JPH11337726A - Color filter and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide color filters which have high fineness and are free from defects, such as drop-outs, and a process for producing the color filters which is excellent in using efficiency of the material, does not include developing stage and washing stage and is simple in the stages. SOLUTION: The color filters 1 have a transparent substrate 2, colored layers which are formed in prescribed patterns on the transparent substrate 2 and consist of plural colors and light shielding layers which exist at the boundary parts of the respective colored layers 5. At least one layers of the colored layers 5 and the light shielding layers are formed on the transparent substrate 2 via specific wettable sections of wettability changing component layers. Such color filters 1 are produced by forming the specific wettable sections in the prescribed patterns on the transparent substrate 2 and forming the light shielding layers by adhering a coating material for the light shielding layers on these wettable sections as the first stage, then forming the specific wettable sections in the prescribed patterns on the transparent substrate 2 and forming the colored layers by adhering a coating material for the colored layers on the wettable sections as the second stage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a color filter and a method of manufacturing the same, and more particularly, to a color filter capable of manufacturing a color liquid crystal display device having excellent display quality and a method of manufacturing the same.

[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 through a photomask to dye a formed pattern to form a colored layer, and a photosensitive method formed on the transparent substrate. A pigment dispersion method in which a coloring pigment is dispersed in a conductive resist layer in advance and then exposed and developed through a photomask to form a coloring layer; a printing method of printing a coloring layer of each color with a printing ink on a transparent substrate; a transparent substrate A transparent electrode pattern is formed on the transparent electrode pattern, and an operation of applying electricity to the transparent electrode pattern in an electrode solution of a predetermined color to perform electrodeposition three times, 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.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a color filter which is high-definition and free from defects such as white spots, has excellent material use efficiency, and has a developing step and a cleaning step. An object of the present invention is to provide a method of manufacturing a color filter which does not include a simple process.

[0007]

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 of each colored layer, 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 configuration was such that

[0008] Further, the color filter of the present invention comprises a transparent substrate, a wettability changing component layer provided on the transparent substrate,
A configuration was adopted in which a colored layer of a plurality of colors formed in a predetermined pattern on a specific wettable portion of the wettability changing component layer and a light-shielding layer positioned at a boundary between the colored layers.

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 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 configuration was such that the light-shielding layer was located at the boundary between the colored layers.

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 laminated in a desired number of colors, and the light-shielding layer is positioned at a boundary between the colored layers. .

Further, the color filter of the present invention comprises a transparent substrate, a wettability changing component layer provided on the transparent substrate, and a predetermined pattern formed 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 layered body with the desired number of colors was provided in a stacked manner, and the light-shielding layer was positioned at the boundary between the colored layers.

[0012] The color filter of the present invention is configured so that the specific wettability site is a highly hydrophilic site.

Further, the color filter of the present invention is configured such that the wettability changing component layer is a photocatalyst containing layer comprising at least a binder and a photocatalyst, and the binder is obtained from a composition containing chloro or alkoxysilane. The composition was such that it contained a polysiloxane, or such that the binder contained an organopolysiloxane obtained from a composition containing a reactive silicone.

Further, the color filter of the present invention is configured such that the wettability changing component layer is an organic polymer resin layer.

According to the method of manufacturing a color filter of the present invention, a specific wettable portion is formed in a predetermined pattern on a transparent substrate, and a light-shielding layer paint is adhered to the wettable portion to form a light-shielding layer. A step of forming a specific wettable portion on a transparent substrate in a predetermined pattern on a transparent substrate, and applying a coating material for a colored layer on the wettable portion to form a colored layer. The configuration was adopted.

[0016] In the first step, a photocatalyst-containing layer comprising at least a binder and a photocatalyst is formed on the transparent substrate, and the photocatalyst-containing layer is irradiated with light. By forming a specific wettability site by the above, in the second step, the photocatalyst containing layer is irradiated with light, and the photoirradiation site is made highly hydrophilic by the action of the photocatalyst, thereby forming the specific wettability site Is formed.

The method of manufacturing a color filter according to the present invention includes a first step of forming a specific wettable portion in a predetermined pattern on a transparent substrate provided with a light-shielding layer in a predetermined pattern;
A second step of forming a colored layer by adhering a coating material for a colored layer on the wettable portion.

In the first step, a photocatalyst-containing layer comprising at least a binder and a photocatalyst is formed on a transparent substrate having the light-shielding layer in a predetermined pattern so as to cover the light-shielding layer. Irradiation was performed to make the irradiated portion highly hydrophilic by the action of a photocatalyst to form a specific wettable portion.

Further, the method for manufacturing a color filter of the present invention comprises forming a specific wettable portion in a predetermined pattern on a transparent substrate provided with a light-shielding layer in a predetermined pattern, and forming a colored layer on the wettable portion. The operation of forming a colored layer by applying a paint is repeated for the required number of colors to form a colored layer of a plurality of colors.

Then, a photocatalyst-containing layer comprising at least a binder and a photocatalyst is formed on a transparent substrate provided with the light-shielding layer in a predetermined pattern so as to cover the light-shielding layer, and the photocatalyst-containing layer is irradiated with light. Was made highly hydrophilic by the action of a photocatalyst to form a specific wettability site.

Further, according to the method for producing a color filter of the present invention, a specific wettable portion is formed in a predetermined pattern on a transparent substrate, and a light-shielding layer paint is applied to the wettable portion to form a light-shielding layer. A first step of forming a specific wettable portion on a transparent substrate in a predetermined pattern on a transparent substrate, and applying a coating material for a colored layer on the wettable portion to form a colored layer; And a second step of forming a colored layer having a plurality of colors.

In the first step, a photocatalyst-containing layer comprising at least a binder and a photocatalyst is formed on a transparent substrate, and the photocatalyst-containing layer is irradiated with light. To form a specific wettability site, and in the second step, a photocatalyst containing layer comprising at least a binder and a photocatalyst is formed so as to cover the light shielding layer, and the photocatalyst containing layer is irradiated with light, The irradiation site was made highly hydrophilic by the action of a photocatalyst to form a specific wettability site.

In the method of manufacturing a color filter according to the present invention, the light irradiation on the photocatalyst-containing layer is performed by one of pattern exposure through a mask and light drawing irradiation.

The method for producing a color filter according to the present invention may be arranged such that the coating for the shielding layer and / or the coating for the colored layer is performed by any one of a coating method, a nozzle discharge method, and a vacuum thin film forming method. In the vacuum thin film forming method, after the thin film is formed, a step of removing a thin film made of a coating material for a shielding layer or a coating material for a coloring layer attached to a portion other than a specific wettable portion is adopted.

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, and the above-mentioned specific wettability portion Is formed.

[0026]

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 of the present invention 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 of a plurality of colors; and a protective layer 6 formed to cover the black matrix 4 and the colored layer 5. 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. 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. The photocatalyst-containing layer 13 as a sex-change 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 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 wettability changing component layer and red colored layer 3 formed on a specific wettability site (highly hydrophilic site) 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 structure of the 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 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. (Wettability changing component layer) Also, the color filters 1, 11,
The photocatalyst-containing layers 3, 13, 23, and 33 as the wettability changing component layers constituting the layers 21 and 31 are composed of at least a binder and a photocatalyst. Layer.

The mechanism of action 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 not affected by nearby compounds. By the direct reaction of
It is thought that it changes the chemical structure of organic matter.

By using the action of such a photocatalyst, oily dirt is decomposed by light irradiation and made hydrophilic so that it can be washed with water. 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.

In the present invention, when a photocatalyst-containing layer is used as the wettability changing component layer, the photocatalyst is used to oxidize or decompose an organic group or an additive that is a part of the binder, and to wet the light-irradiated portion. To obtain a color filter by changing the properties to make it highly hydrophilic, causing a large difference in wettability with non-light-irradiated parts, and enhancing the receptivity and repulsion with paint for light-shielding layers and paint for colored layers. It is.

Here, the high hydrophilicity means that the contact angle with water is 2
In the present invention, it is measured by using a contact angle measuring device (CA-Z type manufactured by Kyowa Interface Science Co., Ltd.) 30 seconds after a water droplet is dropped from the micro syringe.

The photocatalyst used in the present invention includes titanium oxide (TiO ₂ ) and zinc oxide (Z
metal oxides such as nO), tin oxide (SnO ₂ ), strontium titanate (SrTiO ₃ ), tungsten oxide (WO ₃ ), bismuth oxide (Bi ₂ O ₃ ), and iron oxide (Fe ₂ O ₃ ). In particular, titanium oxide has a high band gap energy, is chemically stable and non-toxic,
It is preferably used because it is easily available.

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 sol-gel reaction And (2) an organopolysiloxane obtained by crosslinking a reactive silicone having excellent water repellency and oil repellency, and the like.

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

Specifically, methyltrichlorosilane, methyltribromosilane, methyltrimethoxysilane, methyltriethoxysilane, methyltriisopropoxysilane, methyltri-t-butoxysilane; ethyltrichlorosilane, ethyltribromosilane, ethyltrichlorosilane 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, particularly, a polysiloxane containing a fluoroalkyl group can be preferably used. Specifically, one or more hydrocondensation products of the following fluoroalkylsilanes, and 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 Si (OCH
_{3) 3 CF 3 (CF 2} ) 5 CH 2 CH 2 Si (OCH 3) 3 CF 3 (CF 2) 7 CH 2 CH 2 Si (OCH 3) 3 CF 3 (CF 2) 9 CH 2 CH 2 Si ( OCH ₃ ) ₃ (CF ₃ ) ₂ CF (CF ₂ ) ₄ CH ₂ CH ₂ Si (OCH ₃ )
₃ (CF ₃ ) ₂ CF (CF ₂ ) ₆ CH ₂ CH ₂ Si (OCH ₃ )
₃ (CF ₃ ) ₂ CF (CF 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 CF 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 (O
CH ₃ ) ₂ (CF ₃ ) ₂ CF (CF ₂ ) ₆ CH ₂ CH ₂ SiCH ₃ (O
CH ₃ ) ₂ (CF ₃ ) ₂ CF (CF ₂ ) ₈ CH ₂ CH ₂ SiCH ₃ (O
_{CH 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 (OC
H ₃ ) ₂ CF ₃ (CF ₂ ) ₅ (C ₆ H ₄ ) C ₂ H ₄ SiCH ₃ (OC
H ₃ ) ₂ CF ₃ (CF ₂ ) ₇ (C ₆ H ₄ ) C ₂ H ₄ SiCH ₃ (OC
_{H 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 S
i (OCH 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 a coating for a black matrix or a coating for a colored layer is provided. It exhibits the function of preventing adhesion of

The reactive silicone of the above (2) includes a compound having a skeleton represented by the following general formula 1.

[0044]

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.

A stable organosilicon compound which does not undergo a cross-linking reaction, such as dimethylpolysiloxane, may be mixed with the above-mentioned organopolysiloxane in a binder.

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., 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 together with other additives as necessary in a solvent. 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 is 5 to 5.
It can be set in the range of 60% by weight, preferably 20 to 40% by weight. Further, the thickness of the photocatalyst-containing layer is 0.1 mm.
It is preferably in the range of 05 to 10 μm.

In the present invention, the color filters 1, 11, 12
As the wettability changing component layer constituting 1, 31, an organic polymer resin layer can be used in addition to the photocatalyst containing layer as described above. Organic polymers such as polycarbonate, polyethylene, polyethylene terephthalate, polyamide, and polystyrene are irradiated with ultraviolet rays, particularly ultraviolet rays containing a large amount of low-wavelength components of 250 nm or less, whereby the polymer chains are cut to reduce the molecular weight. The surface is roughened to change the wettability and become highly hydrophilic. Utilizing this, it is possible to obtain a large difference in wettability between the light-irradiated portion and the non-light-irradiated portion, and obtain a color filter by increasing the receptivity and repulsion of the light-shielding layer paint and the coloring layer paint. it can.
The high hydrophilicity means that the contact angle with water is 20 ° as described above.
It means that (Black Matrix) The black matrices 4 and 34 constituting the color filters 1 and 31 are formed in the highly hydrophilic portions of the photocatalyst containing layer 3 and the first photocatalyst containing layer 33a, respectively. Are located outside the boundary portion and the formation region of the colored layer. 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 the thickness can be set in a range of 0.5 to 10 μm. . 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. Further, as a resin binder, an o / w emulsion type resin composition, for example,
Emulsified reactive silicones can also be used.

The black matrices 14 and 24 constituting 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, a carbon fine particle, 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) The coloring layers 5, 15, 25, and 35 are formed on the highly hydrophilic portion of the photocatalyst-containing layer, and a red pattern, a green pattern, and a blue pattern are arranged in a desired pattern shape. A layer made of a coloring agent such as an inorganic pigment, an organic pigment, or a dye, 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. Further, as a resin binder, o / w emulsion type resin composition,
For example, an emulsion of a reactive silicone can be used.

The pattern shape of the red, green and blue patterns constituting the colored layer can be any known arrangement such as a stripe type, a mosaic type, a triangle type and a four pixel arrangement type. (Protective Layer) The protective layers 6, 16, 26, and 36 flatten the surface of the color filter and form a colored layer or
It is provided to prevent the components contained in the colored layer and the photocatalyst from being eluted into the liquid crystal layer. The thickness of the protective layer can be set in consideration of the light transmittance of the material used, the surface condition of the color filter, and the like.
It can be set in the range of 1 to 2.0 μm. The protective layer can be formed by using, for example, a known transparent photosensitive resin, a two-component curable transparent resin, or the like having a light transmittance required for the transparent protective layer. Color filter manufacturing method first embodiment of the present invention Next, embodiments of a color filter manufacturing method 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, a photocatalyst containing layer 3 as a wettability changing component layer is formed on a transparent substrate 2 (FIG. 5A). The photocatalyst-containing layer 3 is formed by dispersing the above-described photocatalyst and binder together with other additives as necessary in a solvent to prepare a coating solution, applying the coating solution, and then subjecting the coating solution to hydrolysis, A photocatalyst can be formed in a binder by advancing a condensation reaction to a strong step. 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, 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 due to 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 on the light irradiation site 3 'may be performed by a nozzle discharge method such as an inkjet method. In this case, the coating material for the black matrix supplied into the light-irradiated portion 3 'by nozzle discharge is uniformly diffused and attached to the light-irradiated portion 3' showing high hydrophilicity, and is also non-light-irradiated showing 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 an evaporation method or the like, and peeling 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, so that a specific wettability portion is formed. 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 a coating method, a nozzle discharge method such as an inkjet method, a vacuum thin film forming method, and the like, similarly to the above-described black matrix forming step (second step). The supplied paint is repelled and removed at the black matrix 4 and at the non-light-irradiated portion exhibiting high water repellency, and selectively adheres only to the light-irradiated portion 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). When 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.

By repeating the same operation as that for forming the red pattern, a green pattern 5G and a blue pattern 5B are formed. By forming the protective layer 6, the color filter 1 shown in FIG. 1 is obtained (FIG. 5F).

When the nozzle discharge method is used in the second step and the pattern (pixel) of each color is surrounded by the black matrix 4, the photocatalyst containing the black matrix 4 formed in the first step is used. The entire surface of the layer 3 is irradiated with light to make it highly hydrophilic by the action of a photocatalyst. Thereafter, a coating material for a colored pattern is supplied from a nozzle to each pattern forming portion of each color to uniformly diffuse and adhere.
Thereafter, a hardening treatment 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 rays containing a large amount of low wavelength components of 250 nm or less. Second Embodiment Next, a second embodiment of the color filter manufacturing method of the present invention 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, a photocatalyst containing layer 13 is formed on a transparent substrate 12 on which a black matrix 14 has been formed in advance (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 to be formed on the photocatalyst containing layer 13 is irradiated with light, and the photoirradiated portion 13 'is made highly hydrophilic by the action of the photocatalyst to form a specific wettable portion (FIG. 9). 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 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 (second step) in the first embodiment described above. Good. The supplied paint is repelled and removed at the non-light-irradiated portion showing high water repellency, and the light-irradiated portion 1 showing high hydrophilicity is removed.
It selectively adheres only to 3 '. And the light irradiation part 13
The red pattern paint applied on the 'is cured to form a red pattern 15R (FIG. 6C).

By repeating the same operation as the above-described formation of the red pattern, a green pattern 15G and a blue pattern 15B are formed. By forming the protective layer 16, 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 rays containing a large amount of low wavelength components of 250 nm or less. Third Embodiment Next, a third embodiment of the color filter manufacturing method of the present invention will be described with reference to FIG. 8 taking the color filter 21 shown in FIG. 3 as an example.

First, a first photocatalyst containing layer 23a is formed on a transparent substrate 22 on which a black matrix 24 has been formed in advance, and light is irradiated to a portion where a red pattern is formed on the photocatalyst containing layer 23a. A specific wettability site is formed by making 23′a highly hydrophilic by the action of a photocatalyst (FIG. 8A). First photocatalyst containing layer 23
The formation of a can be performed in the same manner as the formation of the photocatalyst containing layer 3 in the first embodiment described above. The light irradiation on the first 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 exhibiting high water repellency, and selectively adheres only to the light-irradiated portion 23'a exhibiting 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-irradiated portion (highly hydrophilic portion) 23'a of the photocatalyst-containing layer 23a is formed on the transparent substrate 22.
Formed on top.

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)), a paint for a 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 irradiation site (highly hydrophilic site) 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 rays containing a large amount of low wavelength components of 250 nm or less. Fourth Embodiment 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, the transparent substrate 32
A first photocatalyst-containing layer 33a is formed thereon, and a light is irradiated to a portion where a black matrix is formed on the photocatalyst-containing layer 33a. A specific wettability site 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. The light irradiation on the first photocatalyst containing layer 33a may be any of pattern irradiation and light drawing irradiation as in the black matrix forming step (second step) in the first embodiment.

Next, a black matrix paint is applied onto the light-irradiated portion 33'a and cured to form a black matrix 34 (FIG. 9B). Light irradiation part 3
The adhesion 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.
A specific wettability portion is formed by irradiating light to the formation portion of the red pattern on 3b and making the light irradiation portion 33'b highly hydrophilic by the action of a photocatalyst (FIG. 9).
(C)). The formation of the second photocatalyst containing layer 33a 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 red pattern paint is applied to the second photocatalyst containing layer 3.
3b. 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 (second step) in the first embodiment described above. Good. The supplied paint is repelled and removed at the black matrix 34 and at the non-light-irradiated portion showing high water repellency, and selectively adheres only to the light-irradiated portion 33'b showing high hydrophilicity. Then, the red pattern paint adhered on the light irradiation part 33'b is cured to form a red pattern 35R (FIG. 9D). Thereby, the second photocatalyst containing layer 33b and the red pattern 35R formed on the light irradiation portion (highly hydrophilic portion) 33'b of the photocatalyst containing layer 33b.
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 the photocatalyst-containing layer 33c is formed. The fourth photocatalyst-containing layer 33d is formed on the first photocatalyst-containing layer 33a, and a light-irradiated portion (highly hydrophilic portion) 33 'of the photocatalyst-containing layer 33d.
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
By forming the protective layer 36 on the colored layer 35, the color filter 31 shown in FIG. 4 is obtained (FIG. 9E).

As described above, in the present invention, the paint for the black matrix or the paint for the colored layer can be selectively adhered only to the portion where the black matrix or the colored layer is 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 rays 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 of manufacturing the color filter are examples, and the present invention is not limited thereto.

[0072]

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 the 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 Photocatalyst-Containing Layer Coating Solution) Photocatalyst-containing composition (ST-K01 manufactured by Ishihara Sangyo Co., Ltd.): 2 parts by weight Organoalkoxysilane: 0.4 part by weight (manufactured by Toshiba Silicone Co., Ltd.) TSL8113)-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 is coated on a soda glass transparent substrate by a spin coater. After drying at 150 ° C. for 10 minutes, hydrolysis and polycondensation are allowed to proceed.
A transparent photocatalyst-containing layer (thickness: 0.5 μm) in which the photocatalyst was firmly fixed in the organopolysiloxane was formed. A mercury lamp (wavelength 365 n) is applied to this photocatalyst-containing layer via a mask.
m), pattern irradiation is performed for 50 seconds at an illuminance of 70 mW / cm ² , and the contact angle of water between the irradiated portion and the non-irradiated portion is measured with a contact angle measuring device (CA-Z type manufactured by Kyowa Interface Science Co., Ltd.)
(Use water drops from a microsyringe to measure 3
(After 0 seconds), the contact angle of water at the non-irradiated part was 1
While the contact angle of water at the irradiated site is 42 ° or less, the irradiated site becomes a highly hydrophilic site, and the pattern can be formed due to the difference in wettability between the irradiated site and the non-irradiated site. Was confirmed. Formation of Black Matrix Next, a photocatalyst containing layer was formed on the transparent substrate in the same manner as described above. (Corresponding to FIG. 5A) This 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). On the other hand, a mixture having the following composition was heated to 90 ° C. to dissolve
Centrifugation was performed at 2000 rpm, followed by filtration 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-exchanged 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 was performed at 60 ° C. for 3 minutes, and the coating liquid for a black matrix was cured by exposing with a mercury lamp, and further subjected to a heat treatment at 150 ° C. for 30 minutes to form a black matrix. (Corresponding to FIG. 5 (C)) Formation of Colored Layer First, a mixture of the following compositions was ground with a three-roll mill, 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) 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 ・ Aqueous solution of polyvinyl alcohol 5% by weight 10 parts by weight (average degree of polymerization of polyvinyl alcohol 1750, saponification degree 88 mol%) Next, the photocatalyst-containing layer on which the black matrix is formed as described above. 150 μm ×
Irradiation (70 nm) with a mercury lamp (wavelength 365 nm) through a mask provided with an opening pattern for forming a colored layer of 300 μm.
Irradiation at 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. 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. 5E) Similarly, the green pattern forming region 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, and then cured. After performing a heat treatment to form a green pattern, and further irradiating light to the blue pattern forming region of the photocatalyst containing layer, after applying a blue pattern coating solution and selectively attaching only to the irradiated portion,
A hardening treatment and a heat treatment were performed to form a blue pattern.

Next, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) was applied as a protective layer on the colored layer by a spin coater, and cured at 200 ° C. for 30 minutes. Was formed, and 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 the photocatalyst containing layer having the following composition was prepared.

(Composition of Photocatalyst-Containing Layer Coating Solution) Photocatalyst-containing composition (STS-01 manufactured by Ishihara Sangyo Co., Ltd.): 1 part by weight Reactive silicone: 0.76 parts by weight (Shin-Etsu Chemical Co., Ltd.)・ Catalyst ・ ・ ・ 0.02 parts by weight (CAT-PM6A ・ CAT-PM6B = 4: 6 made by Shin-Etsu Chemical Co., Ltd.) ・ water ・ ・ ・ 1.34 parts by weight It is applied on a transparent substrate made of soda lime glass by a spin coater, and heat-treated at 160 ° C. for 1 minute to form a transparent photocatalyst-containing layer in which the photocatalyst is firmly fixed in organopolysiloxane (thickness 0.5 μm).
m) was formed. This photocatalyst-containing layer was subjected to pattern irradiation with a mercury lamp (wavelength 365 nm) at an illuminance of 70 mW / cm ² for 100 seconds through a mask through a mask, 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 portion was 115 °, whereas the contact angle of water at the irradiated portion was 10 ° or less, the irradiated portion became a highly hydrophilic portion, and the It was confirmed that pattern formation was possible due to the difference in wettability. Formation of Black Matrix Next, a photocatalyst containing layer is formed in the same manner as described above, and the black matrix formation region of the photocatalyst containing layer is irradiated with light (irradiation with a mercury lamp (wavelength 365 nm) at an illuminance of 70 mW / cm ² for 100 seconds). Then, a coating liquid for a black matrix was applied and selectively adhered only to an irradiated portion, 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 Colored Pattern Coating Solution) 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 Poval AT manufactured by Shin-Etsu Chemical Co., Ltd.)-Water: 97 parts by weight Next, the entire surface of the photocatalyst-containing layer on which the black matrix was formed as described above was irradiated with a mercury lamp (wavelength 365 nm) (70 mW / cm ² ). Light intensity for 100 seconds)
The irradiated portion was made highly hydrophilic (10 ° or less in terms of water contact angle).

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 solution for each color pattern thus dropped was repelled by the black matrix, and was uniformly diffused and selectively adhered in the pattern forming region of each color, which was a highly hydrophilic portion surrounded by the black matrix. 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, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) was applied as a protective layer on the colored layer by a spin coater, and cured at 200 ° C. for 30 minutes for protection. Layers were formed to produce a color filter of the present invention having a structure as shown in FIG. Example 3 Photocatalyst-Containing Layer Forming A coating solution for a photocatalyst-containing layer similar to that of Example 1 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. Is applied by a spin coater, and 150
After drying 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. 6A) Formation of Colored Layer Next, this 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. 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 mask for a blue pattern (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 coating solution for blue pattern was applied on the entire surface of the photocatalyst containing layer by a bar coater. The applied blue pattern coating solution 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 irradiated area 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 resulting mixture was mixed with 10 g of a 0% by weight aqueous solution, and the resulting mixture was kneaded and dispersed with three rolls, centrifuged at 12,000 rpm, and then filtered 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 liquid (photosensitive resin composition) for a green pattern.

Next, the above-mentioned coating solution for green pattern was applied 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, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) was applied as a protective layer on the colored layer by a spin coater, and a curing treatment was performed at 200 ° C. for 30 minutes for protection. Layers were formed, and a color filter of the present invention having a configuration as shown in FIG. 2 was manufactured. Example 4 Photocatalyst-Containing Layer Forming Coating Solution for Photocatalyst-Containing Layer Same as in Example 1 on a transparent substrate made of soda glass having a black matrix composed of a chromium thin film pattern having an opening of 140 μm × 260 μm and a line width of 30 μm. Is applied by a spin coater, and 150
After drying 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. (Equivalent to FIG. 6A) 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 placed on the black matrix. After this, 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), and the irradiated portion is highly hydrophilic (converted to the contact angle of water). 10 ° or less). (See FIG. 7) Each irradiation site (highly hydrophilic site) is 150 μm × 27.
It has a size of 0 μm, and the non-irradiated portion 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 Colored Pattern Coating Solution) 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 Part (Shin-Etsu Poval AT manufactured by Shin-Etsu Chemical Co., Ltd.) ・ Water: 97 parts by weight Next, the above-mentioned red pattern coating solution was applied from a nozzle to the center of each red pattern forming region surrounded by a black matrix by a dot diameter of 120 μm. Was dropped. Similarly, a green pattern coating liquid is applied from the nozzle to the center of each green pattern forming area surrounded by the black matrix by a dot diameter of 12.
It was dropped at 0 μm. 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 colored pattern thus dropped is repelled at the non-irradiated portion on the black matrix, and is uniformly dispersed and selected in 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, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) was applied as a protective layer on the colored layer by a spin coater, and the coating was cured at 200 ° C. for 30 minutes for protection. Layers were formed, and a color filter of the present invention having a configuration as shown in FIG. 2 was manufactured. (Example 5) Photocatalyst-containing layer forming liquid A coating solution for a photocatalyst-containing layer similar to that of Example 1 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 x 300 µm and a line width of 30 µm. Is applied by a spin coater, and 150
After drying 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 the colored layer first, to prepare Pigment Red 168, Pigment Green 36, Pigment Blue 60 as the pigment 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 (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%) A photocatalyst-containing layer is formed on the photocatalyst-containing layer on which is formed in the same manner as in Example 1, and this photocatalyst-containing layer is irradiated with a mercury lamp (wavelength 365 nm) through a red pattern mask (70 m).
(W / cm ² illuminance for 50 seconds) to make the irradiated area highly hydrophilic (10 ° or less in terms of water contact angle). (FIG. 8
(Equivalent to (A)) 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.
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. After light irradiation is performed on the formation area (corresponding to FIG. 8C), a coating liquid for green pattern is applied and selectively adhered only to the light irradiation part.
Curing treatment and heat treatment were performed to form a green pattern.
(Corresponding to FIG. 8 (D)) Further, on the photocatalyst containing layer on which the green pattern was formed,
After forming a photocatalyst containing layer in the same manner as in Example 1, irradiating the blue pattern forming region of the photocatalyst containing layer with light, applying a blue pattern coating solution and selectively adhering only to the light irradiation site , A curing process and a heating process to form a blue pattern.

Next, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) was applied as a protective layer on the colored layer by a spin coater, and cured at 200 ° C. for 30 minutes. Was formed, 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 formation region of the photocatalyst-containing layer was irradiated with light to obtain a black matrix. After a matrix coating solution was applied and selectively adhered to the irradiated site, a heat treatment was performed 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 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 (photosensitive resin composition) for a blue pattern were prepared.

(Composition of the mixture) Pigment 1 part by weight 10% by weight aqueous solution of polyvinyl alcohol 10 parts by weight (average degree of polymerization of polyvinyl alcohol 1750, saponification degree 88 mol%) Next, as described above, the black matrix was used. A photocatalyst-containing layer is formed on the photocatalyst-containing layer on which is formed in the same manner as in Example 1, and this photocatalyst-containing layer is irradiated with a mercury lamp (wavelength 365 nm) through a red pattern mask (70 m).
(W / cm ² illuminance for 50 seconds) to make the irradiated area highly hydrophilic (10 ° or less in terms of water contact angle). (FIG. 9
(Equivalent to (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.
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. After irradiating the formation area with light and applying a green pattern coating liquid to selectively adhere only to the light irradiation area, a curing process and a heating process are performed to form a green pattern, and further a green pattern is formed. A photocatalyst-containing layer was formed on the photocatalyst-containing layer in the same manner as in Example 1, and the blue pattern-forming region of the photocatalyst-containing layer was irradiated with light. Then, a hardening treatment and a heating treatment were performed to form a blue pattern.

Next, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) was applied as a protective layer on the colored layer by a spin coater, and cured at 200 ° C. for 30 minutes. Was formed, and 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 obtain a black matrix. After a matrix coating solution was applied and selectively adhered to the irradiated site, a heat treatment was performed 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).
Irradiation with a mercury lamp (wavelength 365 nm) through a mask having a rectangular opening (9 mm at an illuminance of 70 mW / cm ² ).
(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 vapor-deposited on the photocatalyst-containing layer at a degree of vacuum of 1 × 10 ⁻⁵ Torr and a vapor deposition rate of 10 ° / sec by a vacuum vapor 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 washed away with acetone, the red pigment thin film was peeled off only at the non-irradiated portion due to the difference in adhesion between the light-irradiated portion and the non-irradiated portion of the photocatalyst containing layer. The irradiation site has 23
μm × 12 μm rectangular red pigment thin film (0.4 μm thick
m) was formed.

[0098]

Embedded image Example 8 Formation of Black Matrix First, a photocatalyst-containing layer was formed in the same manner as in Example 1, light was irradiated to the black matrix formation region of the photocatalyst-containing layer, and a coating liquid for black matrix was applied and irradiated. After selectively attaching to the site, a heat treatment was performed 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).
Irradiation with a mercury lamp (wavelength 365 nm) through a mask having a rectangular opening (9 mm at an illuminance of 70 mW / cm ² ).
(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 vapor-deposited on the photocatalyst-containing layer at a degree of vacuum of 1 × 10 ⁻⁵ Torr and a vapor deposition rate of 10 ° / sec by a vacuum vapor deposition method. A blue pigment thin film was formed on the entire surface of the photocatalyst-containing layer.

Next, when the surface of the blue pigment thin film was rinsed with methanol, the blue pigment thin film was peeled off only at the non-irradiated portion due to the difference in adhesion between the light-irradiated portion and the non-irradiated portion of the photocatalyst-containing layer. The irradiation site is 2
Rectangular blue pigment thin film of 3 μm × 12 μm (thickness 0.4
μm) was formed.

[0101]

Embedded image Next, an example using an organic polymer resin layer as a wettability changing component layer will be described. Example 9 Formation of Organic Polymer-Containing Layer Polycarbonate (Iupilon Z manufactured by Mitsubishi Gas Chemical Co., Ltd.)
400) was dissolved in a 3: 2 mixture of dichloromethane and 1,1, trichloroethane to give a polycarbonate solution having a solid content of 10% by weight.

Next, the above polycarbonate solution was applied at a thickness of 100 μm on a transparent substrate 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, and leveled for 15 minutes. Drying was performed at 120 ° C. for 120 minutes to form an organic polymer resin layer as a wettability changing component layer. The contact angle of this organic polymer resin layer with water was measured in the same manner as in Example 1, and as a result, it was 85 °. Formation of Colored Layer Next, a photomask having a light-shielding layer 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 interposed through the organic polymer resin layer. After positioning above, an excimer lamp (Excimer lamp 172 manufactured by Heraeus: irradiation wavelength 1) is passed through this photomask.
The organic polymer resin layer was irradiated (at an output of 90 W for 10 seconds) with a surface roughening treatment to make the irradiated portion highly hydrophilic (equivalent to a contact angle of water of 20 ° or less) by surface roughening.

Each of the above irradiating portions (highly hydrophilic portions) is 150
It has a size of μm × 270 μm, and the non-irradiated portion 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 was prepared with the same composition as in Example 4.

Next, the above-mentioned coating liquid for red pattern was dropped at a dot diameter of 90 μm from the nozzle to the center of each red pattern forming area surrounded by the black matrix. Similarly, a coating liquid for a green pattern was dropped at a dot diameter of 90 μm from a nozzle 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 90 μm from a nozzle to the center of each blue pattern forming region surrounded by a black matrix. The coating liquid for each colored pattern thus dropped is repelled at a non-irradiated portion on 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, a two-component mixed type thermosetting agent (SS7265 manufactured by Nippon Synthetic Rubber Co., Ltd.) was applied as a protective layer on the colored layer by a spin coater, and a curing treatment was performed at 200 ° C. for 30 minutes for protection. Layers were formed, and a color filter of the present invention having a configuration as shown in FIG. 2 was manufactured. (Evaluation) When the color filters produced in Examples 1 to 9 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.

[0107]

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 site), or high hydrophilicity (specific wettability site) due to surface roughening due to molecular weight reduction by breaking of polymer chains, while non-irradiation sites 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 showing 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 one embodiment of a color filter manufacturing method of the present invention.

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

FIG. 7 is a plan view showing a state of a mask when the photocatalyst-containing layer is irradiated with light in the color filter manufacturing method of the present invention shown in FIG.

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

FIG. 9 is a process chart for explaining another embodiment of the color filter manufacturing method 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

Claims (21)

[Claims] A transparent substrate, a colored layer formed of a plurality of colors formed in a predetermined pattern on the transparent substrate, and a light-shielding layer located at a boundary between the colored layers. A color filter, wherein at least one of the light-shielding layers is formed on the transparent substrate via a specific wettability portion of the wettability changing component layer. 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 color filter comprising a layer and a light-shielding layer located at a boundary between the colored layers. 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 wettability of the wettability changing component layer. And a colored layer having a plurality of colors formed in a predetermined pattern on the active site, wherein the light-shielding layer is located at a boundary between the colored layers. 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 color filter having a desired number of colors and a stack of colored layers formed in a predetermined pattern, wherein the light-shielding layer is located at a boundary between the colored layers. 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, 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. Wherein the light-shielding layer is located at the boundary between the colored layers. 6. The color filter according to claim 1, wherein the specific wettability site is a highly hydrophilic site. 7. The color filter according to claim 1, wherein the wettability changing component layer is a photocatalyst-containing layer comprising at least a binder and a photocatalyst. 8. The color filter according to claim 6, wherein the binder contains an organopolysiloxane obtained from a composition containing chloro or alkoxysilane. 9. The color filter according to claim 6, wherein the binder contains an organopolysiloxane obtained from a composition containing a reactive silicone. 10. The color filter according to claim 1, wherein the wettability changing component layer is an organic polymer resin layer. 11. A first step of forming a specific wettable portion in a predetermined pattern on a transparent substrate and forming a light-shielding layer by applying a light-shielding layer paint on the wettable portion. Forming a specific wettable portion in a predetermined pattern, and applying a coating material for a colored layer on the wettable portion to form a colored layer. . 12. In the first step, a photocatalyst-containing layer comprising at least a binder and a photocatalyst is formed on a transparent substrate, and the photocatalyst-containing layer is irradiated with light. By forming a specific wettability site by the above, in the second step, the photocatalyst containing layer is irradiated with light, and the photoirradiation site is made highly hydrophilic by the action of the photocatalyst, thereby forming the specific wettability site The method for manufacturing a color filter according to claim 11, wherein: 13. A first step of forming a specific wettable portion in a predetermined pattern on a transparent substrate provided with a light-shielding layer in a predetermined pattern, and applying a coloring material for a colored layer on the wettable portion for coloring. And a second step of forming a layer. 14. In the first step, a photocatalyst-containing layer comprising at least a binder and a photocatalyst is formed on a transparent substrate having a light-shielding layer in a predetermined pattern so as to cover the light-shielding layer. 14. The method for producing a color filter according to claim 13, wherein irradiation is performed, and a specific wettability site is formed by making the light irradiation site highly hydrophilic by the action of a photocatalyst. 15. A specific wettability portion is formed in a predetermined pattern on a transparent substrate provided with a light shielding layer in a predetermined pattern,
A method for manufacturing a color filter, comprising: repeating the operation of forming a colored layer by adhering a coating material for a colored layer on the wettable portion by a required number of colors to form a colored layer of a plurality of colors. 16. A photocatalyst-containing layer comprising at least a binder and a photocatalyst is formed on a transparent substrate having a light-shielding layer in a predetermined pattern so as to cover the light-shielding layer, and the photocatalyst-containing layer is irradiated with light. The method for producing a color filter according to claim 15, wherein a specific wettability site is formed by making the compound highly hydrophilic by the action of a photocatalyst. 17. A first step of forming a specific wettable portion in a predetermined pattern on a transparent substrate, and applying a light-shielding layer paint on the wettable portion to form a light-shielding layer. An operation of forming a specific wettable portion in a predetermined pattern, and applying a coating material for a colored layer on the wettable portion to form a colored layer is repeated for a required number of colors to form a colored layer having a plurality of colors. A method of manufacturing a color filter, comprising: 18. In the first step, a photocatalyst-containing layer comprising at least a binder and a photocatalyst is formed on a transparent substrate, and the photocatalyst-containing layer is irradiated with light. Forming a specific wettability site by forming a photocatalyst containing layer composed of at least a binder and a photocatalyst so as to cover the light shielding layer in the second step, and irradiating the photocatalyst containing layer with light,
The method for producing a color filter according to claim 17, wherein a specific wettability site is formed by making the light irradiation site highly hydrophilic by the action of a photocatalyst. 19. The light irradiation on the photocatalyst-containing layer,
13. The method according to claim 12, wherein the exposure is performed by one of a pattern exposure through a mask and an optical drawing irradiation.
A method for manufacturing a color filter according to any one of claims 16 and 18. 20. The method according to claim 1, wherein the application of the coating material for the shielding layer and / or the coating material for the coloring layer is performed by any one of a coating method, a nozzle discharge method, and a vacuum thin film forming method.
A method for manufacturing a color filter according to any one of claims 1 to 19. 21. The vacuum thin film forming method, further comprising, after forming the thin film, removing a thin film made of a paint for a shielding layer or a paint for a colored layer attached to a portion other than a specific wettability portion. A method for manufacturing a color filter according to claim 20.