JP2010066757A - Method for manufacturing color filter, color filter substrate and the color filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a CF (color filter), having excelling performance in image characteristics, including fine resolution of pixels and sharpness of a pixel, solving the problems such as complicatedness of processes and shortening of the operation time, and easily and economically coping with enlargement and miniaturization of a liquid crystal display. <P>SOLUTION: The method of manufacturing the color filter includes: a process of applying a photodecomposition type positive resist to cover at least a black matrix formed on the surface of a color filter substrate to form a resist layer; a process of exposing the resist layer from the back of the CF substrate; a process of cleaning and removing the resist layer, solubilized by exposure to form a hole space or a groove space (an empty hole) partitioned by a hole wall (a groove wall, a partition) formed of a resist layer remaining on the BM; a process of applying colored ink corresponding to a pixel of the CF to the empty hole to form a colored film; and a process of exposing from the BM side to solubilize and remove the partition wall made of the resist layer. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a color filter (hereinafter sometimes abbreviated as “CF”), a CF, and an image display apparatus using the CF, and more specifically, a black matrix (hereinafter abbreviated as “BM”) of a CF substrate. CF manufacturing method for forming colored pixels of each color in the gaps between the walls formed above, the CF substrate formed by the above method, the CF formed using the CF substrate, and the image using the CF substrate The present invention relates to a display device.

  With the recent development of information-oriented devices, LCD color displays are used as information display members for personal computers, mobile information devices, televisions, projectors, monitors, car navigation systems, mobile phones, electronic calculators and electronic dictionaries. It is used in a wide variety of applications such as bulletin boards, information bulletin boards, displays for function display boards, sign boards, and shooting screens for digital cameras and video cameras.

  Along with this, CFs mounted on liquid crystal color displays are also required to have higher quality in terms of image performance such as sharpness, transparency, and contrast. Both of the increase in size and the increase in size have been demanded, and in all of them, it is required to provide CF at low cost.

  Conventionally, as CF BM, a single layer chromium by a metal chromium film formed by vapor deposition, a low-reflection chromium layered on a chromium oxide layer, a chromium-based BM of ultra-low reflection chromium, and a black color such as a carbon black pigment or a titanium suboxide pigment. A black resin BM is used in which a pigment, a blue pigment, a violet pigment, and a black-toned pigment are dispersed in the resin.

  In addition, the formation of pixels is often performed by a manufacturing method referred to as a “photolithographic method” in the case of forming an additive color mixing type three primary color pixel. In this manufacturing method, red, green, and blue (in the present invention, the colors of the pixels are simply referred to as “R color, G color, B color” or simply “R, G, B” in order to distinguish them from the pigment color). Apply a photosensitive color resist with a spin coater or slit coater for each color, and then irradiate with ultraviolet rays using a photomask created using a pre-made colored pixel position and size as a glass mask. Then, it is cured, and unexposed portions are removed to develop colored pixels.

  In a spin coater, ink that is not actually used for pixel formation is generated, and as a method for improving this ink that is not used effectively, the method of applying ink using a slit coater was effective. In any case, the photolithographic method has a problem in that CF is produced through the above-described many steps, and the disadvantage that the ratio of effective colored ink to be used is low has not been improved.

  For the purpose of rationalizing the CF manufacturing method and economics, CF production by various printing methods has also been attempted, but it is natural that the formation of R, G, and B color pixels is performed on separate printing plates. As a result, the edge of the printed portion is swelled, and the edge portion is thinned, smudged, and the pixel is shifted. In addition, when a soft printing plate is used, R color and G color are used. The difference in pixel position is caused by the expansion and contraction of the B color printing plate, so the resolution and positional accuracy of pixel printing are low, and the fineness, sharpness, etc. of the three primary color pixels are insufficient. .

  As a further improvement method, a method using an ink jet (hereinafter abbreviated as “IJ”) printing method has also been proposed. However, this method has a problem with the viscosity of the IJ ink. That is, when the colored ink is ejected into the pixel forming space, if the ink viscosity is low, the ink also flows onto the BM, and if the ink viscosity is low, the ink is partially mixed between the pixels. There was a risk of causing. If the viscosity of the ink is increased in order to prevent the colored ink from flowing out, the discharged ink is a dot, so that the overlapping of the ink dots and the smoothness of the pixel surface are insufficient. The film thickness uniformity and the dye density uniformity cannot be achieved.

  The object of the present invention is to solve problems such as complicated processes and shortening of working time in the production of CF having excellent performance in image characteristics such as pixel fineness and sharpness, and is easy and economical. In addition, another object of the present invention is to provide a method of manufacturing a CF that can cope with an increase in size and a reduction in size of a liquid crystal display.

  As a result of intensive studies to achieve the above object of the present invention, the present inventors have formed a high partition made of a positive resist that can be easily washed and removed on the BM formed on the CF substrate. Therefore, it is possible to form pixels with sufficient color density even if the holes for pixel formation are surrounded by high walls, and the ink is diluted with a solvent or water to have a low viscosity as a colored ink. In addition, it is possible to fill a sufficient amount of ink in the holes for pixel formation, and unnecessary colored film adhering to the partition wall is finally removed by washing the partition wall at the same time. The inventors have found that the above problems can be solved, and have completed the present invention.

  That is, the present invention is a step of forming a resist layer by applying a photodegradable positive resist so as to cover at least the black matrix (BM) formed on the surface of the color filter (CF) substrate (step A), The step of exposing the resist layer from the back surface of the CF substrate (step B), the resist layer solubilized by the exposure is washed away, and separated by a hole wall (groove wall, partition wall) made of the resist layer remaining on the BM. Forming a hole space or groove space (hole) formed (step C), then forming a colored film by applying colored ink corresponding to CF pixels to the hole (step D), BM side The method for producing CF is characterized by comprising a step (Step E) of solubilizing and removing the partition wall made of the resist layer by exposing the substrate.

  In the present invention, the CF substrate is made of glass, plastic, or a plastic film for transfer or pasting; the positive resist used in step A contains a water-soluble resin and / or a water-swellable resin. That is, the positive resist layer thickness in step A is preferably 2 to 10 μm.

  In the present invention, the colored film is composed of three primary colors of red, green, and blue, or three primary colors of yellow, magenta, and cyan, and auxiliary colors of orange, green, and violet. Selected from the group consisting of: an inkjet printing method, a dispenser injection method, an electrostatic recording method, an electrophotographic method, a screen printing method, a thermal transfer printing method, a flexographic printing method, a gravure printing method, and an offset printing method. The color ink is an organic solvent-based ink, water-based ink, solvent-free ink, energy ray-curable ink, heat-meltable solid ink, or fine powder toner ink containing a pigment and a film-forming material. It is preferable that the viscosity of the colored ink is 1 to 40 mPa · s. .

  In the present invention, the pigment of the colored ink is C.I. I. Pigment Red 9, 97, 168, 177, 216, 224, 226, 242, 254; I. Pigment green 7, 36; I. Pigment Blue 15: 6, 160; C.I. I. Pigment violet 23; C.I. I. Pigment Yellow 20, 24, 83, 93, 109, 110, 113, 114, 117, 125, 138, 139, 150, 154, 180, 185; the red pigment and the yellow pigment, or the green pigment and the yellow pigment C. coprecipitated pigments, solid solution pigments or mixed crystal pigments; I. Pigment yellow 62, 74, 93, 155, 185; I. Pigment red 122, 146; I. Pigment violet 19; C.I. I. Pigment Blue 15: 3; Coprecipitation pigment, solid solution pigment or mixed crystal pigment of the above-mentioned yellow pigment and blue pigment, red pigment and purple pigment, or blue pigment and yellow pigment; and in the colored ink The average particle size of the dispersed pigment is preferably 10 to 100 nm.

  In the present invention, the color ink film-forming material is a non-reactive random, block and / or graft copolymer (hereinafter referred to as “copolymer”), a random having a reactive group, It is selected from the group consisting of a block or graft copolymer, a medium molecular weight oligomer having a reactive group, and a monomer having a reactive group and a crosslinking agent; the reactive group is a methylol group, an isocyanate group, an epoxy group It is preferably selected from the group consisting of oxetane group, vinyl group, (meth) acryloyl group, hydroxyl group, carboxyl group, amino group, imino group and reactive derivatives thereof.

  In the present invention, the CF substrate is a printing film for transfer or pasting, and the CF pixels formed on these substrates are transferred or pasted onto a glass CF substrate or a plastic CF substrate. A CF manufacturing method is provided.

  Further, the present invention provides a CF produced by the method of the present invention.

  The present invention also includes a step of applying a photodegradable positive resist to form a resist layer so as to cover at least the black matrix (BM) formed on the surface of the color filter (CF) substrate (step A), The step of exposing the resist layer from the back surface of the CF substrate (step B), the resist layer solubilized by the exposure is washed away, and separated by a hole wall (groove wall, partition wall) made of the resist layer remaining on the BM. There is provided a method for producing a CF substrate characterized by comprising a step (step C) for forming a formed hole space or groove space (hole), and a CF substrate produced by the method.

  The present invention also provides an image display device equipped with the CF of the present invention.

  In the present invention, in order to distinguish red, green, and blue as pigment colors, the three primary colors of red, green, and blue of the pixel, or the three primary colors of yellow, magenta, and cyan are “ R color, G color, B color, Y color, M color, C color, R color, G color, B color pixel or Y color, M color, C color These pixels may be collectively referred to as “pixels”. As the pixel group of the three primary colors of R, G, and B of CF or the pixel group of the three primary colors of Y, M, and C, known image arrangement patterns such as a stripe arrangement, a mosaic arrangement, and a triangle arrangement are available. used. As the CF substrate, glass, plastic and a plastic film for transfer or pasting are used depending on the purpose of use or usage.

  According to the present invention, in order to form a CF pixel, a positive resist is applied in a necessary thickness on a BM on a CF substrate in advance and exposed from the back surface (side without the BM) of the CF substrate. Then, the positive resist in the exposed portion is photodegraded except for the light-shielded BM portion, and this is washed and removed to develop a wall made of a positive resist layer having a required height on the BM portion. As a result, a gap surrounded by a wall having a required height on the BM can be easily and accurately created as a space for forming pixels.

  As described above, since the space (hole) for forming the CF pixel is a hole surrounded by a high partition wall, the colored ink filling the hole is coated with an appropriate pixel. The ink can be diluted with a solvent or water so that the colored ink can maintain sufficient fluidity, and necessary additives can be added. When forming the pixels, it is possible to fill the holes surrounded by the high partition walls with a necessary and sufficient amount of the colored ink and fill the corners of the holes with the colored ink. After filling, the solvent and water in the colored ink are removed by drying to form a colored film and cure the film. The partition walls that become unnecessary after the pixel formation are exposed again from the surface (BM side), washed away, and the BM returns to its original state. At this time, unnecessary colored films adhering to the partition walls are removed while the partition walls are removed.

  As described above, the manufacturing method of the CF of the present invention has a very rational manufacturing process, and the partition walls forming the pores filled with the colored ink do not use a pattern such as a photomask. It is constructed only by full exposure from the back side of the substrate and development process. Further, after the pixels are formed, the partition walls are removed by the entire exposure from the BM side (surface) and the cleaning removal. Thus, the method of the present invention is simple and simplified in process, and is very reasonable and economical. Further, the pixels obtained by using the high partition walls surrounding the holes have a uniform film thickness and a smooth surface, and therefore the dye density within and between the pixels can be made the same.

  In the present invention, the R, G, and B pixels of CF are simply and accurately formed in the pixel vacancies in the partition made of a positive resist. Problems such as time reduction, quality issues such as poor pixel printing resolution and positional accuracy, color mixing between pixels, surface smoothness, and uneven color density in the IJ method It was solved.

The figure explaining the state which apply | coated the positive resist 3 to the whole surface on CF substrate 1 in which BM2 was formed. The figure explaining the state which the ultraviolet exposure 4 is performed from the back surface of the CF substrate 1, and parts 5 other than BM are decomposed and solubilized. The figure explaining the state by which the solubilized part 5 was removed, the partition 6 consisting of a positive resist remained on BM2, and the void | hole 5 was formed. The figure explaining the state in which the colored ink of red 7, green 8, and blue 9 is sequentially filled in the holes separated by the partition wall 6 and the colored ink flows in the holes to form a flat ink liquid film. . The state where the colored ink layers 7, 8 and 9 are dried and cured to form the red film 7, the green film 8 and the blue film 9, exposed 10 from the surface side of the CF substrate 1, and the partition wall 6 is solubilized is explained. To do. The figure explaining CF in the state where the solubilized partition wall 6 is washed and removed with an alkaline aqueous solution, then the CF substrate 1 is washed and dried, and pixels of red 7, green 8 and blue 9 are formed.

Next, the present invention will be described in more detail with reference to preferred embodiments.
As shown in FIGS. 1 to 6, the CF manufacturing method of the present invention first applies a photodecomposition type positive resist so as to cover at least BM 2 formed on the surface of the CF substrate 1. 3 (step A), the step 4 of exposing the resist layer 3 from the back surface of the CF substrate 1 (step B), and the resist layer 5 solubilized by the exposure 4 is removed by washing and remains on the BM 2. A step (step C) of forming a hole space or groove space (hole 5) separated by the hole wall 6 (groove wall, partition wall) made of the resist layer 6, and then coloring the hole 5 corresponding to the CF pixel A step of forming a colored film by applying inks 7, 8, and 9 (step D), and a step of solubilizing and removing the partition wall 6 made of the resist layer by exposure from the BM2 side (step E). It is a feature.

  Examples of the positive resist used in the present invention and mainly characterizing the present invention include sulfonic acid esters or sulfonic acid amides of o-aromatic quinone-2-diazide as conventionally known quinonediazide compounds. For example, 1,2-naphthoquinone-2-diazide-5-sulfonyl chloride, 1,2-naphthoquinone-2-diazide-4-sulfonyl chloride, 1,2-benzoquinone-2-diazide-5-sulfonyl chloride and phenols And mono-polysulfonic acid amides with amines and mono-polysulfonic acid amides with amines.

  Examples of the phenols used for forming the sulfonate ester include phenol-formaldehyde novolak resin, o-chlorophenol-formaldehyde novolak resin, bisphenol A, trihydroxybenzophenone, tetrahydroxybenzophenone, and 2,7-dihydroxynaphthalene. Examples of amines used for sulfonic acid amide formation include amines such as rosin amine.

  The image formation with the positive resist will be described. The above-mentioned o-naphthoquinonediazides are sensitive to ultraviolet rays up to around 500 nm. The photodegradation mechanism when irradiated with ultraviolet rays is that the azide group of o-naphthoquinonediazide is decomposed by exposure to release nitrogen gas and ketene group, but it has a carboxyl group due to the presence of water. Convert to indenecarboxylic acid. By immersing in the developer, the exposed portion is dissolved and removed.

  An alkaline aqueous solution is used as a developer used for the development performed after the exposure, for example, trisodium phosphate, a mixed solution of trisodium phosphate and caustic soda, an inorganic alkaline aqueous solution such as sodium carbonate and sodium metasilicate, tetramethylammonium hydroxide, etc. And an organic alkaline aqueous solution.

  In the present invention, the physical strength of the partition formed by the positive resist is not so much needed, so a hydrophilic resin is added to the positive resist in order to improve the developability of the exposed portion with an alkaline solution. You can also Examples of the hydrophilic resin include polyvinyl alcohol, ethylene-vinyl alcohol copolymer, (meth) acrylic ester- (meth) acrylic acid copolymer, styrene- (meth) acrylic acid copolymer, polypropylene glycol-polyethylene glycol. Water-swelling properties such as water-soluble resins such as block copolymers, and (meth) acrylic acid copolymer cross-linked products, isobutylene-maleic acid cross-linked products and polystyrene-polyacrylic acid-polystyrene ternary block copolymers A hydrophilic resin selected from resins is preferred.

  In the CF, a BM is formed surrounding a pattern of three primary color pixels. The size of the pixel is determined by the design of the pixel designed according to the application of the CF, and is not particularly limited, and the pixel is designed with a conventionally used size. In general, the size of a pixel is normally 50 to 100 μm in width and 200 to 300 μm in vertical width and 20 to 30 μm in BM line width as an opening. Is as thin as 10 to 15 μm so that the opening for forming the pixel is wide. The film thickness of the BM is usually 0.1 to 0.2 μm for a chromium-based BM and 2 to 3 μm for a black resin-based BM.

  In the present invention, a partition made of a positive resist is formed on the BM of the CF substrate, but the height of the partition for forming a pixel forming hole is the solid content of the colored ink (colored film forming component). It is preferable to decide according to the content rate. When an ultraviolet curable colored ink (hereinafter sometimes referred to as “UV ink”) is used as the colored ink, the ink has a solid content (film forming component), an addition polymerizable oligomer and an addition polymerizable monomer. The ink can be reduced by adding a small amount of dilution medium, and sufficient fluidity can be imparted to the ink without relatively reducing the solid content (colored film component). . Therefore, the partition walls in the case of using UV ink as the colored ink need not be so high. When a thermosetting ink is used as the colored ink, since the ink uses a high molecular weight polymer as a film forming component, the ink may be sufficiently diluted to reduce the viscosity of the ink. It becomes necessary and the solid content of the ink is lowered by dilution. Therefore, it is necessary to make the partition wall sufficiently high.

  In order to determine the film thickness of the pixel, the relationship between the concentration of the solid content (pixel forming property) contained in the color ink used and the height of the BM overlaid with the partition wall depends on the solid content in the colored ink (pixel formation). If the component concentration is approximately 70% by mass, the height is at least twice the film thickness, if it is approximately 50% by mass, it is at least 3 times higher, and if it is approximately 30% by mass, it is at least 4 times higher. It is preferable to use as a guide. The dry film thickness of the positive resist needs to be thick, but the film thickness of the pixel is usually 1 to 3 μm, and the film thickness of the resist film partition is preferably about 2 to 10 μm practically. .

  In the present invention, since pixels are formed using colored ink having good fluidity using holes formed as set on the CF substrate, printing accuracy with the colored ink is not relatively required, and coloring is performed. As a method, a conventionally known coloring method can be used. These methods include, for example, (A) a plateless printing method (a printing method that does not use a printing plate) in which colored ink of each color is directly injected into each pixel formation hole to form a three-color pixel or BM. And (B) a method of printing the three primary color pixels or the BM through the holes of the corresponding pixels by using the respective printing plates of the three primary color pixels or the BM.

  As the printing method of (A), a conventionally known printing method, for example, a printing method such as an inkjet printing method, a dispenser injection method, an electrostatic recording method, an electrophotographic method, or the like is used, and as a printing method of (B), Screen printing, thermal transfer printing, flexographic printing, gravure printing, and offset printing are used.

  Colored inks used in the above printing methods include conventionally known organic solvent-based inks, water-based inks, solvent-free inks, energy ray curable inks, heat-containing inks, including pigments and film-forming materials that are compatible with the respective printing methods. A meltable solid ink or a fine powder toner ink is used.

  The material used for the colored ink used in the present invention will be described. The components constituting the color ink include a dye, a dye fixing agent (binder), and a silane coupling agent, a polymer dispersion aid, a dye dispersant, and a liquid medium that are added as necessary. As the dye, a pigment is particularly preferable from the viewpoint of excellent fastness such as heat resistance, light resistance and solvent resistance. When a pigment is used, a pigment fixing agent and a pigment dispersant are used.

  The pigments contained in the inks for R, G, and B pixels, Y, M, and C pixels and BM will be described. Organic pigments, dispersible dyes, oil-soluble dyes, water-soluble dyes, inorganic pigments, and the like are used as R, G, B, and Y, M, and C pixel dyes for CF. For example, in organic pigments, azo pigments such as insoluble azo, soluble azo, and high molecular weight azo, quinacridone red, quinacridone magenta, and other quinacridone pigments, anthraquinone pigments, perylene pigments, phthalocyanine blue, Conventionally known pigments such as phthalocyanine pigments such as phthalocyanine green, isoindolinone pigments, dioxazine pigments such as dioxazine violet, complex pigments such as quinophthalone yellow pigment, and nickel azo yellow can be used.

  As for the disperse dye, the oil-soluble dye, and the water-soluble dye, conventionally known dyes represented by the above structures as R color, G color, B color, Y color, M, and C color are used alone or in combination. Dyes are less robust than pigments depending on their chemical structure, but they have excellent optical properties such as sharpness, color tone, color transmittance, and contrast ratio. Is done.

  Many pigments are used as the above-mentioned pigments for forming the R, G, and B colors. Specific examples of typical pigments include C.I. I. Pigment Red (hereinafter referred to as PR) 9, 97, 168, 177, 216, 224, 226, 242, and 254, and C.I. I. CI pigment green (hereinafter referred to as PG) 7, 36, poly (12-16) bromophthalocyanine green, etc. as blue pigments such as C.I. I. Pigment Blue (hereinafter referred to as PB) 15: 6, 60, etc. I. Pigment Violet (hereinafter referred to as PV) 23 and the like as a yellow pigment such as C.I. I. Pigment yellow (hereinafter referred to as PY) 20, 24, 83, 93, 109, 110, 113, 114, 117, 125, 138, 139, 150, 154, 180, 185, etc. Examples thereof include a coprecipitation pigment, a solid solution pigment, or a mixed crystal pigment of a pigment and a yellow pigment or a green pigment and a yellow pigment.

  As pigments for forming Y color, M color, and C color, yellow pigments such as PY-62, 74, 93, 155, and 185, red pigments such as PR-122, 146, and PV-19, and blue pigments such as PB- 15: 3 and the like, and further, coprecipitation pigments of the above-described yellow pigment and blue pigment, red pigment and purple pigment, or blue pigment and yellow pigment, solid solution pigment, or mixed crystal pigment.

  A preferred pigment used in the present invention is a finely divided pigment. In the present invention, the powder fine pigment produced through the pigment synthesizing step and the pigmentation step, or a powder pigment that can be used for the use of a colorant for ordinary paints or synthetic resins, can be used in the fine particle step of the pigment. All the pigments used in are referred to as “coarse particle pigments”. As the fine particle pigment, for example, these coarse particle pigments are kneaded and ground together with a water-soluble salt and a water-soluble organic solvent having a boiling point of 150 ° C. or higher in a kneader, and the average particle diameter of the pigment is 10 to 100 nm, preferably Aqueous filter cake of finely divided pigment obtained by filtering and washing the pigment grind mass obtained by refining to 10 to 80 nm, and a finely divided pigment obtained by drying and pulverizing it, and aqueous polymer dispersion of the aqueous cake An aqueous pigment dispersion obtained by dispersing together with an agent or a processed pigment co-precipitated or kneaded with an easily dispersible polymer is used as a pigment for pigmented ink or a pigment processed product according to each printing method.

  Examples of the film-forming material used in the color ink include conventionally known non-reactive random copolymers, block copolymers, graft copolymers (hereinafter referred to as “copolymers”), and reactive groups. A binder having a copolymer, a medium molecular weight oligomer having a reactive group, a monomer having a reactive group, or a crosslinking agent. The reactive group is determined depending on the curing method of the colored ink, and conventionally known methylol group, isocyanate group, epoxy group, oxetane group, vinyl group, (meth) acryloyl group, hydroxyl group, carboxyl group, amino group, imino group and Examples thereof include reactive derivatives thereof.

  The film-forming polymer is a heat-drying type or heat-crosslinking type polymer, and is used in the form of a solvent solution, an aqueous solution, an emulsion, a latex, or a solid heat-meltable resin. The hydrophobic monomer constituting these film-forming polymers imparts film-forming properties to the polymer, and in organic solvent-type inks, acts as an amphiphilic group for organic solvents. Acts as a chromophoric group for the dye. Examples of these hydrophobic monomers include (esters having 1 to 30 carbon atoms) alkyl esters and cycloalkyl (4 to 20 carbon atoms) esters of α, β-ethylenically unsaturated carboxylic acids such as acrylic acid and methacrylic acid. , Aromatic cycloalkyl monomers such as alkylcycloalkyl (6 to 20 carbon atoms), ethylene, propylene, butylene, isobutylene, butadiene, isoprene, styrene, α-methylstyrene, vinylnaphthalene, etc. Examples of the macromonomer having a hydrophobic molecular chain include macromonomers in which an α, β-ethylenically unsaturated group is bonded to the above-described monomer having a hydrophobic group alone or to a copolymer chain.

  Examples of the hydrophilic monomer constituting the film-forming polymer include, for example, the above-mentioned α, β-ethylenically unsaturated carboxylic acid, vinyl sulfonic acid, styrene sulfonic acid and the like as a monomer having an anionic hydrophilic group; As a monomer having a nonionic hydrophilic group, 2-hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, polyethylene glycol (meth) acrylate, methoxypolyethylene glycol (meth) acrylate, (meth) acrylamide, etc .; cationic Examples of the monomer having a hydrophilic group include N, N-dimethylaminomethyl (meth) acrylate, N, N-diethylaminomethyl (meth) acrylate, 4-vinylpyridine and the like, and a macromonomer having a hydrophilic molecular chain. As the hydrophilic monomer shown above And a macromonomer in which an α, β-ethylenically unsaturated group is bonded to the above (co) polymer chain or a copolymer chain of the above hydrophilic monomer and hydrophobic monomer.

  Examples of the reactive monomer constituting the film-forming polymer include (meth) acrylic acid having a carboxyl group, maleic acid, 2-hydroxyalkyl having 2 to 6 carbon atoms (meth) acrylate having a hydroxyl group, and the like. Isocyanate groups such as glycidyl (meth) acrylate having an epoxy group, N-methylol (meth) acrylamide having a methylol group, N-methoxymethyl (meth) acrylamide, γ-methacryloxypropyltrimethoxysilane having a silane group, etc. Examples thereof include isocyanate ethyl (meth) acrylate and 2- (p-isopropenylphenyl) propyl (-2) isocyanate. As the macromonomer having a molecular chain having a group that reacts with a crosslinking agent, the above-mentioned reactive monomer (co) polymer chain or reactive monomer and the above-mentioned hydrophobic monomer are co-polymerized. Examples thereof include a macromonomer having an α, β-ethylenically unsaturated group bonded to a polymer chain.

  Examples of the crosslinking agent include trimethylolpropane polyglycidyl ether having an epoxy group, pentaerythritol polyglycidyl ether, etc .; methoxymethylolated melamine having a methylol group, butoxymethylol melamine, etc .; poly (hexamethylenecarbodiimide) diisocyanate and bis having a carbodiimide group Multi-branched polycarbodiimide, which is a urethane reaction product with monomethoxypolyethylene glycol and polyoxyethylene sorbite monolaurate, etc .; trimethylolpropane-tris (tolylene diisocyanate adduct) having an isocyanate group, trimethylolpropane-tris (hexa) And methylene diisocyanate adduct).

  Examples of the polymerizable film-forming material in the ultraviolet radical curable type, the photo cationic polymerization type, the electron beam curable type, and the thermal polymerization type ink include conventionally known addition double bonds or addition double crosslinkable unsaturated double bonds or polymerizable cyclic ether groups. Monomers, oligomers and / or polymers having are used.

  Examples of the above addition polymerizable oligomer and polyfunctional monomer include urethane acrylates such as (polytetramethylene glycol-hexamethylene diisocyanate polyurethane) -bisacrylate, bisphenol A epoxy resin-bisacrylate, and phenol novolac epoxy. Resin-epoxy acrylates such as polyacrylate, poly (hexylene isophthalate) -bisacrylate, (trimethylolpropane-adipic acid polyester) -acrylic oligomers such as polyester acrylates such as polyacrylate, tetraethylene glycol diacrylate Dipropylene of tripropylene glycol diacrylate, tricyclodecane dimethanol diacrylate, bisphenol A-ethylene oxide adduct Chromatography, tri triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate.

  Examples of the alicyclic diepoxy compound include 3,4-epoxycyclohexylmethyl (3,4-epoxy) cyclohexanecarboxylate and limonene dioxide, and examples of the oxatenic compound include oxaten alcohol, dioxetane, phenyl oxetane, and xylylene oxetane. , 2-ethylhexyl oxetane and the like; Examples of the vinyl ether compound include triethylene glycol divinyl ether and 1,4-cyclohexanedimethanol divinyl ether.

  A conventionally known initiator is used as the polymerization initiator. Preferred examples include, for example, benzyl ketal, α-hydroxyalkylphenone, α-aminoalkylphenone and the like as photopolymerization initiators; triarylsulfonium salts and aryliodonium salts as photocationic polymerization initiators; sensitization Examples of the agent include 1-chloro-4-propoxythioxanthone; examples of the thermal polymerization initiator include azobisisobutyronitrile, azobiscyanoisovaleric acid, dimethyl 2,2′-azobisisobutyrate, and the like.

  Furthermore, when a colored ink is applied to a glass substrate, the adhesion of the formed colored film to the glass substrate is improved by adding a silane coupling agent having a reactive organic functional group to the colored ink. Coating performance can be provided. As these compounds, conventionally known silane coupling agents are used. Examples of the reactive organic functional group include a silane coupling agent having an epoxy group, a thiol group, a hydroxyl group, an amino group, a ureido group, a vinyl group, an acryloyl group, and the like. Specifically, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, N-β- ( Aminoethyl) -γ-aminopropyltrimethoxysilane, γ-ureidopropyltriethoxysilane, vinyltriethoxysilane, vinyl-tris (β-methoxyethoxy) silane, γ-methacryloxypropyltrimethoxysilane, and the like.

  In the present invention, a low-viscosity ink that is sufficiently filled in the pixel forming holes surrounded by the partition walls on the CF substrate and can form a smooth pixel surface is used as the colored ink. The viscosity of the ink is 1 to 40 mPa · s, preferably 1 to 20 mPa · s, although it varies depending on the method of using the colored ink. In particular, the inkjet ink is preferably 1 to 10 mPa · s.

  The liquid medium used for adjusting the viscosity of the colored ink is an organic solvent in the case of oil-based colored ink, and water and a mixed solvent of water and a water-soluble organic solvent in the case of aqueous colored ink.

  Examples of the organic solvent include alcohols having 1 to 10 carbon atoms; alkylene glycols having 2 to 6 carbon atoms, polyalkylene (carbon numbers: 2 to 6) glycols, and monoalkyls (carbon number) of those glycols. : 1-10) ethers, dialkyl (carbon number: 1-10) ethers, monoalkyl (carbon number: 1-10) ether monoacylates; organic acid (carbon number: 1-6) alkyl (carbon number) : 1-6) esters; ketones such as methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; aliphatic hydrocarbon solvents such as alkane hydrocarbons (carbon number: 6 to 10), isopar, shell sol; cycloalkane (carbon Number: 6-10) and other alicyclic hydrocarbon solvents; aromatic hydrocarbon (carbon numbers: 7-10) solvents; N-methyl-2-pyrrolide , 2-pyrrolidone, and a nitrogen-containing solvent such as 1,3-dimethyl-2-imidazolidinone.

  The aqueous medium used in the water-based colored ink is water and a mixed solvent of water and a water-soluble organic solvent, and it is preferable to use deionized water such as ion-exchanged water or distilled water. Depending on the type of water-based ink, these water-based media are used in a neutral, alkaline, or acidic state. Examples of the water-soluble organic solvent used in the aqueous mixed solvent include conventionally known water-soluble organic solvents such as (carbon number: 1 to 3) alcohols, (carbon number: 2, 3) glycols, glycerin, Lower alkyl of polyhydric alcohols such as alkylene (carbon number: 2, 3) glycol alkyl (carbon number: 1-4) ether, polyalkylene (carbon number: 2, 3) glycol alkyl (carbon number: 1-4) ether Ethers: Nitrogen-containing solvents such as N-methyl-2-pyrrolidone and 2-pyrrolidone.

  The pigment used in the present invention is strictly required to have high definition, high transparency, high contrast ratio, etc. as a pigment for CF pixels. Ultimately, the pigment particle size has a molecular dispersion state. Although expected, it is practically 100 nm to 10 nm, preferably 60 nm to 10 nm, and more preferably 40 nm to 20 nm. Therefore, as described above, the pigment is finely divided in advance by, for example, a salt milling method. Furthermore, as a pigment disperser used for producing colored ink using a finely divided pigment, conventionally known vertical media dispersers such as ball mill and sand mill bead mill, horizontal media dispersers such as dyno mill and horizontal bead mill, roll mill, Examples include an ultrasonic mill and a high-pressure collision disperser. The pigment is subjected to a dispersion treatment by a method in which a dispersion treatment is performed a plurality of times using one of the above-mentioned dispersers or a method in which two or more dispersers are combined.

  As a method for obtaining a pigment dispersion having a desired particle size distribution, the size of the pulverizing media of the disperser is reduced, the filling rate of the pulverizing media is increased, the processing time is increased, and the discharge speed is decreased. Methods such as classification and separation with a filter or ultracentrifuge after pulverization are used. Or the combination of those methods is mentioned.

  In the present invention, CF is a method for directly forming a pixel on a glass CF substrate or a plastic CF substrate, and a transfer or pasting printing film on which a pixel is formed is transferred onto a glass CF substrate or a plastic CF substrate. Alternatively, by pasting, a CF having quality superior in terms of image performance such as sharpness, transparency, and contrast can be produced at a low cost. Furthermore, a downsized and upsized image display device equipped with the CF thus obtained is provided at low cost.

Next, the present invention will be described in more detail with specific examples. In the text, “part” and “%” are based on mass unless otherwise specified.
Example 1 (Preparation of CF substrate having partition walls formed on metal chromium BM)
A glass substrate for CF on which a low reflection chromium-based BM was formed was prepared. The BM has a width of 20 μm and an opening for a pixel having a length of 280 μm and a width of 80 μm. The positive resist was applied to the surface of the glass substrate on which the BM was formed with a coater so that the thickness after drying was 8 μm, and was blown and dried at 50 ° C. or less.

  The glass substrate coated with a positive resist was exposed to ultraviolet light from the back surface. Next, development was performed with a 3% aqueous solution of 3% phosphoric acid, washed with water, neutralized with a 1% aqueous solution of phosphoric acid, washed with water and dried. The partition wall height of the positive resist layer built on the BM was 8 μm. A CF substrate was prepared in which the opening surrounded by the partition walls had 280 μm long and 80 μm wide holes.

  The positive resist used above consists of 4 parts of ester obtained by reacting 1,2-naphthoquinone-2-diazide-5-sulfonyl chloride with o-chlorophenol-formaldehyde resin, 2 parts of novolak resin, 2 parts of oil-soluble phenol resin. , A resin composition containing 2 parts of a water-swellable resin composed of an acrylic acid-polystyrene macromonomer (6: 4) copolymer and 90 parts of ethylene glycol monomethyl ether in a solid content.

Example 2 (Preparation of a CF substrate having partition walls formed on a black resin mold BM)
A glass substrate for CF on which a black resin mold BM was formed was prepared. The thickness of the BM is approximately 2 μm, the width is 20 μm, and the openings for the pixels are 280 μm long and 80 μm wide. As in Example 1, the same positive resist used in Example 1 was applied to the surface of the glass substrate on which BM was formed with a coater so that the thickness after drying was 6 μm, and the air was blown at 50 ° C. or lower. Dried. The glass substrate coated with a positive resist was exposed to ultraviolet light from the back surface. Next, development was performed with a 3% aqueous solution of 3% phosphoric acid, washed with water, neutralized with a 1% aqueous solution of phosphoric acid, washed with water and dried. The height of the partition walls of the positive resist layer built on the BM was 8 μm including the BM, and a CF substrate having pores formed by these partition walls was prepared.

Example 3 (Production of CF by UV curable IJ printing method)
(A) Refinement treatment of used pigments As the pigments used, PR254 (red pigment-1), PR177 (red pigment-2), PG36 (green pigment-1), PY139 (yellow pigment-1), PY138 (yellow pigment) -2), PY150 (yellow pigment-3), PB15: 6 (blue pigment-1) and PV23 (purple pigment-1) were prepared, and these pigments were refined using crushed salt. In accordance with a conventional method, each pigment was charged into a kneader equipped with a pressure lid at a mass ratio of 1.7: 1.3 with crushed salt and diethylene glycol, and kneaded and ground for 7 hours. The obtained ground product was put into water, stirred to dissolve sodium chloride and diethylene glycol, filtered and washed with water to obtain each pigment press cake. The pigment content in each pigment presscake was 35-45%. The average particle size of the pigment was about 30 to 40 nm.

(B) Preparation of aqueous pigment resin dispersion (aqueous color base) Red pigment-1, red pigment-2, green pigment-1, yellow pigment-1, yellow pigment-2, yellow pigment- obtained in (a) above 3, 30 parts of the pigment press cake of Blue Pigment-1 and Purple Pigment-1 were taken as pure pigment, and 18 parts of each of the following aqueous resin pigment dispersant-1 were added. Ion exchange water was added to the moisture of each pigment press cake to make a total of 100 parts. After stirring for 2 hours with a dissolver and confirming that the mass of the pigment has disappeared, dispersion processing is performed with a horizontal media disperser “Dynomill 1.4 liter ECM type” (manufactured by Shinmaru Enterprises Co., Ltd.). An aqueous color was obtained. The average particle size of the water-based color dispersed pigments of each color was measured by a particle size measuring instrument N-4, and was about 30 to 40 nm. Hereinafter, the above-mentioned aqueous color corresponds to the number of the pigment used in the above (a), red aqueous color-1, red aqueous color-2, green aqueous color-1, yellow aqueous color-1, yellow aqueous color. -2, yellow aqueous color-3, blue aqueous color-1, purple aqueous color-1.

  The aqueous resin pigment dispersant-1 used above is benzyl methacrylate (BzMA) -ethyl methacrylate (EMA) -2-ethylhexyl methacrylate (EHMA) -2-hydroxyethyl methacrylate (HEMA) -methacrylic acid (MA) ammonium copolymer An aqueous solution (solid content 50%, solution medium; water: n-butanol (BA): isopropanol (IPA) = 3: 2: 1) of a coalescence (mass ratio; 30: 20: 20: 10: 20) .

(C) Preparation of powdery pigment resin composition (processed pigment) Take 95 parts of each of the eight aqueous colors of red, green, yellow, blue and purple obtained in (b) above, Thereto, 1.5 parts of the pigment synergist of each color and an additional 22.9 parts of the aqueous resin pigment dispersant-1 used in the above (b) were added, and the mixture was sufficiently stirred and mixed. Subsequently, a 10% dilute acetic acid aqueous solution was gradually added dropwise to each aqueous color while stirring to precipitate a colored resinous material containing a pigment. The precipitate was filtered, washed thoroughly with water, dried and pulverized. Powdered processed pigments each containing 60% of the pigment content were obtained. The pigment synergists used above are anionic pigment synergists in which 0.2 to 0.5 sulfone groups per molecule are introduced into the structure of each used pigment.

  The red processed pigment-1, the red processed pigment-2, the green processed pigment-1, the yellow processed pigment-1, the yellow processed pigment-2, and the yellow processed pigment corresponding to the pigment numbers used in the above (a). -3, blue processed pigment-1 and purple processed pigment-1.

(D) Preparation of R-color, G-color, and B-color ultraviolet curable inkjet (IJ) inks According to the number of blending parts shown in Table 1 below, the processed pigments of each color obtained in (c) above are converted into cationic polymers. A dispersant, an acrylated acrylic resin solution, and a mixed solvent of methyl isobutyl ketone (MIBK) -ethyl acetate (EAc) (mass ratio; 3: 2) were blended and stirred with a dissolver for 2 hours. After confirming this, dispersion processing was performed using a horizontal medium disperser. Filtration was performed with a membrane filter having a pore size of 5 μm. Before use, according to the recipe, polyacrylate monomer, HMMM, photopolymerization initiator and silane coupling agent were added to the dispersion and mixed well to prepare R, G and B solvent-based IJ inks. . When the average particle diameter of the pigment dispersion of each color was measured with a particle size measuring instrument N-4, it was about 40 nm. Each ink was uniformly applied to a polyethylene terephthalate film with a bar coater and dried. The ultraviolet curable ink coating film was cured by irradiation with ultraviolet rays. Each color showed excellent performance in optical properties such as sharpness, color purity, optical density, transparency and contrast.

  The cationic polymer dispersant used above is a graft polymer type dispersant in which polycaprolactone is partially amide-bonded to polyethyleneimine, and the acrylated acrylic resin solution is ethyl methacrylate (EMA) -butyl methacrylate ( BMA) -styrene (St) -2-hydroxyethyl methacrylate (HEMA) copolymer is a 40% MIBK-EAc mixed solvent solution of acrylic ester, and the polyacrylate monomer is dipentaerythritate hexaacrylate and trimethylolpropane. This is a monomer mixture of triacrylate (1: 1 by weight). As the silane coupling agent, 3-glycidoxypropyltrimethoxysilane was used, and as the photopolymerization initiator, Irgacure 369 and Irgacure 184 were used in combination (mass ratio: 4: 1, manufactured by Ciba).

(E) Manufacture of CF with UV curable IJ ink A piezo-type IJ printer was prepared for printing R, G, and B primary colors, and the R and G colors prepared in (d) above. A cartridge filled with B-color IJ ink was loaded. Using the CF substrate in which the partition was formed on the metal chromium BM prepared in Example 1, each color ink of R color, G color, and B color was ejected from the IJ printer head into the pixel forming holes of the substrate. Filled. Each color was printed and then dried, and then the surface of the CF substrate was exposed to ultraviolet rays to cure the ultraviolet curable colored film and to photodecompose the partition walls. According to a conventional method for cleaning and removing a positive resist, the partition walls are washed and removed by immersion in a 4% trisodium phosphate aqueous solution, neutralized with a dilute acid, washed with water and dried to obtain a CF on which colored pixels are formed. Obtained. The pixel films on the CF substrate were independent of color mixing, had non-uniform color density, had a smooth surface, and displayed three-color pixels with a clear mosaic pattern.

Example 4 (Production of CF with UV curable IJ ink)
In the manufacture of CF by the UV curable IJ printing method of Example 3, instead of the CF substrate having the partition walls of Example 1, a CF substrate having partition walls formed on the resin mold BM of Example 2 was used. In the same manner as in Example 3 (e), CF was manufactured using R, G, and B color IJ inks prepared in (d). The pixels on the CF substrate were independent of color mixing, had no uneven color density, had a smooth surface, and exhibited a three-color pixel with a clear mosaic pattern.

Example 5 (Preparation of CF with solvent-based IJ ink)
(A) Preparation of R-color, G-color, and B-color solvent-based IJ inks In accordance with the number of blending parts shown in Table 2 below, each color processed pigment obtained in Example 3 (c) was treated with a cationic polymer dispersant. Acrylic polymer-1 solution, HMMM solution, leveling agent and MIBK-EAc mixed solvent were mixed, stirred for 2 hours with a dissolver, and dispersed using a horizontal medium disperser. Filtration was performed with a membrane filter having a pore size of 5 μm. Before use, a silane coupling agent was added and mixed well to prepare R, G and B solvent-based IJ inks. When the average particle diameter of the pigment dispersion of each color was measured with a particle size measuring instrument N-4, it was about 40 nm. Each ink was uniformly applied to a polyethylene terephthalate film with a bar coater and dried. Each color showed excellent performance in optical properties such as sharpness, color purity, optical density, transparency and contrast.
The acrylic polymer-1 solution used above is a 40% MIBK-EAc mixture of EMA-BMA-St-HEMA copolymer (mass ratio; 35: 30: 20: 15, weight average molecular weight: about 30,000). The solvent solution, hexamethoxymethylmelamine (HMMM) solution is a 50% methanol solution.

(B) Production of CF by Solvent-Based IJ Printing Method A piezo-type IJ printer was loaded with a cartridge filled with the R, G, and B color IJ inks prepared in (a) above. A CF substrate formed with the partition walls prepared in Example 1 was prepared, and R, G, and B color inks were ejected from the IJ printer head into the pixel forming holes of the substrate and filled. Each color was printed and then dried. Next, the surface of the CF substrate was exposed to ultraviolet rays, and the partition walls were photolyzed. The partition walls were washed and removed by immersion in a 4% trisodium phosphate aqueous solution, neutralized with dilute acid, and washed with water. The coated film was baked and cured at 180 ° C. in a heat dryer to obtain a CF on which colored pixels were formed. The pixels on the CF substrate were independent of color mixing, had no uneven color density, had a smooth surface, and exhibited a three-color pixel with a clear mosaic pattern.

  In addition, a pixel pattern was similarly formed using a CF substrate having partition walls formed on the resin mold BM of Example 2 instead of the CF substrate having partition walls formed in Example 1 used above. The pixels on the CF substrate were independent of color mixing, had no uneven color density, had a smooth surface, and exhibited a three-color pixel with a clear mosaic pattern.

Example 6 (Preparation of aqueous IJ pigment ink)
(A) Preparation of R-color, G-color, and B-color water-based IJ inks According to the number of blending parts shown in Table 3 below, the aqueous color of each color obtained in Example 3 (b) was converted to an acrylic polymer-2 solution And ion-exchange water was mix | blended and the dispersion | distribution process was performed using the horizontal type medium disperser. Additives such as HMMM were added, stirred and mixed uniformly, and filtered through a membrane filter having a pore size of 5 μm to prepare R-color, G-color and B-color aqueous IJ inks. When the average particle diameter of the pigment dispersion of each color was measured with a particle size measuring instrument N-4, it was about 40 nm. Each ink was uniformly applied to a polyethylene terephthalate film with a bar coater and dried. Subsequently, it put into the heat dryer and the coating film was baked and hardened at 180 degreeC. Each color showed excellent performance in optical properties such as sharpness, color purity, optical density, transparency and contrast.

  The acrylic polymer-2 solution used above is an aqueous solution of MMA-EMAEHMA-St-Mac ammonium salt copolymer (mass ratio; 20: 20: 20: 10: 20: 10) (solid content 40%, solution) Medium: water: BA: IPA = 3: 2: 1).

(B) Manufacture of CF by aqueous IJ printing system In the same manner as in Example 3 (e), the R, G and B aqueous IJ inks prepared in (a) above were applied to the piezo three-color IJ printer. The filled cartridge was loaded. A CF substrate formed with the partition walls prepared in Example 1 was prepared, and R, G, and B color inks were ejected from the IJ printer head into the pixel forming holes of the substrate and filled. After each color was printed, it was dried, and then the surface of the CF substrate was irradiated with ultraviolet rays to photodecompose the partition walls. The partition walls were washed and removed by dipping in a 4% trisodium phosphate aqueous solution, neutralized with dilute acid, washed with water, and dried to obtain a CF on which colored pixels were formed. The pixel films on the CF substrate were independent of color mixing, had no uneven color density, had a smooth surface, and displayed three-color pixels with a clear mosaic pattern.

  In addition, a pixel pattern was similarly formed using a CF substrate having partition walls formed on the resin mold BM of Example 2 instead of the CF substrate having partition walls formed in Example 1 used above. The pixels on the CF substrate were independent of color mixing, had no uneven color density, had a smooth surface, and exhibited a three-color pixel with a clear mosaic pattern.

  The glass CF plates obtained in Examples 3 to 6 were coated with an overcoat layer on the entire surface in accordance with a conventional method, and an ITO transparent electrode film was formed by sputtering deposition to produce CF. A liquid crystal display was manufactured by mounting these CFs. Since these CFs are manufactured by a manufacturing method that is rational, economical, and can cope with an increase in size, a liquid crystal display for a monitor and a liquid crystal display for a television can be provided at low cost.

  According to the present invention, the manufacturing process is very streamlined, and a high partition made of a positive resist is formed on the BM of the CF substrate to surround the holes for pixel formation with a high wall. The volume of the holes can be increased, and even if a low-viscosity ink diluted with a medium is used as the colored ink, the holes for pixel formation can be filled in a sufficient amount to form pixels with sufficient color density. In addition, the unnecessary partition walls are photolyzed, washed and removed, and the BM returns to its original state.

  The obtained pixels have a uniform film thickness, a smooth surface, and a uniform dye density. Conveniently and accurately forming CF pixels, problems such as complexity of conventional processes, shortening of work time, pixel printing resolution and low position accuracy of printing methods, IJ method pixels Quality issues such as color mixing between surfaces, surface smoothness and color density non-uniformity are solved, and CF with excellent quality can be easily and economically achieved through a simplified process, and the size of the liquid crystal display can be increased. Thus, it is possible to provide a method of manufacturing a CF that can cope with downsizing.

1: CF substrate 2: BM
3: Positive resist 4: Exposure 5: Hole 6: Partition 7: Colored ink layer 8: Colored ink layer 9: Colored ink layer 10: Exposure

Claims (18)

  A step of forming a resist layer by applying a photodegradable positive resist so as to cover at least the black matrix (BM) formed on the surface of the color filter (CF) substrate (step A); A step of exposing the resist layer (step B), a resist layer solubilized by the exposure to be washed and removed, and a hole space or groove separated by a hole wall (groove wall, partition wall) made of the resist layer remaining on the BM A step of forming a space (hole) (step C), a step of forming a colored film by applying colored ink corresponding to the CF pixel to the hole (step D), and exposure from the BM side to form the resist A method for producing CF, comprising a step (Step E) of solubilizing and removing a partition wall.   The method for producing CF according to claim 1, wherein the CF substrate is made of glass, plastic, or a plastic film for transfer or pasting.   The method for producing CF according to claim 1, wherein the positive resist used in step A contains a water-soluble resin and / or a water-swellable resin.   The method for producing CF according to claim 1, wherein the thickness of the positive resist layer in step A is 2 to 10 μm.   2. The colored film is selected from the group consisting of three primary colors of red, green and blue, or three primary colors of yellow, magenta and cyan, and auxiliary colors of orange, green and violet. A method for producing CF described in 1.   The method for forming a colored film is selected from an inkjet printing method, a dispenser injection method, an electrostatic recording method, an electrophotographic method, a screen printing method, a thermal transfer printing method, a flexographic printing method, a gravure printing method, and an offset printing method. The manufacturing method of CF of description.   The colored ink is an organic solvent ink, water-based ink, solventless ink, energy ray curable ink, heat-meltable solid ink, or fine powder toner ink containing a pigment and a film-forming material. The manufacturing method of CF of description.   The method for producing CF according to claim 1, wherein the colored ink has a viscosity of 1 to 40 mPa · s.   The pigment of the colored ink is C.I. I. Pigment Red 9, 97, 168, 177, 216, 224, 226, 242, 254; I. Pigment green 7, 36; I. Pigment Blue 15: 6, 160; C.I. I. Pigment violet 23; C.I. I. Pigment Yellow 20, 24, 83, 93, 109, 110, 113, 114, 117, 125, 138, 139, 150, 154, 180, 185; the red pigment and the yellow pigment, or the green pigment and the yellow pigment C. coprecipitated pigments, solid solution pigments or mixed crystal pigments; I. Pigment yellow 62, 74, 93, 155, 185; I. Pigment red 122, 146; I. Pigment violet 19; C.I. I. 2. The CF pigment according to claim 1, which is a pigment blue 15: 3; a coprecipitated pigment, a solid solution pigment or a mixed crystal pigment of the yellow pigment and the blue pigment, a red pigment and a purple pigment, or a blue pigment and a yellow pigment. Production method.   The method for producing CF according to claim 1, wherein an average particle diameter of the dispersed pigment in the colored ink is 10 to 100 nm.   The film forming material of the colored ink is a non-reactive random, block and / or graft copolymer (hereinafter referred to as “copolymer”), a random, block or graft copolymer having a reactive group, a reaction The method for producing CF according to claim 7, which is selected from the group consisting of a medium molecular weight oligomer having a reactive group, a monomer having a reactive group, and a crosslinking agent.   The claim wherein the reactive group is selected from the group consisting of methylol group, isocyanate group, epoxy group, oxetane group, vinyl group, (meth) acryloyl group, hydroxyl group, carboxyl group, amino group, imino group and reactive derivatives thereof. 11. A method for producing CF according to 11.   The CF substrate according to claim 1 is a printing film for transfer or pasting, and the CF pixels formed on these substrates are transferred or pasted onto a glass CF substrate or a plastic CF substrate. Manufacturing method.   A CF manufactured by the method according to claim 13.   A CF manufactured by the method according to claim 1.   A step (step A) of forming a resist layer by applying a photodegradable positive resist so as to cover at least the black matrix (BM) formed on the surface of the color filter (CF) substrate; Step of exposing the resist layer (step B), removing the resist layer solubilized by the exposure, and removing the hole space or groove separated by the hole wall (groove wall, partition wall) made of the resist layer remaining on the BM A method for manufacturing a CF substrate, comprising a step (step C) of forming a space (hole).   A CF substrate manufactured by the method according to claim 16.   An image display device equipped with the CF according to claim 14.

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