JPH07104113A - Color filter and production thereof - Google Patents

Abstract

PURPOSE:To produce the color filter high in quality and low in cost in the completely dry treatment high in yield and capable of a cost down by forming a filter pattern on a base body by the coloring material layer which is melt- transferred by using a melt type heat transfer recording material. CONSTITUTION:A color filter base body 3 is mounted on the transfer device base body 5 having a vacuum sucking hole 4, and the surface of the coloring material layer of the light heat transform type heat mode recording material 2 having larger dimention in length and breadth than this base body 3 is laid over the base body 3, and by evacuating the recording material part buldged out from around the base body 3 through the vacuum sucking hole 4, the base body 3 and the recording material are adhered closely. For example, in the case of the pattern corresponding to red filter, by condensing a laser beam on the surface of the coloring material layer of the recording material having a red coloring material layer, the coloring material layer is formed on the base body 3 by a melt transfer. In the case of this melt transfer, it is necessary to adhere closely the recording material 2 and the color filter base body 3, it is preferable that evacuation is executed effectively and the use of the recording material easy to adhere.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing method effective for cost reduction of color filters for liquid crystal display devices, color solid-state image pickup devices, contact image sensors and the like, and a color filter provided thereby.

[0002]

2. Description of the Related Art A liquid crystal moving image display color filter has three primary colors of red, green and blue formed between black regions on a transparent substrate provided with a black region having a constant width for enhancing display contrast. A pixel is one picture element and is composed of many picture elements.

Conventionally, such color filters have been manufactured by printing or photolithography. Generally, the printing method can provide the color filters at a low price, but the pixel size is 100 μm or less and the dimensional accuracy of micron or less is obtained. Not available if required.

On the other hand, in the photolithography method, the pixel size is 10
Even if it is 0 μm or less, it is easy to realize sub-micron dimensional accuracy, but there is a drawback that the cost becomes high.

Further, the vapor deposition method described in JP-A-55-146406 is a method of forming a pattern by a lift-off method after forming a pigment vapor deposition layer on a substrate, which is thin, heat resistant and light resistant. Although it is possible to obtain a filter having excellent properties, since a plurality of treatments such as resist coating, heat treatment, resist patterning, and etching with a solvent are repeated for each color, a chip may occur on the end surface of the dye layer, It was poor in yield and reliability.

[0006]

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a color filter of high quality and low cost by a method of manufacturing a color filter of a completely dry process, which enables high yield and cost reduction.

[0007]

The present invention will be described in detail below.

The present invention basically forms a color filter by transferring a dye pattern using a light-heat conversion heat mode recording material (hereinafter, also simply referred to as a recording material).

As a specific process, as shown in FIG. 1, a color filter substrate 3 is placed on a transfer device substrate 5 having a vacuum suction hole 4, and a coloring material of a recording material 2 having a size larger in length and width than the substrate 3. The layer surfaces are overlapped and the recording material portion protruding from the periphery of the substrate 3 is decompressed through a decompression suction hole to bring the substrate 3 and the recording material into close contact with each other.
In the case of a pattern corresponding to the red filter 11 as shown in FIG. 2, laser light is focused on the surface of the color material layer of the recording material having the red color material layer to melt-transfer the color material layer to the substrate 3. Form.

The light source used in the manufacturing method of the present invention is preferably capable of emitting light having a wavelength that is easily condensed by an optical system, has a large output energy, and is easily converted into heat. Examples of such a light source include a semiconductor laser, an LED, a helium neon laser, a YAG laser, and a carbon dioxide gas laser. Among these, examples of a light source that can be easily used as an array composed of a plurality of light emitting elements include a semiconductor laser and an LED, but the light source is not limited to these as long as the object of the present invention can be achieved.

The light source used in the present invention is preferably one capable of emitting light having a wavelength capable of efficiently converting exposure energy into heat energy, and a preferable emission wavelength is
It is 600 to 2000 nm.

The photothermal conversion type heat mode recording material used in the present invention will be described in detail later, but a layer for thermal transfer (color material layer, protective layer, etc.) and a layer for absorbing light and converting it into heat (photothermal conversion layer) are provided. It may be separated, and in this case, it is preferable that the laser light is focused on the photothermal conversion layer.

The spot diameter of the focused laser light (not limited to the laser light, but the light source used in the present invention will be hereinafter represented by a laser light) depends on the size of the filter pattern. 1 to 20 μm is preferable.

In the transfer of the present invention, it is necessary that the recording material 2 and the color filter substrate 3 are in close contact with each other. For this purpose, it is needless to say that depressurization is effectively carried out. It is preferable to use an easy-to-use recording material (for example, a recording material having a cushion layer as described later).

As for the pressure reduction for sufficient adhesion, the inside of the transfer device substrate 5 is at least 100 torr or more lower than the atmospheric pressure, and the pressure reduction suction holes 4 are arranged, for example, as shown in FIG. It is preferable to dispose the filter base 3 in two places between them.

Further, it is preferable that the color filter substrate 3 is arranged so as to be fitted into the recess of the transfer device substrate 5, as shown in FIG. 1. At this time, the color filter substrate 3 is the transfer device substrate. The same height as the edge of, or 0
It is preferable to project from the edge in the range of up to 1000 μm.

Post-exposure recording material 2 in the form of a filter pattern
By peeling off, only the color material layer portion melted by heating with the laser beam is attached to the color filter substrate 3.

At this time, it is preferable that the recording material 2 is peeled off from the color filter substrate at a deep angle (30 to 180 degrees) as much as possible. To this end, for example, a roll or the like may be pressed against the back surface of the recording material at the time of peeling, and the peeling position may be used as the peeling position.

To perform the patterned exposure, either the laser light source or the transfer device substrate can be moved. There are various exposure scanning methods, and any method can be used.

When the first color filter pattern is formed in this manner, the second and third colors are similarly formed.

Next, using a recording material having a light-shielding color material layer, as shown in FIG. 2, the light-shielding color material layer 14 is transferred so as to fill the boundaries between the respective color filter portions. This transfer may be performed before transferring the filter pattern.

Finally, the transparent protective layer 8 is similarly provided on the filter pattern and the light-shielding color material layer.

An intermediate transfer medium having a transparent resin layer is mounted on the transfer device substrate 5 in place of the color filter substrate 3, and a filter pattern and a light-shielding layer are formed on the transparent resin layer by transfer by heat mode recording to make the transparent substrate. A color filter may be formed by retransferring the resin layer to the color filter substrate. It is also possible to form only the light-shielding layer on the transparent resin layer and retransfer to the substrate on which the filter pattern is formed.

Next, the recording material used in the present invention will be described.

The recording material of the present invention basically has a structure in which a color material layer, a light-shielding color material layer or a transparent protective layer is provided on a support (hereinafter also generically referred to as an ink layer) and has an image-like shape. It also has the function of converting the light that is radiated onto the heat into heat. The ink layer may have a function of converting light into heat, or may be provided as a photothermal conversion layer between the ink layer and the support. or,
A cushion layer may be provided between the support and the ink layer or between the support and the photothermal conversion layer.

Any support may be used as long as it has rigidity, good dimensional stability, and resistance to heat during image formation, and specifically, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, nylon, vinyl chloride. Plastic films of polystyrene, polystyrene, polymethylmethacrylate, polypropylene, etc. can be used. Further, since a laser beam is irradiated from the recording material side to form an image, it is desirable that the support of the recording material is transparent. The thickness of the support is preferably 6 to 200 μm, more preferably 25 to 100 μm.

The cushion layer of the present invention has an elastic modulus at 25 ° C. of 1 to 250 kg / mm ² , more preferably ^{2 to} 150 k.
It is preferably g / mm ² or Tg of −100 to 80 ° C., more preferably −80 to 40 ° C.

The penetration of the cushion layer under the standard test conditions of JIS K2530-1976 is 15 to 500, more preferably 30 to 3
00.

The material having these characteristics can be selected from the following, for example, but is not limited thereto. Specifically, natural rubber, acrylate rubber, butyl rubber, nitrile rubber, butadiene rubber, isoprene rubber, styrene-butadiene rubber, chloroprene rubber, urethane rubber, silicone rubber, acrylic rubber,
Fluorine rubber, neoprene rubber, chlorosulfonated polyethylene, epichlorohydrin, EPDM (ethylene propylene diene rubber), elastomers such as urethane elastomer, polyethylene, polypropylene, polybutadiene, polybutene, impact-resistant ABS resin, polyurethane, ABS resin, acetate, cellulose acetate,
Amide resin, polytetrafluoroethylene, nitrocellulose, polystyrene, epoxy resin, phenol-formaldehyde resin, polyester, impact-resistant acrylic resin, styrene-butadiene copolymer, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene copolymer , Vinyl chloride-vinyl acetate copolymer, polyvinyl acetate, vinyl chloride resin with plasticizer, vinylidene chloride resin,
Among polyvinyl chloride, polyvinylidene chloride and the like, resins having a small elastic modulus can be mentioned.

As the cushion layer, a shape memory resin such as polynorbornene or a styrene hybrid polymer in which a polybutadiene unit and a polystyrene unit are composited can be used.

The cushion layer satisfying the preferable conditions is not necessarily defined by the kind of the material, but the following characteristics are preferable as the characteristics of the material itself. Ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, polybutadiene resin, styrene-butadiene copolymer (SBR), styrene-ethylene
-Butadiene copolymer (SEBS), acrylonitrile-
Butadiene copolymer (NBR), polyisoprene resin (IR), styrene-isoprene copolymer (SIS),
Acrylic ester copolymer, polyester resin, polyurethane resin, butyl rubber, polynorbornene, etc.

Among these, weight average molecular weight 100,000
The following low molecular weight compounds easily satisfy the requirements for cushioning properties, but they are not necessarily limited in relation to the material.

In addition, materials other than those mentioned above can obtain preferable characteristics for the cushion layer by adding various additives.

Examples of the additives include low melting point substances such as wax and plasticizers. Specific examples of the plasticizer include phthalic acid ester, adipic acid ester, glycol ester, fatty acid ester, phosphoric acid ester, and chlorinated paraffin. In addition, for example, "Practical Handbook of Additives for Plastics and Rubber", Chemical Industry Co., Ltd.
Various additives described in, etc. can be added.

The amount of these additives to be added may be selected as required in combination with the base cushion layer material, and is not particularly limited, but generally 10% by weight or less of the total cushion layer material amount, Further, it is preferably 5% by weight or less.

As a method for forming the cushion layer, a material obtained by dissolving the above materials in a solvent or dispersing them in a latex form is applied by a blade coater, a roll coater, a bar coater, a curtain coater, a gravure coater or the like, or an extrusion lamination by hot melt. And a method of laminating a cushioning film can be applied.

The thickness of the cushion layer is preferably 5 μm or more, more preferably 10 μm or more so that it can be sufficiently adhered to the color filter substrate. Further, in order to prevent image defects by deforming so that the foreign matter is embedded when the foreign matter is sandwiched between the recording material and the color filter substrate,
Further, the thickness of the cushion layer is preferably 20 μm or more.

In photothermal conversion heat mode recording (hereinafter, also referred to as "heat mode recording"), the energy loss due to heat conduction from the ink layer to the support side is reduced by shortening the exposure time. In the heat mode recording, the thermal energy applied to the parts other than the ink layer is small as compared with the usual thermal transfer recording in which the ink layer is heated by heat conduction from the support side using a thermal head. Therefore, it is considered that the cushion layer needs to have a sufficient cushioning property due to the thermal energy generated in the ink layer during exposure. Therefore, it is considered that the intermediate layer needs to have a sufficient cushioning property due to the thermal energy generated in the ink layer during exposure. In order to reduce or soften the elastic modulus due to this slight amount of heat, the glass transition point Tg of the resin forming the cushion layer is preferably 80 ° C. or less,
More preferably, it is 40 ° C or lower. Further, in order to embed foreign matter sandwiched between the recording material and the color filter substrate,
It preferably has cushioning properties at room temperature and Tg of 20 ° C.
Hereafter, it is preferably 0 ° C. or lower.

In order for the energy of the light source for heat mode recording to be absorbed in the ink layer without waste, the transmittance for the wavelength of the light source through the support and the cushion layer is preferably 70% or more, more preferably 80% or more. For this purpose, it is necessary to use a support and a cushion layer having good transparency and reduce reflection on the back surface of the support and the interface between the support and the cushion layer.

As a method for reducing the reflection at the interface between the support and the cushion layer, the loss of light energy due to the interface reflection is greatly reduced by making the refractive index of the cushion layer smaller than that of the support by 0.1 or more. Can be reduced to

The ink layer may be a transfer layer composed of a coloring material, a photothermal conversion agent and a binder, and a transfer layer composed of a coloring material and a bander and a non-transferable photothermal conversion layer composed of the photothermal conversion material and a binder. Although it may have a layer structure, and may be a transparent protective transfer layer mainly composed of a binder,
When the photothermal conversion agent is colored, it is not preferable to be included in the color material layer for the color filter or the transparent protective layer.

First, the case where the ink layer is a transfer layer capable of converting light into heat will be described.

Examples of the coloring material include pigments such as inorganic pigments and organic pigments, and dyes.

Examples of the inorganic pigments include titanium dioxide, carbon black, zinc oxide, Prussian blue, cadmium sulfide, iron oxide and chromates of lead, zinc, barium and calcium.

The organic pigments include azo, thioindigo, anthraquinone, anthanthrone, triphendioxazine pigments, vat dye pigments, phthalocyanine pigments (eg copper phthalocyanine) and their derivatives,
Examples include quinacridone pigment. Examples of organic dyes include acid dyes, direct dyes, disperse dyes, oil-soluble dyes, metal-containing oil-soluble dyes and sublimable dyes.

As the color material layer for the color filter, one having a color tone of blue, green or red among the above is used. As the light-shielding color material layer, a pigment having a high light-shielding property such as titanium dioxide and carbon black or a metal vapor deposition layer is used. No coloring material is required for the transparent protective layer.

The content of the coloring material in the ink layer is not particularly limited, but is usually in the range of 5 to 70% by weight, preferably 10 to 60% by weight.

As the light-heat converting agent, any conventionally known one can be used. In the preferred embodiment of the present invention, in order to generate heat by irradiation with a semiconductor laser beam, when forming a color image, it exhibits an absorption maximum in the wavelength band of 700 to 3000 nm, and a near-infrared light absorbing agent which has little or no absorption in the visible region is preferable. When forming a monochrome image, carbon black or the like having absorption in the visible to near infrared region is preferable.

Examples of the near-infrared light absorber include cyanine-based, polymethine-based, azurenium-based, squalium-based, thiopyrylium-based, naphthoquinone-based, anthraquinone-based organic compounds such as dyes, phthalocyanine-based, azo-based, and thioamide-based organometallic complexes. And the like, specifically, JP-A-63-139191, 64-33547, JP-A 1-160.
No. 683, No. 1-280750, No. 1-293342, No. 2
-2074 publication, 3-26593 publication, 3-30991 publication,
No. 3-34891, No. 3-36093, No. 3-36094, No. 3-36095, No. 3-42281, No. 3-97589, No. 3-103476, etc. Compounds of

These can be used alone or in combination of two or more.

Examples of the binder for the ink layer include a heat-melting substance, a heat-softening substance, and a thermoplastic resin. The heat-meltable substance is usually a solid or semi-solid substance having a melting point in the range of 40 to 150 ° C. measured using Yanagimoto MJP-2 type. Specifically, plant waxes such as carnauba wax, wood wax, auricurie wax and espal wax; animal waxes such as beeswax, insect wax, shellac wax, whale wax; paraffin wax, microcrystal wax, polyethylene wax, ester wax, acid. Petroleum waxes such as waxes; and waxes such as montan wax, ozokerite, ceresin, and other mineral waxes. In addition to these waxes, palmitic acid, stearic acid, margaric acid, behenic acid, etc. Higher fatty acids; higher alcohols such as palmityl alcohol, stearyl alcohol, behenyl alcohol, marganyl alcohol, myricyl alcohol, eicosanol; higher fatty acid esters such as cetyl palmitate, mycilyl palmitate, cetyl stearate, myricyl stearate; acetamide, Propionic acid amide, palmitic acid amide, stearic acid amides such as amide wax; and stearylamine, behenylamine, like higher amines such as palmityl amine.

As the thermoplastic resin, ethylene-based copolymer, polyamide-based resin, polyester-based resin, polyurethane-based resin, polyolefin-based resin, acrylic resin, styrene-acrylic copolymer, styrene resin, styrene-maleic acid are used. Copolymer, vinyl chloride resin, cellulose resin, rosin resin, polyvinyl alcohol resin, polyvinyl acetal resin, ionomer resin,
Resins such as petroleum-based resins; elastomers such as natural rubber, styrene-butadiene rubber, isoprene rubber, chloroprene rubber, and diene-based copolymers; rosin derivatives such as ester gum, rosin maleic acid resin, rosin phenol resin, and hydrogenated rosin; Phenolic resin, terpene resin,
Examples thereof include polymer compounds such as cyclopentadiene resin and aromatic hydrocarbon resins.

The thermal transfer layer having a desired thermal softening point or thermal melting point can be formed by appropriately selecting the above-mentioned heat-melting substance and thermoplastic substance.

Any or all of the color material layer, the light shielding layer and the transparent protective layer preferably contain a curable resin or a monomer in addition to these binders. As the curable resin, a thermosetting resin, a photocurable resin, an electron beam curable resin or the like can be used, but a photocurable resin is particularly preferable. As the photocurable resin and the monomer, general acrylic and epoxy photocurable resins and monomers can be used.
Further, it is preferable to add a photopolymerization initiator to carry out these polymerizations. The photocurable resin or monomer contained in the transparent protective layer is preferably 0 to 70%, and the photopolymerization initiator is preferably 0 to 10% by weight based on the total weight of the layer. It is particularly preferable that the transparent protective layer contains a photocurable resin or a monomer. When the photo-curable resin or monomer is added to the ink layer, it is preferable to cure the ink layer by transferring the ink layer to a substrate or an intermediate transfer medium and then performing exposure. The wavelength of light for exposure depends on the type of photopolymerization initiator, but ultraviolet light or short-wave visible light is preferable. The exposure intensity also depends on the photocurable material to be added, but generally 10 to 5000 mJ / cm ² is preferable. The exposure for curing may be performed after each transfer process is completed, or may be performed between a plurality of transfer processes or after all transfer processes are completed.

Next, the case where the ink layer has a two-layer structure of a transferable color material layer and a photothermal conversion layer will be described.

By having a two-layer structure of a color material layer and a light-heat conversion layer, a light-heat conversion agent having absorption in the visible region can be used, and particularly in the case of a color material layer for color filters and a transparent protective layer. It is advantageous in color reproduction.

As the photothermal conversion agent in the photothermal conversion layer,
It is possible to use those listed for the ink layer capable of converting light into heat. The photothermal conversion layer has an absorption in the near infrared region of 700 to 1000 nm for the wavelength of the light source of at least 0.25 or more, preferably 0.5 or more. With infrared absorbing dyes,
Since it has a larger absorption coefficient per unit weight than pigments such as carbon black, the thickness of the photothermal conversion layer can be reduced, and high sensitivity can be achieved, which is preferable.

As the binder in the photothermal conversion layer,
A resin having a high glass transition point and high thermal conductivity, such as gelatin, polyvinylpyrrolidone, polyester, polyparabanic acid, polymethylmethacrylate, polycarbonate, polystyrene, ethylcellulose, nitrocellulose, methylcellulose, hydroxypropylcellulose, polyvinyl alcohol, polyvinyl chloride, Resins such as polyamide, polyimide, polyetherimide, polysulfone, polyethersulfone, and aramid can be used.

The film thickness of this photothermal conversion layer is preferably 0.1 to 3 μm, and the content of the photothermal conversion material in the photothermal conversion layer is usually determined so that the absorbance at the wavelength of the light source used for image recording is 0.25 or more. You can

The light-heat conversion layer may be formed as a vapor deposition film in addition to the above. Carbon black, gold, silver, aluminum, chromium, nickel, antimony and tellurium described in JP-A-52-20842 can be used. Examples include vapor-deposited layers of metal black such as bismuth and selenium.
The light-heat conversion material may be the color material itself of the ink layer,
Further, various substances can be used without being limited to the above.

The color filter substrate is not particularly limited as long as the ink layer can be transferred and the color filter can have a desired function. For example, the following can be specifically used. . That is, an optical resin plate, a glass plate, gelatin, polyvinyl alcohol,
Hydroxyethyl cellulose, methyl methacrylate,
Resin film or resin plate of polyester, butyral, polyamide, etc.

The color filter substrate may have an image receiving layer to facilitate transfer of the ink layer.

The image-receiving layer is composed of a binder and various additives and mat materials which are added as needed. Further, in some cases, it is formed only by the binder.

As the image-receiving layer binder having good transferability,
Polyvinyl acetate emulsion adhesives, chloroprene adhesives, epoxy resin adhesives and other adhesives, natural rubber,
Adhesive materials such as chloroprene rubber-based, butyl rubber-based, polyacrylic acid ester-based, nitrile rubber-based, polysulfide-based, silicon rubber-based, rosin-based, petroleum-based resins, recycled rubber, vinyl chloride-based resin, SBR, polybutadiene resin, polyisoprene , Polyvinyl butyral resin, polyvinyl ether, ionomer resin, styrene resin, styrene-acrylic resin, acrylic resin and the like.

The thickness of the image receiving layer is usually 0.5 to 10 μm.

As the exposure method, a method of exposing from the support side of the recording material and a method of exposing from the color filter substrate side while the recording material and the color filter substrate are in close contact can be considered.

When the cushion layer is provided, the recording material becomes deformable.

A deformable material may deteriorate the slipperiness due to deformation, and thus the slipperiness of the image receiving layer and the ink layer may be deteriorated. As a result, close contact may be difficult, and automatic conveyance in the recording apparatus may be difficult. In such a case, it is possible to deal with it by providing an image receiving layer having good slipperiness.

In order to obtain an image-receiving layer having good slipperiness, addition of a mat material and a material having good slipperiness can be mentioned.

The addition of fine particles (matting material) to the image receiving layer is effective in improving the slipperiness of the recording material and the color filter substrate. However, if the addition amount of the matting material is excessively increased, a gap is generated between the recording material and the color filter substrate and the transferability is deteriorated. The amount of the matting material added depends on the particle size and the film thickness of the image receiving layer.
When forming the image receiving layer of
5 to 150 mg / m ² , 5 to 30 mg / for matting materials of 2.0 to 3.5 μm
m ^2, preferably 10 mg / m ² or less at 5μm mat member. Examples of the material having good slipperiness include polyethylene resin, polypropylene resin, silicone resin and Teflon resin.

[0071]

The present invention will be described in detail below with reference to examples, but the embodiments of the present invention are not limited thereto.

Example 1 (Preparation of recording material) A transparent PET (polyethylene terephthalate: T-100 manufactured by Diamond Foil Hoechst) having an elastic modulus of 450 kg / mm ² and a thickness of 75 μm was used as a support, and the following cushion layer was formed in a thickness of 30 μm. Then, a light-heat conversion layer and an ink layer were sequentially coated on the upper layer to prepare a heat mode recording material.

Cushion Layer Material Penetration Ethylene-Acrylic Acid Resin 40 (EV-40Y: manufactured by Mitsui DuPont Polychemical Co., Ltd.) A coating solution having the following composition was applied onto the cushion layer with a wire bar and dried. .

Coating liquid for light-heat conversion layer Polyvinyl alcohol (GL-05, manufactured by Nippon Synthetic Chemical Industry ) 7 parts IR absorbing dye (IR-1) 3 parts Distilled water 90 parts

[0075]

[Chemical 1]

A coating liquid having the following composition was applied onto the photothermal conversion layer with a wire bar and dried. Dry film thickness 0.5
μm.

Coating liquid for color material layer for color filter Styrene acrylic resin (manufactured by Sanyo Chemical Industries: Hymer SBM-100) 7.4 parts Ethylene-vinyl acetate copolymer 0.5 parts (manufactured by Mitsui DuPont Polychemical Co .: EV-40Y) ) Green pigment dispersion 2.5 parts Silicon resin fine particles 0.3 parts (0.8 μm, Toshiba Silicone Co., Ltd .: Tospearl 108) DOP (dioctyl phthalate) 0.3 parts MEK (methyl ethyl ketone) 90 parts A coating solution of the following composition on the color filter substrate. The coating was applied to form an image receiving layer having a dry film thickness of 1.0 μm.

Coating liquid for image-receiving layer Ethylene-vinyl acetate copolymer 10 parts (Toyo Morton: AD37P295J) Water 90 parts Next, a semiconductor laser having a wavelength of 830 nm was spotted with a power of 30 mW and 1 / e ^{2 on} the exposed surface. Using an optical system with a diameter of 10 μm, a light spot was scanned at a linear velocity of 95 cm / sec with respect to the recording material and the color filter substrate, which were pressure-adhered to the decompressor shown in FIG. Transferred.

Thereafter, the blue filter pattern, the red filter pattern, the light-shielding color material layer and the transparent protective layer were transferred in the same manner. However, the light-shielding color material layer was prepared in the same manner except that the carbon black dispersion was used instead of the green pigment dispersion of the color material layer coating liquid for the color filter. Dry film thickness 1.1 μm.

The composition of the transparent protective layer coating liquid is as follows. Dry film thickness 0.8 μm.

Coating liquid for transparent protective layer Acrylic resin 6.0 parts (Mitsubishi Rayon Co., Ltd .: BR-80) Styrene acrylic resin 4.0 parts (Sanyo Chemical Co., Ltd .: Hymer SBM-100) MEK 90 parts Color filter thus obtained Shows that the pixel size of each color filter pattern is 80 μm × 80 μm, the size error is 3% or less, and the aperture ratio is 48%.

Example 2 A color filter was produced in the same manner as in Example 1 except that the following photocurable resin was added to each of the color material layer, the light shielding color material layer and the transparent protective layer.

2.5 parts of isocyanuric acid ethylene oxide-modified diacrylate (Aronix M-215 manufactured by Toagosei Co., Ltd.) 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one 0.3 parts The above recording materials 300 mJ / cm ² for each layer transfer of color material layer for color filter, light shielding material, and transparent protective layer
Curing was carried out by irradiating with ultraviolet light of the intensity.

The color filter thus produced showed good heat resistance to 250 ° C. in addition to that of Example 1.

[Brief description of drawings]

FIG. 1 is a time-series explanatory view of a color filter manufacturing method of the present invention.

FIG. 2 is an example of the color filter of the present invention.

[Explanation of symbols]

1 High-intensity exposure 2 Photothermal conversion heat mode recording material (2-1 is a support, 2-2 is a color material layer) 3 Color filter substrate 4 Decompression suction hole 5 Transfer device substrate 6 Pixel 7 by color material layer transfer 7 Light-shielding property Color material layer 8 Transparent protective layer 9 Heating or pressure 11 Red filter 12 Green filter 13 Blue filter 14 Light-shielding color material layer 15 Color filter substrate

Claims (9)

[Claims] 1. A color filter, wherein a filter pattern is formed on a substrate by a color material layer melt-transferred using a melt-type thermal transfer recording material. 2. The color filter according to claim 1, wherein the melt type thermal transfer recording material is a photothermal conversion type heat mode recording material. 3. A filter pattern is formed on a substrate by superimposing the color material layer side of a photothermal conversion heat mode recording material on a color filter substrate and exposing the recording material side to transfer the color material layer. Characteristic color filter manufacturing method. 4. The method of manufacturing a color filter according to claim 3, wherein the light-shielding layer between the filter patterns is also formed by transferring the light-shielding color material layer of the photothermal conversion heat mode recording material. 5. The method for producing a color filter according to claim 3, wherein the transparent protective layer is formed by transferring a transparent resin layer of a photothermal conversion type heat mode recording material onto the filter pattern and the light shielding layer. . 6. A transfer layer forming at least one layer selected from a color material layer, a light-shielding layer and a transparent protective layer contains a curable resin, and has a post-transfer curing step of the layer. 5 to 5, a method for manufacturing a color filter. 7. The light-heat conversion heat mode recording material has a light-heat conversion layer on the exposure side as a layer different from the color material layer, the light-shielding color material layer and the transparent resin layer. Manufacturing method of color filter. 8. The production of a color filter according to claim 3, wherein the photothermal conversion heat mode recording material has a cushion layer on the support side of the color material layer, the light-shielding color material layer or the transparent resin layer. Method. 9. The method for manufacturing a color filter according to claim 3, wherein the color filter substrate has an image receiving layer.