JP2002303716A - Optical parts, method for manufacturing the same and optical element which uses the optical parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce optical parts such as a color filter or the like having similar characteristics to those of color filters produced by a conventional method by an ink jet method with high yield. SOLUTION: A black matrix 2 is formed on a transparent substrate 1, hardening ink 4 containing a coloring agent and a resin component which is hardened by irradiation with light or heat treatment is deposited on the openings of the black matrix by an ink jet method, and the ink is hardened to form a color part 5. In the above processes, porous silica particles are preliminarily deposited on the openings so as to increase the surface tension of the hardening ink 4 and to prevent color mixing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an optical component such as a color filter suitably used for a color liquid crystal display used in a color television, a personal computer, a pachinko game machine, etc. by an ink jet method. The present invention relates to an optical component manufactured by a manufacturing method, and an optical element such as a liquid crystal element configured using the optical component.

[0002]

2. Description of the Related Art In recent years, the development of personal computers,
In particular, with the development of portable personal computers, the demand for liquid crystal displays, especially for liquid crystal displays for color display, tends to increase. However, for further widespread use, it is necessary to reduce the cost of the liquid crystal display. In particular, there is an increasing demand for reducing the cost of a color filter having a high cost. Conventionally, various methods have been tried to satisfy the above requirements while satisfying the required characteristics of the color filter, but no method has yet been established that satisfies all the required characteristics. The respective methods will be described below.

[0003] The first method most frequently used is a dyeing method. In the dyeing method, a water-soluble polymer material, which is a material for dyeing, is applied on a glass substrate, and is patterned into a desired shape by a photolithography process. Get a pattern. By repeating this three times, R (red), G
(Green) and B (blue) colored portions are formed.

[0004] The second method is a pigment dispersion method, which is recently replacing the dyeing method. In this method, a photosensitive resin layer in which a pigment is dispersed is formed on a substrate, and a monochromatic pattern is obtained by patterning the photosensitive resin layer. This process is repeated three times to form colored portions of three colors of R, G, and B.

As a third method, there is an electrodeposition method. In this method, a transparent electrode is patterned on a substrate, and immersed in an electrodeposition coating solution containing a pigment, a resin, an electrolytic solution, and the like to electrodeposit a colored portion of a first color. This process is repeated three times,
The three colored portions of G and B are formed and finally baked.

As a fourth method, a pigment is dispersed in a thermosetting resin, and printing is repeated three times to obtain R,
After the three colors G and B are separately applied, the resin is thermally cured. In any method, a protective film is generally formed on the colored portion.

[0007] These methods have in common that R,
In order to color the three colors G and B, the same process needs to be repeated three times, which increases the cost. There is also a problem that the yield decreases as the number of steps increases. Further, in the electrodeposition method, since the pattern shape that can be formed is limited, it is difficult to apply the current technology to a TFT type liquid crystal element (TFT, ie, an active matrix driving type liquid crystal element using a thin film transistor for switching). It is. Further, the printing method is not suitable for forming a fine pitch pattern due to poor resolution and smoothness.

In order to make up for these drawbacks, Japanese Patent Laid-Open Publication No.
JP-A-5205, JP-A-63-235901, JP-A-1-217320 and the like disclose a method of manufacturing a color filter using an ink jet system, but a method that is still sufficiently satisfactory has been obtained. Absent.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide an optical component such as a color filter which satisfies the required characteristics of a conventional color filter such as heat resistance, solvent resistance and resolution by a simpler method. In providing a manufacturing method, in particular, color mixing and color unevenness by the inkjet method,
It is an object of the present invention to provide a method for manufacturing optical components such as color filters without color loss with a reduced process and a high yield. Further, the manufacturing method provides an optical component such as a color filter with high definition and high reliability, and provides a highly reliable optical element using the optical component, in particular, a liquid crystal element using the color filter at a lower cost. It is in.

[0010]

A first aspect of the present invention is a method for manufacturing an optical component having at least a plurality of colored portions on a substrate and partitions separating adjacent colored portions. A step of forming a partition having an opening, a step of attaching a different material made of a material different from the coloring portion forming material to the opening of the partition, and a curable ink in the opening of the partition to which the different member is attached And curing to form a colored portion.

In the method of manufacturing an optical component according to the present invention, the following configuration is included as a preferred embodiment.
The area occupied by the two-dimensional projection of the dissimilar member on the substrate plane is 50% or less of the area of the substrate surface exposed to the opening of the partition wall. The different member is spherical. The different member is porous. The different member is colorless and transparent. The curable ink contains at least a coloring agent and a colored resin composition that is cured by light irradiation, heating, or both. The means for applying the curable ink into the opening of the partition is an ink jet method.

A second aspect of the present invention is that a heterogeneous member having at least a plurality of colored portions and a partition separating the adjacent colored portions on the substrate, wherein the colored portions are made of a material different from the material for forming the colored portions. An optical component including the optical component and manufactured by the method for manufacturing an optical component of the present invention.

In the above-mentioned optical component of the present invention, it is preferable that the partition is a light-shielding layer, a protective film is provided on the colored portion, and the filter is a color filter.

A third aspect of the present invention is an optical element comprising the above-mentioned optical component of the present invention.

A fourth aspect of the present invention is characterized in that a liquid crystal is sandwiched between a pair of substrates, and one of the substrates is a liquid crystal element formed by using a color filter which is an optical component of the present invention. Optical element.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the operation of the present invention will be described.

According to the present invention, a colored partition is formed by forming a partition separating adjacent colored portions on a substrate, and applying a curable ink to a concave portion formed by the partition and the substrate exposed at the opening of the partition. Is characterized in that a material for forming a colored portion, that is, a dissimilar member made of a material different from the curable ink is attached in advance to the concave portion.

Generally, the action of adhering a liquid to a solid is explained by the interfacial tension between the liquid and the solid. This interfacial tension varies depending on the material and surface state of the liquid and the solid, and is proportional to the increase in the contact area between the liquid and the solid.

The present invention utilizes this fact,
Furthermore, in optical components such as color filters, a typical defect such as ink overflow is the position of the outer periphery of the contact surface between the ink and the substrate. This is based on the fact that it depends on the amount of increase. In other words, attention is paid to the fact that the position of the outer periphery of the contact surface and the amount of increase in the contact area are easily confused but different.

To explain with a simple example, in a state where the ink overflows when the contact surface between the ink and the substrate and the member attached to the substrate spreads outward by 1 μm or more, in the state of the related art, the overflow of the ink is Even in the case where the contact area differs only by 1 μm ² in the limit of 1 μm spread that does not occur, in the present invention, an increase in the contact area larger than 1 μm ² is obtained by complicating the shape of the contact surface with different members. It becomes possible.

With the above configuration and operation, in the present invention, the force for adhering the ink to the substrate is increased by the interfacial tension, so that a larger amount of ink can be held. The increase in the force that causes the ink to adhere to the substrate increases the production and use conditions of an ideal color filter.
It is possible to assume a case in which the effect is not so apparent as to be a margin, but in actuality, in the manufacturing process, it is inevitable that an impact force is applied from the outside due to the transfer of the substrate and the like. In the past, ink might overflow due to the impact force,
In the present invention, no ink overflow occurs. As described above, the present invention has a remarkable effect that it is possible to hold a larger amount of ink as compared with the related art, especially in a practical state.

The optical component manufactured in the present invention includes a color filter. Hereinafter, the present invention will be described using a case where a color filter is manufactured as an embodiment.

FIG. 1 schematically shows the steps of a preferred embodiment of a method for manufacturing a color filter which is an embodiment of the optical component of the present invention. This embodiment shows a process of manufacturing a transmission type color filter using a transparent substrate as a substrate. In the drawing, 1 is a transparent substrate, 2 is a black matrix, 3 is a heterogeneous member, 4 is a curable ink, 5 is a colored portion, 6
Is a protective film. 1A to 1D are cross-sectional views corresponding to the following steps (a) to (d), respectively.

Step (a) A partition is formed on the transparent substrate 1. As the transparent substrate 1, glass is generally used, but plastics and the like can also be used as long as they have necessary characteristics such as strength.

The partition is a member that acts to contain the ink 4 described later, and is usually formed of a resin to form a predetermined thickness, and is preferably patterned by photolithography using a photosensitive resin. Particularly preferably, the partition walls are formed of a black resin composition, and the black matrix 2 also serves as a light-shielding layer that shields between adjacent colored portions 5 as in the present embodiment. The thickness of the black matrix 2 according to the present invention is 0.5
μm or more is preferred.

As a black resin composition for forming such a black matrix 2, carbon black, a black organic pigment or the like can be used as a black pigment. In the case of photosensitive, UV resist, DEEP-UV
A resist, an ultraviolet curable resin, or the like can be appropriately selected and used.

Examples of the UV resist include negative resists such as cyclized polyisoprene-aromatic bisazide resist and phenol resin-aromatic azide compound resist, and positive resists such as novolak resin-diazonaphthoquinone resist. be able to.

As the DEEP-UV resist, positive resists such as polymethyl methacrylate, polystyrene sulfone, polyhexafluorobutyl methacrylate, polymethyl isopropenyl ketone and brominated poly 1
A radiation-decomposable polymer resist such as trimethylsilylpropene; a dissolution inhibitor-based positive resist such as o-nitrobenzyl cholic acid; a negative resist such as polyvinylphenol-3,3-diazidodiphenyl sulfone and polymethacrylic acid Glycidyl and the like can be mentioned.

As the UV-curable resin, one or more photopolymers selected from benzophenone and its substituted derivatives, benzoin and its substituted derivatives, acetophenone and its substituted derivatives, oxime compounds such as benzyl, etc. Examples thereof include polyester acrylate, epoxy acrylate, and urethane acrylate containing about 2 to 10% by weight of an initiator.

In the case of non-photosensitivity, polyimide, polyacrylic acid, polyurethane acrylate and the like can be used.

The above-mentioned resin material or its precursor is formed into a composition by using an appropriate solvent, and is applied on a transparent substrate 1 by a method such as a spin coater, a die coater, and a dip coat to form a coating film. If there is, the coating film made of the above-mentioned material is etched or lifted off using a photoresist as a mask if it is non-photosensitive, and then patterned to form the black matrix 2.

In the present invention, the black matrix 2 is formed by transferring the photosensitive black resin composition layer once formed on the plastic substrate film onto the transparent substrate 1 and then performing pattern exposure and development. You can also. As the plastic substrate film used in such a process, various plastic films having a chemically and thermally stable flexibility are used, for example, high-density polyethylene, low-density polyethylene, polyamide, polystyrene,
Polyether sulfone, polyethylene terephthalate,
Examples include polyimide. The thickness of the plastic substrate film is preferably 1 to 10 μm, and more preferably 3 to 8 μm.

Further, as a material for forming the photosensitive black resin composition layer formed on the plastic substrate film,
A black colorant obtained by mixing and dispersing carbon black, which is a black colorant, or several kinds of color pigments in a photoresist is preferably used. As a solvent for dispersing these, for example, polyethylene glycol monomethyl ether acetate is preferable. Also,
As the photoresist used at this time, a novolak resin, polymethyl methacrylate, or the like is used for a positive photoresist, and a partially cyclized polyisoprene, polyvinyl phenol, or the like is used for a negative photoresist. When a novolak resin or polymethyl methacrylate is used, for example, diazonaphthoquinone sulfonic acid ester as a photosensitive material is preferably mixed as a dissolution inhibitor in these alkali-soluble resins.
That is, with this configuration, the diazonaphthoquinone sulfonic acid ester undergoes a transition by light irradiation, the dissolution inhibiting effect is eliminated, alkali solubility is increased, and the compound functions as a positive resist.
Deterioration of the material is suppressed, and stable processing becomes possible.

A release agent (for example, a silicone type) is applied on the plastic substrate film so that the dry thickness is 0.05 to 0.1 μm, and the black photosensitive resin composition is further dried thereon. Is preferably 1 to 10 μm,
More preferably, it is applied so as to have a thickness of 2 to 7 μm. Examples of the coating method include spin coating, roll coating, bar coating, and dip coating. Thereafter, the resultant is thermally cured and dried at a temperature of about 80 to 100 ° C., and then wound up and stored.

It is preferable that the partition walls according to the present invention have ink repellency to the curable ink 4 applied in the post-step (c).

Step (b) The dissimilar member 3 is attached to the opening (recess) of the black matrix 2. The heterogeneous member 3 used in the present invention is a member formed of a material different from the material forming the colored portion 5 formed in the opening (that is, the curable ink 4), and in particular, of the present embodiment. As described above, in an optical component in which it is important to transmit more light, the optical component is formed of a colorless and transparent material and included in the curable ink 4 so as not to impair the optical characteristics such as the transparency and the display color of the colored portion 5. It is preferably formed of a material that can be colored by a coloring agent. In addition, from the viewpoint of not impairing the optical characteristics of the colored portion 5, desirably, the area occupied by the two-dimensional projection of the heterogeneous member 3 on the plane of the transparent substrate 1 is 50% of the area of the substrate surface exposed to the opening of the partition wall. % And the spray density are set so as to be not more than%.

In consideration of the trade-off between the function of reducing the volume of the opening (recess) of the black matrix 2 due to the volume itself of the heterogeneous member 3 and the effect of increasing the amount of ink held by the heterogeneous member 3, one opening is considered. The sum of the volumes of the dissimilar members 3 is 1 to 5 of the volume of the colored portion 5 to be finally formed.
It is desirable to set it to 0%.

The heterogeneous member 3 preferably used in the present invention is porous, and its shape is preferably spherical, and its particle size is preferably from 0.3 to 2.0 μm. Further, if the same material is used, the more complicated the surface shape is, the higher the interfacial tension is. Therefore, a material having a complicated surface shape such as porous is desirable. Specific examples include porous silica beads and glass beads.

Step (c) The curable ink 4 of a predetermined color is applied along a predetermined coloring pattern using the opening of the black matrix 2 as a portion to be colored. As a means for applying, a general printing method such as offset printing, gravure printing, screen printing and the like can be used, but in the present invention, an ink jet system is particularly preferable. The ink jet system used in the present invention includes a bubble jet (registered trademark) type using an electrothermal converter as an energy generating element,
Alternatively, a piezo jet type using a piezoelectric element or the like can be used.

Curable ink 4 used in the present invention
Preferably contains at least a colorant and a resin composition that is cured by light irradiation, heating, or both, and has a surface energy of usually 3 to 7 × 10 ⁻³ N / m.

As the colorant, any of a dye and a pigment can be preferably used. For example, as a dye,
C. I. Acid red 118, C.I. I. Acid Red 254, C.I. I. Acid Green 25, C.I. I. Acid blue 113, C.I. I. Acid Blue 185,
C. I. Acid Blue 7, pigments such as C.I. I. Pigment Red 177, C.I. I. Pigment Red 5,
C. I. Pigment Red 12, C.I. I. Pigment Green 36, C.I. I. Pigment Blue 209, C.I.
I. Pigment Blue 16 and the like, but are not limited thereto. The content of these dyes and pigments in the ink 4 is preferably about 0.1 to 20% by weight.

As the thermosetting resin composition to be contained in the curable ink 4, a combination of a known resin and a crosslinking agent can be used. Specifically, a melamine resin, a hydroxyl group or carboxyl group-containing polymer, Melamine, hydroxyl or carboxyl group-containing polymer and polyfunctional epoxy compound, hydroxyl or carboxyl group-containing polymer and cellulose reaction type compound, epoxy resin and resole type resin, epoxy resin and amines, epoxy resin and carboxylic acid or acid anhydride, Epoxy compounds and the like can be mentioned. As the photocurable resin composition, a commercially available negative resist is preferably used.

Particularly preferably, a thermosetting resin composition containing a polyfunctional epoxide having two or more glycidyl groups and a compound crosslinked by the epoxide is preferably used. This polyfunctional epoxide shows a cross-linking reaction with a reactive group having active hydrogen, such as a hydroxyl group, a carboxyl group, or an amino group. It also reacts with acid anhydrides and the like. Specifically, for example, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, glycerol polyglycidyl ether, polyglycerol polyglycidyl ether, triglyceride Methylol propane polyglycidyl ether, diglycerol polyglycidyl ether, sorbitol polyglycidyl ether, sorbitan polyglycidyl ether, pentaerythritol polyglycidyl ether, triglycidyl tris (2-hydroxyethyl) isocyanurate, adipic acid diglycidyl ether, and the like. it can. These polyfunctional epoxides are preferably contained in the curable ink 4 in an amount of 0.01 to 10% by weight. These polyfunctional epoxides are used alone or in combination of two or more.

The compound crosslinked by the polyfunctional epoxide is a resin containing a reactive group having an active hydrogen such as a hydroxyl group, a carboxyl group or an amino group, and being cured by heat treatment. Specifically, acrylic resins such as polyvinyl alcohol, polyacrylic acid, polymethacrylic acid, polyacrylate, polymethacrylate, and polyhydroxyethyl methacrylate; silicone resins; epoxy resins; hydroxypropyl cellulose, hydroxyethyl cellulose, methyl cellulose ,
Cellulose derivatives such as carboxymethylcellulose or modified products thereof; polyvinylpyrrolidone, etc .; these polymer compounds are used alone or in combination of two or more, and the content in the curable ink 4 is 0.05 to 20% by weight is preferred.

When the curable ink 4 is used in the ink jet system, it is preferable to use an aqueous medium. As the aqueous medium, a mixed solvent of water and a water-soluble organic solvent is preferable. It is preferable to use exchanged water (deionized water). Examples of the water-soluble solvent include, for example, methyl alcohol, ethyl alcohol, n
-Propyl alcohol, isopropyl alcohol, n-
Butyl alcohol, sec-butyl alcohol, ter
alkyl alcohols having 1 to 4 carbon atoms such as t-butyl alcohol; amides such as dimethylformamide and dimethylacetamide; ketone or keto alcohols such as acetone and diacetone alcohol; tetrahydrofuran;
Ethers such as dioxane; polyethylene glycol;
Polyalkylene glycols such as polypropylene glycol; ethylene glycol, propylene glycol, butylene glycol, triethylene glycol, 1,2,2
Alkylene glycols whose alkylene group contains 2 to 6 carbon atoms, such as 6-hexanetriol, thiodiglycol, hexylene glycol, diethylene glycol;
Glycerin; lower alkyl ethers of polyhydric alcohols such as ethylene glycol monomethyl (or ethyl) ether, diethylene glycol methyl (or ethyl) ether, and triethylene glycol monomethyl (or ethyl) ether; N-methyl-2-pyrrolidone, 2-pyrrolidone , 1,3-dimethyl-2-imidazolidinone and the like. Among them, polyhydric alcohols such as diethylene glycol and lower alkyl ethers of polyhydric alcohols such as triethylene glycol monomethyl (or ethyl) ether are preferable.

Further, when the ink jet system is used, it is effective to add a lower alkyl ether of ethanol, isopropyl alcohol, or polyhydric alcohol in order to obtain ejection stability of the ink from the ink jet head. is there. By adding these solvents to the curable ink 4, foaming of the ink on the thin film resistor in the ink jet head can be performed more stably, particularly in the case of the bubble jet (registered trademark) type.

In addition to the above components, a surfactant, an antifoaming agent, a preservative, and the like can be added as needed to obtain an ink having desired physical properties. For example, any surfactant can be used as long as it does not adversely affect the storage stability of the curable ink 4. Specifically, anionic surfactants such as fatty acid salts, higher alcohol sulfate salts, liquid fatty oil sulfate salts, alkyl allyl sulfonate salts, polyoxyethylene alkyl ethers, polyoxyethylene alkyl esters, and polyoxyethylene alkyl esters Examples include nonionic surfactants such as ethylene sorbitan alkyl esters, acetylene alcohol, and acetylene glycol, and these can be used alone or in combination of two or more.

When the pH of the curable ink 4 needs to be adjusted to maintain its stability, for example, ammonia,
Or various organic amines such as diethanolamine and triethanolamine, sodium hydroxide, lithium hydroxide,
An inorganic alkali agent such as an alkali metal hydroxide such as potassium hydroxide, an organic acid or an inorganic acid can be used.

Step (d) The curable ink 4 is cured by performing necessary processing such as heat treatment or light irradiation, and a colored portion 5 is formed. Further, if necessary, a protective film 6 is formed on the colored portion 5 to obtain the color filter of the present invention. As the protective film 6, a resin composition layer of a photo-curing type, a thermo-setting type, or a combination of heat and light, or an inorganic film formed by vapor deposition, sputtering, or the like can be used. In any case, any material can be used as long as it has transparency as a color filter and can withstand the subsequent ITO film forming step, alignment film forming step, and the like.

Next, FIG. 2 is a schematic cross-sectional view of an example of a liquid crystal element which is an embodiment of the optical element of the present invention. In this example,
Using the color filter obtained by the process of FIG.
This is an example in which an FT type color liquid crystal element is configured. In the figure, 7 is a common electrode, 8 and 13 are alignment films, 9 is a liquid crystal, 11 is a counter substrate, and 12 is a pixel electrode, and the same members as those in FIG.

The color liquid crystal element is generally formed by aligning the substrate 1 on the color filter side with the counter substrate 11 and sealing the liquid crystal 9. TFTs (not shown) and pixel electrodes 12 are formed in a matrix inside one substrate 11 of the liquid crystal element. Further, inside the substrate 1 on the color filter side, at a position facing the pixel electrode 12,
The colored portion 5 of the color filter is formed so that R, G, and B are arranged, and a transparent common electrode 7 is formed thereon. The black matrix 2 is usually formed on the color filter side, but may be formed on the counter substrate 11 side in a BM-on-array type liquid crystal element or the like. Further, alignment films 8 and 13 are formed in the plane of both substrates, and the liquid crystal molecules are arranged in a certain direction. These substrates are opposed to each other via a spacer (not shown), are adhered to each other with a sealing material (not shown), and the gap is filled with a liquid crystal 9.

In the case of the transmission type liquid crystal element, the substrate 11 and the pixel electrode 12 are formed of a transparent material, a polarizing plate is bonded to the outside of each substrate, and a fluorescent lamp and a scattering plate are generally combined. The display is performed by using the backlight and using the liquid crystal compound as an optical shutter for changing the transmittance of the backlight. In the case of the reflection type, the substrate 11 or the pixel electrode 12 is formed of a material having a reflection function, or a reflection layer is provided on the substrate 11 and a polarizing plate is provided on the outside of the other substrate to provide a color. Display is performed by reflecting light incident from the filter side.

In the embodiment shown in FIG. 1, a process for manufacturing a color filter using a transparent substrate is described. However, instead of the transparent substrate 1, an I-type substrate is formed on a substrate made of a material having high light reflectivity.
By using a substrate on which a TO electrode is formed or a substrate on which an electrode made of a metal having high light reflectivity is formed, a reflection-type color filter that transmits light only in a colored portion can be formed.
By using the color filter as a substrate on the reflection side, a reflection type liquid crystal element can be formed.

Further, as a liquid crystal device according to the present invention, by using a liquid crystal composition in which a dichroic dye and a cholesteric liquid crystal are added in an appropriate amount to a nematic liquid crystal having a positive dielectric anisotropy, a display can be performed by removing an electric field. A phase-change guest-host mode liquid crystal element to be performed may also be used. The phase-change guest-host display mode, in which display is performed using a color change based on a cholesteric-nematic phase transition, provides high contrast without a polarizing plate, has no viewing angle dependence, has a bright display as a whole, and has a high response. It has features such as high speed, and is particularly promising as a reflection type liquid crystal display. In this mode, when no voltage is applied, the liquid crystal molecules exhibit a Grange-Yan structure that sequentially turns in the orientation direction as the liquid crystal molecules proceed in the direction perpendicular to the electrode surface, so that the dye molecules strongly absorb light deviated in an arbitrary direction and strongly develop color. . On the other hand, when an electric field is applied, both the dye molecules and the liquid crystal molecules exhibit homeotropic alignment perpendicular to the electrode surface, almost completely transmit incident light, and exhibit the color of the reflector.

In the above-mentioned liquid crystal element, it is needless to say that the conventional technique can be used as it is for the other members as long as it is constituted by using the color filter of the present invention.

As an example of the size of a color filter which is one embodiment of the optical component of the present invention, the size of each of the R, G and B colored portions (colored pixels) is 230 μm × 80 μm.
(X direction × Y direction), pitch in the X direction (arrangement direction of colored portions of the same color) is 300 μm, pitch in the Y direction (R, G, B arrangement direction) is 100 μm, 480 in the X direction, and 1920 in the Y direction ( 640 pixels for each color), and a liquid crystal element constituted by using the color filter is 144 mm × 1
This corresponds to a 9.4 inch size of 92 mm and a diagonal length of 240 mm.

[0057]

Example 1 An alkali-free glass substrate (“# 1737” manufactured by Corning Incorporated) having a thickness of 0.7 mm was subjected to alkali ultrasonic cleaning using a 2% aqueous sodium hydroxide solution.
Next, after performing UV ozone treatment, a resist material containing carbon black (a negative resist ink for black matrix “V-25” manufactured by Nippon Steel Chemical Co., Ltd.) was formed on the glass substrate.
9 BK739P ”) was applied using a die coater to a film thickness of 1 μm. The glass substrate was heated at 80 ° C. for 180 seconds using a hot plate to temporarily cure the resist. Next, using a DEEP-UV exposure apparatus, proximity exposure is performed using a predetermined pattern mask, subsequently developed using a developer of an inorganic alkali aqueous solution using a spin developing machine, and further rinsed with pure water, The developer was completely removed to obtain a substrate having a black matrix also serving as a partition having a predetermined pattern shape.

On the above-mentioned substrate, as a heterogeneous member, a particle size of about 1.
2 μm substantially spherical porous silica particles (“Shin Ball” manufactured by Catalyst Chemical Industry Co., Ltd.) were sprayed. Thereafter, the black matrix was heated at 200 ° C. for 30 minutes in a clean oven to completely cure the black matrix. During this treatment, the porous silica particles adhered more strongly to the glass substrate surface than to the black matrix surface. Next, the substrate surface was washed with a pure water shower to remove porous silica particles on the black matrix surface, and further heated in a clean oven to remove moisture.

To each opening of the black matrix, 230 μl of each of the R, G, and B curable inks having the above-described compositions was applied by an ink-jet method.
After preheating for 10 minutes, each ink was cured by heating at 230 ° C. for 30 minutes to obtain a color filter as an optical component of the present invention.

[Ink composition] Dye 6% by weight Styrene acrylic resin 3% by weight Ethylene glycol 20% by weight Diethylene glycol 20% by weight Water 51% by weight

The obtained color filter has no color mixture,
It was of high quality. In addition, when a liquid crystal element was formed using the color filters by a conventional method (liquid crystal: “ZLI-4792” manufactured by Merck), a bright display with a wide viewing angle was obtained.

When a color filter was produced in the same process except that no porous silica particles were used, color mixing occurred.

Example 2 A silicone release agent was applied to both sides of a high-density polyethylene (HDPE) film having a thickness of 5 μm so that the dry film thickness was 0.1 μm or less, and dried. Was coated uniformly with a photocurable black resin composition having the following composition to a dry film thickness of 1.5 μm, prebaked at 85 ° C., and wound up.

[Photocurable Black Resin Composition] Novolak resin 10% by weight Diazonaphthoquinonesulfonic acid ester 1% by weight Carbon black 10% by weight Polyethylene glycol monomethyl ether acetate 79% by weight

An opaque light-reflective substrate having a thickness of 0.7 mm was prepared, and an ITO electrode was formed on the entire surface. The HDPE film on which the photocurable black resin composition is laminated is cut into an appropriate size, the film is laminated so that the black resin composition layer is in contact with the ITO electrode, and heat and heat are applied at a temperature of 90 ° C. or lower. After laminating by applying pressure, only the HDPE film was peeled off to transfer the black resin composition layer.

Then, through a photomask having a desired pattern, UV exposure was performed at an exposure amount of 30 mJ / cm ² , and development and rinsing were performed in a usual manner to form a black matrix having the same pattern as in Example 1. .

Glass beads having a particle size of about 1.2 μm as a heterogeneous member were sprayed on the substrate on which the black matrix was formed. Next, 230 μl of the same curable ink as in Example 1 was applied to the openings of the black matrix by the ink jet method, preliminarily heated at 80 ° C. for 10 minutes, and then cured by heating at 230 ° C. for 30 minutes to obtain the color of the present invention. I got a filter.

The obtained color filter has no color mixture,
It was of high quality. The color filter, a liquid crystal having a positive dielectric anisotropy and exhibiting a cholesteric phase,
When a liquid crystal device of a phase transition type guest-host mode was formed using a transparent dichroic dye, a bright display with a wide viewing angle was obtained.

When a color filter was produced in the same process except that no glass beads were used, color mixing occurred.

[0070]

As described above, according to the present invention,
A color filter satisfying required characteristics such as heat resistance, solvent resistance, and resolution can be manufactured by a simple method. In particular, according to the present invention, even in an ink jet system, a color filter can be manufactured with a high yield without causing color mixing, color unevenness, or color omission, and a liquid crystal having excellent color display characteristics can be manufactured using the color filter. The element can be provided at lower cost.

[Brief description of the drawings]

FIG. 1 is a process chart of an example of a method for manufacturing a color filter which is an embodiment of the optical component of the present invention.

FIG. 2 is a schematic cross-sectional view of an example of a liquid crystal element which is an embodiment of the optical component of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transparent substrate 2 Black matrix 3 Dissimilar member 4 Curable ink 5 Colored part 6 Protective film 7 Common electrode 8, 13 Alignment film 9 Liquid crystal 11 Opposite substrate 12 Pixel electrode

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Akio Kashiwazaki 3-30-2 Shimomaruko, Ota-ku, Tokyo F-term in Canon Inc. (reference) 2C056 FB01 2H042 AA09 AA15 2H048 BA11 BA64 BB24 BB44 2H091 FA02Y FA35Y FB02 FD04 FD14 FD24 GA13

Claims (13)

[Claims] 1. A method for manufacturing an optical component having at least a plurality of colored portions and a partition separating adjacent colored portions on a substrate, comprising: forming a partition having a plurality of openings on the substrate; A step of attaching a different kind of member made of a material different from the coloring part forming material to the opening of the above-mentioned partition, and applying a curing type ink to the inside of the opening of the partition to which the above-mentioned different kind of part is attached and curing it to form a coloring part. And a method of manufacturing an optical component. 2. The production of an optical component according to claim 1, wherein the area occupied by the two-dimensional projection of the dissimilar member onto the substrate plane is 50% or less of the area of the substrate surface exposed to the opening of the partition wall. Method. 3. The method for manufacturing an optical component according to claim 1, wherein the different kind of member is spherical. 4. The method according to claim 1, wherein said heterogeneous member is porous.
4. The method for manufacturing an optical component according to any one of items 3. 5. The method according to claim 1, wherein said different member is colorless and transparent.
5. The method for producing an optical component according to any one of items 1 to 4. 6. The method for manufacturing an optical component according to claim 1, wherein the curable ink contains at least a colorant and a resin composition which is cured by light irradiation, heating, or both. 7. The method for manufacturing an optical component according to claim 1, wherein the means for applying the curable ink into the opening of the partition is an ink jet method. 8. A substrate having at least a plurality of colored portions and a partition wall separating adjacent colored portions on the substrate, wherein the colored portions include different kinds of members made of a material different from the material for forming the colored portions. An optical component manufactured by the method for manufacturing an optical component according to any one of claims 1 to 7. 9. The optical component according to claim 8, wherein the partition is a light shielding layer. 10. The optical component according to claim 8, having a protective film on the colored portion. 11. The color filter according to claim 8, wherein the color filter is a color filter.
An optical component according to any one of the above. 12. An optical element comprising the optical component according to claim 8. Description: 13. A liquid crystal sandwiched between a pair of substrates,
An optical element, wherein one of the substrates is a liquid crystal element using the optical component according to claim 10.