JP3160652B2 - Manufacturing method of color filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a color filter. The present invention can be embodied as a method for producing a color filter used for various applications.
For example, it can be used for manufacturing a color filter suitable for a color liquid crystal display.

[0002]

2. Description of the Related Art As a method of manufacturing a color filter, conventionally, a non-staining resist is provided on a light-transmitting substrate, and a required dyeing area is patterned after exposure and development.
After that, in addition to the dyeing method of dyeing the pattern area to form a filter layer, a photosensitive color polymer layer is coated on a substrate, and this is repeatedly exposed and developed in a pattern to form a filter layer. Known methods include a colored polymer method, a printing method for printing a pattern image on a substrate, an electrodeposition method, and an interference method. However, these methods have problems in that mass production is inferior due to complicated manufacturing steps, and that it is difficult to obtain a product having excellent quality stability.

[0003]

An object of the present invention is to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a method of manufacturing a color filter having excellent quality stability and mass productivity.

[0004]

As a result of intensive studies, the present inventor has found that a colored image forming material having a colored photosensitive layer provided on a support via a release layer is exposed and developed in a pattern, and then the image forming is performed. A method for producing a color filter, wherein a color filter having a colored image pattern is formed by transferring only a colored photosensitive layer formed in a pattern of a material onto a light-transmitting substrate.
The release layer has a colored feeling formed in the pattern shape.
Holding the optical layer and releasing only the formed colored photosensitive layer
Consisting of a heat-softening layer to be transferred to the light-transmitting substrate
The inventors have found that the above object can be achieved by a method for manufacturing a color filter characterized by the above, and have completed the present invention.

[0005] The colored image forming material used in the present invention comprises a support, on which a colored photosensitive layer is provided via a release layer.
As the simplest structure, a structure in which one release layer is formed on a support and one color photosensitive layer is further formed on the release layer can be used.

In the practice of the present invention, in order to form a colored photosensitive layer in a pattern, first, for example, a blue image forming material is exposed and developed using a mask, for example, a matrix-shaped mask, to form a blue image pattern. This is transferred to a light-transmitting substrate to form a blue image portion of a color filter, and then a green image portion of a color filter is formed by the same operation using a green image forming material, and further a red image is formed. The same operation may be repeated using the image forming material for forming a red image portion of a color filter to obtain a full-color color filter.

In the image forming material used in the present invention, the colored photosensitive layer is typically composed of a pigment as a coloring agent, o-naphthoquinonediazide as a photosensitive substance, and a binder (binder). it can. The release layer is for facilitating the transfer of the formed colored image onto the light-transmitting substrate, and can be preferably formed of, for example, an ethylene-vinyl acetate copolymer.

The support for constituting the image forming material used in the present invention may be made of any material. When back exposure is required, a transparent support is generally used. As the support, a polyester film, particularly a polyethylene terephthalate film, particularly a biaxially stretched polyethylene terephthalate film, is preferred in terms of dimensional stability against water and heat. In addition, an acetate film, a polyvinyl chloride film, a polystyrene film, and a polypropylene film can also be preferably used.

In the present invention, the image forming material has a release layer on a support. The release layer in the present invention, putters
The colored photosensitive layer formed in a
Release only the color photosensitive layer and transfer it to the transparent substrate
And a heat-softening layer. For example, in the practice of the present invention, a release layer is provided on a support by a heat-softening layer (further ,
Transfer only the formed colored photosensitive layer to a light-transmitting substrate
For, its preferred that the release treatment layer is formed on), it is possible to take a structure in which the colored light-sensitive layer is formed on this. Such a heat-softening layer can be preferably formed of, for example, a vinyl acetate-ethylene copolymer.

The release treatment layer may be, for example, a silicone resin,
Fluororesin, polyethylene, polypropyleneethylene-
α-olefin copolymer, propylene-α-olefin copolymer, ethylene-propylene copolymer, ethylene-
It can be formed from a propylene-diene copolymer, an ethylene-acrylic acid copolymer, an ethylene-vinyl acetate copolymer, an ionomer resin, a wax, a polyamide resin such as nylon or copolymerized nylon.

Further, a silicone resin or a fluorine resin may be added to a melamine resin or a polyacrylate urethane resin.

Since a polypropylene film, a polyethylene film and the like show a good release property without a special release treatment, a preferable mode is to provide a polypropylene layer or a polyethylene layer which is thinner than the thickness of the support. It can be a release layer.

The method for providing a polypropylene layer or a polyethylene layer on a support is as follows: (1) A solution prepared by dissolving polyvinyl acetate, polyvinyl chloride, epoxy resin, polyurethane resin, natural rubber, synthetic rubber or the like in an organic solvent. Is used as an adhesive, these adhesives are applied on a support, dried by hot air or heating, and then a polypropylene film or a polyethylene film is laminated and pressed and laminated under heating, a so-called dry lamination method;

(2) a copolymer of ethylene and vinyl acetate,
Using a copolymer of ethylene and acrylic acid ester, polyamide resin, petroleum resin, rosin, wax or a mixture of these as an adhesive, while heating these adhesives as they are and keeping them in a molten state, a doctor blade is placed on the support. So-called hot melt, which is applied by a method, roll coating method, gravure method, reverse roll method, etc., immediately laminated with a polypropylene film or a polyethylene film, and if necessary, heated to a high temperature and then cooled. Laminating method;

(3) A so-called extrusion lamination method in which polypropylene or polyethylene is kept in a molten state, extruded into a film by an extruder, and while the molten state is in a molten state, a support is pressed and laminated.

(4) When a film to be a support is formed by a melt extrusion method, a plurality of extruders are used and a polypropylene layer is formed on a support film together with a molten polypropylene or polyethylene by a single molding. Or a so-called co-extrusion method for forming a polyethylene layer.

The thickness of the release treatment layer is suitably in the range of 0.01 to 30 μm, particularly preferably in the range of 0.1 to 5 μm.

The thermal softening layer has the property of softening at the temperature during thermal transfer, and can be formed of a thermoplastic resin. The thermoplastic resin has a softening point of -30 ° C.
~ 150 ° C is preferred. The softening point temperature mentioned here is a VICAT softening point or a value indicated by a ring and ball method.
In the present invention, the following can be specifically mentioned as preferred resins.

Polyolefins such as polyethylene and polypropylene. Ethylene copolymers such as ethylene and vinyl acetate, ethylene and acrylate, and ethylene and acrylic acid. PVC. Vinyl chloride copolymers such as vinyl chloride and vinyl acetate. Polyvinylidene chloride. Vinylidene chloride copolymer. polystyrene. Styrene and styrene copolymers such as maleic anhydride. Polyacrylate. Polyester resin. Polyurethane resin. Acrylate and acrylate copolymers such as vinyl acetate. Polymethacrylate. Methacrylate copolymers such as methyl methacrylate and vinyl acetate, and methyl methacrylate and acrylic acid. Polyvinyl acetate. Vinyl acetate copolymer. Vinyl butyral resin. Polyamide resins such as nylon, copolymerized nylon and N-alkoxymethylated nylon. Synthetic rubber. Petroleum resin. Chloride rubber. Polyethylene glycol. Polyvinyl alcohol hydrozine phthalate. Cellulose derivatives, cellulose acetate phthalate, cellulose acetate succinate. Shellac. wax.

The heat softening layer can be provided on the support by using a known method.

The thickness of the heat-softening layer is preferably 1 to 50 μm.
Is appropriate, and particularly preferably in the range of 5 to 30 μm.

The above-mentioned release treatment layer can be provided on the heat-softening layer. This method includes, for example, dissolving the above-mentioned resin for forming the release treatment layer in an organic solvent or emulsifying the resin into a heat-softening layer. And a method of laminating a polypropylene film or a polyethylene film on the heat-softening layer.

In the present invention, the heat-softening release layer may contain a lubricant.

Next, in the image forming material used in the present invention, a colored photosensitive layer provided on a support via a release layer will be described.

One or more of these layers may be formed. In the case of two or more layers, the photosensitive layer having the photosensitive composition containing the photoreceptor and the coloring layer having the coloring agent may be separate layers.

The colored photosensitive layer can contain a coloring agent for forming a colored image.
Various dyes and pigments can be used. In particular, when used for color proofing, the ordinary colors generally required there, ie,
Pigments and dyes having a color tone that matches yellow, magenta, cyan, and black are required. In addition, when used for color filters, such as blue, green, red pigments,
Dyes may be required. In addition, metal powder, white pigment, fluorescent pigment, and the like can be used. When the image forming material of the present invention is applied to a color proof for color image proofing and other colored image forming materials, for example,
Many pigments and dyes known in the art can be optionally used. The following are some examples of various pigments and dyes known in the art. It is an organic pigment or dye such as an azo type, a phthalocyanine type, a quinacridone type, an anthraquinone type, an indigo type, a methine type, or an inorganic pigment, and some specific examples of these are described below.

(CI stands for color index). Lemon Chrome Yellow M35 (CI 77603) Medium Chrome Yellow (CI 77600) Molybdate Orange (CI 77605) Miloli Blue 671 (CI 77510) Seikalite Blue (CI 74200) Seikalite Rose (CI45160: 1) Seikalite Magenta (CI45170: 2) Seikalite Blue (CI42595: 2) Seikalite Violet B800 (CI42535: 2) Seika Fast Lake Red CZA665 (CI. 15585: 1) Seika Fast Red LR116 (CI. 15630: 1) Seika Fast Carmine 6B1488 (CI. 15850: 1) Seika Fast Red 8040 (CI. 15865 :) 1) Seika First Yellow 10GH (CI.11710) Seika First Yellow GH (CI.11680) Seika First Yellow 2015 (CI.11741) Seika First Yellow A-3 (CI.11737) Seika First Yellow 2300 (CI. 21090) Seika First Yellow 2200 (CI. 21095) Seika First Yellow 2400 (CI. 21105) Seika First Yellow 2600 (CI. 21100) Seika First Yellow 2500 (CI. 21096) Seika First Yellow 2720 (CI. 21108) Seika First Orange 2900 (CI. 21160) Seika First Orange 900 (CI. 21110) Seika First Orange 3044 (CI. 12075) Seika Fast Red 930 (B) (CI. 21120) Seika First Scarlet G conc (CI. 12315) Seika Fast Carmine 3840 (CI. 12490) Seika Fast Carmine 3870 (CI. 12485) Seika Fast Rubin RK-1 (CI. 12317) Seika Fast Violet FR (CI. 12322) Chromofine Blue 4920 (CI. 74160) Chromofine Green 2GO (CI. I.74260) Chromofine Yellow 5910 (CI.20035) Chromofine Orange 6726 (C.I. I. not listed. Chromo Fine Scarlet 6750 (CI not listed) Chromo Fine Red 6820 (CI 46500) Chromo Fine Violet (CI 51319)

Shimla First Yellow 8GTF (CI. 21105) Shimla First Yellow 4186 (CI. 11767) Shimla First Yellow 4193G (CI. 21100) Shimla First Yellow GHK-N4 (CI. 21090) Shimla First Yellow GTF230T (CI not listed) Shimla First Yellow RF (CI. 21096) Shimla First Yellow 4181 (CI. 21108) First Gen Super Yellow GRO (CI. 56280) Shimla First Pyrazolone Orange G (CI. 21110) Shimla First Orange V (CI. 21160) Shimla First Orange 4183H (CI. 11780) Larake Red C conc 130 (CI. 15585: 1) Shimla Neotor Red 2BY (CI. 15565: 1) Shimla Red 2BS (CI. 15865: 1) Fast Gen Super Red 2Y (CI. 73905) Fast Gen Super Red 7083Y (C.I. 46500) Shimla Red 3013 (C.I. 15865: 2) Shimla Brilliant Carmine 6B246 (C.I. 15850: 1) Fast Gen Super Magenta R (C.I. 73915) Fast Gen Super Violet RNS (CI. 51319) Fast Gen Super Blue 6016 (CI. 69800) Fast Gen Blue BSF-A (CI. 74160) Fast Gen Blue TGR-L (CI. .74160) First Gen Green S (C.I.74260) First Gen Green 2YK (C.I.74265) more than Dainippon Ink Co., Ltd.

Oriental Yellow GT (CI. 11680) Victoria Pure Blue (CI. 42595) Lionol Red 7B4401 (CI. 15830) Lionol Red 3901 (CI. 12120) Lionol Red FB5500 (CI. 12120) CI.12490) Lionol Red FBK (CI.12490) No. 7100 Lionol Yellow (CI. 21096) Lionol Yellow FGG-3 (CI. 21127) Lionol Yellow NBR (CI. 21108) Lionol Yellow 1806-G (CI. 21127) Lionol Red 2BK (CI.15865: 4) Lionol Yellow K-5G (CI.13960) Lionol Yellow K-2R (CI.13955) Lionol Yellow FGG-3 (CI.11127) Lionol Blue 7210-V (CI 74160) Lionol Blue SM (CI 74160) Lionol Blue FG-7330 (CI 74160) Lionol Blue SPG-8 (CI 74160) Lionol Blue ESP-S (CI. 74160) Lionol Blue E (CI. 74160) Lionol Green B-201 (CI. 74260) Lionol Green Y-101 (CI. 74260) Lionol Green 6Y-501 (CI. 74160) Lionon Yellow GF (C.I. 70600) Rionogen Yellow 3G-F (C.I. not listed.) Rionogen Yellow RX-F (C.I. 66280) Rionogen Orange R.F. I.11780) Rionogen Orange GR-F (C.I. 71105) Rionogen Brown R.F. (C.I.12510) Rionogen Red YF (C.I. 46500) Rionogen Red 6B-F (C.I. 46500) Rionogen Red GD-F (C.I. 53900) Rionogen Magenta RF (C.I. 73915) Rio Roh Gen Violet RL-F (C.I.51319) Rio Roh Gen blue R-F (C.I.69800) Rio Roh Gen Blue R3-F (C.I.69800) all manufactured by Toyo Ink Mfg. Co., Ltd.

Auramine (CI.41000) Carotene Brilliant Flavin (CI. Basic 13) Rhodamine 6 GCP (CI. 45160) Rhodamine B (CI. 45170) Safranin OK 70: 100 (CI. 50240) Erioglaucine X (CI. 42080) Fast Black HB (CI. 26150) Benzidine Yellow 4T-564D (CI. 21095) Mitsubishi Carbon Black MA-100 Mitsubishi Carbon Black # 30, # 40 , # 50

In the practice of the present invention, the content of the coloring agent in the colored photosensitive layer or the colored layer can be determined in consideration of the target optical density, the removability of the colored photosensitive layer from the developing solution, and the like. In the present invention, the content of the coloring agent is preferably in the range of 5 to 40% by weight, particularly preferably in the range of 10 to 30% by weight. In the practice of the present invention, two or more kinds of pigments and dyes used as colorants may be used in combination.

Next, a photoreceptor which can be used for imparting photosensitivity to the colored photosensitive layer will be described. Various photosensitive materials can be used as the photoreceptor. Such a photoreceptor, for example, undergoes a chemical change in its molecular structure within a short period of time when irradiated with actinic rays, changes its solubility in a solvent, and when a certain solvent is applied. Include all compounds such as monomers, prepolymers, or polymers that can dissolve and remove exposed or unexposed portions.

Examples of usable photoreceptors include photocrosslinking type photoreceptors represented by esterification of polyvinyl alcohol with cinnamic acid as a so-called negative-positive type in which the solubility of the exposed portion is reduced. Acrylic resins, diazonium salts and condensates thereof are mixed with polyvinyl alcohol, polyvinylpyrrolidone, polyacrylamide and the like, and systems mixed with a binder such as a cyclized rubber using an aromatic azide compound as a photocrosslinking agent, and the like. Further, a photosensitive resin utilizing photoradical polymerization or photoion polymerization can also be used.

As a so-called positive-positive type in which the solubility of the exposed portion is increased, there is, for example, a photosensitive composition using o-quinonediazide as a photosensitive agent, and specifically, 1,2-benzoquinonediazide. -4-sulfonyl chloride, 1,2-naphthoquinonediazide-4-sulfonyl chloride, 1,2-naphthoquinonediazide-5
A compound obtained by condensing a sulfonyl chloride or 1,2-naphthoquinonediazide-6-sulfonyl chloride with a compound containing a hydroxyl group and / or an amino group is preferably used.

Examples of the hydroxyl group-containing compound include trihydroxybenzophenone, hydroxyanthraquinone, bisphenol A, phenol novolak resin, resorcinbenzaldehyde condensed resin, and pyrogallol acetone condensed resin. Examples of the amino group-containing compound include aniline, p-aminodiphenylamine,
There are p-aminobenzophenone, 4,4-diaminobenzophenone, 4,4-diaminodiphenylamine and the like.

The above o-quinonediazide compound is further described in J. Org. "Light Sensit" by Kosar
live System "(Wiley & Sons,
New York, 1965) and Matsunaga, Inui, "Photosensitive Polymers" (Kodansha, 1977).

Further, as a positive / positive type, a compound capable of generating an acid upon irradiation with actinic rays, a compound having at least one bond decomposable by an acid, and a novolak resin containing two or three different phenols are contained. Alternatively, a photosensitive composition may be used.

In the present invention, the content of the photoreceptor in the colored photosensitive layer is, for example, preferably 5 to 80% by weight.

The colored photosensitive layer may contain a binder whether it is a single layer or divided into two or more layers. Such a binder is preferably film-forming and solvent-soluble, and Can be used a polymer compound which can be dissolved or swelled with an alkali developing solution.

In the present invention, as a binder constituting the colored photosensitive layer of the image forming material, a polymer compound having a carboxylic acid vinyl ester polymerized unit represented by the following general formula in the molecular structure can be preferably used. RCOOCH = CH ₂ where R represents an alkyl group having 1 to 17 carbon atoms.

Any polymer compound having the structure described above can be used arbitrarily. Examples of the vinyl carboxylate monomer for constituting the polymerized unit represented by the above general formula include the following. preferable. The name and chemical formula are shown together.

(1) vinyl acetate CH ₃ COOCH ＝ CH ₂ (2) vinyl propionate CH ₃ CH ₂ COOCH ＝ CH ₂ (3) vinyl butyrate CH ₃ (CH ₂ ) ₂ COOCH ＝ CH ₂ (4) vinyl pivalate (CH ₃ ) ₃ CCOOCH = CH ₂ (5) Vinyl caproate CH ₃ (CH ₂ ) ₄ COOCH = CH ₂ (6) Vinyl caprylate CH ₃ (CH ₂ ) ₆ COOCH = CH ₂ (7) Vinyl caprate CH ₃ (CH ₂ ) ₈ COOCH = CH ₂ (8) Vinyl laurate CH ₃ (CH ₂ ) ₁₀ COOCH = CH ₂ (9) Vinyl myristate CH ₃ (CH ₂ ) ₁₂ COOCH = CH ₂ (10) Vinyl palmitate CH ₃ (CH ₂ ) ₁₄ COOCH ＝ CH ₂ (11) vinyl stearate CH ₃ (CH ₂ ) ₁₆ COOCH ＝ CH ₂ (12) vinyl versatate

Embedded image

As the carboxylic acid vinyl ester monomer, those having 1 to 4 carbon atoms constituting the main chain of the carboxylic acid are more preferable. Particularly, vinyl acetate is preferred.

The above R includes an alkyl group having a substituent, that is, a vinyl ester of a substituted carboxylic acid is also included in the polymerized unit.

The polymer compound may be a polymer obtained by polymerizing one kind of vinyl carboxylate, a polymer obtained by copolymerizing two or more kinds of vinyl carboxylate, or a polymer obtained by copolymerizing vinyl carboxylate with the same. It may be a copolymer in any component ratio with other possible monomers.

Examples of the monomer unit which can be used in combination with the polymerization unit represented by the above general formula include ethylenically unsaturated olefins such as ethylene, propylene, isobutylene, butadiene and isoprene, for example, styrene, α-methyl Styrene, p-methylstyrene, p-
Styrenes such as chlorostyrene, for example acrylic acid, acrylic acid such as methacrylic acid, for example, itaconic acid, maleic acid, unsaturated aliphatic dicarboxylic acids such as maleic anhydride, for example, diethyl maleate, dibutyl maleate,
Diesters of unsaturated dicarboxylic acids such as di-2-ethylhexyl maleate, dibutyl fumarate, di-2-ethylhexyl fumarate, for example, methyl acrylate, ethyl acrylate, n-butyl acrylate, isobutyl acrylate, acrylic acid Α- such as dodecyl, 2-chloroethyl acrylate, phenyl acrylate, methyl α-chloroacrylate, methyl methacrylate, ethyl methacrylate
Methylene aliphatic monocarboxylic acid esters, for example, acrylonitrile, nitriles such as methacrylonitrile,
For example, amides such as acrylamide, for example, anilides such as acrylanilide, p-chloroacrylanilide, m-nitroacrylanilide and m-methoxyacrylanilide, for example, methyl vinyl ether, ethyl vinyl ether, isobutyl vinyl ether, β-chloroethyl vinyl ether and the like Vinyl ethers, vinyl chloride, vinylidene chloride, vinylidene cyanide, for example, 1
-Methyl-1-methoxyethylene, 1,1-dimethoxyethylene, 1,2-dimethoxyethylene, 1,1-dimethoxycarbonylethylene, ethylene derivatives such as 1-methyl-1-nitroethylene, for example, N-vinylpyrrole, N-vinyl carbazole, N-vinyl indole,
N- such as N-vinylpyrrolidene and N-vinylpyrrolidone
There are vinyl monomers such as vinyl compounds. These vinyl monomers generally have a structure in which an unsaturated double bond is cleaved and are present in a polymer compound.

In the present invention, when a polymer compound represented by the above general formula is used, a compound having a vinyl acetate polymerized unit in the molecular structure is particularly preferred. Among them, those having 40 to 95% by weight of vinyl acetate polymerized units and having a number average molecular weight (MN) of 1,000 to 100,0
00, having a weight average molecular weight (MW) of 5,000 to 5
A thing of 00,000 is preferred.

More preferably, a polymer compound having a vinyl acetate polymerized unit (especially 40 to 95% by weight) and a carboxylic acid vinyl ester polymerized unit having a longer chain than vinyl acetate is preferable, and a number average molecular weight (MN) is particularly preferable. 2,00
0-60,000, weight average molecular weight (MW) of 10,000
It is preferably from 00 to 150,000.

In this case, the monomer constituting the high molecular compound having vinyl acetate polymerized units by copolymerizing with vinyl acetate is arbitrary as long as it can form a copolymer. You can choose arbitrarily from your body.

Hereinafter, copolymers that can be used as the polymer compound in the present invention will be listed by showing their monomer components. However, as a matter of course, the present invention is not limited to the following example.

(1) Vinyl acetate-acrylate (2) Vinyl acetate-maleate (3) Vinyl acetate-ethylene (4) Vinyl acetate-vinyl carboxylate (5) Vinyl acetate-styrene (6) Vinyl acetate -Crotonic acid (7) vinyl acetate-maleic acid (8) vinyl acetate-2-ethylhexyl acrylate (9) vinyl acetate-di-2-ethylhexyl maleate (10) vinyl acetate-methyl vinyl ether (11) vinyl acetate-vinyl chloride (12) Vinyl acetate-N-vinylpyrrolidone (13) Vinyl acetate-vinyl propionate (14) Vinyl acetate-vinyl pivalate (15) Vinyl acetate-vinyl versatate (16) Vinyl acetate-vinyl laurate (17) Acetic acid Vinyl-vinyl stearate (18) Vinyl acetate-bar Vinyl acetate-ethylene (19) Vinyl acetate-vinyl versatate-2-ethylhexyl acrylate (20) Vinyl acetate-vinyl versatate-vinyl laurate (21) Vinyl acetate-vinyl versatate-crotonic acid (22) Vinyl propionate -Vinyl versatate (23) vinyl propionate-vinyl versatate-
Crotonic acid (24) pivalic acid-vinyl stearate-maleic acid

In the present invention, a novolak resin can be used as the binder.

The measurement of the molecular weight of the polymer compound in the present specification is performed by GPC (gel permeation chromatography). The calculation of the number-average molecular weight MN and the weight-average molecular weight MW is described in Morio Tsuge, Tatsuya Miyabayashi, and Masayuki Tanaka, “Journal of the Chemical Society of Japan”, pp. 800-805 (1972).
Year), the peaks in the oligomer region are leveled out (connecting the centers of peaks and valleys).

Further, in the present invention, other polymer compounds which can be used as a binder for the colored photosensitive layer include sulfoalkyl esters of (meth) acrylic acid (co) polymer, vinyl acetal (co) polymer, Vinyl ether (co) polymer, acrylamide (co) polymer, styrene (co) polymer, cellulose derivatives and the like can also be mentioned.

In the present invention, the thickness of the colored photosensitive layer or the colored layer of the image forming material and the thickness of the photosensitive layer are appropriately determined according to the target optical density, the type of the coloring agent used in the colored photosensitive layer, its content, and the like. be able to. Within the allowable range, the smaller the film thickness of the colored photosensitive layer and the like, the higher the resolving power and the better the image quality. Thus, the membrane thickness is preferably usually being used in the range of ^{0.1g / m 2 ~5g / m 2} .

The colored photosensitive layer can be generally formed by applying a colored photosensitive layer coating solution containing a photosensitive member, a binder, and a colorant (pigment) on a support.

Here, an organic solvent can be used as a solvent for constituting the coating solution. In carrying out the present invention, any organic solvent that can be used as a coating solution for the colored photosensitive layer is optional, and for example, all known various organic solvents can be used. Examples of the organic solvent that can be used include hydrocarbons such as n-hexane, cyclohexane, n-pentane, benzene, toluene, xylene, methyl alcohol, ethyl alcohol, isopropyl alcohol, n-propyl alcohol, and t-butyl alcohol. ,
sec-butyl alcohol, isobutyl alcohol, n
Alcohols such as -butyl alcohol, 1-pentanol, 2-pentanol, 1-hexanol, acetone,
Cyclohexanone, methyl ethyl ketone, methyl-n-
Propyl ketone, methyl isopropyl ketone, methyl-
n-butyl ketone, ketones such as methyl isobutyl ketone, diethylene glycol monomethyl ether, diethylene glycol dimethyl ether, diethylene glycols such as diethylene glycol monoethyl ether, and others, methyl lactate, ethyl lactate, methyl propionate,
Esters such as methyl butyrate and ethyl acetate; nitriles such as acetonitrile and propionitrile; and other 1,4-
Examples thereof include dioxane, dimethylformamide, dimethylsulfoxide, methylene chloride, chloroform, and carbon tetrachloride. Of these, aromatic hydrocarbons such as benzene, toluene and xylene, ketones and esters are preferred, and cyclohexanone, toluene and methyl lactate are particularly preferred.

In carrying out the present invention, the colored photosensitive layer may contain various organic acids and acid anhydrides.

The organic acids that can be used include:
Various known organic acids can be mentioned.

Examples of such organic acids include, for example, Chemical Handbook, Basic Edition II (Maruzen 1966), Nos. 1054-1058.
All organic acids listed on the page can be mentioned. Such organic acids include, for example, benzoic acid, adipic acid, azelaic acid, isophthalic acid, p-toluic acid, q-toluic acid, β-ethylglutaric acid, m-oxybenzoic acid, 3,5-dimethylbenzoic acid 3,3-dimethoxybenzoic acid, glyceric acid, glutaconic acid, glutaric acid, p-anisic acid, cinnamic acid, succinic acid, acetic acid, sebacic acid, β, β-diethylglutaric acid, 1-cyclobutanedicarboxylic acid, 1 , 3-cyclobutanedicarboxylic acid,
1,3-cyclobutanedicarboxylic acid, 1,1-cyclopentanedicarboxylic acid, 1,2-cyclopentanedicarboxylic acid, 1,3-cyclopentanedicarboxylic acid, β, β-
Dimethylglutaric acid, dimethylmalonic acid, α-tartaric acid,
Speric acid, terephthalic acid, pimelic acid, phthalic acid, fumaric acid, propionic acid, β-propylglutaric acid, β-
Propylmalonic acid, β, β-methylpropylglutaric acid, mandelic acid, mesotartaric acid, methylmalonic acid, β-methylglutaric acid, malic acid, 1,1-cyclohexanedicarboxylic acid, 1,2-cyclohexanedicarboxylic acid,
1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, cis-4-cyclohexene-
Examples thereof include 1,2-dicarboxylic acid, stearic acid, erucic acid, undecenoic acid, lauric acid, butyric acid, n-capric acid, pelargonic acid, and n-undecanoic acid. In addition, organic acids having an enol structure such as Meldrum's acid and ascorbic acid can also be preferably used.

The organic acids preferably used among them are carboxylic acids and dibasic acids having 1 to 5 carbon atoms, more preferably acetic acid and glutaric acid.

The ratio of the organic acid in the photosensitive layer is as follows:
It is suitably from 0.05 to 10% by weight, more preferably from 0.1 to 5% by weight.

The acid anhydride which can be used is optional, and all known various acid anhydrides can be used. Preferably, a cyclic acid anhydride is used. Examples of such an acid anhydride include, for example, phthalic anhydride. , Tetrahydrophthalic anhydride,
3,6-Endoxy-Δ4-tetrahydrophthalic anhydride, tetrachlorophthalic anhydride, glutaric anhydride, maleic anhydride, chloromaleic anhydride, α-phenylmaleic anhydride, succinic anhydride, pyromellitic acid, etc. Can be.

The proportion of the above acid anhydride in the photosensitive layer is as follows:
It is suitably from 0.05 to 10% by weight, more preferably from 0.1 to 5% by weight.

In the practice of the present invention, if necessary, a plasticity or coatability improver may be added to each layer such as the colored photosensitive layer.

Examples of the plasticizer include various low molecular weight compounds such as phthalates, triphenyl phosphates, and the like.
Examples of the maleic acid esters and the coatability improver include surfactants such as fluorine surfactants and nonionic surfactants represented by ethylcellulose polyalkylene ether.

When constituting the image forming material of the present invention, the colored photosensitive layer can be divided into two layers, a colored layer composed of a coloring agent and a binder and a photosensitive layer composed of a photosensitive composition. In this case, either layer may be arranged on the support side.

The image forming material of the present invention can be embodied as a color proof.

In this case, the colored photosensitive layer of the image forming material is
It is removed imagewise by development following imagewise exposure to form a colored image.

The image forming material is generally used in the form of transferring an image to a material to be transferred.

In the present invention, the image forming material is used in such a manner that it is exposed and developed to form an image portion, and at least the formed image portion is transferred to a light transmitting substrate to obtain a transferred image. Can be.

The image forming material can be exposed to light suitable for the colored photosensitive layer, particularly for the photosensitive member, and then developed to obtain an image. The developer used for developing the image forming material can be arbitrarily used as long as it has a developing effect of developing the material to be processed. Preferably, a developer containing an alkali agent and an anionic surfactant is used.

Examples of usable alkaline agents include (1) sodium silicate, potassium silicate, potassium hydroxide, sodium hydroxide, lithium hydroxide, sodium or ammonium phosphate dibasic or tertiary, sodium metasilicate, carbonate Inorganic alkali agents such as sodium and ammonia, (2) mono, di or trimethylamine, mono,
Examples thereof include organic amine compounds such as di- or triethylamine, mono- or diisopropylamine, n-butylamine, mono-, di-, or triethanolamine, mono-, di-, or triisopropanolamine, ethyleneimine, and ethylenediimine.

Examples of anionic surfactants that can be used include (1) higher alcohol sulfates (eg, sodium salt of lauryl alcohol sulfate, ammonium salt of octyl alcohol sulfate, ammonium salt of lauryl alcohol sulfate, secondary sodium alkyl) (2) fatty acid phosphoric acid ester salts (for example,
(3) Alkyl aryl sulfonates (for example, sodium dodecylbenzenesulfonate, sodium isopropylnaphthalenesulfonate, sodium dinaphthalenesulfonate, sodium sodium metanitrobenzenesulfonate, etc.) (4) Alkyl amide sulfonates

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(5) Sulfonates of dibasic aliphatic esters (eg, dioctyl sodium sulfosuccinate, dihexyl sodium sulfosuccinate, etc.) (6) Formaldehyde condensates of alkyl naphthalene sulfonates (eg, sodium dibutyl naphthalene sulfonate) Formaldehyde condensate).

The alkali agent and the anionic surfactant can be used in any combination.

In the present invention, as the light-transmitting substrate on which the colored photosensitive layer formed in a pattern is transferred, any one can be used as long as it has light-transmitting properties that can be used as a substrate for a color filter. it can. The color filter may include a case where a transparent electrode is deposited in a later step, but when there is a possibility of being exposed to such a high temperature, a material having a good heat resistance is preferable as the material of the light-transmitting substrate. .

Examples of the material constituting the light transmitting substrate include high molecular compounds such as polyethylene terephthalate, polybutylene terephthalate, polystyrene, polycarbonate, polyether sulfone, polyvinyl alcohol, and cellulose acetate, soda glass, borosilicate glass, and the like. Glass, quartz and inorganic substances such as sapphire.

The light-transmitting substrate can be used in the form of a plate, a sort, a film, or the like using the above-mentioned materials.

The thickness of the light-transmitting substrate can be appropriately set according to the application and the material. For example, it is usually preferably in the range of 75 μm to 10 mm. In particular, when using, for example, glass as the light transmissive substrate for a liquid crystal color display, the thickness is preferably in the range of 75 μm to 3 mm.

There is no particular limitation on the surface of the light-transmitting substrate as long as it has the same level of surface accuracy as the light-transmitting substrate conventionally used for color filters. In order to realize the above, it is desirable that the surface accuracy of the light transmitting substrate is ± 0.1 μm.

In the present invention, it is preferable to provide a backing layer for the backing which exhibits an action such as antihalation on the surface of the light transmitting substrate opposite to the surface on which the photosensitive resin layer is formed.

[0083]

Next, embodiments of the present invention will be described. However, needless to say, the present invention is not limited by the following examples.

Example 1 A color filter was formed by the following method.

A colored image forming material was prepared according to the following formulation. An ethylene-vinyl acetate copolymer (trade name: Evaflex, manufactured by DuPont Mitsui Chemicals) is applied on a polyethylene terephthalate film by extrusion lamination to a thickness of 30 μm, and a support having a heat-softening layer as a release layer Created body.

[0086] Three substrates having a heat-softening layer obtained as described above were prepared, and a three-colored photosensitive layer dispersion was applied thereon so as to have a dry film thickness of 1 µm.
Dried. Thus, a cyan image forming material, a magenta image forming material, and a yellow image forming material were obtained.

The three colored photosensitive layer dispersions were prepared as follows. Color photosensitive layer dispersion (cyan) 1,2-naphthoquinonediazide-4-sulfonic acid-p-cresol formalin ester polymer 2.37 g vinyl acetate-vinyl versatate (80:20 parts by weight) copolymer (49.7 % Methanol solution) 15.36 g cyanine blue 4920 (manufactured by Dainichi Seika) 1.1 g methyl lactate 71.47 g

Colored Photosensitive Layer Dispersion (Magenta ) 1,2-Naphthoquinonediazide-4-sulfonic acid-p-cresol formalin ester polymer 2.37 g Vinyl acetate-vinyl versatate (80:20 parts by weight) copolymer ( (49.7% methanol solution) 15.36 g Seika Fast Carmine 1483 (Dainichi Seika) 1.1 g Methyl lactate 71.47 g

Colored photosensitive layer dispersion (yellow ) 1,2-naphthoquinonediazide-4-sulfonic acid-p-cresol-formalin ester polymer 2.37 g vinyl acetate-vinyl versatate (80:20 parts by weight) copolymer ( 15.36 g Seika Fast Yellow H-7055 (manufactured by Dainichi Seika) 1.1 g Methyl lactate 71.47 g

A net positive film having a pattern image is superimposed on the photosensitive layer surfaces of the three colored image forming materials obtained as described above, and the resulting images are applied to a four-layer image using a 1.5 kW ultrahigh pressure mercury lamp (manufactured by Camo Denken).
Image exposure was performed for 0 seconds to form an image.

Development was carried out by immersion in the following developer for 30 seconds to form a colored image having three color pattern images.

<Developer> Na ₂ CO ₃ 15 g Surfactant (Perox NBL, manufactured by Kao Atlas Co., Ltd.) 50 g Distilled water 1000 g

Next, the image surface of the cyan image was brought into close contact with the glass substrate, and passed between a pair of nip rolls heated to 80 ° C. at a pressure of 5 kg / cm ² at a speed of 50 cm / min. After that, the support was peeled off. Peeling was easily performed, and only the cyan image portion was transferred onto the substrate.

Subsequently, a colored image was transferred in the order of magenta and yellow, whereby a color filter composed of three color pattern images was obtained on the substrate.

According to the present method, the method for producing a color filter is very simple. Further, when this color filter was provided on a CCD and the spectral characteristics of the devices were compared, it was found that the color separation property and the color tone were extremely uniform and good.

Example 2 A color filter was formed by the following method.

A colored image forming material was prepared according to the following formulation. An ethylene-vinyl acetate copolymer (trade name: Evaflex, manufactured by DuPont Mitsui Chemicals) is applied on a polyethylene terephthalate film by extrusion lamination to a thickness of 30 μm, and a support having a heat-softening layer as a release layer Created body.

Three substrates each having a heat-softening layer obtained as described above were prepared, and a three-colored photosensitive layer dispersion liquid was coated thereon to a dry film thickness of 1 μm.
Dried. Thus, a red image forming material, a green image forming material, and a blue image forming material were obtained.

The three colored photosensitive layer dispersions were prepared as follows. Color photosensitive layer dispersion (red) 1,2-naphthoquinonediazide-4-sulfonic acid-p-cresol formalin ester polymer 2.37 g vinyl acetate-vinyl versatate (80:20 parts by weight) copolymer (49.7) % Methanol solution) 15.36 g Fast Gen Super Magenta R (manufactured by Dainippon Ink Co., Ltd.) 1.1 g Methyl lactate 71.47 g

Colored Photosensitive Layer Dispersion (Green ) 1,2-Naphthoquinonediazide-4-sulfonic acid-p-cresol-formalin ester polymer 2.37 g Vinyl acetate-vinyl versatate (80:20 parts by weight) copolymer ( (49.7% methanol solution) 15.36 g Fast Gen Green 2YK (manufactured by Dainippon Ink and Chemicals, Inc.) 1.1 g Methyl lactate 71.47 g

Colored photosensitive layer dispersion (blue ) 1,2-naphthoquinonediazide-4-sulfonic acid-p-cresol formalin ester polymer 2.37 g vinyl acetate-vinyl versatate (80:20 parts by weight) copolymer ( 15.36 g Fast Gen Super Blue 6016 (manufactured by Dainippon Ink Co., Ltd.) 1.1 g Methyl lactate 71.47 g

A mesh-positive film having a pattern image is superimposed on the photosensitive layer surfaces of the three colored image forming materials obtained as described above, and a 4 kW ultrahigh-pressure mercury lamp (manufactured by Camo Denken) is used.
Image exposure was performed for 0 seconds to form an image.

Development was performed by immersion in the following developer for 30 seconds to form a colored image having three color pattern images.

<Developer> Na ₂ CO ₃ 15 g Surfactant (Perox NBL, manufactured by Kao Atlas) 50 g Distilled water 1000 g

Next, the image surface of the cyan image was brought into close contact with the glass substrate, and passed between a pair of nip rolls heated to 80 ° C. at a speed of 50 cm / min under a pressure of 5 kg / cm ^2. After that, the support was peeled off. Peeling was easily performed, and only the cyan image portion was transferred onto the substrate.

Subsequently, a colored image was transferred in the order of magenta and yellow, whereby a color filter composed of three color pattern images was obtained on the substrate.

According to this embodiment, the same effect as that of the first embodiment is obtained. That is, according to the present method, the method for producing a color filter is very simple. Also, when this color filter was provided on a CCD and the spectral characteristics of the elements were compared,
It was found that the color separation property and the color tone were extremely uniform and good.

[0108]

According to the method for producing a color filter of the present invention, a desired color filter can be easily and simply obtained, and the productivity is good and the mass productivity is excellent. Also,
A color filter having uniform and favorable spectral characteristics and excellent in quality stability can be obtained.

Claims (1)

(57) [Claims] A colored image forming material having a colored photosensitive layer provided on a support via a release layer is exposed and developed in a pattern, and then only the colored photosensitive layer formed in a pattern of the image forming material is exposed to light. Method for producing color filter for forming a color filter having a colored image pattern by transferring to a transparent substrate
Wherein the release layer is formed in the pattern shape.
The colored photosensitive layer is supported and only the formed colored photosensitive layer is separated.
A heat-softening layer that is molded and transferred to the light-transmitting substrate
A method for producing a color filter, comprising: