JP2002311231A - Color filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a color filter with high-definition, without any defect such as a bright defect and manufactured simply and easily. SOLUTION: The color filter is provided with a transparent substrate, coloring layers with a plurality of colors formed on the transparent substrate with a specified pattern, and light shielding layers located on boundary parts of the respective coloring layers where at least one layer out of the coloring layers and the light shielding layers are formed on the transparent substrate via specified wettable parts of a layer of a wettability varying component. A photocatalyst containing layer composed of at least a binder and a photocatalyst is made to be the layer of the wettability varying component and the specified wettable parts are highly hydrophilic parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter, and more particularly to a color filter capable of manufacturing a color liquid crystal display device having excellent display quality.

[0002]

2. Description of the Related Art In a liquid crystal display (LCD), a color filter is used in both an active matrix system and a simple matrix system in order to respond to recent demands for colorization. For example, in an active matrix type liquid crystal display using a thin film transistor (TFT), the color filter has three primary color patterns of red (R), green (G), and blue (B). The liquid crystal operates as a shutter by turning ON / OFF the electrode corresponding to the pixel of the color, and light is transmitted through each of the R, G, and B pixels to perform color display. Color mixing is visually performed on the retina by the principle of additive color mixing in which liquid crystal shutters corresponding to pixels of two or more colors are opened to mix colors and make the colors look different.

A conventional color filter is formed by applying a dyeing base material on a transparent substrate, exposing and developing the same through a photomask, and dyeing the formed pattern to form a colored layer. A pigment dispersion method in which a coloring pigment is dispersed in a conductive resist layer in advance and exposed and developed through a photomask to form a coloring layer, a printing method in which a coloring layer of each color is printed on a transparent substrate with a printing ink, a transparent substrate A transparent electrode pattern is formed on the transparent electrode pattern in an electrode solution of a predetermined color, and the operation of electrodeposition is performed three times of R, G, and B to form a colored pattern of each color by an electrodeposition method or the like. Being manufactured.

[0004]

However, in the conventional dyeing method and the pigment dispersion method, a material loss in a coating process on a transparent substrate by spin coating or the like is unavoidable.
A developing step and a washing step are required for each colored pattern formation, and it is difficult to improve material use efficiency and simplify the steps, which hinders reduction in manufacturing cost. Further, in the printing method, it is difficult to form a high-definition pattern, and there is a problem that the pattern shape that can be formed in the electrodeposition method is limited. In order to solve such a problem, a method of manufacturing a color filter using an ink jet method has been developed, but it has been insufficient. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a color filter which has high definition, has no defects such as white spots, and is easy to manufacture.

[0005]

In order to achieve the above object, a color filter according to the present invention comprises a transparent substrate, a colored layer having a plurality of colors formed in a predetermined pattern on the transparent substrate, and A light-shielding layer positioned at a boundary between the colored layers, wherein at least one of the colored layer and the light-shielding layer is formed on the transparent substrate via a specific wettability portion of the wettability changing component layer. The wettability changing component layer is a photocatalyst-containing layer comprising at least a binder and a photocatalyst, and the specific wettability site is a highly hydrophilic site.

Further, the color filter of the present invention comprises: a transparent substrate; a wettability changing component layer provided on the transparent substrate;
A colored layer having a plurality of colors formed in a predetermined pattern on a specific wettability portion of the wettability changing component layer, and a light-shielding layer positioned at a boundary between the colored layers; Is a photocatalyst-containing layer comprising at least a binder and a photocatalyst, and the specific wettability site is configured to be a highly hydrophilic site.

Further, the color filter of the present invention comprises a transparent substrate provided with a light shielding layer in a predetermined pattern, a wettability changing component layer provided on the transparent substrate so as to cover the light shielding layer, With a colored layer of a plurality of colors formed in a predetermined pattern on a specific wettability site of the variable component layer,
The light-shielding layer is located at the boundary of each colored layer, the wettability changing component layer is a photocatalyst-containing layer composed of at least a binder and a photocatalyst, and the specific wettability site is a highly hydrophilic site. did.

Further, the color filter of the present invention comprises a transparent substrate having a light shielding layer in a predetermined pattern, a wettability changing component layer and the wettability changing component layer on the transparent substrate so as to cover the light shielding layer. A laminate with a colored layer formed in a predetermined pattern on a specific wettability portion is provided by laminating a desired number of colors, and the light-shielding layer is located at a boundary between the colored layers, and the wettability change is provided. The component layer was a photocatalyst-containing layer comprising at least a binder and a photocatalyst, and the specific wettability site was configured to be a highly hydrophilic site.

Further, the color filter of the present invention is formed by forming a transparent substrate, a wettability changing component layer provided on the transparent substrate, and a predetermined pattern on a specific wettability portion of the wettability changing component layer. Colored layer formed on the wettability changing component layer and a specific pattern on the specific wettability site of the wettability changing component layer so as to cover the light shielding layer. A laminate with a layer is provided by laminating a desired number of colors, the light-shielding layer is located at the boundary of each colored layer, the wettability changing component layer is a photocatalyst containing layer comprising at least a binder and a photocatalyst, The specific wettability site was configured to be a highly hydrophilic site.

Further, the color filter of the present invention is configured such that the binder contains an organopolysiloxane. Further, the color filter of the present invention may be configured such that the organopolysiloxane is an organopolysiloxane obtained from a composition containing chloro or alkoxysilane, and the organopolysiloxane is obtained from a composition containing a reactive silicone. The structure was such that it was polysiloxane. Further, the color filter of the present invention is configured such that the organopolysiloxane contains a fluoroalkyl group. Further, in the color filter of the present invention, the contact angle of the highly hydrophilic portion with water is 1%.
The configuration was such that it was 0 ° or less.

According to the present invention, the specific wettability site has high wettability with respect to the light-shielding layer paint and the coloring layer paint, and the light-shielding layer paint and the color layer paint are selected only for the specific wettability site. The light-shielding layer and the colored layer are formed with high precision, and the photocatalyst-containing layer becomes highly hydrophilic due to the action of the photocatalyst at the light-irradiated portion, and becomes highly hydrophilic. Is formed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described below with reference to the drawings. Color Filter Figure 1 is a schematic longitudinal sectional view showing an example of an embodiment of a color filter of the present invention. In FIG. 1, a color filter 1 of the present invention includes a transparent substrate 2, a photocatalyst containing layer 3 as a wettability changing component layer formed on the transparent substrate 2, and a specific wettability portion (high A black matrix (light-shielding layer) 4 formed on the (hydrophilic portion) and a colored layer 5 having a plurality of colors, and a protective layer 6 formed so as to cover the black matrix 4 and the colored layer 5 are provided. In this color filter 1, the black matrix 4 is located at the boundary of the colored layer 5.

FIG. 2 is a schematic longitudinal sectional view showing another example of the embodiment of the color filter of the present invention. In FIG. 2, a color filter 11 of the present invention includes a transparent substrate 12, a black matrix (light shielding layer) 14 formed on the transparent substrate 12, and a wet matrix formed on the transparent substrate 12 so as to cover the black matrix 14. A photocatalyst containing layer 13 as a property changing component layer, a colored layer 15 of a plurality of colors formed on a specific wettability portion (highly hydrophilic portion) of the photocatalyst containing layer 13, and a layer covering the colored layer 15. Is provided. In the color filter 11, the black matrix 14 is
5 is located at the boundary.

FIG. 3 is a schematic longitudinal sectional view showing another example of the embodiment of the color filter of the present invention. 3, a color filter 21 of the present invention is formed on a transparent substrate 22, a black matrix (light shielding layer) 24 formed on the transparent substrate 22, and sequentially on the transparent substrate 22 so as to cover the black matrix 24. A laminate comprising a photocatalyst containing layer 23a as a first wettability changing component layer and a red colored layer 25R formed on a specific wettability portion (highly hydrophilic portion) of the photocatalyst containing layer 23a; A laminate comprising a photocatalyst containing layer 23b as a wettability changing component layer and a green colored layer 25G formed on a specific wettability portion (highly hydrophilic portion) of the photocatalyst containing layer 23b;
A laminate comprising a photocatalyst-containing layer 23c as a wettability changing component layer and a blue colored layer 25B formed on a specific wettability portion (highly hydrophilic portion) of the photocatalyst-containing layer 23c; And a protective layer 26 formed so as to cover. In the color filter 21, the black matrix 24 is located at the boundary of the colored layer 25.

FIG. 4 is a schematic vertical sectional view showing another example of the embodiment of the color filter of the present invention. In FIG. 4, a color filter 31 of the present invention includes a transparent substrate 32,
A photocatalyst containing layer 33a as a first wettability changing component layer formed on the transparent substrate 32;
a, a black matrix (light-shielding layer) 34 formed on the specific wettability site (highly hydrophilic site), and a second matrix sequentially formed on the first photocatalyst containing layer 33 a so as to cover the black matrix 34. Photocatalyst containing layer 33b as a wettability changing component layer and red colored layer 3 formed on a specific wettability portion (highly hydrophilic portion) of photocatalyst containing layer 33b
5R, a photocatalyst containing layer 33c as a third wettability changing component layer, and a green colored layer 35G formed on a specific wettability portion (highly hydrophilic portion) of the photocatalyst containing layer 33c. A laminate including a photocatalyst-containing layer 33d as a fourth wettability changing component layer and a blue colored layer 35B formed on a specific wettability portion (highly hydrophilic portion) of the photocatalyst-containing layer 33d; Further, a protective layer 36 formed so as to cover the coloring layer 35 is provided. And
In this color filter 31, the black matrix 3
4 is located at the boundary of the colored layer 35.

Next, the configuration of the above-described color filter of the present invention will be described. (Transparent substrate) The above color filters 1, 11, 21, 3
As the transparent substrates 2, 12, 22, 32 constituting 1
A transparent rigid material having no flexibility such as quartz glass, Pyrex (registered trademark) glass, or a synthetic quartz plate, or a transparent flexible material having flexibility such as a transparent resin film or an optical resin plate can be used. . Of these, Corning 7059 glass is a material having a low coefficient of thermal expansion, excellent dimensional stability and workability in high-temperature heat treatment, and is an alkali-free glass containing no alkali component in the glass. It is suitable for a color filter for a color liquid crystal display device according to the method.

(Wetability changing component layer) The photocatalyst containing layers 3, 13, 23, and 33 as the wettability changing component layers constituting the color filters 1, 11, 21, 31 are composed of at least a binder and a photocatalyst. This is a layer that becomes higher in hydrophilicity due to an increase in critical surface tension due to the action of a photocatalyst by light irradiation. The action mechanism of the photocatalyst represented by titanium oxide in the photocatalyst-containing layer, which is a feature of the present invention, is not necessarily clear, but the carrier generated by light irradiation is directly reacted with a nearby compound. Alternatively, it is considered that the reactive oxygen species generated in the presence of oxygen and water changes the chemical structure of the organic substance.

By using the action of the photocatalyst, oily dirt is decomposed by light irradiation and made hydrophilic so that it can be washed with water, or a hydrophilic film is formed on the surface of glass or the like to provide anti-fogging properties. So-called antibacterial tiles have been proposed that reduce the number of airborne bacteria in the air by forming a layer containing a photocatalyst on the surface of the tile or the like. When a photocatalyst containing layer is used as the wettability changing component layer in the present invention,
The photocatalyst changes the wettability of the light-irradiated part to make it highly hydrophilic by using the action of oxidation, decomposition, etc. of the organic groups and additives that are part of the binder, making it highly hydrophilic with the non-light-irradiated part. A color filter is obtained by making a difference and increasing the receptivity and repulsion of the light-shielding layer paint and the coloring layer paint.

Here, high hydrophilicity means that the contact angle with water is 1
It means that it is 0 ° or less, and in the present invention, a water drop is dropped from a microsyringe and measured 30 seconds later using a contact angle measuring device (CA-Z type manufactured by Kyowa Interface Science Co., Ltd.). Examples of the photocatalyst used in the present invention include titanium oxide (TiO ₂ ), zinc oxide (ZnO), tin oxide (SnO ₂ ), strontium titanate (SrTiO ₃ ), which are known as optical semiconductors.
Tungsten oxide (WO ₃ ), bismuth oxide (Bi
Metal oxides such as ₂ O ₃ ) and iron oxide (Fe ₂ O ₃ ) can be given. In particular, titanium oxide has a high band gap energy, is chemically stable, has no toxicity, and is easily available. Therefore, it is preferably used.

As titanium oxide, both anatase type and rutile type can be used, but anatase type titanium oxide is preferable. Anatase-type titanium oxide has an excitation wavelength of 380 nm or less. Examples of such anatase-type titanium oxide include hydrolytic peptized anatase-type titania sol (STS-02 (average particle size: 7 nm) manufactured by Ishihara Sangyo Co., Ltd.) ST-K01 manufactured by Ishihara Sangyo Co., Ltd.), anatase-type titania sol of nitrate-peptizing type (Nissan Chemical Co., Ltd.)
TA-15 (average particle size: 12 nm)).

The smaller the particle size of the photocatalyst is, the more effective the photocatalytic reaction takes place.
Preferably, a photocatalyst of 20 nm or less is used. In addition, the smaller the particle size of the photocatalyst is, the smaller the surface roughness of the formed photocatalyst containing layer is. It is preferable that the surface roughness of the photocatalyst containing layer exceeds 10 nm. It is not preferable because the expression of the hydrophilic property in the light-irradiated portion is insufficient.

In the present invention, the binder used in the photocatalyst-containing layer preferably has a high binding energy such that the main skeleton is not decomposed by the photoexcitation of the photocatalyst. For example, (1) chloro or alkoxysilane by a sol-gel reaction or the like. And (2) organopolysiloxane obtained by crosslinking a reactive silicone excellent in water repellency and oil repellency, and the like.

In the case of the above (1), the general formula Y _n SiX _4-n
One or more hydrolytic condensates and co-hydrolytic condensates of the silicon compound represented by (n = 1 to 3) are mainly used. In the above general formula, Y can include an alkyl group, a fluoroalkyl group, a vinyl group, an amino group, or an epoxy group, and X can include a halogen, a methoxyl group, an ethoxyl group, or an acetyl group.

Specifically, methyltrichlorosilane, methyltribromosilane, methyltrimethoxysilane, methyltriethoxysilane, methyltriisopropoxysilane, methyltri-t-butoxysilane; ethyltrichlorosilane, ethyltribromosilane, ethyltribromosilane Methoxysilane, ethyltriethoxysilane, ethyltriisopropoxysilane, ethyltri-t-butoxysilane; n
-Propyltrichlorosilane, n-propyltribromosilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, n-propyltriisopropoxysilane, n-propyltri-t-butoxysilane; n-
Hexyltrichlorosilane, n-hexyltribromosilane, n-hexyltrimethoxysilane, n-hexyltriethoxysilane, n-hexyltriisopropoxysilane, n-hexyltri-t-butoxysilane; n-decyltrichlorosilane, n-decyl Tribromosilane,
n-decyltrimethoxysilane, n-decyltriethoxysilane, n-decyltriisopropoxysilane, n-
Decyltri-t-butoxysilane; n-octadecyltrichlorosilane, n-octadecyltribromosilane, n
-Octadecyltrimethoxysilane, n-octadecyltriethoxysilane, n-octadecyltriisopropoxysilane, n-octadecyltri-t-butoxysilane; phenyltrichlorosilane, phenyltribromosilane, phenyltrimethoxysilane, phenyltriethoxysilane, phenyl Triisopropoxysilane, phenyltri-t-butoxysilane; tetrachlorosilane, tetrabromosilane, tetramethoxysilane, tetraethoxysilane, tetrabutoxysilane, dimethoxydiethoxysilane; dimethyldichlorosilane, dimethyldibromosilane, dimethyldimethoxysilane , Dimethyldiethoxysilane; diphenyldichlorosilane, diphenyldibromosilane, diphenyldimethoxysilane, diphenyldiethoxysilane Phenyl methyldichlorosilane,
Phenylmethyldibromosilane, phenylmethyldimethoxysilane, phenylmethyldiethoxysilane; trichlorohydrosilane, tribromohydrosilane, trimethoxyhydrosilane, triethoxyhydrosilane, triisopropoxyhydrosilane, tri-t-butoxyhydrosilane; vinyltrichlorosilane, vinyltribromo Silane, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltriisopropoxysilane, vinyltrit
-Butoxysilane; trifluoropropyltrichlorosilane, trifluoropropyltribromosilane, trifluoropropyltrimethoxysilane, trifluoropropyltriethoxysilane, trifluoropropyltriisopropoxysilane, trifluoropropyltri-t-butoxysilane; γ- Glycidoxypropylmethyldimethoxysilane, γ-glycidoxypropylmethyldiethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ
Glycidoxypropyltriisopropoxysilane, γ
-Glycidoxypropyltri-t-butoxysilane; γ-
Methacryloxypropylmethyldimethoxysilane, γ
-Methacryloxypropylmethyldiethoxysilane,
γ-methacryloxypropyltrimethoxysilane, γ
-Methacryloxypropyltriethoxysilane, γ-
Methacryloxypropyltriisopropoxysilane,
γ-methacryloxypropyltri-t-butoxysilane; γ-aminopropylmethyldimethoxysilane, γ-
Aminopropylmethyldiethoxysilane, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-aminopropyltriisopropoxysilane, γ-aminopropyltri-t-butoxysilane;
γ-mercaptopropylmethyldimethoxysilane, γ-
Mercaptopropylmethyldiethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-mercaptopropyltriethoxysilane, γ-mercaptopropyltriisopropoxysilane, γ-mercaptopropyltri-t-butoxysilane; β- (3,4-epoxy Cyclohexyl) ethyltrimethoxysilane, β- (3,4-epoxycyclohexyl) ethyltriethoxysilane; and their partial hydrolysates; and mixtures thereof, can be used.

As the binder, a polysiloxane containing a fluoroalkyl group can be particularly preferably used. Specifically, one or more hydrocondensation products of the following fluoroalkylsilanes, co-hydrolysis Examples thereof include condensates, and those generally known as a fluorine-based silane coupling agent can be used. CF ₃ (CF ₂ ) ₃ CH ₂ CH ₂ SiOCH ₃ ) ₃ CF ₃ (CF ₂ ) ₅ CH ₂ CH ₂ SiOCH ₃ ) ₃ CF ₃ (CF ₂ ) ₇ CH ₂ CH ₂ SiOCH ₃ ) ₃ CF ₃ (CF _{2 ) 9 CH 2 CH 2 SiOCH 3} ) 3 (CF 3) 2 CFCF 2) 4 CH 2 CH 2 Si (OCH 3) 3 (CF 3) 2 CFCF 2) 6 CH 2 CH 2 Si (OCH 3) 3 (CF _{3) 2 CFCF 2) 8 CH} 2 CH 2 Si (OCH 3) 3 CF 3 (C 6 H 4) C 2 H 4 Si (OCH 3) 3 CF 3 (CF 2) 3 (C 6 H 4) C 2 _{H 4 Si (OCH 3) 3} CF 3 (CF 2) 5 (C 6 H 4) C 2 H 4 Si (OCH 3) 3 CF 3 (CF 2) 7 (C 6 H 4) C 2 H 4 Si ( _{OCH 3) 3 CF 3 (CF} 2) 3 CH 2 CH 2 SiCH 3 (OCH 3) 2 CF 3 (CF 2) 5 CH 2 CH 2 SiCH 3 (OCH 3) 2 CF 3 (CF 2) 7 CH 2 CH _{2 SiCH 3 (OCH 3) 2} C _{3 (CF 2) 9 CH 2} CH 2 SiCH 3 (OCH 3) 2 (CF 3) 2 CF (CF 2) 4 CH 2 CH 2 SiCH 3 (OC
H ₃ ) ₂ (CF ₃ ) ₂ CF (CF ₂ ) ₆ CH ₂ CH ₂ SiCH ₃ (OC
H ₃ ) ₂ (CF ₃ ) ₂ CF (CF ₂ ) ₈ CH ₂ CH ₂ SiCH ₃ (OC
_{H 3) 2 CF 3 (C} 6 H 4) C 2 H 4 SiCH 3 (OCH 3) 2 CF 3 (CF 2) 3 (C 6 H 4) C 2 H 4 SiCH 3 (OCH 3) 2 CF 3 ( _{CF 2) 5 (C 6 H} 4) C 2 H 4 SiCH 3 (OCH 3) 2 CF 3 (CF 2) 7 (C 6 H 4) C 2 H 4 SiCH 3 (OCH 3) 2 CF 3 (CF 2 ) ₃ CH ₂ CH ₂ Si (OCH ₂ CH ₃ ) ₃ CF ₃ (CF ₂ ) ₅ CH ₂ CH ₂ Si (OCH ₂ CH ₃ ) ₃ CF ₃ (CF ₂ ) ₇ CH ₂ CH ₂ Si (OCH ₂ CH ₃₎ ) ₃ CF ₃ (CF ₂ ) ₉ CH ₂ CH ₂ Si (OCH ₂ CH ₃ ) ₃ CF ₃ (CF ₂ ) ₇ SO ₂ N (C ₂ H ₅ ) C ₂ H ₄ CH ₂ Si (OC
H ₃ ) ₃

By using a polysiloxane containing a fluoroalkyl group as described above as a binder, the water repellency of the non-light-irradiated portion of the photocatalyst-containing layer is greatly improved, and the adhesion of the black matrix paint or the coloring layer paint is improved. Develop a function to prevent. Examples of the reactive silicone of the above (2) include compounds having a skeleton represented by the following general formula 1.

[0027]

Embedded image Here, n is an integer of 2 or more. R ¹ and R ² are each a substituted or unsubstituted alkyl, alkenyl, aryl or cyanoalkyl group having 1 to 10 carbon atoms.
Less than 40% of the total is vinyl, phenyl and halogenated phenyl in a molar ratio. Further, those in which R ¹ and R ² are methyl groups are preferred since the surface energy is minimized, and it is preferred that the methyl groups be at least 60% in molar ratio. In addition, at least one chain end or side chain
It has at least two reactive groups such as hydroxyl groups. In addition, a stable organosilicon compound that does not undergo a cross-linking reaction, such as dimethylpolysiloxane, may be mixed with the binder together with the above-mentioned organopolysiloxane.

In the present invention, the photocatalyst-containing layer may contain a surfactant in addition to the above-mentioned photocatalyst and binder. Specifically, NIK manufactured by Nikko Chemicals Co., Ltd.
Hydrocarbons such as KOL BL, BC, BO, and BB series, ZONYL FSN and FSO manufactured by DuPont, Surflon S-141 and 145 manufactured by Asahi Glass Co., Ltd., and Megafax F- manufactured by Dainippon Ink and Chemicals, Inc. 141, 14
4. Neogent F-200, F2
51, Unidyne DS-401 manufactured by Daikin Industries, Ltd.
402, 3M Co., Ltd. Florado FC-170,
176 or other nonionic surfactants of fluorine or silicone type, and cationic surfactants, anionic surfactants and amphoteric surfactants can also be used.

In the photocatalyst-containing layer, in addition to the above-mentioned surfactants, polyvinyl alcohol, unsaturated polyester, acrylic resin, polyethylene, diallyl phthalate, ethylene propylene diene monomer, epoxy resin, phenol resin, polyurethane, melamine resin Oligomers such as polycarbonate, polyvinyl chloride, polyamide, polyimide, styrene butadiene rubber, chloroprene rubber, polypropylene, polybutylene, polystyrene, polyvinyl acetate, polyester, polybutadiene, polybenzimidazole, polyacrylonitrile, epichlorohydrin, polysulfide, polyisoprene, A polymer or the like can be contained.

The formation of the photocatalyst containing layers 3, 13, 23, 33 constituting the color filters 1, 11, 21, 31 is performed by dispersing a photocatalyst and a binder in a solvent together with other additives as necessary. Is prepared, and this coating liquid is applied to form a coating liquid. As the solvent to be used, alcohol-based organic solvents such as ethanol and isopropanol are preferable. The coating can be performed by a known coating method such as spin coating, spray coating, dip coating, roll coating, or bead coating.If the coating contains an ultraviolet-curable component as a binder, the coating is cured by irradiation with ultraviolet light. By doing so, a photocatalyst-containing layer can be formed. The content of the photocatalyst in the photocatalyst containing layer can be set in the range of 5 to 60% by weight, preferably 20 to 40% by weight. Further, the thickness of the photocatalyst-containing layer is preferably in the range of 0.05 to 10 μm.

(Black Matrix) The black matrices 4 and 34 constituting the color filters 1 and 31 are:
The colored layers 5 and 35 are formed at the highly hydrophilic portions of the photocatalyst containing layer 3 and the first photocatalyst containing layer 33a, respectively, and are located outside the boundary between the display layers of the colored layers 5 and 35 and the colored layer forming region. Such black matrices 4 and 34 are layers containing carbon fine particles, metal oxides, inorganic pigments, organic pigments and the like in a resin binder, and have a thickness of 0.5 to 1
It can be set within the range of 0 μm. Examples of the resin binder include aqueous resins such as polyacrylamide, polyvinyl alcohol, gelatin, casein, and cellulose.
Species or a mixture of two or more can be used. Also, as the resin binder, an o / w emulsion type resin composition, for example, one obtained by emulsifying reactive silicone can be used.

The black matrices 14 and 24 forming the color filters 11 and 21 are provided with colored layers 15 and 2.
5 is provided outside the boundary between the display pixel portions and the region where the colored layer is formed. Such a black matrix 1
Nos. 4, 24 are formed by forming a metal thin film of chromium or the like having a thickness of about 1000 to 2000 ° by a sputtering method, a vacuum evaporation method or the like, and patterning the thin film, and a polyimide containing light-shielding particles such as carbon fine particles. Form a resin layer of resin, acrylic resin, epoxy resin, etc.,
This resin layer is formed by patterning, carbon fine particles, a photosensitive resin layer containing light-shielding particles such as metal oxide is formed, and the photosensitive resin layer is formed by patterning. There may be.

(Coloring layer) Coloring layers 5, 15, 25, 35
Is formed in the highly hydrophilic portion of the photocatalyst containing layer, the red pattern, the green pattern and the blue pattern are arranged in a desired pattern shape, and comprises a coloring agent such as an inorganic pigment, an organic pigment, and a dye. A layer or a layer containing these coloring agents in a resin binder. As the resin binder, one or a mixture of two or more aqueous resins such as polyacrylamide, polyvinyl alcohol, gelatin, casein, and cellulose can be used.
Also, as the resin binder, an o / w emulsion type resin composition, for example, one obtained by emulsifying reactive silicone can be used. The pattern shape of the red pattern, the green pattern, and the blue pattern constituting the colored layer may be any known arrangement such as a stripe type, a mosaic type, a triangle type, and a four-pixel arrangement type.

(Protective Layer) Protective Layers 6, 16, 26, 36
Is provided to flatten the surface of the color filter and to prevent the coloring layer or components contained in the coloring layer and the photocatalyst from being eluted into the liquid crystal layer. The thickness of this protective layer depends on the light transmittance of the material used,
It can be set in consideration of the surface condition of the color filter and the like, and for example, can be set in the range of 0.1 to 2.0 μm. The protective layer is, for example, a known transparent photosensitive resin,
The transparent protective layer can be formed from a two-component curable transparent resin or the like having a light transmittance required for the transparent protective layer.

The first production example manufacturing color filters Next, an example of producing a color filter of the present invention, the color filter 1 shown in FIG. 1 will be described with reference to FIG. 5 as an example.

(First Step) First, as a first step,
The photocatalyst containing layer 3 as a wettability changing component layer is formed on the transparent substrate 2 (FIG. 5A). This photocatalyst containing layer 3 is formed by dispersing a photocatalyst and a binder as described above in a solvent together with other additives as necessary to prepare a coating solution,
After the application of the coating solution, hydrolysis and polycondensation reactions are allowed to proceed to form a photocatalyst in the binder, thereby forming the photocatalyst. The solvent used is preferably an alcoholic organic solvent such as ethanol or isopropanol, and the coating can be performed by a known coating method such as spin coating, spray coating, dip coating, roll coating, or bead coating.

Next, light is irradiated to the black matrix forming portion of the photocatalyst containing layer 3 to make the light irradiated portion 3 'highly hydrophilic by the action of the photocatalyst, thereby forming a specific wettable portion (FIG. 5). (B)). This light irradiation is performed by a mercury lamp through a photomask for black matrix,
Pattern irradiation using a metal halide lamp, a xenon lamp, or the like may be performed, or drawing irradiation may be performed in a black matrix pattern shape using a laser such as excimer or YAG. The wavelength of light used for this light irradiation is 400 n
m or less, preferably 380 nm or less, and the irradiation amount in light irradiation is such that the light irradiation site 3 ′ is highly hydrophilic (the contact angle with water is 10 ° or less by the action of a photocatalyst). ) Is the irradiation dose necessary to develop

Next, a coating material for a black matrix is adhered onto the light irradiation site 3 'and cured to form a black matrix 4 (FIG. 5C). The adhesion of the black matrix paint onto the light irradiation site 3 'can be performed by applying the paint onto the photocatalyst containing layer 3 by a known coating method such as spray coating, dip coating, roll coating, or bead coating. . In this case, the applied paint is repelled and removed at the non-light-irradiated portion showing high water repellency, and the light-irradiated portion showing high hydrophilicity (specific wettability portion)
It selectively adheres only to 3 '. Further, the adhesion of the black matrix paint onto the light irradiation site 3 'may be performed by a nozzle discharge method such as an inkjet method. In this case, the black matrix paint supplied into the light-irradiated portion 3 'by nozzle discharge uniformly diffuses and adheres to the highly-irradiated light-irradiated portion 3', and the non-light-irradiated material exhibits high water repellency. It does not spread to the site. Further, even if the paint supplied by the nozzle discharge protrudes from the light irradiation part 3 ', it is repelled by the non-light irradiation part showing high water repellency and adheres to the inside of the light irradiation part 3'.

Further, the black matrix 4 may be formed by a vacuum thin film forming method. That is, a metal thin film is formed on the photocatalyst-containing layer 3 after light irradiation by a vapor deposition method or the like, and separation using an adhesive tape is performed by using a difference in adhesive strength between the non-light-irradiated portion and the light-irradiated portion 3 ′. The black matrix 4 can be formed by patterning by processing or the like.

(Second Step) Next, the portion where the red pattern 5R is formed on the photocatalyst-containing layer 3 is irradiated with light, and the light-irradiated portion 3 'is made highly hydrophilic by the action of the photocatalyst. A wettability site is formed (FIG. 5D). This light irradiation may be any of pattern irradiation and optical drawing irradiation, as in the above-described black matrix forming step (first step). Next, a paint for a red pattern is supplied to the photocatalyst containing layer 3. The supply of the paint may be any of an application method, a nozzle discharge method such as an inkjet method, a vacuum thin film formation method, and the like, similarly to the above-described black matrix forming step (second step). The supplied paint is
The black matrix 4 and the non-light-irradiated portions exhibiting high water repellency are repelled and removed, and selectively adhere to only the light-irradiated portions 3 'exhibiting high hydrophilicity. Then, the red pattern paint adhered on the light irradiation site 3 'is cured to form a red pattern 5R (FIG. 5E). In the case where the red pattern 5R is formed by a vacuum thin film forming method, a paint thin film for the red pattern is formed on the photocatalyst containing layer 3 after light irradiation by a vapor deposition method or the like, and the non-light irradiated portion and the light irradiated portion 3 'are formed.
The red pattern 5R is formed by patterning by peeling using an adhesive tape, solvent treatment, or the like, utilizing the difference in the adhesive force of the above.

The same operation as that for forming the red pattern is repeated to form a green pattern 5G and a blue pattern 5B, to form a colored layer 5 composed of a red pattern, a green pattern, and a blue pattern. By forming the protective layer 6, the color filter 1 shown in FIG. 1 is obtained (FIG. 5F). It is to be noted that, in the case where the nozzle discharge method is used in the second step, a pattern (pixel) of each color is used.
Is surrounded by the black matrix 4, the entire surface of the photocatalyst-containing layer 3 on which the black matrix 4 is formed in the first step is irradiated with light to be made highly hydrophilic by the action of the photocatalyst. The colored pattern paint may be supplied to each of the pattern forming portions to diffuse and adhere uniformly, and then a curing process may be performed to form a colored layer. When an organic polymer resin layer is used as the wettability changing component layer, light irradiation is performed using ultraviolet light containing a large amount of low wavelength components of 250 nm or less.

Second Production Example Next, another production example of the color filter of the present invention will be described.
This will be described with reference to FIG. 6 taking the color filter 11 shown in FIG. 2 as an example.

(First Step) First, as a first step,
Transparent substrate 1 on which black matrix 14 has been formed in advance
The photocatalyst-containing layer 13 is formed on the substrate 2 (FIG. 6A). The formation of the photocatalyst containing layer 13 can be performed in the same manner as the formation of the photocatalyst containing layer in the first embodiment described above.
Next, a portion where the red pattern is formed on the photocatalyst-containing layer 13 is irradiated with light, and the light-irradiated portion 13 'is made highly hydrophilic by the action of the photocatalyst, thereby forming a specific wettable portion (FIG. 6 (B)). )). This light irradiation may be any of pattern irradiation and optical drawing irradiation, as in the black matrix forming step (first step) in the first embodiment described above.

(Second Step) Next, a paint for a red pattern is supplied to the photocatalyst containing layer 13. The supply of this paint is
As in the black matrix forming step (second step) in the first embodiment, any of a coating method, a nozzle discharge method such as an inkjet method, a vacuum thin film forming method, and the like may be used. The supplied paint is repelled and removed at the non-light-irradiated portions exhibiting high water repellency, and selectively adheres only to the light-irradiated portions 13 'exhibiting high hydrophilicity. Then, the red pattern paint adhered on the light irradiation site 13 'is cured to form a red pattern 15R (FIG. 6C).
By repeating the same operation as the above-described red pattern formation, a green pattern 15G and a blue pattern 15B are formed, a colored layer 15 composed of a red pattern, a green pattern, and a blue pattern is formed. Is obtained, the color filter 11 shown in FIG. 2 is obtained (FIG. 6D).

In the case where the nozzle discharge method is used in the second step and the black matrix 14 is formed so as to surround the pattern (pixel) of each color, the black matrix 14 is covered in the first step. The entire surface of the photocatalyst containing layer 13 formed on the transparent substrate 12 as shown in FIG.
Light is radiated through a mask M having a light-shielding pattern (shown by oblique lines in FIG. 7) having a line width (w) smaller than the line width (W) to make the surface highly hydrophilic by the action of a photocatalyst. The colored pattern paint may be supplied to each of the pattern forming portions to diffuse and adhere uniformly, and then a curing process may be performed to form a colored layer. When an organic polymer resin layer is used as the wettability changing component layer, light irradiation is performed using ultraviolet light containing a large amount of low wavelength components of 250 nm or less.

Third Production Example Next, another production example of the color filter of the present invention will be described.
This will be described with reference to FIG. 8 using the color filter 21 shown in FIG. 3 as an example. First, the black matrix 24
The first photocatalyst containing layer 23 is formed on the transparent substrate 22 on which is formed
is formed, a light-irradiated portion is formed on the photocatalyst-containing layer 23a by forming a red pattern on the photocatalyst-containing layer 23a, and the light-irradiated portion 23'a is made highly hydrophilic by the action of the photocatalyst, thereby forming a specific wettable portion. (FIG. 8A). The formation of the first photocatalyst containing layer 23a can be performed in the same manner as the formation of the photocatalyst containing layer 3 in the above-described first embodiment. Also, the first
The light irradiation on the photocatalyst containing layer 23a may be any of pattern irradiation and light drawing irradiation, as in the black matrix forming step (first step) in the above-described first embodiment. Next, a paint for a red pattern is supplied to the first photocatalyst containing layer 23a. The supply of the paint may be performed by any of a coating method, a nozzle discharge method such as an inkjet method, a vacuum thin film forming method, and the like, similarly to the black matrix forming step (first step) in the first embodiment. Good. The supplied paint is repelled and removed at the non-light-irradiated portion showing high water repellency, and selectively adheres only to the light-irradiated portion 23'a showing high hydrophilicity. Then, the red pattern paint adhered on the light irradiation site 23'a is cured to form a red pattern 25R (FIG. 8B).
As a result, a laminate of the first photocatalyst containing layer 23a and the red pattern 25R formed on the light irradiation portion (highly hydrophilic portion) 23'a of the photocatalyst containing layer 23a is formed on the transparent substrate 22. You.

In the same manner as in the formation of the red pattern, a second photocatalyst containing layer 23b is formed.
Light is irradiated to the formation portion of the upper green pattern 25G to make the light irradiation portion 23'b highly hydrophilic by the action of a photocatalyst, thereby forming a specific wettability portion (FIG. 8).
(C)) The paint for the green pattern is applied to the light-irradiated portion 23'b.
The green pattern 25G is formed by being adhered on the upper surface and cured (FIG. 8D). Thereby, the second photocatalyst containing layer 23
A laminate of b and the green pattern 25G formed on the light-irradiated portion (highly hydrophilic portion) 23'b of the photocatalyst containing layer 23b is formed on the transparent substrate 22.

By repeating the same operation, the third photocatalyst-containing layer 23c and the blue pattern 2 formed on the light-irradiated portion (highly hydrophilic portion) 23'c of this photocatalyst-containing layer 23c are formed.
A laminate with 5G is formed on the transparent substrate 22. Thus, a colored layer 25 composed of a red pattern, a green pattern, and a blue pattern is formed, and the protective layer 2 is formed on the colored layer 25.
By forming 6, the color filter 21 shown in FIG. 3 is obtained (FIG. 8E). When an organic polymer resin layer is used as the wettability changing component layer, light irradiation is performed using ultraviolet light containing a large amount of low wavelength components of 250 nm or less.

Fourth Manufacturing Example Next, a fourth embodiment of the color filter manufacturing method of the present invention will be described with reference to FIG. 9 taking the color filter 31 shown in FIG. 4 as an example.

(First Step) First, as a first step,
Forming a first photocatalyst containing layer 33a on a transparent substrate 32,
By irradiating light to the black matrix forming portion on the photocatalyst containing layer 33a and making the light irradiating portion 33'a highly hydrophilic by the action of a photocatalyst, a specific wettable portion is formed (FIG. 9A )). The formation of the first photocatalyst containing layer 33a can be performed in the same manner as the formation of the photocatalyst containing layer 3 in the above-described first embodiment. Also, the first
The light irradiation on the photocatalyst containing layer 33a may be either pattern irradiation or light drawing irradiation, as in the black matrix forming step (second step) in the first embodiment described above. Next, a black matrix paint is applied on the light-irradiated portion 33'a and cured to form a black matrix 34 (FIG. 9B). Light irradiation part 3
The coating of the black matrix paint on 3'a is performed in the same manner as the black matrix forming step (first step) in the first embodiment described above, such as a coating method, a nozzle discharge method such as ink jet, and a vacuum thin film formation. Any method may be used.

(Second Step) A second photocatalyst containing layer 33b is formed on the first photocatalyst containing layer 33a so as to cover the black matrix 34 formed in the first step. Light irradiation is performed on the portion where the red pattern is formed, and the light irradiation portion 33'b is made highly hydrophilic by the action of a photocatalyst, thereby forming a specific wettable portion (FIG. 9C). The formation of the second photocatalyst containing layer 33a is as follows.
It can be performed in the same manner as the formation of the first photocatalyst containing layer 33a described above. The light irradiation on the second photocatalyst containing layer 33b may be any of pattern irradiation and light drawing irradiation similarly to the light irradiation on the first photocatalyst containing layer 33a. Next, the paint for the red pattern is supplied to the second photocatalyst containing layer 33b. The supply of this paint is based on the first
Similarly to the black matrix forming step (second step) in the embodiment, any of a coating method, a nozzle discharge method such as inkjet, a vacuum thin film forming method, and the like may be used. The supplied paint was Black Matrix 3
4 and the non-light-irradiated portion exhibiting high water repellency is repelled and removed, and selectively adheres only to the light-irradiated portion 33'b exhibiting high hydrophilicity. Then, the red pattern paint adhered on the light irradiation site 33'b is cured to form a red pattern 35R.
Is formed (FIG. 9D). As a result, the second photocatalyst containing layer 33b and the red pattern 3 formed on the light irradiation portion (highly hydrophilic portion) 33'b of the photocatalyst containing layer 33b are formed.
A laminate with 5R is formed on the first photocatalyst containing layer 33a.

By repeating the same operation, a laminate of the third photocatalyst containing layer 33c and the green pattern 35G formed on the light-irradiated portion (highly hydrophilic portion) 33'c of this photocatalyst containing layer 33c is obtained. The fourth photocatalyst containing layer 33d is formed on the first photocatalyst containing layer 33a, and a light irradiation portion (highly hydrophilic portion) 33 'of the photocatalyst containing layer 33d is formed.
A laminate with the blue pattern 35B formed in d is formed on the first photocatalyst containing layer 33a. Thereby, the colored layer 3 composed of the red pattern, the green pattern, and the blue pattern
5 and the protective layer 36 is formed on the colored layer 35, whereby the color filter 31 shown in FIG. 4 is obtained (FIG. 9E).

As described above, according to the present invention, the paint for the black matrix and the paint for the colored layer can be selectively adhered only to the portions where the black matrix and the colored layer are to be formed, so that the use efficiency of the paint is extremely high. It will be. When an organic polymer resin layer is used as the wettability changing component layer, light irradiation is performed using ultraviolet light containing a large amount of low wavelength components of 250 nm or less. The number of colors, the formation positions, and the like of the color layers described as the embodiments of the above-described color filter and the method for manufacturing the color filter are examples, and the present invention is not limited thereto.

[0054]

Next, the present invention will be described in more detail with reference to examples. First, an example in which a photocatalyst-containing layer is used as a wettability changing component layer will be described.

Example 1 Preparation of Coating Solution for Photocatalyst-Containing Layer First, a coating solution for a photocatalyst-containing layer having the following composition was prepared. (Composition of coating solution for photocatalyst containing layer) Photocatalyst containing composition (ST-K01 manufactured by Ishihara Sangyo Co., Ltd.) 2 parts by weight Organoalkoxysilane 0.4 parts by weight (TSL8113 manufactured by Toshiba Silicone Co., Ltd.) Fluoroalkoxysilane ... 0.3 parts by weight (MF-160E manufactured by Tochem Products Co., Ltd.)-Isopropyl alcohol ... 3 parts by weight

The above coating solution for the photocatalyst-containing layer was coated on a transparent substrate made of soda glass by a spin coater,
After a drying treatment at 0 ° C. for 10 minutes, hydrolysis and polycondensation reaction were allowed to proceed to form a transparent photocatalyst-containing layer (thickness 0.5 μm) in which the photocatalyst was firmly fixed in the organopolysiloxane. This photocatalyst-containing layer was irradiated with a mercury lamp (wavelength 365 nm) at an illuminance of 70 mW / cm ² through a mask through a mask.
Perform pattern irradiation for 0 seconds, and measure the contact angle of water between the irradiated part and the non-irradiated part with a contact angle measuring device (Kyowa Interface Science Co., Ltd.)
As a result of measurement using a CA-Z type (30 seconds after dropping a water drop from the microsyringe), the contact angle of water at the non-irradiated part was 142 °, whereas the contact angle of water at the irradiated part was 142 °. Was 10 ° or less, and the irradiated portion became a highly hydrophilic portion, and it was confirmed that pattern formation was possible due to the difference in wettability between the irradiated portion and the non-irradiated portion.

Formation of Black Matrix Next, a photocatalyst-containing layer was formed on a transparent substrate in the same manner as described above. (Corresponding to FIG. 5A) The photocatalyst-containing layer was irradiated with a mercury lamp (wavelength 365 nm) (70 mW / cm ² ) through a black matrix mask provided with a matrix-shaped opening pattern (opening line width 30 μm). Irradiation was performed for 50 seconds) to make the irradiated portion highly hydrophilic (10 ° or less in terms of water contact angle). (Corresponding to FIG. 5 (B))

On the other hand, a mixture having the following composition was dissolved by heating to 90 ° C., centrifuged at 12,000 rpm, and then filtered through a 1 μm glass filter. 1% by weight of ammonium bichromate was added as a crosslinking agent to the obtained aqueous colored resin solution to prepare a coating liquid for a black matrix. (Composition of black matrix coating solution) ・ Carbon black (# 950, manufactured by Mitsubishi Chemical Corporation): 4 parts by weight ・ Polyvinyl alcohol: 0.7 parts by weight (Gohsenol AH-26, manufactured by Nippon Synthetic Chemical Co., Ltd.) ・ Ion exchange Water: 95.3 parts by weight

Next, the above coating solution for black matrix was applied over the entire surface of the photocatalyst-containing layer by a blade coater. The coating liquid for a black matrix applied in this manner was repelled in the non-irradiated portion of the photocatalyst-containing layer, and selectively adhered only to the irradiated portion. Thereafter, drying is performed at 60 ° C. for 3 minutes, and the coating liquid for a black matrix is cured by exposure with a mercury lamp.
A heat treatment was performed for 30 minutes to form a black matrix. (Corresponding to FIG. 5 (C))

Formation of Colored Layer First, a mixture of each of the following compositions was kneaded and dispersed with three rolls, and then centrifuged at 12,000 rpm.
The mixture was filtered through a μm glass filter. To the obtained aqueous colored resin solution, 1 part of ammonium bichromate was used as a crosslinking agent.
The coating liquid for a red pattern, the coating liquid for a green pattern, and the coating liquid for a blue pattern were prepared by adding wt%. (Composition of coating liquid for red pattern) C.I. I. Pigment Red 168: 1 part by weight-5% by weight aqueous solution of polyvinyl alcohol: 10 parts by weight (average degree of polymerization of polyvinyl alcohol: 1750, degree of saponification: 88 mol%) (Composition of coating liquid for green pattern) I. Pigment Green 36 1 part by weight ・ 5% by weight aqueous solution of polyvinyl alcohol 10 parts by weight (average degree of polymerization of polyvinyl alcohol 1750, saponification degree 88 mol%) (Composition of coating solution for blue pattern) I. Pigment Blue 60 1 part by weight ・ 5% by weight aqueous solution of polyvinyl alcohol 10 parts by weight (average degree of polymerization of polyvinyl alcohol 1750, degree of saponification 88 mol%)

Next, in the red pattern forming region of the photocatalyst containing layer on which the black matrix was formed as described above,
Irradiation (50 msec at an illuminance of 70 mW / cm ² ) with a mercury lamp (wavelength 365 nm) through a mask provided with an opening pattern for forming a colored layer of 150 μm × 300 μm to make the irradiated portion highly hydrophilic (contact angle of water) Converted to 10 ° or less)
And (Corresponding to FIG. 5 (D)) Next, the above-mentioned coating liquid for a red pattern was applied over the entire surface of the photocatalyst-containing layer by a blade coater. The coating liquid for red pattern applied in this manner was repelled in the non-irradiated portion of the photocatalyst-containing layer, and selectively adhered only to the irradiated portion. Thereafter, drying was performed at 60 ° C. for 3 minutes, and the coating liquid for red pattern was cured by exposing with a mercury lamp, and further subjected to heat treatment at 150 ° C. for 30 minutes to form a red pattern. (Equivalent to FIG. 5 (E))

Similarly, the green pattern forming area of the photocatalyst-containing layer is irradiated with light, and a green pattern coating solution is applied and selectively adhered only to the irradiated area.
A heat treatment is performed to form a green pattern, and further, a blue pattern forming region of the photocatalyst containing layer is irradiated with light, and a blue pattern coating liquid is applied and selectively adhered only to an irradiated portion, and then cured. Then, a heat treatment was performed to form a blue pattern. Next, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) is applied as a protective layer on the colored layer by a spin coater, and cured at 200 ° C. for 30 minutes to form a protective layer. A color filter of the present invention having a configuration as shown in FIG. 1 was manufactured. (Corresponding to FIG. 5 (F))

Example 2 Preparation of Coating Solution for Photocatalyst-Containing Layer First, a coating solution for a photocatalyst-containing layer having the following composition was prepared. (Composition of coating solution for photocatalyst containing layer)-Photocatalyst containing composition (STS-01, manufactured by Ishihara Sangyo Co., Ltd.): 1 part by weight-Reactive silicone: 0.76 parts by weight (KM-, manufactured by Shin-Etsu Chemical Co., Ltd.) 768) Catalyst: 0.02 parts by weight (CAT-PM6A / CAT-PM6B = 4: 6 manufactured by Shin-Etsu Chemical Co., Ltd.) Water: 1.34 parts by weight

The above-mentioned coating solution for the photocatalyst-containing layer was applied on a transparent substrate made of soda lime glass by a spin coater and heated at 160 ° C. for 1 minute to obtain a transparent solution in which the photocatalyst was firmly fixed in the organopolysiloxane. A photocatalyst containing layer (thickness 0.5 μm) was formed. 70 mW by a mercury lamp (wavelength 365 nm) through the photocatalyst containing layer through a mask.
The pattern irradiation was performed at an illuminance of / cm ² for 100 seconds, and the contact angle of water between the irradiated part and the non-irradiated part was measured in the same manner as in Example 1. As a result, the contact angle of water at the non-irradiated part was 1
In contrast to 15 °, the contact angle of water at the irradiated part is 10 ° or less, the irradiated part becomes a highly hydrophilic part, and a pattern can be formed due to the difference in wettability between the irradiated part and the non-irradiated part. Was confirmed.

Formation of Black Matrix Next, a photocatalyst-containing layer was formed in the same manner as described above, and the black matrix formation region of the photocatalyst-containing layer was irradiated with light (a mercury lamp (wavelength 365 nm) at an illuminance of 70 mW / cm ² for 100 seconds) Irradiation), a coating liquid for black matrix was applied and selectively adhered only to the irradiated area, and then subjected to a heat treatment to form a black matrix. (Corresponding to FIGS. 5A to 5C)

Formation of Colored Layer Next, Pigment Red 168, Pigment Green 36, and Pigment Blue 60 are prepared as pigments of each color.
A coating solution for each colored pattern having the following composition was prepared. (Composition of coating liquid for coloring pattern) ・ Pigment: 3 parts by weight ・ Nonionic surfactant: 0.05 parts by weight (NIKKOL BO-10TX manufactured by Nikko Chemicals Co., Ltd.) ・ Polyvinyl alcohol ... 0.6 parts by weight (Shin-Etsu Shin-Etsu Poval AT manufactured by Chemical Industry Co., Ltd. ・ Water: 97 parts by weight

Next, a mercury lamp (wavelength: 36) was formed on the entire surface of the photocatalyst-containing layer on which the black matrix was formed as described above.
5 nm) (100 mW / cm ² illuminance).
(Seconds) to make the irradiated site highly hydrophilic (10 ° or less in terms of water contact angle). Next, the above-mentioned coating liquid for a red pattern was dropped at a dot diameter of 120 μm from a nozzle to the center of each red pattern forming region surrounded by a black matrix. Similarly, a coating liquid for a green pattern was dropped from a nozzle at a dot diameter of 120 μm to the center of each green pattern forming region surrounded by a black matrix. Further, a blue pattern coating liquid was dropped at a dot diameter of 120 μm from a nozzle to the center of each blue pattern forming region surrounded by a black matrix. The coating liquid for each color pattern thus dropped is repelled by the black matrix,
In the pattern forming region of each color, which is a highly hydrophilic portion surrounded by a black matrix, the dye was uniformly diffused and selectively adhered. Thereafter, a heat treatment was performed at 100 ° C. for 45 minutes to form a colored layer including a red pattern, a green pattern, and a blue pattern. Next, as a protective layer, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) is applied on the colored layer by a spin coater, and cured at 200 ° C. for 30 minutes to form a protective layer. Then, a color filter of the present invention having a configuration as shown in FIG. 1 was manufactured.

Example 3 Formation of Photocatalyst-Containing Layer The same photocatalyst-containing layer as in Example 1 was formed on a transparent substrate made of soda glass having a black matrix composed of a chromium thin film pattern having openings of 90 μm × 300 μm and a line width of 30 μm. Application liquid by a spin coater, 150
After a drying treatment at 10 ° C. for 10 minutes, hydrolysis and polycondensation were allowed to proceed to form a transparent photocatalyst-containing layer (thickness 0.5 μm) in which the photocatalyst was firmly fixed in the organopolysiloxane. (Corresponding to FIG. 6 (A))

Formation of Colored Layer Next, the photocatalyst-containing layer was irradiated with a mercury lamp (wavelength 365 nm) (70 mW) through a red pattern mask.
/ Cm ² for 50 seconds) to make the irradiated area highly hydrophilic (10 ° or less in terms of water contact angle). (FIG. 6
On the other hand, 1 g of C.I. I. Pigment Red 168 is prepared by diluting an aqueous emulsion silicone (K-768, manufactured by Shin-Etsu Chemical Co., Ltd.) three times with water.
g of the resulting mixture, and the resulting mixture is ground and dispersed with three rolls, and then centrifuged at 12,000 rpm.
The mixture was filtered through a μm glass filter. CatalystPM-6A: Catalyst was added to the resulting aqueous colored resin solution as a curing catalyst.
0.1 g of PM-6B = 4: 6 (manufactured by Shin-Etsu Chemical Co., Ltd.) was added to prepare a coating liquid (thermosetting resin composition) for a red pattern.

Next, the above-mentioned coating solution for red pattern was applied on the entire surface of the photocatalyst-containing layer by a bar coater. The applied coating liquid for red pattern was repelled in the non-irradiated portion of the photocatalyst-containing layer, and selectively adhered only to the irradiated portion. Thereafter, a curing process was performed at 160 ° C. for 30 seconds to form a red pattern. (Corresponding to FIG. 6C) Next, the photocatalyst-containing layer on which the red pattern was formed as described above was irradiated with a mercury lamp (wavelength 365 nm) through a blue pattern mask (at an illuminance of 70 mW / cm ² ). 5
(0 seconds) to make the irradiated site highly hydrophilic (10 ° or less in terms of water contact angle).

On the other hand, 1 g of C.I. I. Pigment Blue 6
0 is an aqueous solution obtained by diluting an aqueous emulsion silicone (K-768, manufactured by Shin-Etsu Chemical Co., Ltd.) three times with water.
g, and a coating solution (thermosetting resin composition) for a blue pattern was prepared in the same manner as the coating solution for the red pattern. Next, the above-mentioned blue pattern coating solution was applied over the entire surface of the photocatalyst-containing layer by a bar coater. The applied blue pattern coating liquid was repelled in the red pattern forming portion and the non-irradiated portion of the photocatalyst-containing layer, and selectively adhered only to the irradiated portion. Thereafter, a curing process was performed at 160 ° C. for 30 seconds to form a blue pattern. Further, the photocatalyst-containing layer on which the red pattern and the blue pattern are formed as described above is irradiated with a mercury lamp (wavelength 365 nm) through a mask for a green pattern (at an illuminance of 70 mW / cm ² for 50 seconds). The site was made highly hydrophilic (10 ° or less in terms of water contact angle).

On the other hand, 1 g of Lionol Green 2Y-3
01 (manufactured by Toyo Ink Mfg. Co., Ltd.) in polyvinyl alcohol (average degree of polymerization 1750, saponification degree 88 mol%)
The mixture was mixed with 10 g of a 0% by weight aqueous solution, and the resulting mixture was dispersed in a three-roll mill, followed by centrifugation at 12,000 rpm, followed by filtration through a 1 μm glass filter. To the obtained aqueous colored resin solution, 1% by weight of ammonium bichromate was added as a crosslinking agent to prepare a coating solution (photosensitive resin composition) for a green pattern.

Next, the above-mentioned coating solution for a green pattern was coated on the entire surface of the photocatalyst-containing layer by a bar coater. The applied green pattern coating solution was repelled by the red pattern forming portion, the blue pattern forming portion, and the non-irradiated portion of the photocatalyst-containing layer, and selectively adhered only to the irradiated portion. Then 60
The coating solution for green pattern was cured by exposing to light at 3 ° C. for 3 minutes and exposing with a mercury lamp, and the photocatalyst-containing layer was made highly hydrophilic. Then, at 150 ° C., 30
A green pattern was formed by performing a heat treatment for 5 minutes. Next, as a protective layer, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) is applied on the colored layer by a spin coater, and cured at 200 ° C. for 30 minutes to form a protective layer. Then, a color filter of the present invention having a configuration as shown in FIG. 2 was manufactured.

Example 4 Formation of Photocatalyst-Containing Layer The same photocatalyst-containing layer as in Example 1 was formed on a transparent substrate made of soda glass having a black matrix composed of a chromium thin film pattern having openings of 140 μm × 260 μm and a line width of 30 μm. Application liquid by a spin coater, 150
After a drying treatment at 10 ° C. for 10 minutes, hydrolysis and polycondensation were allowed to proceed to form a transparent photocatalyst-containing layer (thickness 0.5 μm) in which the photocatalyst was firmly fixed in the organopolysiloxane. (Corresponding to FIG. 6 (A))

Formation of Colored Layer Next, a mask having a light-shielding pattern (pattern pitch: 155 μm × 275 μm) having a line width (20 μm) smaller than the line width (30 μm) of the black matrix is aligned on the black matrix. The photocatalyst-containing layer is irradiated with a mercury lamp (wavelength 365 nm) through this mask (at an illuminance of 70 mW / cm ² for 50 seconds) to make the irradiated area highly hydrophilic (10 ° or less in terms of water contact angle). did. (See FIG. 7) Each irradiation site (highly hydrophilic site) has a size of 150 μm × 270 μm, and the non-irradiation site exists on the black matrix with a width of 20 μm.

Next, pigment red 168, pigment green 36, pigment blue 6
0 was prepared, and a coating solution for each colored pattern having the following composition was prepared. (Composition of coating liquid for coloring pattern) ・ Pigment: 3 parts by weight ・ Nonionic surfactant: 0.05 parts by weight (NIKKOL BO-10TX manufactured by Nikko Chemicals Co., Ltd.) ・ Polyvinyl alcohol ... 0.6 parts by weight (Shin-Etsu Shin-Etsu Poval AT manufactured by Chemical Industry Co., Ltd. ・ Water: 97 parts by weight

Next, the above-mentioned red pattern coating solution was dropped at a dot diameter of 120 μm from a nozzle to the center of each red pattern forming region surrounded by a black matrix. Similarly, a coating liquid for a green pattern was dropped from a nozzle at a dot diameter of 120 μm to the center of each green pattern forming region surrounded by a black matrix. Furthermore, a dot diameter of 120 μm was applied to the center of each blue pattern forming region surrounded by the black matrix from the nozzle by applying the blue pattern coating solution.
Was dropped. The coating liquid for each colored pattern thus dropped is repelled at the non-irradiated portion on the black matrix, and is uniformly diffused and selected within the pattern forming region of each color, which is a highly hydrophilic portion surrounded by the black matrix. Attached. Thereafter, a heat treatment was performed at 100 ° C. for 45 minutes to form a colored layer including a red pattern, a green pattern, and a blue pattern. Next, as a protective layer, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) is applied on the colored layer by a spin coater, and cured at 200 ° C. for 30 minutes to form a protective layer. Then, a color filter of the present invention having a configuration as shown in FIG. 2 was manufactured.

Example 5 Formation of Photocatalyst-Containing Layer The same photocatalyst-containing layer as in Example 1 was formed on a transparent substrate made of soda glass having a black matrix composed of a chromium thin film pattern having an opening of 90 μm × 300 μm and a line width of 30 μm. Application liquid by a spin coater, 150
After a drying treatment at 10 ° C. for 10 minutes, hydrolysis and polycondensation were allowed to proceed to form a transparent photocatalyst-containing layer (thickness 0.5 μm) in which the photocatalyst was firmly fixed in the organopolysiloxane.

Formation of Colored Layer First, Pigment Red 168, Pigment Green 36, and Pigment Blue 60 are prepared as pigments of each color.
After mixing and dispersing the mixture of the following compositions with three rolls,
Centrifugation was performed at 12000 rpm, and then filtration was performed with a 1 μm glass filter. 1% by weight of ammonium bichromate as a crosslinking agent was added to the obtained aqueous colored resin solution.
In addition, a coating liquid for a red pattern, a coating liquid for a green pattern, and a coating liquid (a photosensitive resin composition) for a blue pattern were prepared. (Composition of mixture) ・ Pigment 1 part by weight ・ Polyvinyl alcohol 10% by weight aqueous solution 10 parts by weight (average degree of polymerization of polyvinyl alcohol 1750, degree of saponification 88 mol%)

Next, a photocatalyst-containing layer was formed on the photocatalyst-containing layer on which the black matrix was formed as described above in the same manner as in Example 1, and this photocatalyst-containing layer was placed on a mercury lamp through a red pattern mask. (Wavelength 365 nm) (at an illuminance of 70 mW / cm ² for 50 seconds) to make the irradiated area highly hydrophilic (10 ° or less in terms of water contact angle). (Corresponding to FIG. 8 (A)) Next, the above-mentioned coating liquid for a red pattern was applied on the entire surface of the photocatalyst-containing layer by a bar coater. The applied coating liquid for the red pattern is repelled in the non-irradiated portion of the photocatalyst containing layer,
It selectively adhered only to the irradiated site. Then, at 60 ° C, 3
By drying for a minute and exposing with a mercury lamp,
The coating liquid for red pattern is cured,
A heat treatment for 30 minutes was performed to form a red pattern.
(Corresponding to FIG. 8 (B))

Similarly, a photocatalyst-containing layer was formed on the photocatalyst-containing layer on which the red pattern was formed as described above in the same manner as in Example 1, and the green pattern formation region of the photocatalyst-containing layer was irradiated with light. This was performed (corresponding to FIG. 8 (C)), and after applying a green pattern coating liquid and selectively attaching it only to the light irradiation site, a curing process and a heating process were performed to form a green pattern. (Corresponding to FIG. 8 (D))

Further, a photocatalyst-containing layer was formed on the photocatalyst-containing layer on which the green pattern was formed in the same manner as in Example 1, and the blue pattern-forming region of the photocatalyst-containing layer was irradiated with light to form a blue pattern. After the solution was applied and selectively adhered only to the light irradiation site, a curing process and a heating process were performed to form a blue pattern. Next, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) as a protective layer
Is applied on the coloring layer with a spin coater,
A hardening treatment was performed for 0 minutes to form a protective layer, and a color filter of the present invention having a configuration as shown in FIG. 3 was manufactured.
(Equivalent to FIG. 8 (E))

(Example 6) Formation of Black Matrix First, a photocatalyst containing layer was formed in the same manner as in Example 1, and the black matrix forming region of the photocatalyst containing layer was irradiated with light to apply a black matrix coating solution. After that, the film was selectively adhered to the irradiated portion, and then subjected to a heat treatment to form a black matrix. (Corresponding to FIGS. 9A and 9B)

Formation of Colored Layer First, Pigment Red 168, Pigment Green 36, and Pigment Blue 60 were prepared as pigments of each color.
After mixing and dispersing the mixture of the following compositions with three rolls,
Centrifugation was performed at 12000 rpm, and then filtration was performed with a 1 μm glass filter. 1% by weight of ammonium bichromate as a crosslinking agent was added to the obtained aqueous colored resin solution.
In addition, a coating liquid for a red pattern, a coating liquid for a green pattern, and a coating liquid (a photosensitive resin composition) for a blue pattern were prepared. (Composition of mixture) ・ Pigment 1 part by weight ・ Polyvinyl alcohol 10% by weight aqueous solution 10 parts by weight (average degree of polymerization of polyvinyl alcohol 1750, degree of saponification 88 mol%)

Next, a photocatalyst-containing layer was formed on the photocatalyst-containing layer on which the black matrix had been formed as described above in the same manner as in Example 1, and this photocatalyst-containing layer was placed on a mercury lamp through a red pattern mask. (Wavelength 365 nm) (at an illuminance of 70 mW / cm ² for 50 seconds) to make the irradiated area highly hydrophilic (10 ° or less in terms of water contact angle). (Corresponding to FIG. 9 (C)) Next, the above-mentioned coating solution for red pattern was applied on the entire surface of the photocatalyst-containing layer by a bar coater. The applied coating liquid for the red pattern is repelled in the non-irradiated portion of the photocatalyst containing layer,
It selectively adhered only to the irradiated site. Then, at 60 ° C, 3
By drying for a minute and exposing with a mercury lamp,
The coating liquid for red pattern is cured,
A heat treatment for 30 minutes was performed to form a red pattern.
(Corresponding to FIG. 9 (D))

Similarly, a photocatalyst-containing layer was formed on the photocatalyst-containing layer on which the red pattern was formed as described above in the same manner as in Example 1, and the green pattern forming region of the photocatalyst-containing layer was irradiated with light. Performing, after applying a green pattern coating solution and selectively attaching only to the light irradiation site, a curing process, a heating process is performed to form a green pattern, and further,
Example 1 was formed on the photocatalyst-containing layer on which the green pattern was formed.
A photocatalyst-containing layer is formed in the same manner as described above, and the blue pattern-forming region of the photocatalyst-containing layer is irradiated with light, and a blue pattern coating solution is applied to selectively adhere only to the light-irradiated portions, followed by a curing treatment. Then, a heat treatment was performed to form a blue pattern. Next, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) is applied as a protective layer on the colored layer by a spin coater, and cured at 200 ° C. for 30 minutes to form a protective layer. A color filter of the present invention having a configuration as shown in FIG. 4 was manufactured. (Equivalent to FIG. 9 (E))

(Example 7) Formation of Black Matrix First, a photocatalyst containing layer was formed in the same manner as in Example 1, and the black matrix forming region of the photocatalyst containing layer was irradiated with light to apply a black matrix coating solution. After that, the film was selectively adhered to the irradiated portion, and then subjected to a heat treatment to form a black matrix.

Formation of Colored Layer On the photocatalyst-containing layer on which the black matrix was formed as described above, a photocatalyst-containing layer was formed in the same manner as in Example 1, and this photocatalyst-containing layer was formed into an opening (23 μm × 12 μm).
In the rectangular illumination of irradiation (70 mW / cm ² using a mercury lamp through a mask having an opening) (Wavelength 365 nm) 9
(0 seconds) to make the irradiated site highly hydrophilic (10 ° or less in terms of water contact angle).

Next, a perylene pigment represented by the following structural formula was deposited on the photocatalyst-containing layer at a degree of vacuum of 1 × 10 ⁻⁵ Torr and a deposition rate of 10 ° / sec by a vacuum deposition method. A red pigment thin film was formed on the entire surface of the photocatalyst-containing layer. Next, when the surface of the red pigment thin film was rinsed with acetone, the difference in the adhesiveness of the red pigment between the light-irradiated portion and the non-irradiated portion of the photocatalyst-containing layer caused the red pigment thin film to peel off only at the non-irradiated portion, and Is 23 μm × 1
A red pattern consisting of a 2 μm rectangular red pigment thin film (0.4 μm thickness) was formed.

[0090]

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Example 8 Formation of Black Matrix First, a photocatalyst-containing layer was formed in the same manner as in Example 1, and the black matrix-forming region of the photocatalyst-containing layer was irradiated with light to apply a black matrix coating solution. After that, the film was selectively adhered to the irradiated portion, and then subjected to a heat treatment to form a black matrix.

Formation of Colored Layer On the photocatalyst containing layer on which the black matrix was formed as described above, a photocatalyst containing layer was formed in the same manner as in Example 1, and this photocatalyst containing layer was formed into an opening (23 μm × 12 μm).
In the rectangular illumination of irradiation (70 mW / cm ² using a mercury lamp through a mask having an opening) (Wavelength 365 nm) 9
(0 seconds) to make the irradiated site highly hydrophilic (10 ° or less in terms of water contact angle). Next, a perylene-based pigment represented by the following structural formula was deposited on the photocatalyst-containing layer by a vacuum deposition method at a degree of vacuum of 1 × 10 ⁻⁵ Torr and a deposition rate of 10 ° /.
Vapor deposition was performed under the conditions of seconds to form a blue pigment thin film on the entire surface of the photocatalyst containing layer. Next, when the surface of the blue pigment thin film was washed away with methanol, due to the difference in the adhesiveness of the blue pigment between the light irradiation site and the non-irradiation site of the photocatalyst containing layer,
The blue pigment thin film peels off only at the non-irradiated part, and at the irradiated part,
A rectangular blue pigment thin film of 23 μm × 12 μm (thickness of 0.1 μm).
4 μm) was formed.

[0093]

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(Evaluation) When the color filters produced in Examples 1 to 8 were observed with an optical microscope, no defects such as discoloration, color mixture, white spots, and color unevenness were observed in the black matrix and the colored layer.

[0095]

As described above in detail, according to the present invention, a specific wettability portion has high wettability with respect to the light-shielding layer paint and the colored layer paint, and supplies the light-shielding layer paint and the colored layer paint. By doing so, it selectively adheres only to specific wettable parts, paint that comes in contact with other areas is repelled, so it is possible to form a light-shielding layer and a colored layer with high precision, enabling a high-resolution color filter In addition, since the paint is attached only to the portion where the light-shielding layer or the colored layer is formed, the use efficiency of the material is high, and furthermore, the steps of development and washing, and the step of treating the development waste liquid are unnecessary, so that the steps are simplified. . In addition, by making the wettability changing component layer that forms a specific wettability portion a photocatalyst-containing layer or an organic polymer resin layer, the photoirradiation portion increases the critical surface tension due to the action of the photocatalyst and increases the hydrophilicity (specificity). Wettability), or high hydrophilicity (specific wettability) due to surface roughening due to molecular weight reduction due to polymer chain breakage, while non-irradiated parts maintain high water repellency. By supplying a light-shielding layer coating or a coloring layer coating on such a photocatalyst-containing layer or an organic polymer resin layer, the coating in contact with the non-irradiated part is repelled, and the light-irradiated part with high wettability ( Selectively adheres only to the highly hydrophilic site).

[Brief description of the drawings]

FIG. 1 is a schematic sectional view illustrating an example of an embodiment of a color filter of the present invention.

FIG. 2 is a schematic sectional view showing another example of the embodiment of the color filter of the present invention.

FIG. 3 is a schematic sectional view showing another example of the embodiment of the color filter of the present invention.

FIG. 4 is a schematic sectional view showing another example of the embodiment of the color filter of the present invention.

FIG. 5 is a process chart for explaining a production example of the color filter of the present invention.

FIG. 6 is a process chart for explaining another example of manufacturing the color filter of the present invention.

FIG. 7 is a plan view showing a state of a mask when irradiating the photocatalyst-containing layer with light in the example of manufacturing the color filter shown in FIG. 6;

FIG. 8 is a process chart for explaining another example of manufacturing the color filter of the present invention.

FIG. 9 is a process chart for explaining another example of manufacturing the color filter of the present invention.

[Explanation of symbols]

1, 11, 21, 31 ... color filters 2, 12, 22, 32 ... transparent substrates 3, 13, 23a, 23b, 23c, 33a, 33b,
33c, 33d: Photocatalyst containing layer (wetting property changing component layer) 3 ', 13', 23'a, 23'b, 33'a, 33 '
b: Light irradiation site (highly hydrophilic site = specific wettability site) 4, 14, 24, 34: black matrix 5, 15, 25, 35: colored layer

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hironori Ueyama 1-1-1 Ichigaya-Kagacho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. (reference) 2C056 EA24 FB01 2H048 BA02 BA45 BA55 BA60 BA64 BB02 BB14 BB24 BB37 BB42 2H091 FA02Y FA35Y FB02 FC02 FC12 LA01 LA12 LA15 LA16 4G069 AA02 AA08 BA04A BA04B BA14A BA14B BA22A BA22B BA48A BB04A BB06A BC12A BC22A BC25A BC35A BC50A BC60A BC03A03 EB01 CA03A02 EB03 EB14 EB14 EB04

Claims (10)

[Claims] 1. A transparent substrate, comprising: a plurality of colored layers formed in a predetermined pattern on the transparent substrate; and a light-shielding layer positioned at a boundary between the colored layers. At least one of the light-shielding layers is formed on the transparent substrate through a specific wettability portion of the wettability changing component layer, and the wettability changing component layer is a photocatalyst containing layer comprising at least a binder and a photocatalyst. Wherein the specific wettability site is a highly hydrophilic site. 2. A transparent substrate, a wettability changing component layer provided on the transparent substrate, and a plurality of colors formed in a predetermined pattern on a specific wettability site of the wettability changing component layer. A layer and a light-shielding layer positioned at a boundary between the colored layers, wherein the wettability changing component layer is a photocatalyst-containing layer comprising at least a binder and a photocatalyst, and the specific wettability site is a highly hydrophilic site. A color filter, characterized in that: 3. A transparent substrate having a light-shielding layer in a predetermined pattern, a wettability changing component layer provided on the transparent substrate so as to cover the light-shielding layer, and a specific wetting property of the wettability changing component layer. A colored layer of a plurality of colors formed in a predetermined pattern on the hydrophilic portion, wherein the light-shielding layer is located at a boundary between the colored layers, and the wettability changing component layer contains a photocatalyst comprising at least a binder and a photocatalyst. A color filter, wherein the specific wettability site is a highly hydrophilic site. 4. A transparent substrate having a light shielding layer in a predetermined pattern, a wettability changing component layer and a specific wettability portion of the wettability changing component layer on the transparent substrate so as to cover the light shielding layer. A laminate of a desired number of colors and a laminate with a colored layer formed in a predetermined pattern is provided, and the light-shielding layer is located at the boundary of each colored layer, and the wettability changing component layer has at least a binder and a photocatalyst. Wherein the specific wettability site is a highly hydrophilic site. 5. A transparent substrate, a wettability changing component layer provided on the transparent substrate, a light shielding layer formed in a predetermined pattern on a specific wettability portion of the wettability changing component layer, and On the wettability changing component layer, a laminate of a wettability changing component layer and a colored layer formed in a predetermined pattern on a specific wettability site of the wettability changing component layer to cover the light shielding layer is desired. The light shielding layer is located at the boundary of each colored layer, the wettability changing component layer is a photocatalyst containing layer comprising at least a binder and a photocatalyst, and the specific wettability site is high. A color filter characterized by being a hydrophilic site. 6. The color filter according to claim 1, wherein the binder contains an organopolysiloxane. 7. The color filter according to claim 6, wherein the organopolysiloxane is an organopolysiloxane obtained from a composition containing chloro or alkoxysilane. 8. The color filter according to claim 6, wherein the organopolysiloxane is an organopolysiloxane obtained from a composition containing a reactive silicone. 9. The color filter according to claim 6, wherein the organopolysiloxane contains a fluoroalkyl group. 10. The color filter according to claim 1, wherein the highly hydrophilic portion has a contact angle with water of 10 ° or less.