]

In the same manner as in Example 1, five lines were formed on the PET film for inkjet using a coloring ink G1 at a pitch of 132 μm, and after drying at 80 ° C for 3 minutes, ultraviolet exposure of 1500 mJ was performed. Then, the colored ink B1 was drawn between the five lines in the same manner as in Example 1 at a dot pitch of 50 μm. Drying, exposure, and heat treatment were carried out in the same manner as in Example 1. The green color originally drawn and the blue boundary image drawn by the second time were observed by a microscope, and the lines were connected to each other, and the portions overlapping each other were less than 1 μm. Further, for the purpose of measuring θ _k (see FIG. 1 ), the ink G1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a colored coating film substrate. When 0.5 μl of the ink B1 was dropped on the substrate, and the static contact angle (23 ° C) was measured, it was confirmed to be 45°.

[Example 4]

In the same manner as in Example 1, five lines were formed on the PET film for inkjet using a coloring ink G1 at a pitch of 132 μm, and after drying at 80 ° C for 3 minutes, ultraviolet exposure of 1500 mJ was performed. Then, the colored ink W1 was drawn between the five lines in the same manner as in Example 1 at a dot pitch of 50 μm. Drying, exposure, and heat treatment were carried out in the same manner as in Example 1. The green color originally depicted by the microscope and the white boundary interface depicted by the second time were observed, and the lines were connected to each other on the line, and the portions overlapping each other were less than 1 μm. Further, for the purpose of measuring θ _k (see FIG. 1 ), the ink G1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a colored coating film substrate. When 0.5 μl of the ink B1 was dropped on the substrate, and the static contact angle (23 ° C) was measured, it was confirmed to be 45°.

[Example 5]

An inkjet head KM512M manufactured by Konica Minolta was used, and the above-described colored inkjet B1 was filled, and a nozzle was used to draw an isolated image with a dot pitch of 200 μm on a PET film (Model GT701#130) for Toyobo-made inkjet on a transparent support substrate. Point, 1500 mJ (I-line reference) exposure was performed with an ultraviolet exposure machine, and heat treatment was performed at 180 ° C for 30 minutes. At this time, the obtained spot diameter and height are shown in Table 2 (the average value of five points is formed).

Further, a line was formed on the PET film for inkjet so that the dot pitch was 50 μm. Further, after drawing, the film was dried on a hot plate at 80 ° C for 3 minutes, exposed to 1500 mJ (I-line reference) by an ultraviolet exposure machine, and further heat-treated at 80 ° C for 30 minutes. The line width and line width of the obtained pattern are shown in Table 3.

Next, as shown in FIG. 9, the line pitch is set to twice the line width, that is, 133 μm, and one nozzle is used, and the five lines are parallel to each other in the same manner as described above. On the PET film. Further, after drawing, the film was dried on a hot plate at 80 ° C for 3 minutes, and exposed to light at 1500 mJ (I line) with an ultraviolet exposure machine.

Then, the colored ink B1 was similarly drawn at a dot pitch of 50 μm between the five lines, and dried at 80 ° C for 3 minutes, then exposed to 1500 mJ, and further heat-treated at 80 ° C for 30 minutes. The boundary of the obtained nine consecutive lines was observed under a microscope. Although the lines are connected to each other, the overlapping portions are less than 5 μm. Further, for the purpose of measuring θ _k (see FIG. 1 ), the ink B1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at a time with an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a transparent coating film substrate. When 0.5 μml of the ink B1 was dropped on the substrate, and the static contact angle (23 ° C) was measured, it was confirmed to be 50°.

[Embodiment 6]

In the same manner as in Example 5, five lines were formed on the PET film for inkjet using a colored ink B1 at a pitch of 133 μm, and dried at 80 ° C for 3 minutes, and then irradiated with 1500 mJ by an ultraviolet exposure machine. Then, the colored ink G1 was drawn between the five lines at a dot pitch of 50 μm in the same manner as in Example 5, dried at 80 ° C for 3 minutes, exposed to 1500 mJ, and heat-treated at 80 ° C for 30 minutes. The interface between the blue color originally drawn and the green color depicted in the second time was observed by a microscope, and there was no color mixing between the colored layers, and the lines were connected to each other, but the overlapping portions were less than 5 μm. Further, for the purpose of measuring θ _k (see FIG. 1 ), the ink B1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a colored coating film substrate. When 0.5 μl of the ink G1 was dropped on the substrate, and the static contact angle (23 ° C) was measured, it was confirmed to be 50°.

[Embodiment 7]

In the same manner as in Example 5, five lines were formed using the colored ink B1 at a pitch of 133 μm, and after drying at 80 ° C for 3 minutes, exposure at 1500 mJ was performed. Then, the colored ink R1 was drawn between the five lines in the same manner as in Example 5 at a dot pitch of 50 μm, and dried, exposed, and heat-treated in the same manner as in Example 5. The interface between the blue color originally drawn and the red color depicted in the second time was observed by a microscope, and the lines were connected to each other, and the portions overlapping each other were less than 5 μm. Further, for the purpose of measuring θ _k (see FIG. 1 ), the ink B1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a colored coating film substrate. 0.5 μl of the ink R1 was dropped on the substrate, and when the static contact angle (23 ° C) was measured, it was confirmed to be 50°.

[Embodiment 8]

In the same manner as in Example 5, five lines were formed using the colored ink B1 at a pitch of 133 μm, and after drying at 80 ° C for 3 minutes, exposure at 1500 mJ was performed. Then, the colored ink W1 was drawn between the five lines in the same manner as in Example 5 at a dot pitch of 50 μm, and dried, exposed, and heat-treated in the same manner as in Example 5. The blue color originally drawn and the white boundary image drawn by the second time were observed by a microscope, and although the lines were connected to each other, the overlapping portions were less than 5 μm. Further, for the purpose of measuring θ _k (see FIG. 1 ), the ink B1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a colored coating film substrate. 0.5 μl of the ink R1 was dropped on the substrate, and when the static contact angle (23 ° C) was measured, it was confirmed to be 50°.

[Embodiment 9]

An inkjet head KM512M manufactured by Konica Minolta was used, and the coloring inkjet R1 was filled, and a nozzle was used to draw an isolated film having a dot pitch of 200 μm on a PET film (Model GT701#130) of Toyobo Co., Ltd. for a transparent support substrate. Point, 1500 mJ (I-line reference) exposure was performed with an ultraviolet exposure machine, and heat treatment was performed at 80 ° C for 30 minutes. At this time, the obtained spot diameter and height are shown in Table 2 (the average value of five points is formed).

Further, a line was formed on the same PET film for inkjet so that the dot pitch was 50 μm. Further, after drawing, the film was dried on a hot plate at 80 ° C for 3 minutes, exposed to 1500 mJ (I-line reference) by an ultraviolet exposure machine, and further heat-treated at 80 ° C for 30 minutes. The line width and line width of the obtained pattern are shown in Table 3.

Next, as shown in FIG. 9, the line-to-line pitch is set to twice the line width, that is, 134 μm, and one nozzle is used, and the five lines are parallel to each other in the same manner as described above. On the PET film. Further, after drawing, the film was dried on a hot plate at 80 ° C for 3 minutes, and exposed to light at 1500 mJ (I line) with an ultraviolet exposure machine. Then, the colored ink R1 was similarly drawn at a dot pitch of 50 μm between the five lines, and dried at 80 ° C for 3 minutes, then exposed to 1500 mJ, and further heat-treated at 80 ° C for 30 minutes. The boundary of the obtained nine consecutive lines was observed under a microscope. Although the lines are connected to each other, the overlapping portions are less than 5 μm. Further, for the purpose of measuring θ _k (refer to Fig. 1), the ink R1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at a time with an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a colored coating film substrate. 0.5 μml of the ink R1 was dropped on the substrate, and when the static contact angle (23 ° C) was measured, it was confirmed to be 50°.

[Embodiment 10]

In the same manner as in Example 9, five lines were formed on the PET film for inkjet using a colored ink R1 at a pitch of 134 μm, and dried at 80 ° C for 3 minutes, and then irradiated with 1500 mJ by an ultraviolet exposure machine. Then, the colored ink G1 was drawn between the five lines in the same manner as in Example 9 at a dot pitch of 50 μm. After drying at 80 ° C for 3 minutes, it was exposed to 1500 mJ, and heat treatment was performed at 80 ° C for 30 minutes. The interface between the red color originally drawn and the green color depicted in the second time was observed by a microscope, and there was no color mixing between the colored layers, and the lines were connected to each other, but the portions overlapping each other were less than 5 μm. Further, for the purpose of measuring θ _k (see FIG. 1 ), the ink R1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a colored coating film substrate. When 0.5 μl of the ink G1 was dropped on the substrate, and the static contact angle (23 ° C) was measured, it was confirmed to be 50°.

[Example 11]

In the same manner as in Example 9, five lines were formed using the colored ink R1 at a pitch of 134 μm, and after drying at 80 ° C for 3 minutes, exposure at 1500 mJ was performed. Then, the colored ink B1 was drawn at a dot pitch of 50 μm in the same manner as in Example 9 between the five lines, and dried, exposed, and heat-treated in the same manner as in Example 9. The red color originally drawn and the blue boundary image drawn by the second time were observed by a microscope, and the lines were connected to each other, and the portions overlapping each other were less than 1 μm. Further, for the purpose of measuring θ _k (see FIG. 1 ), the ink R1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a colored coating film substrate. When 0.5 μl of the ink B1 was dropped on the substrate, and the static contact angle (23 ° C) was measured, it was confirmed to be 50°.

[Embodiment 12]

In the same manner as in Example 9, five lines were formed using the colored ink R1 at a pitch of 134 μm, and after drying at 80 ° C for 3 minutes, exposure at 1500 mJ was performed. Then, the colored ink W1 was drawn between the five lines in the same manner as in Example 9 at a dot pitch of 50 μm, and dried, exposed, and heat-treated in the same manner as in Example 9. The red color originally drawn and the white interface depicted in the second time are observed by a microscope, and the lines are connected to each other, but the overlapping portions are less than 1 μm. Further, for the purpose of measuring θ _k (see FIG. 1 ), the ink R1 was spin-coated on a 5-inch glass substrate, and exposed to 1500 mJ at an exposure machine (illuminance of 50 mJ/cm ² ) to prepare a colored coating film substrate. When 0.5 μl of the ink B1 was dropped on the substrate, and the static contact angle (23 ° C) was measured, it was confirmed to be 50°.

[Example 13]

The white inkjet W1 was filled with an inkjet head KM512M manufactured by Konica Minolta, and an isolated dot was drawn with a dot pitch of 200 μm on a PET film (Model GT701#130) of Toyobo Co., Ltd. on a transparent support substrate using a single nozzle. The exposure was performed at 1500 mJ (I-line reference) with an ultraviolet exposure machine, and further heat treatment was performed at 80 ° C for 30 minutes. At this time, the obtained spot diameter and height are shown in Table 2 (the average value of five points is formed).

Further, a straight line was formed on the PET film for inkjet so that the dot pitch was 50 μm. Further, after drawing, the film was dried at 80 ° C for 3 minutes on a hot plate, exposed to 1500 mJ (I-line reference) by an ultraviolet exposure machine, and further heat-treated at 80 ° C for 30 minutes. The line width and line width of the obtained pattern are shown in Table 3.

[Comparative Examples 1 to 3]

In the R1, B1, and G1 inks used in the above examples, the colored inks R1‵, G1‵, and B1‵ were prepared in the same manner except for the lyophobic component. In the same manner as in Example 1, five lines were formed using the colored ink G1 以 at a distance of 133 μm, and the colored ink G1 ‵ (Comparative Example 1), B1 ‵ (Comparative Example 2), or R1 ‵ ( Comparative Example 3) was dried at 80 ° C for 3 minutes, exposed to 1500 mJ, and then heat-treated at 80 ° C for 30 minutes. In Comparative Example 1, the interface between the green color originally drawn and the coloring layer drawn at the second time was observed by a microscope. There are cases where they overlap each other, and the overlapping portions thereof exceed 5 μm. The same applies to Comparative Examples 2 and 3. (Table 4).

[Embodiment 14] (Review 3 line fit conditions 1~4)

The Konica Minolta inkjet head KM512M was used to fill the coloring inkjet G1, and the PET film (Model GT701#130) of Toyobo Co., Ltd. for the transparent support substrate was used to eject the droplets from the 3 nozzles to make the line width W. A line of ₁ (μm) is formed as follows (Fig. 10). In other words, the head is inclined with respect to the traveling direction, and the line pitch LP when the ink is discharged from the two nozzles is adjusted to 90 μm, and the dot pitch P _{1 of the} respective lines is P1 = 50 μm, forming two independent lines (line i and Line ii). Then, at a position LP/2=45 μm between the lines between the two lines, one nozzle was used to draw at a dot pitch P ₁ = 50 μm (line iii) to form a line of the conjugate. After drawing, after drying at 80 ° C for 3 minutes, ultraviolet curing was performed at 1500 mJ (3 line conditions 1). When the shape was observed by a microscope, a line having good linearity was formed, and the line width W ₁ was 153 μm and the height was 2.2 μm (Table 5).

(3 lines fit condition 2)

In the three-line condition 1, the line iii is formed under the condition that the distance between the two lines of the first line i and the line ii is 100 μm, and the line between the lines is LP/2=50 μm, forming a line of the line. In addition, in the same manner as the three-line combination condition 1, a line having good linearity is formed. The resulting combined line had a line width W ₁ of 163 μm and a height of 1.8 μm (Table 5).

(3 lines fit condition 3, 4)

In the same manner as the three-line combination condition 1, when the composite line is discharged from the droplets of the three nozzles, the colored ink R1 (three line condition 3) and the colored ink B1 (three line conditions 4) are used to be the same. The conditions are carried out. When the shape was observed by a microscope, one line having good linearity was formed, and the line width W ₁ was 154 μm and 153 μm, respectively, and the heights were 2.2 μm and 2.3 μm (Table 5).

(3 color stripe simultaneous printing / 6W _av3 pitch example)

As shown in Fig. 4, the line width W _av3 = _{153 μm} , the 3 color pixel pitch 3W _av3 = 459 μm, and the stripe having a length of 90.6 mm is produced, so that the stripe-like color filter having an effective coloring area of 90.6 mm × 122.4 mm is [striped In the production example 2 of the color filter, the PET film (Model GT701 #130) for Toyobo Co., Ltd. was produced as follows. At this time, each of the lines in FIG. 4 is formed by combining lines of ink discharged from three nozzles of the KM512M head by means of three line bodies 1, 3 and 4.

First, a KM512M head filled with three colors of colored inks R1, G1, and B1 is prepared, and the combined lines formed by the three line fitting conditions 1, 3, and 4 are in the range of 6 × W _av3 , R The order of G and B was simultaneously discharged in the same manner, and after drying at 80 ° C for 3 minutes, ultraviolet exposure of 1500 mJ was performed. Then, the drawing position is shifted by 3 × W _av3 = 459 μm, and a straight line gap region in which one line is formed by each of the colored coating films is formed so that the three line body conditions 1, 3, and 4 form a combined line. The colored inks R1, G1, and B1 were discharged, dried at 80 ° C for 3 minutes, exposed to ultraviolet light at 1500 mJ, and further heat-treated at 80 ° C for 30 minutes. As a result, a color filter of 3 colors of stripes each having a length of 90.6 mm and a colored coating film of the same color occupying an area of a line average width W _av3 and a width of 122.4 mm was obtained. The color coating films of the respective colors have a line width of 152 to 154 μm and a height of 2.2 to 2.3 μm. Further, the stripes were continuously connected, and when the respective stripe interfaces were observed, the widths of the unfolded portions and the uncolored portions were less than 5 μm.

[Example 15] (4-color stripe simultaneous printing / 4W _av4 pitch example)

As shown in Fig. 5, the color filter of the four-color stripe in which the three-color stripe is added and the colored ink (colorless ink) W1 is added is used as follows, as shown in Fig. 5, as described below. A colored area was formed on a PET film for inkjet printing (model GT701#130); the length was 90.6 mm × the width was 122.4 mm (diagonal 6 吋). At this time, each of the lines in Fig. 5 was formed by discharging ink from three nozzles of the KM512M head shown by three line fitting conditions 1, 3 and 4.

First, a KM512M head filled with colored inks R1 and B1 is prepared, and the colored ink R1 is drawn on the basis of three line conditions 4, and the straight line is drawn at a pitch of 4×W _av4 =612 μm, while the colored ink B1 is freely colored ink R1. The resulting combined line was moved by 306 μm, and the straight line was drawn at a pitch of 4 × W _av4 = 612 μm on the basis of three line conditions 3, and dried at 80 ° C for 3 minutes, and then exposed to ultraviolet light of 1500 mJ. Then, the colored ink G1 and the colorless ink W1 were filled in the respective heads, and the pre-printed red and blue lines were drawn at a pitch of 4 × W _av4 = 612 μm as shown in Fig. 5 . After the drawing, the film was dried at 80 ° C for 3 minutes, exposed to ultraviolet light at 1500 mJ, and further heat-treated at 80 ° C for 30 minutes to expose to 1,500 mJ of ultraviolet light. As a result, a color filter having a 4-color stripe of each colored coating film at a pitch of 153 μm was produced. Each of the colored coating films has a line width of 151 to 153 μm and a height of 2.2 to 2.3 μm. Further, when each stripe interface was observed, the width of the overlapping and uncoated portions was less than 5 μm. Fig. 11 is a photograph of the striped color filter obtained in the same manner as in Example 15.

[Example 16] (12-point condition review, 3rd application of 3-color color filter)

A mosaic color filter of three colors and a colorless color was produced on the basis of [Production Example 1 of the mosaic color filter shown in Fig. 6] (the fourth color was colorless, and the coloring coating film could not be formed). First, a Konica Minolta inkjet head KM512M filled with the colored ink G1 is prepared, and a droplet is ejected on the PET film (model GT701#130) of Toyobo Co., Ltd., which is a transparent support substrate, as shown in Fig. 12. The size of the colored coating film (hereinafter referred to as "1 pixel") embedded in the first cell is set to 165 μm × 165 μm, and the distance between the pixels is set to 330 μm × 330 μm in the xy direction, and 150 in the y direction. Draw 200 in the x direction. When the one pixel is formed, in the first column of the first pixel, three dots are formed from the one nozzle toward the Y direction by the dot pitch P ₁ = 52 μm, and the gap in the Y direction is 165 μm, similarly, P ₁ = 52 μm was formed into 3 dots, and 150 repetitions were drawn in the Y direction. Then, PL = 108 μm is released in the X direction, and the IV column parallel to the first column in the 1 pixel is drawn in the Y direction in the same manner as the I column. Next, PL/3 = 36 μm between the first column and the IV column in one pixel, and the second column is formed in the same manner as the first column, and the third column is drawn in the same manner as PL/3 = 36 μm. Thus, in the first column, the second column, the third column, and the fourth column in the 1 pixel, 1 pixel formed by 12 dots is formed to form a continuous colored coating film having a pixel size of x. The direction or y direction is the same 163~166μm. Similarly, the 1 pixel was formed into 200 columns at a pitch of 330 μm in the x direction. After the green pattern was formed in this manner, it was dried at 80 ° C for 3 minutes, and then exposed to ultraviolet light at 1500 mJ. Further, the numerical value in the circle attached to the 12-dot of 1 pixel in Fig. 12 indicates the order of the dot. Further, up to the present operation, the first coating shown in Fig. 6(A) shows ultraviolet irradiation with UV1.

Then, Konica Minolta inkjet head KM512M filled with the above-described coloring ink R1 is prepared, and the lattice of the one pixel which is formed by the green coloring coating film described above as shown in Fig. 6(B) is obliquely below. In the same manner as the green one, the one pixel formed by the red colored coating film is drawn. In other words, in the same manner as in the case of green, one pixel was drawn in the x-y direction at 150 × 200 columns at a distance of 330 μm × 330 μm, and then dried at 80 ° C for 3 minutes, and then exposed to ultraviolet light at 1500 mJ. Thereby, the 1 pixel formed by the green coloring coating film and the 1 pixel formed by the red coloring coating film are formed so as not to overlap on the diagonal line of the lattice. Until the current operation, the second coating shown in Figure 6(B) UV irradiation with UV2.

Next, as shown in Fig. 6(C), the lattice gap region formed by the green coloring coating film and the red coloring coating film is used as the third coloring ink B1, and G1. The drawing was carried out in the same manner as in the case of R1, and after drying at 80 ° C for 3 minutes, ultraviolet exposure (UV 3 ) of 1500 mJ was performed. Finally, heat treatment was performed at 80 ° C for 30 minutes to form a color filter having a three-color mosaic configuration (four colors when no colored regions were used). The width of each pixel of each color is 164~165μm at the same time, and the height is 2.9~3.2μm. Further, when the interface of each pixel was observed, the width of the uncoated portions of each other was less than 15 μm, and the excessively overlapping portions overlapping each other did not reach a width of 5 μm. Figure 13 is a photograph of the mosaic color filter obtained in Example 16.

[Comparative Example 4] (Three-color mosaic filter is produced by three lithography methods)

A mosaic color filter prepared in Example 16 was produced on 6 inch glass using 3 times of lithography. As the mask, a quartz cover having a window opening of 164 μm × 164 μm without a chromium vapor-deposited film was used. The ink used was SGREEN, SBLUE, and SRED manufactured by Nippon Steel Chemical Co., Ltd.

First, SRED was applied onto 6-inch glass by spin coating, and dried at 80 ° C, and then exposed to light at 100 mJ through the photomask using a high-illuminance exposure machine (illuminance of 50 mJ/cm ² ). Then, development was carried out in a 0.05% KOH developing solution at 23 ° C for 60 minutes to form a mosaic pattern, and heat treatment was performed at 230 ° C for 30 minutes. The pixel produced at this time was a forward taper having an area of 166 μm × 166 μm and a film thickness of 1.5 μm.

Then, SGREEN was applied by spin coating on the substrate carrying the red pixel, and dried at 80 ° C, and then positioned on a high-illumination exposure machine, and exposed, developed, and under the same conditions. Heat treatment. Further, SBLUE was applied to produce a color filter of three-color pixels (the one-pixel portion was not colored).

When the obtained color filter was observed under a microscope, a gap having no coloration due to positioning disengagement between the respective colors was observed, and the overlap portion exceeded 5 μm. In other words, the lithography method is applied because the ink after the second color is overlaid on the previous pixel, and the subsequent exposure precision is likely to cause overlap or gap, as in the inkjet method shown in Embodiment 16, due to The second ink is widened in the gap portion, and the repellency of the cured product of the first ink composition causes the pixels to come into contact with each other, but it is confirmed that a color filter having a small overlap can be produced.

[Fig. 1] Fig. 1 is a typical view showing a static contact angle of an ink composition.

[Fig. 2] Fig. 2 is a view showing a typical view of forming dots and lines by ink jet drawing pitch.

[Fig. 3] Fig. 3 is a typical view showing an example of a manufacturing procedure of a strip-shaped color filter.

[Fig. 4] Fig. 4 is a typical view showing another example of the manufacturing sequence of the strip-shaped color filter.

[Fig. 5] Figure 5 shows another manufacturing of the strip color filter. A typical diagram of a sequence.

[Fig. 6] Fig. 6 is a view showing a typical example of a manufacturing sequence of a mosaic color filter.

[Fig. 7] Fig. 7 is a view showing a typical example of another manufacturing sequence of the mosaic color filter.

[Fig. 8] Fig. 8 is a typical view showing another example of the manufacturing sequence of the mosaic color filter.

[Fig. 9] Fig. 9 is a typical view showing a state in which a linear colored coating film is formed in the embodiment.

[Fig. 10] Fig. 10 is a view showing a typical view of a case where a droplet is formed into a straight line.

[Fig. 11] Fig. 11 is a photograph showing a photograph of a strip-shaped color filter obtained in Example 15 under a light microscope and incident on white light from under the PET film.

[Fig. 12] Fig. 12 is a view showing a typical illustration of a method for drawing one pixel (an example of a droplet of 14 pl) formed in a lattice when a mosaic color filter shown in Fig. 6 is produced.

[Fig. 13] Fig. 13 is a photograph showing a photograph of a mosaic color filter obtained in Example 16 under a light microscope and incident on white light from under the PET film.

[Fig. 14] Fig. 14 is a graph showing the relationship between the droplet diffusion diameter D1 and the contact angle Q _L of the ink composition dropped on the support substrate.

Claims (9)

A method for producing a color filter, which is a method for producing a color filter comprising a plurality of colored regions on a support substrate, characterized in that the first ink composition containing the ink-repellent component and the ultraviolet-curable component is ink-jetted The method is discharged and cured by irradiation with ultraviolet rays, and a predetermined gap region formed by the first colored coating film is provided on the support substrate, and the static contact angle θ with respect to at least the first colored coating film is fixed to the gap region. _k is 35° or more, and the second ink composition containing the ultraviolet curable component is discharged by an inkjet method, and is cured by irradiation with ultraviolet rays to form a second colored coating film so as not to pass through the partition wall and the substrate, and the support group A plurality of colored regions formed by the colored coating film are formed on the material. The method for producing a color filter according to claim 1, wherein when the gap region formed by the first colored coating film is formed, the first ink composition is discharged and hardened to be adjacent to the obtained first The first coloring coating film is formed by coloring the coating film, discharging the first ink composition, and curing it in a plurality of cycles. The method for producing a color filter according to claim 1 or 2, wherein the second ink composition is discharged and formed with respect to a linear gap region formed by the first colored coating film arranged in parallel The second colored coating film was used to obtain a striped colored region. The method for producing a color filter according to the first or second aspect of the invention, wherein in the lattice aligned in the xy direction, the first colored coating film surrounds four lattices adjacent to each other in the upper, lower, left and right directions, and a lattice is formed on the center. In the gap region, the second ink composition is discharged, and a second colored coating film is formed, The colored area of the lattice pattern is obtained. The method for producing a color filter according to any one of claims 1 to 4, wherein an inkjet device having a mesa on which a support substrate is placed is used, and discharge of the ink composition and ultraviolet irradiation are performed on the same surface. . The method for producing a color filter according to any one of claims 1 to 5, which is a color filter used in a reflective display device such as an electronic paper. A color filter produced by the method of any one of claims 1 to 6, which is formed by an inkjet method without a partition wall or a substrate. A color filter according to claim 7 of the patent application is used for a reflective display device. A reflective display device characterized by having a color filter according to claim 7 or 8.