JP2602323B2 - Manufacturing method of color filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention is used for a color television, a camera, and the like.
The present invention relates to a method for manufacturing a color filter for color separation in which a plurality of colors are formed in stripes on a substrate. More specifically, a pattern called a stripe filter or matrix can be formed with high quality by a simple operation,
Also, the present invention relates to a method for manufacturing a color filter capable of forming a black light absorption band between each color pixel of a color filter called a black matrix by a simple operation that does not require alignment.

(Prior art and its problems) A color filter is one in which two or more fine bands of different hues are arranged in parallel or intersecting on a substrate such as glass (stripe), or fine pixels are arranged vertically and horizontally. They are arranged in a fixed arrangement (matrix). The width of the stripe is several μm, and the pixels of the matrix have a fine shape of several tens to several hundreds μm in length and width, and are arranged in a predetermined order for each hue. For this reason, various methods for producing a color filter have been proposed in the past, but none of these methods tended to lower the productivity or were of a satisfactory quality.

The printing method in which each color pixel such as a stripe is formed by offset printing, screen printing, or the like, is liable to cause minute irregularities and thickness unevenness on the surface of each pixel, and printing so that the outline of each color pixel does not overlap. Because it is difficult, within each pixel and
It has a drawback that it is difficult to maintain a uniform light transmittance by keeping the entire surface of the color filter on a smooth surface.

In the photolithography method, a process of forming a pixel by dyeing after obtaining a required pattern shape by exposure and development from a dyeable photosensitive film applied on a substrate such as glass is repeated for each color, or a pigment is formed. A method of manufacturing a color filter by forming colored pixels in the required pattern shape from the photosensitive film that contains it, but this method requires many steps, such as the need for anti-staining treatment to the next color dye on the pixels after dyeing. Takes
There is a disadvantage that productivity is poor.

The electrodeposition method is a method of forming colored pixels by electrophoresis from a solution in which a pigment and a resin are dispersed on a transparent substrate in which a transparent electrode is formed in the shape of a pixel. Poor reproducibility due to lack of stability over time of dispersion solution of
Due to the flow of the electrophoresed pixels, there are drawbacks such that it is difficult to make the shape of the pixels uniform, and it is necessary to perform anti-staining treatment for the next color staining.

In addition, a method in which a porous metal oxide is vapor-deposited on a substrate and dyed and then sealed, a method in which an interference filter obtained by vapor-depositing a metal oxide in multiple layers on a substrate, and the like have been proposed. However, there is a disadvantage that the productivity is low due to a complicated process and the production cost is high.

Next, in order to improve the color purity and contrast of the color filter, and in the case of a color liquid crystal display element or the like driven by a thin film transistor, to prevent dark current due to stray light to the driving section, a black pixel is formed between colored pixels. It is widely practiced to provide a light-shielding portion (black matrix) such as. This means is basically the same as the method of forming a colored pixel, except that a metal such as chromium, a sublimable dye and a pigment are vapor-deposited and patterned, and a photolithographic method is used to form a pattern around the colored pixel. A method of making a pattern dyed with a dye such as black, or a method of patterning a resin layer containing a pigment of black or the like, a method of printing an ink containing a pigment of black or the like by a screen printing method, an offset printing method, There is known a method of providing a silver salt-containing layer, exposing and developing to black, and the like. However, this method requires equipment for vapor deposition and a step of finely patterning the vapor-deposited material, so that the cost tends to be high and productivity tends to be poor. The method of providing a photoresist and exposing only the part to be dyed by pattern exposure and development, or a step of patterning a resin layer such as black to a required shape, etc. is required, and the number of steps is large. However, there is a disadvantage that it takes much time and is inferior in productivity. In the method (1), it is difficult to form a frame of a minute width of black ink or the like at a precise position around a colored pixel with a uniform contour. In this case, by increasing the width of the frame, the uniformity of the contour is improved, but there is a problem that the number of exposed pixels is reduced and the light transmittance of the color filter is reduced. Are disclosed in JP-A-62-141502 and JP-A-63-141502.
No. 123002. The former is a method of forming a black matrix by bringing a silver halide material into close contact with a pixel portion and performing mask exposure and tanning development.The latter is a method of exposing a layer in which silver particles are dispersed in gelatin between pixels. Developing and forming a layer containing blackened silver. In both cases, the use of a silver salt material tends to increase the cost.

Unlike the above method, instead of the photolithography method, the black stripe is dyed afterwards, that is, after forming an easily dyeable transparent layer on the substrate and forming a large number of colored pixels thereon, coloring is performed. A method of dyeing a transparent resin layer between pixels in black to form a black stripe is disclosed in
No. 63-147104. However, in this publication, only a printing method, a dyeing method, and an electrodeposition method are used as methods for forming colored pixels, and as described above, each method requires a large number of steps, requires much time, and is inferior in productivity. And it is difficult to obtain a smooth surface.

(Problems to be Solved by the Invention) The problem to be solved by the present invention is to solve the above-mentioned drawbacks of the prior art, and to form a low-cost, high-quality black matrix with simple operations and steps. It is to provide a manufacturing method of.

[Configuration of the invention]

(Means for Solving the Problems) The present invention provides an easily dyeable transparent resin layer provided on a substrate,
Arbitrary arrangement and spacing, after forming a plurality of colored pixels of a plurality of colors, in the method of manufacturing a color filter to be a light-absorbing layer by dyeing the area of the resin layer where the colored pixels are not laminated to black or the like, The formation of the colored pixels includes pattern exposure of radiation to a photosensitive sheet comprising a transparent support sheet A and a support sheet B and an ink layer containing a radiation curable resin and a colorant provided between the two sheets; A method for producing a color filter, comprising sequentially transferring the uncured colored pixels on the support sheet A obtained by peeling and developing the sheet to the transparent resin layer for each color from the uncured colored pixels.

 Hereinafter, the present invention will be described in detail.

As shown in FIG. 1, stripe-type color filters used in liquid crystal color televisions and solid-state imaging devices generally show the three primary colors of light, red, green, and blue (hereinafter referred to as R, G, and B, respectively). Are arranged accurately on a transparent substrate in a certain shape, arrangement and interval. That is, three colors are alternately arranged in a vertical line in a certain order. On the other hand, the matrix type color filter is a filter in which adjacent pixel columns are shifted from each other one by one on a transparent substrate as shown in FIG. The present invention can of course be applied to a color filter composed of colored pixels other than the three primary colors described above, but a matrix type color filter of three primary colors will be described below.

In the present invention, the term “radiation” refers to those having active energy for curing a radiation-curable resin such as an ultraviolet ray, an electron beam, and a γ-ray.

The photosensitive sheet in the present invention is obtained by applying and drying an ink layer containing a radiation-curable resin and a pigment on a support sheet B, and then pressing the support sheet A at room temperature or under heat.

The uncured colored pixels on the support sheet A are subjected to pattern exposure to radiation on the photosensitive sheet, and then the support sheet B is peeled off at an obtuse angle to the support sheet A and, if necessary, with heating. The ink layer of the cured pattern portion is obtained by holding the entire or a part of the ink layer in the thickness direction on the support sheet A, and holding the photocured pattern portion of the ink layer on the support sheet B. At this time, in order to hold the photocured pattern portion on the support sheet B, the adhesive force of the photocured pattern portion to the support sheet at the time of peeling must be larger in the support sheet B than in the support sheet A. Is a necessary condition, which is satisfied by taking a step of coating and drying the ink layer on the support sheet B and then laminating the support sheet A. Further, in order to hold the ink layer of the uncured pattern portion on the support sheet A, the support sheet B is peeled off at an obtuse angle while the support sheet A is held flat, so that the adhesive force of the uncured portion acting upon peeling is reduced. The support sheet A is larger than the support sheet B. Further, by heating the photosensitive sheet to about 60 to 120 ° C. at the time of peeling, break separation occurs in the uncured ink layer, and a part of the uncured pattern portion of the ink layer is transferred to the support sheet A. You may.

The support sheet A and the support sheet B may be made of the same material. When the support sheet A and the support sheet B are made of the same material, the support sheet B is subjected to corona treatment, or the support sheet A is coated with a release agent to form an ink layer. The difference in adhesive strength between the support sheet B and the support sheet A may be enhanced.

The radiation pattern exposure for forming pixels may be performed from either the support sheet A side or the support sheet B side.

The support sheet A on which the colored pixels containing the uncured radiation-curable resin prepared in the above-described steps are placed, and the easily-dyeable transparent resin layer provided on the base by means of coating or the like, at room temperature. The substrate is press-bonded or heat-pressed, and the entire surface is cured by radiation, then peeled off, and the colored pixels are transferred to obtain a substrate on which an easily-dyeable transparent resin layer on which dye-resistant cured colored pixels are laminated is placed. At this time,
The support sheet A and the transparent resin layer may be separated, and the entire surface may be radiation-cured after transferring the colored pixels. However, when the latter peels the support sheet A, the breakage easily occurs in the uncured radiation-curable resin layer that is the colored pixel, whereas the former can be peeled from the interface between the support sheet A and the colored pixel. There is an advantage that it is easy to ensure uniformity of the transfer amount and smoothness of the transfer surface. A smooth colored pixel surface is effective in preventing light diffusion and improving contrast.

Irradiation to the entire surface before dyeing cures uncured colored pixels by radiation, improving anti-staining and scratch resistance to the next dyeing process, etc., but heat-cured uncured colored pixels The same effect can be obtained by doing so. However, at this time, heat is also applied to the transparent resin layer, and depending on the resin used and the curing temperature conditions, the degree of polymerization may increase or the dyeability of the transparent resin layer may decrease due to curing. It is. Further, when the support sheet A on which the colored pixels are placed and the easily dyeable transparent resin layer are thermocompression-bonded, it is necessary to set heating conditions so that the dyeability of the transparent resin layer does not decrease. is there.

On a substrate on which a cured colored pixel and a transparent resin layer are laminated,
After sequentially transferring the colored pixels of each color from the support sheet A on which the colored pixels of each color are placed, the colored pixels are dyed with a solution containing a dye such as black to form black stripes. At this time, since the colored pixels are used as a mask at the time of dyeing the transparent resin layer, registration for forming a black stripe is not required. Further, pinholes and the like in the pixel generated at the time of transfer due to dust or the like can also be dyed.
A decrease in contrast and color purity can also be prevented.

The easily-dyeable transparent resin layer used in the present invention is a solution containing a dye such as black, and can be easily dyed, such as a natural polymer such as glue, gelatin, and casein, and polyvinyl alcohol, which is partially acetalized. Polyvinyl formal or polyvinyl butyral, polyamide resin, polyester resin, acetate resin, polyacrylonitrile resin, polyvinyl chloride resin, polyvinylidene chloride resin, and modified products thereof can be used alone or in combination. It is preferable to select a material that has good adhesiveness to a colored pixel, can form a film on a substrate such as a glass substrate, and has good heat resistance. In addition to the above resins, a resin having good dyeing properties may be used alone or as a mixture, and a transparent resin layer for improving the adhesion between the easily dyeable transparent resin layer and the substrate may be provided below. It may be provided as a pull layer.

As the dyes such as black used in the present invention, acid dyes, acid mordant dyes, metal complex dyes, disperse dyes, direct dyes, basic dyes, sulfur dyes, vat dyes, naphthol dyes, vat dyes, etc. A metal complex dye which can be used in combination with the resin of the resin layer, but can be dyed by an easy procedure, has a high light-absorbing ability, and has high fastness is preferable.

The resin used in the photosensitive sheet of the present invention is polymerized by irradiation, cured by a reaction such as crosslinking, dimerization, and the like, and as a result, is blended so as to reduce the adhesive force to the support sheet A, It is a composition mainly composed of a radiation-curable resin.

The radiation-curable resin used in the present invention is roughly classified into two types: a radical polymerization type having a polymerizable double bond and a cationic polymerization type having an epoxy group.

Examples of radiation-curable resins of the radical polymerization type include bases having at least one reactive group such as -OH group, -COOH group or an anhydride thereof, -NH ₂ group, or epoxy group in a part of the resin structure. Unsaturated compounds having reactivity with polymers and these groups, such as (meth) acrylic acid, N-methylol cinnamate, acrylamide, 2-hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, isocyanatoethyl (meth) Acrylate,
Examples thereof include those obtained by reacting glycidyl (meth) acrylate or the like. Base polymers include alkyd resin, saponified vinyl chloride-vinyl acetate copolymer, polyvinyl alcohol, urethane polymer, vinyl chloride-vinyl acetate copolymer, amino resin, polyamide, epoxy resin, acrylic copolymer, cellulose Derivatives, maleated polybutadiene and the like can be exemplified.
In addition, unsaturated polyesters having an unsaturated double bond in the resin skeleton, diallyl (iso) phthalate polymers having a residual double bond, and the like can also be suitably used.

Further, a polymerizable unsaturated monomer or oligomer that increases the crosslinking reactivity of these radiation-curable resins may be mixed and used. Examples of monomers and oligomers include polyol poly (meth) acrylate, epoxy acrylate, phthalic acid, pyromellitic acid, phosphoric acid, and a reaction product of poly (acid) such as triisocyanuric acid and hydroxy (meth) acrylate, triallyl isocyanurate, diallyl. Allyl compounds such as (iso) phthalate, other UV / EB
Monomers and oligomers described in Curing Handbook (published by Kobunshi Kanbunkai, edited by Kato Kiyomi) can be used.

When a monomer or an oligomer is used, the polymer does not necessarily have to have a polymerizable double bond, and a polymer which is thermally cured by heating after dyeing the transparent resin layer can be used. Examples of such a resin include an epoxy resin and an amino alkyd resin.

When a radiation-curable resin composed of a polymerizable unsaturated compound is subjected to a reaction such as polymerization or cross-linking by ultraviolet rays, a photopolymerization initiator and an accelerator may be added. As the photopolymerization initiator, benzophenone, methyl orthobenzoylbenzoate, 2,4 dimethylthioxanthone, 2-methyl-1-
[4- (methylthio) phenyl] -2-morpholinopropanone-1, tetra (t-butylperoxycarbonyl)
Benzophenone, benzyl-2-hydroxy-2-methyl-1-phenyl-propan-1-one, 4,4'-bisdiethylaminobenzophenone and the like can be used. Various amine derivatives such as dimethylethanolamine and p-dimethylaminobenzoic acid can be used as the accelerator. When an electron beam or γ-ray is used, or when a cinnamate-based radiation-curable resin is used, the initiator need not be used. In addition, when considering storage stability, a small amount of a polymerization inhibitor may be added.

Examples of cationically curable radiation-curable resins having an epoxy group include bisphenol-type epoxy resins,
Various epoxy compounds such as a novolak type epoxy resin, an alicyclic epoxy resin, an epoxy resin obtained by epoxidizing an unsaturated resin with peracetic acid, and a copolymer of glycidyl (meth) acrylate and another vinyl monomer can be exemplified. . In addition to these epoxy resins, vinylcyclohexenedioxide, bis (3,4-epoxycyclohexyl)
Adipate, neopentyl glycol diglycidyl ether, phenyl glycidyl ether, sorbitol polyglycidyl ether, glycidyl (iso) phthalate,
Liquid or solid low molecular weight epoxy compounds such as 1,3-diglycidyl-5,5-dimethylhydantoin, triglycidyl isocyanurate, glycidyl phthalimide, hydroquinone diglycidyl ether, bisphenol S diglycidyl ether, and compounds that react with epoxy groups For example, an alcohol compound or an amino compound can be used in combination.

As an initiator for radiation polymerization of epoxy compounds, [In the formula, φ- and -φ- represent phenyl and phenylene, respectively, and X represents PF ₆ , Sb ₆ , BF ₆ , and AsF ₆ . ] Can be used as a catalyst.

The above-mentioned radical polymerization type radiation-curable resins may be mixed and used.

The material used for the color filter can be selected from pigments and dyes having a hue according to the purpose.
Examples of pigments that can be used for red, green, and blue colors include the following. (CI indicates Color Index.) CI red pigment 97, 122, 149, 168, 177, 180, 192, 21
5 CI green pigment 7, 36 CI blue pigment 15, 15: 1, 15: 4, 15: 6, 22, 60, 64 In addition, oil-soluble dyes and alcohol-soluble dyes can also be used.

For dispersion of the pigment and the dye into the radiation-curable resin, various dispersing means such as a three-roll mill, a two-roll mill, a sand mill, and a kneader can be used. When it is necessary to adjust the viscosity to a suitable one for each dispersing means, It is preferable to dilute with a solvent having a boiling point of about 140 ° C. or lower. In addition, a dispersing aid can be appropriately added.

Various surfactants can be used as the dispersing aid, but they have a problem in water resistance, and therefore, a formula (1) which is a derivative of a dye or a pigment shown in Examples described later is used. (Where D is a residue of a dye or pigment, X is a divalent group,
R ₁ and R ₂ may be each independently a hydrogen atom alkyl group, an aryl group, or a group in which R ₁ and R ₂ are taken together to form a heterocyclic ring with a nitrogen atom. N represents an integer of 1 to 4. )) Are preferred.

This dispersing aid is excellent in dispersing effect of dye or pigment, and has an effect of preventing re-aggregation after dispersion,
A color filter having excellent transparency can be obtained.

The application of the radiation-curable resin solution in which the pigment and / or the dye is dispersed to the support sheet may be performed by means such as a gravure reverse coater, a lip coater, and a knife coater. The nonvolatile content in the coating solution may be appropriately selected depending on the desired coating thickness and the type of coater, and the coating thickness after drying is 0.5 to 4 μm, preferably 1 to 2 μm.

The support sheet is preferably made of a material that is stable to heat, chemicals, light, and the like and that transmits radiation. For example, it is a film of polyethylene terephthalate, triacetate, cellulose acetate, polystyrene, polyvinyl chloride, polycarbonate, polyimide, or the like. Especially polyethylene terephthalate film, transparency, heat stability,
It is preferable because it has excellent adhesiveness. These sheets may be used as they are, or may be subjected to appropriate primer treatment, corona discharge treatment, or low-temperature plasma treatment. As the support sheet, a film having a thickness of 10 to 100 μm is preferably used.

FIG. 3 shows that the ink layer 2 containing the adhesive is
FIG. 3 shows a cross-sectional view of a photosensitive sheet provided in (1) and laminated with a support sheet A (3).

Here, the support sheet A (3) is a support sheet B (1).
It is not necessary to provide immediately after the ink layer 2 is applied. The adhesive has a weak adhesive force with the ink layer 2 and is easy to peel off, and has a function of preventing adhesion of dust and preventing oxygen inhibition during radiation curing. The sheet can be provided first. After or before the ink layer 2 is cured into a predetermined pattern by irradiation with radiation, the protective sheet is peeled off, and then the support sheet A may be pressure-bonded at room temperature or heat and pressure. The radiation irradiation surface may be on either side of the protective sheet or the support sheet B,
In order to increase the difference in adhesion between the cured portion and the uncured portion of the ink layer on the support sheet B, it is preferable that the ink layer is on the protective sheet side. The above protective sheet is made of polyethylene having a thickness of 5 to 40 μm, PE treated with a release agent,
It is preferable to use a film such as T.

The pattern mask used in the present invention depends on the radiation source used. For example, when using ultraviolet rays, the pattern portion to be transferred must not substantially transmit the ultraviolet rays, and the other parts must transmit the ultraviolet rays. Silver halide film,
There are diazo films and the like. In the case of using a radiation source having a high transmission power such as an electron beam or a γ-ray, a pattern may be formed on a metal foil laminated on a PET film or the like by an etching method and used as a mask. Further, instead of using a mask, an electron beam or an ultraviolet ray focused on a narrow beam may be scanned in a plane, and a pattern may be directly drawn on the photosensitive sheet to be cured.

In order to accurately transfer the support sheet A, which is obtained by radiation-curing the ink layer of the photosensitive sheet and leaving a predetermined uncured pattern portion, to a predetermined position of the easily dyeable transparent resin layer provided on the substrate, , Register mark method, punching method, etc.
Known means can be used.

Hereinafter, the present invention will be described based on examples. In the examples, “parts” means “parts by weight”.

Example 1 Photosensitive sheets of red, green, and blue were produced.

Epicron N-6 (Novolak epoxy resin, trade name, manufactured by Dainippon Ink and Chemicals, Inc.) 900 parts Epicoat 1001 (epoxy resin, trade name, manufactured by Shell Chemical Company) 600 parts Diethylene glycol monoethyl ether 800 parts Ethylene glycol monobutyl ether 200 parts A solvent was prepared (hereinafter referred to as varnish A), and varnish A and pigments of each color of red, green and blue were blended according to the following formulation, and the mixture was kneaded with three rolls.

Paste formulation for red filter Pigment 22 parts of a mixture of 70 parts of Rionogen Red GD (CI Pigment Red 168, manufactured by Toyo Ink Co., Ltd.) and 30 parts of Rionogen Orange (CI Pigment Orange 36, manufactured by Toyo Ink Mfg.) 2.2 parts of the compound Varnish A 75.8 parts Total 100 parts Paste formulation for green filter Pigment 75 parts of Lionol Green 2YS (CI Pigment Green 36 manufactured by Toyo Ink Mfg.) And 25 parts of Lionogen Yellow 3G (CI Pigment Yellow 154 manufactured by Toyo Ink Mfg.) Mixture 22 parts Dispersing aid 1.4 parts of low chlorinated copper phthalocyanine derivative of the following formula Varnish A 75.8 parts Total 100 parts Paste formula for blue filter Pigment 80 parts of Lionol Blue ES (CI Pigment Blue 15: 6, manufactured by Toyo Ink Manufacturing Co., Ltd.) and 20 parts of Lionogen Violet RL (CI Pigment Violet 23, manufactured by Toyo Ink Manufacturing Co., Ltd.) 12 parts of a mixture with a dispersion aid 0.6 part of a copper phthalocyanine derivative of the following formula Varnish A 87.4 parts Total 100 parts For each 100 parts of the paste formulation for each color filter, 30 parts of dipentaerythrol hexaacrylate (hereinafter referred to as DPHA) and 30 parts of Irgacure 907 (polymerization initiator, trade name of Ciba Geigy) 3.8 Department, Triol 1
50 parts and 150 parts of methyl ethyl ketone (hereinafter referred to as MEK) were added and mixed well to prepare a coating liquid for an ink layer.

Then, the transparent PET film (support sheet B) having a thickness of 12 μm is coated with a gravure reverse coater and dried with hot air so as to have a coating thickness of 2 μm after drying. By laminating a transparent PET film (support sheet A) without treatment on the ink layer, photosensitive sheets of each color were produced.

Next, Denka Povar K-17E (manufactured by Denki Kagaku Kogyo Co., Ltd.
After adding 15 parts of polyvinyl alcohol to 85 parts of water and then heating to dissolve it, an aqueous solution is applied on a clean glass substrate with a wire bar so that the coating liquid thickness after drying becomes 1 μm. After drying, an easily dyeable transparent resin layer was formed on a glass substrate.

Using a silver halide film for plate making, a photomask having a pattern shown in FIG. 5 was produced. In the figure, 4 indicates a radiopaque portion, and 5 indicates a radiolucent portion.

Exposure of 100 mJ (hereinafter referred to as mj) was performed from the side of the support sheet B of the photosensitive sheet for the red filter using an ultraviolet exposure apparatus (manufactured by Oak Manufacturing Co., Ltd., equipped with a high-pressure mercury lamp of 3 KW). After the exposure, the support sheet B was peeled off at an obtuse angle to form a pattern of an uncured ink layer on the support sheet A, and pressed on the glass substrate by a laminator heated to 80 ° C. Subsequently, the entire surface was exposed at 200 mj from the side of the support sheet A, and the ink layer was photo-cured. Then, the support sheet A was peeled off, and the transfer of the red ink layer was completed.

Hereinafter, the photosensitive sheet for the green and blue filters is transferred in the same procedure on the glass substrate on which the easily dyeable transparent resin layer is laminated, so that the three colors have the color arrangement shown in FIG. Was prepared. However, in the transfer operation for the second and subsequent colors, the shift of one pixel of the register mark is accurately performed while looking through the magnifying lens so that the patterns do not overlap with each other and the gap between the patterns is constant. Later, heat transfer was performed to make a color filter with three color pixels.

The above-mentioned color filter was immersed in the staining solution (A) described below, and the gap between each color pattern was dyed black.

Staining solution (A) Kayaran Black 2RL (CI Acid Black 155, manufactured by Nippon Kayaku Co., Ltd.) 3.2 parts Acetic acid 1.0 part Ammonium acetate 5.0 parts Leveling agent 3.0 parts Water was added in total 100 parts After dyeing black, wash thoroughly with water And dried to produce a color filter in which black stripes were formed between pixels of each color.

Example 2 25 parts of Bakelite ERL 4221 (manufactured by Union Carbide Co., Ltd., fat-dry epoxy), 100 parts of the paste formulation for each color filter prepared in Example 1, 25 parts of UVR-6
351 (manufactured by Union Carbide, reaction diluent) 5 parts, resin catalyst FC-520 (manufactured by 3M, ultraviolet polymerization initiator) 3 parts, Adeka Opton CP-66 (manufactured by Asahi Denka Co., thermosetting catalyst) 1 part, A coating solution was prepared by adding 200 parts of triol and 100 parts of MEK, and a three-color photosensitive sheet was prepared in the same manner as in Example 1.

Next, a mixture of 97 parts of Toresin-FS500 (manufactured by Teikoku Chemical Industry Co., Ltd., type 8 nylon) and 3 parts of hypophosphorous acid is dried on a clean glass substrate to give a coating liquid film thickness of 1 μm. As described above, after application with a wire bar and drying, an easily dyeable transparent resin layer was formed on a glass substrate.

In the same manner as in Example 1, heat transfer was performed from the photosensitive sheet to form a color filter on which pixels of three colors were mounted. The color filter was immersed in a dyeing solution (B) described below and dyed to obtain a color filter.

Dyeing solution (B) Anilon black AWN New Liquid (manufactured by Hodogaya Chemical Industry Co., Ltd.) 12 parts Ammonium acetate 0.5 part An appropriate amount of acetic acid and water are added to make a PH4 solution, and a total of 100 parts [Effect of the Invention] According to the present invention, A color filter having excellent productivity can be provided without requiring a developing step.

According to the present invention, there is provided a color filter in which each pixel is accurately arranged, alignment of each pixel is easy, and a black stripe can be manufactured without alignment.

According to the present invention, there is provided a color filter capable of providing a clear image such as a color television.

[Brief description of the drawings]

FIG. 1 is a stripe arrangement diagram of red, green, and blue color pixels, FIG. 2 is a matrix arrangement diagram of each color pixel, FIG. 3 is a cross-sectional view of a photosensitive sheet, and FIGS. The figure shows a photomask pattern. 1: Support sheet B, 2: Colored ink layer 3: Support sheet A, 4: Radiopaque part 5: Radiation transmissive part

Claims (2)

(57) [Claims] 1. An easily dyeable transparent resin layer provided on a substrate,
Arbitrary arrangement and spacing, after forming a plurality of colored pixels of a plurality of colors, in the method of manufacturing a color filter to be a light-absorbing layer by dyeing the area of the resin layer where the colored pixels are not laminated to black or the like, The formation of the colored pixels includes pattern exposure of radiation to a photosensitive sheet comprising a transparent support sheet A and a support sheet B and an ink layer containing a radiation curable resin and a colorant provided between the two sheets; A method for manufacturing a color filter, comprising transferring the uncured colored pixels on the support sheet A obtained by peeling and developing the sheet to the transparent resin layer for each color sequentially. 2. The method for producing a color filter according to claim 1, wherein the dyeing of the area of the transparent resin layer where the colored pixels are not laminated is performed with a metal complex dye.