JP2011138065A - Method for manufacturing color filter, color filter, image display device and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a color filter having excellent adhesion between a light-shielding portion and a colored portion, and displaying an image with excellent contrast. <P>SOLUTION: A method for manufacturing a color filter includes the steps of: adding a composition for forming a light-shielding portion, the composition containing a photosensitive material and a thermosetting resin, onto a substrate; exposing the photosensitive material to give a high-solubility portion which is highly soluble in a developing solution and a low-solubility portion which is hardly soluble in the developing solution to the composition for forming a light-shielding portion; developing the composition to form a plurality of cells as a space partitioned by the low-solubility portion; adding a material for forming a colored portion, the material containing a dye and a thermosetting resin, into the cell; and heating to cure the thermosetting resin included in the composition for forming a light-shielding portion so as to form a light-shielding portion as well as to cure the thermosetting resin included in the material for forming a colored portion so as to form a colored portion. The composition for forming a light-shielding portion and the material for forming a colored portion contain the same type of a thermosetting resin component. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a color filter manufacturing method, a color filter, an image display device, and an electronic apparatus.

A color filter is generally used for a liquid crystal display (LCD) or the like that performs color display. The color filter is generally provided with three colored portions corresponding to the three primary colors of light, red (R), green (G), and blue (B). In a liquid crystal display device equipped with a color filter, Color display is performed by adjusting the amount of light transmitted through the colored portions of these colors.
For the purpose of improving the contrast ratio of the display image, a light shielding portion is provided between the colored portions.

  A color filter has conventionally formed a coating film composed of a material (colored portion forming material) containing a colorant, a photosensitive material, a functional monomer, a polymerization initiator, etc. on a substrate, and then through a photomask. Have been manufactured using a so-called photolithography method in which a light-sensitive process, a development process, and the like are performed. In such a method, the colors are usually overlapped by repeating the operation of forming a coating film corresponding to each color on almost the entire surface of the substrate, curing only a part thereof, and removing most of the other part. Manufacture color filters so that they do not match. For this reason, the coating film formed in the production of the color filter has only a part remaining as a colored part in the finally obtained color filter, and most of it is removed in the production process. Become. For this reason, not only the manufacturing cost of a color filter rises but it is not preferable also from a viewpoint of resource saving.

  On the other hand, in recent years, a method (a manufacturing method by an ink jet method) for forming a colored portion of a color filter using an ink jet head (droplet discharge head) has been proposed (for example, see Patent Document 1). In such a method, since the coloring part forming material (coloring part forming material) is provided in the cell as the space partitioned by the light shielding part, the waste of the coloring part forming material is reduced and the environment is reduced. The manufacturing cost can be reduced.

However, in the conventional method, it is difficult to make the adhesion between the light-shielding part and the colored part sufficiently excellent, and the light-shielding part and the colored part are used due to long-term use or use in a high temperature environment. Cracks or the like may occur between the two and light leakage may occur.
In addition, in the conventional manufacturing method using the ink jet method, the above-described problems are particularly likely to occur, and there is also a problem that it is difficult to make the contrast of the display image sufficiently high.

JP 2008-225124 A

  An object of the present invention is to provide a color filter that has excellent adhesion between a light-shielding part and a colored part and can display an image with excellent contrast, and a color filter that can efficiently produce the color filter. And an image display device and an electronic device provided with the color filter.

Such an object is achieved by the present invention described below.
The method for producing a color filter of the present invention includes a light-shielding part-forming composition application step for providing a light-shielding part-forming composition containing a photosensitive material and a thermosetting resin on a light-transmitting substrate;
By irradiating the light shielding part forming composition with light in a predetermined pattern, the solubility of the photosensitive material in the developer is changed, and the light shielding part forming composition is made relatively to the developer. An exposure step having a highly soluble portion having high solubility and a hardly soluble portion having relatively low solubility;
A developing step of forming a plurality of cells as spaces partitioned by the hardly soluble portion by removing the easily soluble portion;
In the cell, a colored part forming material application step for providing a colored part forming material containing a dye and a thermosetting resin,
The thermosetting resin contained in the light shielding part forming composition is cured by heating to form a light shielding part, and the thermosetting resin contained in the colored part forming material is cured to form a colored part. A process,
The light shielding part forming composition and the colored part forming material contain the same kind of thermosetting resin component.
Thereby, the manufacturing method of the color filter which can manufacture efficiently the color filter which can display the image which was excellent in the adhesiveness of a light-shielding part and a coloring part and excellent in contrast can be provided.

In the method for producing a color filter of the present invention, the content of the thermosetting resin in the solid content of the light shielding part forming composition is 15.0 wt% or more,
The content of the thermosetting resin in the solid content of the colored portion forming material is preferably 15.0 wt% or more.
Thereby, about the color filter manufactured, the adhesiveness of a light-shielding part and a coloring part and the contrast of a display image can be made especially excellent.

In the method for producing a color filter of the present invention, it is preferable that the colored portion forming material is applied to the cell by ejection using an inkjet method.
Thereby, the waste of the material used for manufacture of a color filter can be reduced, and the burden on the environment can be reduced. Further, conventionally, when the manufacturing method using the ink jet method is used, the problem that the adhesion between the light-shielding portion and the colored portion and the contrast of the display image cannot be sufficiently increased has been more remarkable. Therefore, even when applied to a manufacturing method using an ink jet method, it is possible to reliably prevent the occurrence of the above problems. That is, the effect of the present invention is particularly prominent when applied to a method of applying a coloring portion forming material into a cell by ejection using an inkjet method.

The method for producing a color filter of the present invention includes a liquid repellent treatment step of performing a liquid repellent treatment on the surface of the hardly soluble portion opposite to the surface facing the substrate prior to the colored portion forming material application step. It is preferable.
Thereby, while making the adhesion between the light shielding part and the colored part excellent, in the colored part forming material application step, the colored part forming material to be applied between adjacent cells is mixed on the light shielding part. It can prevent more reliably. As a result, it is possible to more reliably prevent a decrease in the contrast of the display image and a decrease in the image quality of the display image due to color mixing while sufficiently improving the durability of the manufactured color filter.

In the method for producing a color filter of the present invention, as the colored portion forming material, a red colored portion forming material that exhibits red, a green colored portion forming material that exhibits green, and a blue colored portion forming material that exhibits blue Use
It is preferable to apply these three kinds of coloring portion forming materials in the cells different from each other.
Thereby, the color reproduction range of the manufactured color filter can be made sufficiently wide.

The color filter of the present invention is manufactured using the method of the present invention.
Thereby, the color filter which is excellent in the adhesiveness of a light-shielding part and a coloring part and can display an image excellent in contrast can be provided.
The color filter of the present invention includes a substrate having optical transparency,
A light shielding portion provided on the substrate and made of a light shielding material;
A color filter having a plurality of colored portions respectively provided in a plurality of spaces partitioned by the light shielding portion,
The light-shielding portion is composed of a material including a photosensitive material and a cured product of a thermosetting resin,
The colored portion is made of a material containing a cured product of a thermosetting resin and a dye.
Thereby, the color filter which is excellent in the adhesiveness of a light-shielding part and a coloring part and can display an image excellent in contrast can be provided.

An image display device according to the present invention includes the color filter according to the present invention.
As a result, it is possible to provide an image display apparatus that can reliably prevent the occurrence of problems such as light leakage and can display an image with excellent contrast.
An electronic apparatus according to the present invention includes the image display device according to the present invention.
Accordingly, it is possible to provide an electronic apparatus that can reliably prevent the occurrence of problems such as light leakage and can display an image with excellent contrast.

It is sectional drawing which shows suitable embodiment of the color filter of this invention. It is sectional drawing which shows the manufacturing method of a color filter. In the manufacturing method of this invention, it is sectional drawing for demonstrating the mechanism presumed that the surface of the coloring part formed is planarized effectively. It is a perspective view which shows the droplet discharge apparatus used for manufacture of a color filter. It is sectional drawing which shows embodiment of a liquid crystal display device. 1 is a perspective view illustrating a configuration of a mobile (or notebook) personal computer to which an electronic apparatus of the present invention is applied. It is a perspective view which shows the structure of the mobile telephone (PHS is also included) to which the electronic device of this invention is applied. It is a perspective view which shows the structure of the digital still camera to which the electronic device of this invention is applied.

Hereinafter, preferred embodiments of the present invention will be described in detail.
"Color filter"
First, the color filter of the present invention will be described.
FIG. 1 is a cross-sectional view showing a preferred embodiment of the color filter of the present invention. Note that the drawings referred to in this specification show part of the configuration in an emphasized manner, and do not accurately reflect actual dimensions and the like.

  As shown in FIG. 1, the color filter 1 includes a substrate 11, a colored portion (colored layer) 12 formed using a colored portion forming material, and a light shielding portion formed using a light shielding portion forming composition. 13. The coloring part 12 includes three kinds of coloring parts (a first coloring part 12A, a second coloring part 12B, and a third coloring part 12C) that exhibit different color tones. In particular, in the present embodiment, as the coloring portion 12, a red coloring portion (first coloring portion) 12A that exhibits red, a green coloring portion (second coloring portion) 12B that exhibits green, and a blue coloring that exhibits blue Part (third colored part) 12C. Thereby, the color reproduction range of the color filter 1 can be made sufficiently wide. The first colored portion 12A is formed using a red colored portion forming material, and the second colored portion 12B is formed using a green colored portion forming material. The colored portion 12C is formed using a blue colored portion forming material.

<Board>
The substrate 11 is a plate-like member having light transmittance, and has a function of holding the coloring portion 12 and the light shielding portion 13.
The substrate 11 may be any material as long as it has optical transparency, but is preferably composed of a substantially transparent material. Thereby, a clearer image can be formed by the light transmitted through the color filter 1.

  The substrate 11 is preferably excellent in heat resistance and mechanical strength. Thereby, for example, deformation due to heat applied during the manufacture of the color filter 1 can be reliably prevented. Examples of the constituent material of the substrate 11 that satisfies such conditions include glass, silicon, polycarbonate, polyester, aromatic polyamide, polyamideimide, polyimide, norbornene-based ring-opening polymer, and hydrogenated products thereof.

<Coloring part>
The colored part 12 is formed using a colored part forming material (colored part forming material containing a dye and a thermosetting resin) which will be described in detail later. Since the colored portion 12 is made of a material containing a dye, the display image by the color filter 1 is excellent in contrast.
Each coloring portion 12 is provided in a cell 14 which is a region surrounded by a light shielding portion 13 described later.

  As described above, the first coloring portion 12A, the second coloring portion 12B, and the third coloring portion 12C exhibit different color tones. One set of colored portions 12A, 12B, and 12C having different color tones constitutes one pixel. In the color filter 1, a predetermined number of colored portions 12 are arranged in the horizontal direction and the vertical direction. For example, when the color filter 1 is a high-definition color filter, 1366 × 768 pixels are arranged, and when the color filter 1 is a full high-definition color filter, 1920 × 1080 pixels are arranged. In the case of a super high vision color filter, 7680 × 4320 pixels are arranged. Note that the color filter 1 may be provided with a spare pixel outside the effective area, for example.

<Light shielding part>
Between the adjacent colored portions 12, a light shielding portion 13 made of a light shielding material is provided. Thereby, the contrast of the display image using the color filter 1 can be made excellent. The color of the light shielding part 13 is not particularly limited, but is preferably black. Thereby, the contrast of the displayed image can be made particularly excellent.
Further, as will be described in detail later, the light-shielding portion 13 is a composition for forming a light-shielding portion containing a photosensitive material and a thermosetting resin (the same kind of thermosetting as the thermosetting resin component contained in the colored portion-forming material). The light-shielding part-forming composition containing a resin component is formed using a material containing a photosensitive material and a cured product of a thermosetting resin. For this reason, the adhesion between the colored portion 12 and the light shielding portion 13 is excellent, and the color filter 1 is excellent in durability. In addition, the mechanism estimated about becoming the thing excellent in the adhesiveness of the coloring part 12 and the light-shielding part 13 is explained in full detail behind.

  The height of the light shielding part 13 is not particularly limited, but is preferably substantially the same as the film thickness of the colored part 12, and the specific thickness of the light shielding part 13 is preferably 0.1 μm or more and 10 μm or less. More preferably, it is 0.5 μm or more and 3.5 μm or less. As a result, color mixing between the adjacent colored portions 12 during the manufacture of the color filter 1 can be reliably prevented, and the viewing angle characteristics of the image display device and electronic apparatus provided with the color filter 1 are excellent. It can be.

《Color filter manufacturing method》
Next, an example of a manufacturing method of the color filter 1 as described above, in particular, an example of a manufacturing method using a photosensitive material that is cured by exposure and has reduced solubility in a developing solution will be described.
FIG. 2 is a cross-sectional view showing a method for manufacturing a color filter, and FIG. 3 is a diagram for explaining a mechanism presumed that the surface of a colored portion to be formed is effectively flattened in the manufacturing method of the present invention. FIG. 4 is a perspective view showing a droplet discharge device used for manufacturing a color filter.
As shown in FIG. 2, the color filter manufacturing method of the present embodiment includes a substrate preparation step (1 a) for preparing a light-transmitting substrate 11, and a photosensitive material and a thermosetting resin on the substrate 11. The composition for forming a light-shielding part is applied in a predetermined pattern via a photomask 5 and a light-shielding part-forming composition application step (1b) for forming a coating film 3. Light is applied to the coating film 3 to change (decrease) the solubility of the photosensitive material constituting the light shielding part forming composition in the developer, and the relatively insoluble part (dissolved) having relatively low solubility (reduced) (Liquidity changing portion) 13 ′ and the liquid repellent for forming a lyophobic portion 131 ′ by applying a liquid repellency treatment to the surface of the hardly soluble portion 13 ′ opposite to the surface facing the substrate 11. Of processing step (1d) and coating film 3 formed on substrate 11, relatively dissolved A step (1e) of forming a plurality of cells 14 as spaces partitioned by the hardly soluble portion 13 ′ by removing a portion having a large area (easily soluble portion), and dye and thermosetting in the cell 14 The colored portion forming material applying step (1f) for applying the colored portion forming material 2 containing a resin, and the thermosetting resin contained in the hardly soluble portion 13 ′ (light shielding portion forming composition) is cured by heating. And a thermosetting step (1 g) in which the thermosetting resin contained in the colored portion forming material 2 is cured to form the colored portion 12.

<Board preparation process>
First, the substrate 11 as described above is prepared (1a). The substrate 11 prepared in this step is preferably subjected to a cleaning process. In addition, the substrate 11 prepared in this step has been subjected to appropriate pretreatment such as chemical treatment with a silane coupling agent or the like, plasma treatment, ion plating, sputtering, gas phase reaction method, vacuum deposition, and the like. Also good.

<Light shielding part forming composition application step>
Next, the light shielding part forming composition is applied to almost the entire surface of one side of the substrate 11 to form a coating film (light shielding part forming composition film) 3 (1b).
The light shielding part forming composition used in this step contains a photosensitive material and a thermosetting resin. The light shielding part forming composition will be described in detail later.

A method for forming the coating film 3 is not particularly limited, and examples thereof include coating methods such as spin coating, dipping, brush coating, spray coating, electrostatic coating, and electrodeposition coating.
In the case where the light shielding part forming composition contains a solvent that dissolves the photosensitive material and the thermosetting resin, in this step, after applying the light shielding part forming composition on the substrate 11, at least one of the solvents. The part may be removed.

<Exposure process>
Thereafter, light is applied to the coating film 3 of the light shielding part forming composition in a predetermined pattern through the photomask 5 to cure the photosensitive material constituting the light shielding part forming composition, thereby causing the hardly soluble part 13. '(1c). At this time, the thermosetting resin constituting the light shielding part forming composition (coating film 3) does not substantially contribute to the curing reaction, and a relatively low molecular weight state is maintained.

In the photomask 5 used in this step, a portion corresponding to a portion where the colored portion 12 is to be formed is a light transmitting portion 51, and the other portion is a light shielding portion 52 that prevents light transmission.
The light irradiated in this step may be in any wavelength region, and examples thereof include visible light, infrared light, ultraviolet light, and X-rays. Examples of the light irradiation conditions in this step, the light of peak wavelength: 248 nm or 436nm or less, the irradiation intensity: 60 mJ / cm ² or more 1200 mJ / cm ² or less can be mentioned.

<Liquid repellent treatment process>
A liquid repellent treatment is performed on the surface of the hardly soluble portion 13 ′ opposite to the surface facing the substrate 11 to form a liquid repellent portion 131 ′ (1d).
As a liquid repellent treatment method, for example, a fluororesin is applied to the coating film 3 on which the hardly soluble portion 13 ′ is formed by a stamp method or the like, or fluorine is applied to the surface of the hardly soluble portion 13 ′ by plasma polymerization treatment. The method of dope etc. is mentioned.

  In the color filter 1 to be manufactured by performing the liquid repellent treatment, the adhesion between the light shielding portion 13 and the colored portion 12 is excellent, and in the colored portion forming material application step described later, between adjacent cells 14. It can prevent more reliably that the coloring part formation material 2 which should be provided to is mixed on the light-shielding part 13. As a result, it is possible to more reliably prevent a decrease in the contrast of the display image, a decrease in the image quality of the display image due to color mixing, and the like while sufficiently improving the durability of the manufactured color filter 1. The lyophobic treatment may be performed prior to the coloring portion forming material application step described in detail later. For example, the lyophobic treatment may be performed after the development step. It is preferable to carry out before the process. As a result, the surface of the hardly soluble portion 13 ′ (surface opposite to the surface facing the substrate 11) can be selectively made liquid repellent. Moreover, it contributes to the further improvement of the flatness of the surface of the colored part 12 formed in a later step. In addition, the fluororesin is unevenly distributed in the vicinity of the surface of the coating film 3 (slightly soluble portion 13 ′) by adding a fluororesin having a specific gravity smaller than that of other constituent materials to the light shielding part forming composition And the same effects as described above can be obtained.

<Development process>
Thereafter, development processing is performed to remove a portion of the coating film 3 formed on the substrate 11 that has a relatively low solubility in the developer (easily soluble portion as a portion other than the hardly soluble portion 13 ′). Thus, a plurality of cells 14 are formed as spaces partitioned by the hardly soluble portion 13 ′ (1e). The development process can be performed by, for example, a liquid piling method, a dipping method, a vibration dipping method, or the like. Moreover, as a developing solution, an alkali developing solution etc. can be used, for example. Further, the development processing time can be, for example, not less than 10 seconds and not more than 300 seconds.

<Colored part forming material application step>
Thereafter, the colored portion forming material 2 containing a dye and a thermosetting resin is applied in the cell 14 (1f).
Since the coloring part forming material 2 used in this step contains a dye, the contrast of the display image by the produced color filter should be superior to the case where a material containing a pigment is used instead of the dye. Can do.

Moreover, the coloring part formation material 2 used at this process contains a thermosetting resin.
On the other hand, the hardly soluble portion 13 ′ formed using the light shielding portion forming composition also contains the same type of thermosetting resin component as the thermosetting resin component included in the colored portion forming material. For this reason, the light shielding part forming composition 2 quickly wets and spreads in the cell 14 partitioned by the hardly soluble part 13 ′, and between the hardly soluble part 13 ′ and the imparted light shielding part forming composition 2. The air bubbles are reliably prevented from remaining. As a result, problems such as light leakage can be more effectively prevented in the color filter 1 finally obtained.

The hardly soluble portion 13 ′ includes the same type of thermosetting resin component as the thermosetting resin component included in the colored portion forming material, but the photosensitive material is cured in the hardly soluble portion 13 ′. For this reason, the thermosetting resin component or the like is reliably prevented from flowing out from the hardly soluble portion 13 ′, and the adverse effect on the color tone or the like of the formed colored portion 12 is reliably prevented. In particular, even when the coloring part forming material contains a solvent having high solubility of the thermosetting resin component, it is possible to reliably prevent the outflow of the thermosetting resin component and the like and adverse effects thereof. .
The colored part forming material will be described later in detail.

In the present embodiment, this step is performed by applying the coloring portion forming material 2 into the cell 14 by an inkjet method.
In this way, by performing the coloring portion forming material application step by an ink jet method, waste of materials used for manufacturing the color filter can be reduced, and the burden on the environment can be reduced. Further, conventionally, when the manufacturing method using the ink jet method is used, the problem that the adhesion between the light-shielding portion and the colored portion and the contrast of the display image cannot be sufficiently increased has been more remarkable. Therefore, even when applied to a manufacturing method using an ink jet method, it is possible to reliably prevent the occurrence of the above problems. That is, the effect of the present invention is particularly prominent when applied to a method of applying a coloring portion forming material into a cell by ejection using an inkjet method.

  In the present embodiment, a plurality of types of colored portion forming materials 2 (a red colored portion forming material, a green colored portion forming material, and a blue colored portion forming material) corresponding to the colored portions 12 to be formed are formed. To do. At this time, since the hardly soluble portion 13 ′ is provided, it is reliably prevented that two or more kinds of the coloring portion forming materials 2 are mixed. In particular, by performing the lyophobic treatment as described above, it is more reliably prevented that two or more kinds of the coloring portion forming materials 2 are mixed.

The colored portion forming material 2 is discharged using a droplet discharge device as shown in FIG.
As shown in FIG. 4, the droplet discharge device 100 used in this step includes a tank 101 that holds the colored portion forming material 2 and a tube (liquid feeding tube) that feeds the colored portion forming material 2 in the tank 101. ) 110 and a discharge scanning unit 102 to which the coloring portion forming material 2 is supplied from the tank 101 via the tube 110. The ejection scanning unit 102 includes a droplet ejection unit 103 in which a plurality of droplet ejection heads (inkjet heads) are mounted on a carriage, and a first position control device 104 (moving unit) that controls the position of the droplet ejection unit 103. A stage 106 that holds the substrate 11 (hereinafter also simply referred to as “substrate 11”) on which the poorly soluble portion 13 ′ is formed in the above process, and a second position control device 108 that controls the position of the stage 106 (movement) Means) and a control means 112. The tank 101 and a plurality of droplet discharge heads in the droplet discharge means 103 are connected by a tube (liquid supply tube) 110, and a plurality of liquid droplets are discharged from the tank 101 via the tube (liquid supply tube) 110. The colored portion forming material 2 is supplied to each of the discharge heads by compressed air.

  The first position control device 104 moves the droplet discharge means 103 along the X-axis direction and the Z-axis direction orthogonal to the X-axis direction in response to a signal from the control means 112. Further, the first position control device 104 also has a function of rotating the droplet discharge means 103 around an axis parallel to the Z axis. In the present embodiment, the Z-axis direction is a direction parallel to the vertical direction (that is, the direction of gravitational acceleration). The second position controller 108 moves the stage 106 along the Y-axis direction orthogonal to both the X-axis direction and the Z-axis direction in response to a signal from the control unit 112. Further, the second position control device 108 also has a function of rotating the stage 106 around an axis parallel to the Z axis.

The stage 106 has a plane parallel to both the X-axis direction and the Y-axis direction. Moreover, the stage 106 is comprised so that the board | substrate 11 which has the cell 14 which should give the coloring part formation material 2 can be fixed or hold | maintained on the plane.
As described above, the droplet discharge means 103 is moved in the X-axis direction by the first position control device 104. On the other hand, the stage 106 is moved in the Y-axis direction by the second position control device 108. That is, the first position control device 104 and the second position control device 108 change the relative position of the droplet discharge head with respect to the stage 106 (the substrate 11 held on the stage 106 and the droplet discharge means 103 are relatively Moving).

The control unit 112 is configured to receive ejection data representing a relative position at which the coloring portion forming material 2 is to be ejected from an external information processing apparatus.
Using the droplet discharge device 100 as described above, the colored portion forming material 2 corresponding to the colored portions 12 of the plurality of colors included in the color filter 1 is applied into the cell 14. By using the apparatus as described above, the colored portion forming material 2 can be efficiently and selectively applied to the cells 14. In the illustrated configuration, the droplet discharge device 100 has only one tank 101, a tube 110, and the like for holding the coloring portion forming material 2, but the color filter 1 has these members. You may have for several colors corresponding to the coloring part 12 of multiple colors. In manufacturing the color filter 1, a plurality of droplet discharge devices 100 corresponding to the coloring portion forming material 2 of a plurality of colors may be used.

In the present invention, the droplet discharge head may use a piezo element or an electrostatic actuator as a drive element. In addition, the droplet discharge head may be configured to use an electrothermal conversion element as a drive element and discharge the color filter ink by utilizing thermal expansion of a material by the electrothermal conversion element.
In addition, when the colored portion forming material includes a solvent that dissolves the dye, prior to the thermosetting step described later, after applying the colored portion forming material in the cell 14 in this step, at least a part of the solvent is added. It may be removed.

<Thermosetting process>
Thereafter, by heating, the thermosetting resin contained in the hardly soluble portion 13 ′ (light shielding part forming composition) is cured to form the light shielding part 13, and the thermosetting resin contained in the colored part forming material 2. Is cured to form a colored portion 12 (1 g). Thereby, the color filter 1 is obtained.
By the way, in this invention, the composition for light-shielding part formation and the material for colored part formation contain the same kind of thermosetting resin component. For this reason, the thermosetting resin contained in the hardly soluble portion 13 ′ (the light shielding portion forming composition) and the thermosetting resin contained in the colored portion forming material 2 are strong when cured in this step. The adhesion between the light-shielding portion 13 and the colored portion 12 that are formed by combining with each other is very excellent. Moreover, although this process is performed by heating, since the polymerization of the thermosetting resin has not sufficiently progressed and the coefficient of thermal expansion is large for the hardly soluble portion 13 ′, Polymerization of the thermosetting resin proceeds (2b) with the hardly-fusible part 13 ′ having been thermally expanded pushed up the colored part forming material 2 having high fluidity (2c). When the light-shielding portion 13 is released from the heated state, the light-shielding portion 13 shrinks with a large shrinkage rate, and the formed colored portion 12 is in a state where tension is applied to the light-shielding portion 13 side, and the surface has high flatness ( 2d). Therefore, even if unintentional irregularities occur on the surface of the formed colored portion 12 in a heated state (a high temperature state applied in this step), under the normal use conditions of the color filter 1. The flatness of the surface of the colored portion 12 can be made sufficiently high. As a result, the contrast of the display image using the color filter 1 can be reliably increased (see FIG. 3). Such an effect is obtained when the polymerization of the thermosetting resin in the light shielding part forming composition is not sufficiently progressed when it is subjected to the thermosetting step, and the thermosetting When it is used in the process, it cannot be obtained when the curing reaction of the curable resin in the light shielding part forming composition has sufficiently progressed. Further, even when the light shielding part forming composition contains a thermosetting resin, when the light shielding part forming composition and the colored part forming material do not contain the same type of thermosetting resin component, Such excellent effects cannot be obtained.

Moreover, when the coloring part forming material 2 contains a solvent in this step, the solvent is usually removed in this step. In this step, since heat treatment is usually performed at a relatively high temperature, even if the solvent is contained in the hardly soluble portion 13 ′, the solvent can be reliably removed in this step. Thus, it is possible to prevent the solvent from remaining in the formed light shielding portion 13. Similarly, the solvent is prevented from remaining in the colored portion 12 formed in this step. As a result, the durability and reliability of the color filter 1 can be made particularly excellent.
In the present invention, the “same kind of thermosetting resin component” refers to resin components having the same constituent monomers (monomer components). The same kind of thermosetting resin component contained in the coloring part forming material and the light shielding part forming composition preferably has the same ratio of the constituent monomers to each other, and further has the same weight average molecular weight. Is more preferable.

The heating temperature in this step is not particularly limited, but is preferably 100 ° C. or higher and 280 ° C. or lower, and more preferably 110 ° C. or higher and 250 ° C. or lower. As a result, the adhesion between the colored portion 12 and the light shielding portion 13 can be made particularly excellent, the flatness of the colored portion 12 is made particularly high, and the contrast of the display image using the color filter 1 is particularly high. It can be excellent. Further, the productivity of the color filter 1 can be made particularly excellent.
Moreover, the heating time in this step is not particularly limited, but is preferably 30 minutes or longer and 190 minutes or shorter, and more preferably 40 minutes or longer and 130 minutes or shorter. As a result, the adhesion between the colored portion 12 and the light shielding portion 13 can be made particularly excellent, the flatness of the colored portion 12 is made particularly high, and the contrast of the display image using the color filter 1 is particularly high. It can be excellent.

In this step, a plurality of heat treatments with different temperatures may be performed. Specifically, in this step, a first heat treatment in which heating is performed at a relatively low temperature and a second heat treatment in which heating is performed at a higher temperature than the first heat treatment may be performed.
Thereby, the adhesion between the colored portion 12 and the light-shielding portion 13 is made particularly excellent while preventing unintentional deterioration and decomposition of the constituent material of the light-shielding portion 13 and the colored portion 12, and the colored portion 12. The flatness can be made particularly high. Further, the productivity of the color filter 1 is further improved, and further, it is possible to more reliably prevent the solvent from remaining in the formed light shielding portion 13 or the solvent from remaining in the formed colored portion 12. be able to.
In such a case, by heating at a relatively low temperature in the first heat treatment, when the colored portion forming material 2 contains a solvent, the colored portion forming material 2 is gently prevented while preventing convection. Since the fluidity can be lost or reduced with the solvent removed and the surface of the colored portion forming material 2 made flat, the flatness of the colored portion 12 of the color filter 1 to be obtained is particularly high. The contrast of the display image using the color filter 1 can be further improved.

  As described above, when the first heat treatment and the second heat treatment are performed in this step, the treatment temperature in the first heat treatment (the temperature of the heated substrate 11) is not particularly limited, but is 30 ° C. The temperature is preferably 100 ° C. or lower and more preferably 40 ° C. or higher and 80 ° C. or lower. Thereby, a solvent can be suitably removed from the colored part forming material 2 while reliably preventing convection of the colored part forming material 2.

The time for the first heat treatment is not particularly limited, but is preferably 3 minutes or longer and 50 minutes or shorter, and more preferably 5 minutes or longer and 40 minutes or shorter.
The treatment temperature in the second heat treatment (the temperature of the heated substrate 11) is not particularly limited, but is preferably 120 ° C. or higher and 280 ° C. or lower, and more preferably 150 ° C. or higher and 250 ° C. or lower. preferable.

The time for the second heat treatment is not particularly limited, but is preferably 25 minutes or more and 150 minutes or less, and more preferably 30 minutes or more and 100 minutes or less.
Moreover, in this process, you may perform the process of placing the board | substrate 11 to which the coloring part formation material 2 was provided in a pressure-reduced environment, for example.
Next, the coloring part forming material and the light shielding part forming composition used in the production of the color filter as described above will be described in detail.

<Colored part forming material>
The colored portion forming material is a material used for forming the colored portion of the color filter, and is composed of a material containing a dye and a thermosetting resin.
(dye)
When the coloring part forming material contains a dye as a coloring agent, the contrast of the display image by the produced color filter can be made particularly excellent.

  Examples of the dye include azo dyes, anthraquinone dyes, condensed polycyclic aromatic carbonyl dyes, indigoid dyes, carbonium dyes, phthalocyanine dyes, methine, and polymethine dyes. Specific examples of the dye include C.I. I. Direct Red 2, 4, 9, 23, 26, 28, 31, 39, 62, 63, 72, 75, 76, 79, 80, 81, 83, 84, 89, 92, 95, 111, 173, 184 207, 211, 212, 214, 218, 221, 223, 224, 225, 226, 227, 232, 233, 240, 241, 242, 243, 247; I. Acid Red 35, 42, 51, 52, 57, 62, 80, 82, 111, 114, 118, 119, 127, 128, 131, 143, 145, 151, 154, 157, 158, 211, 249, 254 257, 261, 263, 266, 289, 299, 301, 305, 319, 336, 337, 361, 396, 397; I. Reactive Red 3, 13, 17, 19, 21, 22, 23, 24, 29, 35, 37, 40, 41, 43, 45, 49, 55; I. B. Basic Red 12, 13, 14, 15, 18, 22, 23, 24, 25, 27, 29, 35, 36, 38, 39, 45, 46; I. Direct violet 7, 9, 47, 48, 51, 66, 90, 93, 94, 95, 98, 100, 101; I. Acid Violet 5, 9, 11, 34, 43, 47, 48, 51, 75, 90, 103, 126; I. Reactive violet 1,3,4,5,6,7,8,9,16,17,22,23,24,26,27,33,34; I. B. Basic violet 1, 2, 3, 7, 10, 15, 16, 20, 21, 25, 27, 28, 35, 37, 39, 40, 48; I. Direct yellow 8, 9, 11, 12, 27, 28, 29, 33, 35, 39, 41, 44, 50, 53, 58, 59, 68, 87, 93, 95, 96, 98, 100, 106, 108, 109, 110, 130, 142, 144, 161, 163; I. Acid Yellow 17, 19, 23, 25, 39, 40, 42, 44, 49, 50, 61, 64, 76, 79, 110, 127, 135, 143, 151, 159, 169, 174, 190, 195 196, 197, 199, 218, 219, 222, 227; I. Reactive Yellow 2, 3, 13, 14, 15, 17, 18, 23, 24, 25, 26, 27, 29, 35, 37, 41, 42; I. Basic yellow 1, 2, 4, 11, 13, 14, 15, 19, 21, 23, 24, 25, 28, 29, 32, 36, 39, 40; I. Acid Green 16; C.I. I. Acid Blue 9, 45, 80, 83, 90, 185; C.I. I. C. Basic Orange 21, 23; I. Disper thread 54, 60, 73, 92; I. Disperse yellow 51, 54, 64, 79; C.I. I. Disperse blue 56, 79, 81, 139; I. Solvent Red 23, 24, 26; C.I. I. Solvent Yellow 2, 7, 14; C.I. I. Solvent Blue 37, 38 and the like can be mentioned, and one or more selected from these can be used in combination.

  The content of the dye in the coloring portion forming material is preferably 2 wt% or more and 25 wt% or less, and more preferably 3 wt% or more and 20 wt% or less. When the dye content is within the above range, the discharge performance (discharge stability) from the droplet discharge head (inkjet head) for the color filter is particularly excellent, and the durability of the manufactured color filter The property can be made excellent. Further, a sufficient color density can be secured in the manufactured color filter. In addition, the amount of the colored portion forming material required to form the colored portion having a predetermined color density can be reduced, which is advantageous from the viewpoint of resource saving. Moreover, since the volatilization amount of the dye when forming the colored portion of the color filter can be suppressed, the burden on the environment can be reduced.

(Thermosetting resin)
As described above, the colored portion forming material includes a thermosetting resin.
The thermosetting resin constituting the colored part forming material may be any material, but the colored part forming material preferably contains a material having an epoxy structure as a thermosetting resin component. Thereby, the adhesiveness of the coloring part 12 and the light-shielding part 13 can be made especially excellent.

  Moreover, it is preferable that the coloring part formation material contains what contains the monomer component represented by following formula (4) as a thermosetting resin component. Thereby, the adhesiveness of the coloring part 12 and the light-shielding part 13 can be made especially excellent.

  Moreover, it is preferable that the coloring part formation material contains what contains the monomer component represented by following formula (5) as a thermosetting resin component. Thereby, the adhesiveness of the coloring part 12 and the light-shielding part 13 can be made especially excellent. Moreover, the flatness of the surface of the colored part to be formed can be made particularly excellent. For this reason, when the colored portion forming material contains such a curable resin component, the contrast of a display image using a color filter can be made particularly excellent.

  As an example of the thermosetting resin component containing the monomer component as described above, one represented by the following formula (6) can be given.

  The weight average molecular weight of the thermosetting resin constituting the colored portion forming material is preferably 1000 or more and 50000 or less, and more preferably 2000 or more and 20000 or less. Thereby, the temporal stability (long-term storage stability) of the colored part forming material and the discharge stability of the colored part forming material can be made particularly excellent, and the productivity of the color filter is sufficiently excellent. Furthermore, the flatness of the colored part formed using the colored part forming material can be made more reliable, and the occurrence of color unevenness in the image displayed using the color filter is further improved. It can be effectively prevented.

Moreover, it is preferable that the dispersity (weight average molecular weight Mw / number average molecular weight Mn) of the coloring part forming material is 1 or more and 3 or less.
The content of the thermosetting resin in the colored portion forming material is preferably 0.5 wt% or more and 18 wt% or less, more preferably 1.0 wt% or more and 15 wt% or less, and 3.0 wt%. % To 12 wt% is more preferable.

In addition, the content of the thermosetting resin in the solid content of the colored portion forming material is preferably 15.0 wt% or more, and more preferably 28.0 wt% or more and 63.0 wt% or less. Thereby, about the manufactured color filter 1, the adhesiveness of the light-shielding part 13 and the coloring part 12 and the contrast of a display image can be made especially excellent.
In addition, the thermosetting resin which comprises the coloring part formation material may contain multiple types of resin components. The colored portion forming material contains the same type of thermosetting resin component as the thermosetting resin component constituting the light shielding portion forming composition to be described in detail later, but other thermosetting resin components (light shielding portions) It may further contain a thermosetting resin component having a composition different from the thermosetting resin component constituting the forming composition. However, the ratio of the same thermosetting resin component as the thermosetting resin component constituting the light-shielding portion forming composition in the entire thermosetting resin constituting the colored portion forming material is 50 wt% or more. Preferably, it is 80 wt% or more.

(solvent)
The colored part forming material usually contains a solvent that dissolves the dye in addition to the above dye and thermosetting resin. By including such a solvent, for example, the colored portion forming material application step (discharge of the colored portion forming material by an ink jet method) as described above can be suitably performed. Usually, most of the solvent is removed in the process of producing the color filter.

  As the solvent constituting the colored portion forming material, for example, an ester compound, an ether compound, a hydroxyketone, a carbonic acid diester, a cyclic amide compound and the like can be used. Among them, [1] a polyhydric alcohol (for example, ethylene glycol, Ethers (polyhydric alcohol ethers) as condensates of propylene glycol, butylene glycol, glycerin, etc.), polyhydric alcohols or alkyl ethers of polyhydric alcohol ethers (eg, methyl ether, ethyl ether, butyl ether, hexyl ether, etc.), Esters (eg, formate, acetate, propionate, etc.), [2] esters of polyvalent carboxylic acids (eg, succinic acid, glutaric acid, etc.) (eg, methyl esters), [3] at least one hydroxyl group in the molecule At least 1 Ether compounds of the with carboxyl group (hydroxy acid), esters and the like, (4) polyhydric alcohol and carbonic acid diester having a chemical structure as obtained in the reaction with phosgene is preferred.

The boiling point of the solvent under atmospheric pressure (1 atm) is preferably 160 ° C. or higher and 300 ° C. or lower, more preferably 180 ° C. or higher and 290 ° C. or lower, and further preferably 200 ° C. or higher and 280 ° C. or lower. . When the boiling point of the solvent under atmospheric pressure is within the above range, clogging or the like in the droplet discharge head that discharges the coloring portion forming material can be more effectively prevented, and the productivity of the color filter can be improved. It can be made particularly excellent.
Further, the vapor pressure of the solvent at 25 ° C. is preferably 0.7 mmHg or less, and more preferably 0.1 mmHg or less. When the vapor pressure of the solvent is within the above range, it is possible to more effectively prevent clogging and the like in the droplet discharge head that discharges the coloring portion forming material, and the color filter productivity is particularly excellent. Can be.

  The content of the solvent in the coloring portion forming material is preferably 50 wt% or more and 98 wt% or less, more preferably 60 wt% or more and 95 wt% or less, and further preferably 65 wt% or more and 93 wt% or less. . When the content of the solvent is a value within the above range, the color filter to be manufactured has excellent durability while the discharge property of the colored portion forming material from the droplet discharge head is particularly excellent. be able to. In addition, a sufficient color density can be ensured in the manufactured color filter.

(Other ingredients)
The coloring part forming material may contain components other than those described above. Examples of such components include various crosslinking agents, thermal acid generators, photoacid generators, various polymerization initiators, acid crosslinking agents, various pigments, surfactants, sensitizers, light stabilizers, and various dispersants. , Luminescent materials, leveling agents, antioxidants, UV absorbers, adhesion improvers, various polymerization accelerators, various light stabilizers, ceramics such as glass, zirconia, alumina, titanium oxide, adhesion promoters, UV absorbers Further, an aggregation inhibitor or the like can be used.

  A leveling agent smoothes the surface of the coloring part forming material provided in the cell by reducing the surface tension of the coloring part forming material, and flattens the coloring part. For this reason, when the coloring part forming material has a leveling agent, it acts synergistically with the effect of the thermosetting resin as described above, and the surface of the coloring part forming material in the cell is made flatter. be able to. For this reason, the colored part to be formed becomes flatter.

  Examples of the leveling agent include acrylic leveling agents, vinyl ether leveling agents, silicone leveling agents, fluorine-silicon leveling agents, and acetylene glycol leveling agents. Among such leveling agents, acrylic leveling agents, vinyl ether leveling agents, and acetylene glycol leveling agents are preferably used. In particular, it is preferable to use one or more selected from Surfinol DF-58, LHP-95, LHP-90, and LF1970 in combination. Thereby, the surface of the colored part to be formed is further flattened, and the obtained color filter has particularly small color unevenness and density unevenness in each part.

The antioxidant can prevent deterioration of the colored portion forming material due to oxidation or the like, and can prevent deterioration of the dye or resin material due to heat, light, etc. in the colored portion formed by the colored portion forming material. .
Examples of the antioxidant include various phosphorus-based antioxidants, various sulfur-based antioxidants, various hindered phenol-based antioxidants, various antioxidants such as various hindered amine-based antioxidants, and the like. Among these, it is preferable to use at least one of a hindered amine antioxidant and a hindered phenol antioxidant, more preferably a hindered phenol antioxidant, and even more preferably TINUVIN152. Such an antioxidant preferably effectively prevents the colored portion forming material and the colored portion from being deteriorated, and hardly affects the optical characteristics such as color, brightness, and contrast ratio in the formed colored portion. It is.

  The viscosity at 25 ° C. (viscosity measured using a vibration viscometer) of the colored part forming material is not particularly limited, but is preferably 4 mPa · s or more and 12 mPa · s or less, and preferably 5 mPa · s or more and 11 mPa · s. More preferably, it is s or less. When the viscosity of the colored portion forming material is a value within the above range, in the droplet discharge by the ink jet method, the variation in the appropriate amount of the liquid of the colored portion forming material to be discharged is particularly small, and in the droplet discharge head The occurrence of clogging and the like can be prevented more reliably. In addition, the measurement of the viscosity of the coloring part forming material can be performed using, for example, a vibration viscometer, and can be performed in particular according to JIS Z8809.

<Light shielding part forming composition>
The light shielding part forming composition is used for forming a light shielding part of a color filter, and is composed of a material including a photosensitive material and a thermosetting resin.
(Photosensitive material)
As described above, the photosensitive material changes in solubility in a developing solution in the exposure process.

Examples of the photosensitive material include those having an acrylic compound as a main component, those having a urethane acrylate oligomer or a polyester urethane acrylate oligomer as a main component, an epoxy resin, a vinylphenol resin, and the like.
Examples of the acrylic compounds include monomers of acrylic acid esters or methacrylic acid esters. Specifically, ethylene glycol diacrylate, ethylene glycol dimethacrylate, 1,6-hexanediol diacrylate, and 1,6 dimethacrylate. -Bifunctional acrylates such as hexanediol, glyceryl diacrylate, glyceryl dimethacrylate, 1,10-decanediol diacrylate, 1,10-decanediol dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate Polyfunctional acrylates such as pentaerythritol triacrylate, pentaerythritol trimethacrylate, dipentaerythritol hexaacrylate, dipentaerythritol hexamethacrylate, etc. That.
As the photosensitive material, a bisazide compound can be used.

The content of the photosensitive material (solid content) in the solid content of the light shielding part forming composition is preferably 15.0 wt% or more, more preferably 18.0 wt% or more and 50.0 wt% or less. preferable. Thereby, for example, with respect to the manufactured color filter 1, while making the adhesion between the light shielding portion 13 and the colored portion 12 sufficiently excellent, in the manufacturing process of the color filter 1, in a step after the exposure step, It is possible to more reliably prevent the thermosetting resin or the like from flowing out from the hardly soluble portion 13 ′ formed in the exposure process, and to adversely affect the color tone or the like of the formed colored portion 12. More reliably prevented.
In addition, the photosensitive material which comprises the composition for light shielding part formation may contain a multiple types of component.

(Thermosetting resin)
As above-mentioned, the thermosetting resin which comprises the composition for light-shielding part formation hardens | cures in a thermosetting process.
In this invention, the composition for light-shielding part formation contains the thermosetting resin component of the same kind as the thermosetting resin component contained in the coloring part formation material mentioned above.
Therefore, as the thermosetting resin constituting the light shielding part forming composition, the thermosetting resin described as the constituent material of the colored part forming material described above can be used.

  Moreover, the thermosetting resin component demonstrated as a constituent material of the coloring part forming material has a sufficiently low reactivity (photosensitivity) to light. For this reason, when the composition for light-shielding part formation contains the thermosetting resin component as described above, it is ensured that the thermosetting resin component undergoes an unintentional curing reaction (polymerization reaction) in the exposure step. The effect of the present invention can be exhibited more reliably.

The content of the thermosetting resin in the solid content of the light shielding part forming composition is preferably 15.0 wt% or more, more preferably 18.0 wt% or more and 50.0 wt% or less. . Thereby, about the manufactured color filter 1, the adhesiveness of the light-shielding part 13 and the coloring part 12 and the contrast of a display image can be made especially excellent.
When the content of the photosensitive material in the light shielding part forming composition is C _P [wt%] and the content of the thermosetting resin in the light shielding part forming composition is C _T [wt%] It is preferable that the relationship of 0.36 ≦ C _P / C _T ≦ 2.7 is satisfied, and it is more preferable that the relationship of 0.50 ≦ C _P / C _T ≦ 2.2 is satisfied. By satisfying such a relationship, for example, the color filter 1 to be manufactured is sufficiently exposed in the process of manufacturing the color filter 1 while sufficiently improving the adhesion between the light-shielding portion 13 and the colored portion 12. It is possible to more reliably prevent the thermosetting resin or the like from flowing out from the hardly soluble portion 13 ′ formed in the exposure step in a step after the step, and the color tone of the colored portion 12 to be formed, etc. It is possible to more reliably prevent adverse effects on the product.

  In addition, the thermosetting resin which comprises the composition for light shielding part formation may contain multiple types of resin components. The light shielding part forming composition only needs to contain the same type of thermosetting resin component as the thermosetting resin component constituting the above-described colored part forming material. It may further include a thermosetting resin component having a composition different from that of the thermosetting resin component constituting the forming material. However, the ratio of the thermosetting resin component of the same type as the thermosetting resin component constituting the colored portion forming material in the entire thermosetting resin constituting the light shielding portion forming composition is 50 wt% or more. Preferably, it is 80 wt% or more.

(Shading material)
Since the light shielding part 13 of the color filter 1 has light shielding properties, the light shielding part forming composition usually contains a light shielding material.
As the light shielding material, for example, a black material such as carbon black can be used.
The light-shielding material is a mixture of a plurality of types of components, and can be used as a material that exhibits a dark color (in particular, black) as a whole.

(solvent)
The composition for forming a light shielding part usually contains a solvent that dissolves the photosensitive material and the thermosetting resin in addition to the photosensitive material and the thermosetting resin as described above.
As such a solvent, for example, a compound similar to the solvent constituting the aforementioned colored portion forming material can be used.

(Other ingredients)
The composition for forming a light shielding part may contain components other than those described above. Examples of such components include those described in “Other components” as a constituent material of the coloring portion forming material.

<Image display device>
Next, a preferred embodiment of a liquid crystal display device that is an image display device (electro-optical device) having the color filter 1 will be described.
FIG. 5 is a cross-sectional view showing a preferred embodiment of the liquid crystal display device. As shown in the figure, the liquid crystal display device 60 includes a color filter 1, a substrate (opposite substrate) 66 disposed on the side of the color filter 1 on which the colored portion 12 is provided, a color filter 1 and a substrate 66. And a polarizing plate 67 provided on the surface of the substrate 11 of the color filter 1 opposite to the surface facing the liquid crystal layer 62 (lower side in FIG. 5). And a polarizing plate 68 provided on the surface side opposite to the surface facing the liquid crystal layer 62 of the substrate 66 (upper side in FIG. 5). A common electrode 61 is provided on the surface of the color filter 1 where the coloring portion 12 and the light shielding portion 13 are provided (the surface opposite to the surface of the coloring portion 12 and the light shielding portion 13 facing the substrate 11). On the surface of the substrate (counter substrate) 66 facing the liquid crystal layer 62 and the color filter 1, pixel electrodes 65 are arranged in a matrix at positions corresponding to the colored portions 12 of the color filter 1. Further, an alignment film 64 is provided between the common electrode 61 and the liquid crystal layer 62, and an alignment film 63 is provided between the substrate 66 (pixel electrode 65) and the liquid crystal layer 62.

The substrate 66 is a substrate having optical transparency with respect to visible light, and is, for example, a glass substrate.
The common electrode 61 and the pixel electrode 65 are made of a material having optical transparency to visible light, and are made of, for example, ITO.
Although omitted in the drawing, a plurality of switching elements (for example, TFTs: thin film transistors) are provided so as to correspond to the respective pixel electrodes 65. For each pixel electrode 65 corresponding to each coloring portion 12, by controlling the voltage application state between the common electrode 61, in the region corresponding to each coloring portion 12 (each pixel electrode 65), Light transmittance can be controlled.

In the liquid crystal display device 60, light emitted from a backlight (not shown) enters from the polarizing plate 68 side (upper side in FIG. 5). And the light which permeate | transmitted the liquid crystal layer 62 and entered into each coloring part 12 (12A, 12B, 12C) of the color filter 1 is polarized as light of the color corresponding to each coloring part 12 (12A, 12B, 12C). The light is emitted from the plate 67 (lower side in FIG. 5).
Since the liquid crystal display device 60 includes the color filter 1 as described above, problems such as light leakage can be reliably prevented, and an image with excellent contrast can be displayed.

"Electronics"
An image display device (electro-optical device) 1000 such as a liquid crystal display device having the color filter 1 as described above can be used for display portions of various electronic devices.
FIG. 6 is a perspective view showing a configuration of a mobile (or notebook) personal computer to which the electronic apparatus of the present invention is applied.

In this figure, a personal computer 1100 includes a main body 1104 having a keyboard 1102 and a display unit 1106. The display unit 1106 is supported by the main body 1104 via a hinge structure so as to be rotatable. Yes.
In the personal computer 1100, the display unit 1106 includes an image display device 1000.

FIG. 7 is a perspective view showing a configuration of a mobile phone (including PHS) to which the electronic apparatus of the present invention is applied.
In this figure, a cellular phone 1200 is provided with an image display device 1000 in a display unit, together with a plurality of operation buttons 1202, an earpiece 1204, and a mouthpiece 1206.
FIG. 8 is a perspective view showing the configuration of a digital still camera to which the electronic apparatus of the present invention is applied. In this figure, connection with an external device is also simply shown.
Here, an ordinary camera sensitizes a silver halide photographic film with a light image of a subject, whereas a digital still camera 1300 photoelectrically converts a light image of a subject with an imaging device such as a CCD (Charge Coupled Device). An imaging signal (image signal) is generated.

On the back of the case (body) 1302 in the digital still camera 1300, an image display device 1000 is provided in the display unit, and is configured to display based on an imaging signal from the CCD, and a finder that displays a subject as an electronic image. Function as.
A circuit board 1308 is installed inside the case. The circuit board 1308 is provided with a memory that can store (store) an imaging signal.

A light receiving unit 1304 including an optical lens (imaging optical system), a CCD, and the like is provided on the front side of the case 1302 (on the back side in the illustrated configuration).
When the photographer confirms the subject image displayed on the display unit and presses the shutter button 1306, the CCD image pickup signal at that time is transferred and stored in the memory of the circuit board 1308.

  In the digital still camera 1300, a video signal output terminal 1312 and an input / output terminal 1314 for data communication are provided on the side surface of the case 1302. As shown in the figure, a television monitor 1430 is connected to the video signal output terminal 1312 and a personal computer 1440 is connected to the input / output terminal 1314 for data communication as necessary. Further, the imaging signal stored in the memory of the circuit board 1308 is output to the television monitor 1430 or the personal computer 1440 by a predetermined operation.

The electronic apparatus of the present invention includes, for example, a television (for example, a liquid crystal television), a video camera, a viewfinder type, a monitor in addition to the above-described personal computer (mobile personal computer), mobile phone, and digital still camera. Direct-view video tape recorder, laptop personal computer, car navigation system, pager, electronic notebook (including communication function), electronic dictionary, calculator, electronic game device, word processor, workstation, videophone, security TV monitor , Electronic binoculars, POS terminals, devices equipped with touch panels (for example, cash dispensers of financial institutions, automatic ticket vending machines), medical devices (for example, electronic thermometers, blood pressure monitors, blood glucose meters, electrocardiographic display devices, ultrasonic diagnostic devices, endoscopy) Mirror display device), Group detector, various measuring instruments, gages (e.g., gages for vehicles, aircraft, and ships), a flight simulator, various monitors such, can be applied to the projection type display device such as a projector. In particular, televisions have a remarkable tendency to increase the size of the display unit in recent years. However, in electronic devices having such a large display unit (for example, a display unit having a diagonal length of 80 cm or more), a coloring unit and a light shielding unit have been conventionally used. The occurrence of problems due to low adhesion to the part (for example, light leakage due to cracks or the like generated between the colored part and the light-shielding part) was remarkable, but if the present invention is applied, The occurrence of problems can be reliably prevented. That is, when applied to an electronic device having a large display unit as described above, the effects of the present invention are more remarkably exhibited. Therefore, the present invention is preferably applied to an electronic device having a large display portion as described above.
As mentioned above, although this invention was demonstrated based on suitable embodiment, this invention is not limited to these.

  For example, in the embodiment described above, the color filter has been described as having a red colored portion, a red colored portion, and a red colored portion, but the color of the colored portion that the color filter has is not limited to these. For example, the color filter may include a cyan-colored portion, a magenta-colored portion, and a yellow-colored portion.

In the above-described embodiment, the case where three colored portions are formed using three kinds of colored portion forming materials has been representatively described. However, the types of colored portion forming materials are not limited to three types. For example, you may use 4 or more types of coloring part formation materials.
In the above-described embodiment, the method for manufacturing a color filter has been described as including a liquid repellent treatment step, but the liquid repellent step may be omitted.

Further, in the above-described embodiment, the case where the photosensitive material that is cured by exposure and has reduced solubility in the developer has been described as a representative example. You may use what goes up. In such a case, a color filter can be manufactured in the same manner as described above by using a photomask 5 in which the positional relationship between the light transmission part 51 and the light shielding part 52 is reversed. Further, as the photosensitive material, a material that is not cured by exposure but has reduced solubility in a developing solution may be used.
Moreover, the manufacturing method of this invention has the thermosetting process of pre-curing the thermosetting resin contained in the composition for light-shielding part formation by heating between a image development process and the coloring part formation material provision process. It may be a thing.

In addition, each unit constituting the color filter, the image display device, and the electronic device can be replaced with an arbitrary one that exhibits the same function, or another configuration can be added. For example, in the color filter of the present invention, a protective film that covers the colored portion may be provided on the surface of the colored portion opposite to the surface facing the substrate. Thereby, damage, deterioration, etc. of a coloring part can be prevented more effectively.
In the color filter of the present invention, the light shielding part is composed of a material containing a photosensitive material and a cured product of a thermosetting resin, and the colored part is composed of a material containing a cured product of a thermosetting resin. As long as it is manufactured by any method, it may not be manufactured by the method described above.

Next, specific examples of the present invention will be described.
[1] Synthesis of thermosetting resin (Synthesis Example 1)
In a reaction vessel (flask) equipped with a stirrer, reflux condenser, dropping funnel, nitrogen inlet tube and thermometer, 100 parts by weight of diethylene glycol monobutyl ether acetate as a solvent (solvent) was added and heated to 80 ° C. Subsequently, 2- [O- (1′-methylpropylideneamino) carboxyamino] ethyl methacrylate (= 2- (1-methylpropylideneaminooxycarbonylaminoethyl) methacrylate): 30 parts by weight in the flask. , Stearyl methacrylate: 20 parts by weight, (3,4-epoxycyclohexyl) methyl methacrylate: 50 parts by weight of diethylene glycol monobutyl ether acetate: 30 parts by weight of solution was dropped into the flask over 4 hours using a dropping pump. did. On the other hand, a solution prepared by dissolving 5 parts by weight of azobisdimethylvaleronitrile as a radical initiator (polymerization initiator) in 90 parts by weight of diethylene glycol monobutyl ether acetate was added to the flask for 4 hours using another dropping pump. It was dripped in. After completion of the dropping of the polymerization initiator, the temperature was kept (aged) for 4 hours, and then cooled to room temperature to obtain a thermosetting resin TR1 represented by the above formula (6). The weight average molecular weight Mw of the thermosetting resin TR1 was 15000. Further, the dispersity (weight average molecular weight Mw / number average molecular weight Mn) of the thermosetting resin TR1 was 2.

[2] Preparation of photosensitive material solution (Preparation Example 1)
As raw materials, 2-hydroxyethyl methacrylate: 30 parts by weight, N, N-dimethylaminopropyl methacrylamide methyl chloride salt: 30 parts by weight, N, N-dimethylacrylamide: 40 parts by weight, A copolymer was synthesized by a legal method. Thereafter, the reaction solution was dropped into ethyl acetate and purified by precipitation. After drying, diethylene glycol monobutyl ether acetate was added to the copolymer to obtain a resin solution. Then, the bisazide compound represented by following formula (10) was added to the said resin liquid, and the photosensitive material solution in which the target photosensitive material (solid content) melt | dissolved was obtained.

[3] Preparation of colored part forming material (colored part forming material set for three colors) (Preparation Example A1)
<Preparation of red colored part forming material>
C. I. Solvent Red 24 (magenta dye), C.I. I. Solvent Yellow 114 (yellow dye), diethylene glycol monobutyl ether acetate (solvent), diethylene glycol mononormal butyl ether (solvent), thermosetting resin TR1, leveling agent (Surfinol DF58, manufactured by Nissin Chemical Industry Co., Ltd.) And the antioxidant (TINUVIN 152, Ciba Japan Co., Ltd. product) was mixed, and the red colored part formation material was obtained.

<Preparation of green colored portion forming material>
C. I. Solvent Blue 70 (cyan dye), C.I. I. Solvent Yellow 114 (yellow dye), diethylene glycol monobutyl ether acetate (solvent), diethylene glycol mononormal butyl ether (solvent), thermosetting resin TR1, leveling agent (Surfinol DF58, manufactured by Nissin Chemical Industry Co., Ltd.) And the material for green coloring part formation was obtained by mixing antioxidant (TINUVIN 152, Ciba Japan Co., Ltd. product).

<Preparation of blue colored part forming material>
C. I. Solvent Blue 70 (cyan dye), C.I. I. Solvent red 24 (magenta dye), diethylene glycol monobutyl ether acetate (solvent), diethylene glycol mononormal butyl ether (solvent), and thermosetting resin TR1 were mixed to obtain a blue colored portion forming material.
As a result, a set of three kinds of colored portion forming materials (a red colored portion forming material, a green colored portion forming material, and a blue colored portion forming material) as described above was obtained.
(Preparation Examples A2 to A7)
Except for changing the types and contents of the components used for the preparation of the coloring portion forming material as shown in the table, the coloring portion forming materials for the respective colors (for forming the coloring portion for three colors) in the same manner as in Preparation Example A1 A colored part forming material set comprising materials) was prepared.

[4] Preparation of light shielding part forming composition (Preparation Example B1)
Carbon black, thermosetting resin TR1, the photosensitive material solution, and diethylene glycol monobutyl ether acetate as a diluting solvent were mixed to obtain a composition for forming a light shielding part.

(Preparation Examples B2 to B5)
A composition for forming a light shielding part was prepared in the same manner as in Preparation Example B1, except that the types and contents of the components used for the preparation of the composition for forming a light shielding part were changed as shown in the table.
(Preparation Example B6)
In the preparation of the light shielding part forming composition, the light shielding part forming composition was prepared in the same manner as in Preparation Example B1 except that the type and content of each component were changed as shown in the table without using the thermosetting resin TR1. A product was prepared.

Table 1 shows the types and contents of the constituents of the colored part forming materials constituting the colored part forming material sets of Preparation Examples A1 to A7 and the light shielding part forming compositions of Preparation Examples B1 to B6. Shown together. In Table 1, the thermosetting resin TR1 is referred to as “TR1”, C.I. I. Solvent Blue 70 (cyan dye) was added to A1, C.I. I. Solvent Red 24 (magenta dye) was converted to A2, C.I. I. Solvent yellow 114 (yellow dye) is A3, leveling agent (Surfinol DF58, manufactured by Nissin Chemical Industry Co., Ltd.) is “DF58”, and leveling agent (LHP-90, manufactured by Enomoto Kasei Co., Ltd.) is “L90”. Leveling agent (LHP-95, manufactured by Enomoto Kasei Co., Ltd.) “L95”, Leveling agent (LF-1970, manufactured by Enomoto Kasei Co., Ltd.) “LF”, Leveling agent (Olfin SPC, manufactured by Nissin Chemical Industry Co., Ltd.) ) “SPC”, antioxidant (TINUVIN 152, manufactured by Ciba Japan Co., Ltd.) “T152”, diethylene glycol monobutyl ether acetate “S1”, 1,3-butylene glycol diacetate “S2”, 2- (2 -Methoxy-1-methylethoxy) -1-methylethyl acetate “S3”, bis (2-butoxyethyl) ether "S4", ethyl octanoate "S5",
“S6” for diethylene glycol mononormal butyl ether, “S7” for triethylene glycol mononormal butyl ether, “S8” for ethyl 3-ethoxypropionate,
The photosensitive material (solid content contained in the photosensitive material solution prepared in Preparation Example 1) is indicated by “PR1”, and carbon black is indicated by “CB”. In Table 1, the red colored portion forming material is indicated by “R ink”, the green colored portion forming material is indicated by “G ink”, and the blue colored portion forming material is indicated by “B ink”.

Moreover, the viscosity at 25 ° C. of each colored part forming material constituting the colored part forming material set of each of the above preparation examples measured according to JIS Z8809 using a vibration viscometer is 5 mPa -It was a value within the range of s to 11 mPa · s.
Table 1 shows the storage stability evaluation (long-term stability evaluation) of the colored part forming material and the light shielding part forming composition prepared in Preparation Examples A1 to A7 and Preparation Examples B1 to B6. The results are also shown. The storage stability evaluation (long-term stability evaluation) is carried out by visually observing each colored part forming material and each light shielding part forming composition in a 40 ° C. environment for 30 days, and the following four stages. It was carried out according to the standards.

A: No change in appearance is observed before heating.
B: A slight change in appearance is observed before heating.
C: Appearance change is clearly recognized before heating.
D: A change in appearance is noticeably observed before heating.

[5] Production of color filter (Example 1)
Using the colored part forming material (colored part forming material set) prepared in Preparation Example A1 and the light shielding part forming composition prepared in Preparation Example B1, a color filter was produced as follows.

First, a soda glass substrate (G5 size: 1100 × 1300 mm) having a silica (SiO ₂ ) film that prevents elution of sodium ions on both surfaces was prepared and subjected to a cleaning process (substrate preparation step).
Next, the light shielding part forming composition prepared in Preparation Example B1 was applied to the entire surface of one of the cleaned substrates by a spin coating method to form a coating film (light shielding part forming composition application step). .

Next, i-line (wavelength: 365 nm) was irradiated through a photomask under the condition of irradiation intensity: 350 mJ / cm ² to form a hardly soluble part (exposure process).
Next, a liquid repellent treatment was performed on the surface of the hardly soluble portion to form a liquid repellent portion (liquid repellent treatment step). The liquid repellent treatment was performed by a method of doping fluorine on the surface of the hardly soluble portion by plasma polymerization treatment.
Thereafter, development processing using an alkali developer was performed (development process). The development process was performed by a vibration dipping method. The development processing time was 60 seconds.

  Next, using the droplet discharge device as shown in FIG. 4, each colored portion forming material prepared in Preparation Example A1 was discharged into a cell as a space partitioned by a hardly soluble portion (colored portion formation). Material application step). At this time, the colored portion forming materials constituting the colored portion forming material set were not mixed. In each cell, a coloring part forming material was applied in such an amount that the average thickness of the coloring part to be formed was 2.0 μm.

Then, while performing the following heat processing, while making a hardly soluble part the light-shielding part, the colored part was formed (thermosetting process).
First, heat treatment was performed on a hot plate at 80 ° C. for 20 minutes (first heat treatment).
Further, by performing heat treatment in an oven at 230 ° C. for 60 minutes (second heat treatment), three colored portions corresponding to the color of the used colored portion forming material were formed. Thereafter, washing with N-methyl-2-pyrrolidone and γ-butyrolactone was performed, and a color filter as shown in FIG. 1 was obtained. The light shielding part included in the color filter had a height of 2.0 μm.
Using the method as described above, 3000 color filters were manufactured.

(Examples 2 to 6)
Except for changing the type of the light shielding part forming composition used in the light shielding part forming composition application process and the type of the coloring part forming material (colored part forming material set) used in the colored part forming material application process, In the same manner as in Example 1, 3000 color filters were manufactured.
(Comparative Example 1)
3000 color filters were produced in the same manner as in Example 1 except that the type of the light shielding part forming composition used in the light shielding part forming composition application step was changed.

(Comparative Example 2)
While changing the type of the composition for forming the light-shielding part used in the process for applying the composition for forming the light-shielding part, the type of the material for forming the colored part (material set for forming the colored part) used in the process for applying the material for forming the colored part Then, prior to the first heat treatment, g, h, i mixed lines (wavelengths: 436 nm, 405 nm, 365 nm) are applied to the entire surface of the substrate to which the colored portion forming material is applied, and the irradiation intensity is 1200 mJ / 3000 color filters were manufactured in the same manner as in Example 1 except that the light irradiation treatment was performed under the condition of cm ² .

[6] Evaluation of color filter The following evaluation was performed using each color filter obtained as described above.
[6.1] Flatness of colored portion Among the color filters manufactured in each of the examples and comparative examples, a color filter manufactured for the 3000th sheet was prepared.
For these color filters, the difference ΔD between the maximum height and the minimum height of the colored portion is determined for the colored portion of each color using a stylus roughness meter (P-15, manufactured by Tencor). Evaluation was performed according to the criteria of

A: Average ΔD value is less than 0.22 μm.
B: The average ΔD value is 0.22 μm or more and less than 0.34 μm.
C: The average ΔD value is 0.34 μm or more and less than 0.49 μm.
D: The average ΔD value is 0.49 μm or more and less than 0.55 μm.
E: The average ΔD value is 0.55 μm or more.

[6.2] Evaluation of contrast ratio As shown in FIG. 5 under the same conditions, using the color filter manufactured for the 3000th sheet among the color filters manufactured in each of the examples and the comparative examples. A liquid crystal display device was manufactured.
When these liquid crystal display devices are used, red monochromatic display, green monochromatic display, and blue monochromatic display are performed, and monochromatic display is not performed using a photometer (manufactured by PHOTO RESEARCH, PR-800). A comparative contrast ratio (CR) was determined and evaluated as follows.

In the case of a red single color display, evaluation was performed according to the following five-stage criteria.
A: CR is 2900 or more.
B: CR is 2400 or more and less than 2900.
C: CR is 2000 or more and less than 2400.
D: CR is 1700 or more and less than 2000.
E: CR is less than 1700.

In the case of green single color display, evaluation was performed according to the following five-stage criteria.
A: CR is 3800 or more.
B: CR is 3500 or more and less than 3800.
C: CR is 3000 or more and less than 3500.
D: CR is 2800 or more and less than 3200.
E: CR is less than 2800.

In the case of blue single color display, evaluation was performed according to the following five-step criteria.
A: CR is 3100 or more.
B: CR is 2700 or more and less than 3100.
C: CR is 2400 or more and less than 2700.
D: CR is 2200 or more and less than 2400.
E: CR is less than 2200.

[6.3] Color Unevenness, Density Unevenness About the liquid crystal display devices of the above Examples and Comparative Examples manufactured in [6.2], in the dark room, red single color display, green single color display, blue single color display Then, visual observation was performed in a state where white single color display was performed, and the occurrence of color unevenness and density unevenness at each part was evaluated according to the following five-stage criteria.

A: Color unevenness and density unevenness are not recognized at all.
B: Color unevenness and density unevenness are hardly recognized.
C: Color unevenness and density unevenness are slightly recognized.
D: Color unevenness and density unevenness are clearly recognized.
E: Color unevenness and density unevenness are noticeable.

[6.4] Heat Cycle Test As shown in FIG. 5 under the same conditions, using the color filters manufactured in the 2901th to 2910th sheets among the color filters manufactured in the respective Examples and Comparative Examples. A liquid crystal display device was manufactured.
Using these liquid crystal display devices, light leakage (white spots, bright spots) occurs when visual observation is performed in a dark room with red single color display, green single color display, and blue single color display. Confirmed that there is no.

Next, the color filter was removed from the liquid crystal display device.
Each removed color filter is allowed to stand in an environment of 20 ° C for 1 hour, then in an environment of 50 ° C for 2 hours, then in an environment of 20 ° C for 1 hour, and then in an environment of -20 ° C for 2 hours. I put it. Thereafter, the environmental temperature was returned again to 20 ° C., which was set as one cycle (6 hours), and this cycle was repeated 80 times in total (total 480 hours).

Then, using these color filters, a liquid crystal display device as shown in FIG. 5 was assembled again.
Using these liquid crystal display devices, visual observation is performed in a dark room with red single color display, green single color display, and blue single color display, and the occurrence of light leakage (white spots, bright spots) is observed. The evaluation was made according to the following 6-step criteria.

A: There is no color filter in which light leakage (white spots, bright spots) occurs.
B: Light leakage (white spots, bright spots) is observed in one or two color filters.
C: Light leakage (white spots, bright spots) is observed in 3 to 4 color filters.
D: Light leakage (white spots, bright spots) is observed in 5 to 7 color filters.
E: Light leakage (white spots, bright spots) is observed in 8 to 9 color filters.
F: Light leakage (white spots, bright spots) is observed in 10 color filters.

  These results are shown in Table 2. In Table 2, in the column showing the type of the colored part forming material set and the light shielding part forming composition used for the production of the color filter, each colored part forming material set and each light shielding part forming composition The number of the preparation example is shown. In addition, regarding the color filters according to the examples and the comparative examples, the evaluation for the red colored portion / red single color display is evaluated in the “R” column, and the evaluation for the green colored portion / green single color display is “G”. In the column, the evaluation for the blue colored portion / blue single color display is shown in the “B” column.

As is apparent from Table 2, excellent results were obtained with the present invention, whereas satisfactory results were not obtained with the comparative example.
Further, when a commercially available liquid crystal television was disassembled and the liquid crystal display device part was replaced with one manufactured as described above, and the same evaluation as described above was performed, the same result as above was obtained.

  DESCRIPTION OF SYMBOLS 1 ... Color filter 11 ... Substrate 12 ... Colored part (colored layer) 12A ... Red colored part (first colored part) 12B ... Green colored part (second colored part) 12C ... Blue colored part (third colored part) 13 '... Slightly soluble part (solubility changing part) 131' ... Liquid repellent part 13 ... Light shielding part 14 ... Cell 2 ... Colored part forming material 3 ... Coating film (light shielding part forming composition film) 5 ... Photomask DESCRIPTION OF SYMBOLS 51 ... Light transmission part 52 ... Light-shielding part 60 ... Liquid crystal display device 61 ... Common electrode 62 ... Liquid crystal layer 63, 64 ... Orientation film 65 ... Pixel electrode 66 ... Substrate (counter substrate) 67, 68 ... Polarizing plate 100 ... Droplet discharge Apparatus 101 ... Tank 102 ... Discharge scanning unit 103 ... Droplet discharge means 104 ... First position control device (moving means) 106 ... Stage 108 ... Second position control device (moving means) 110 ... Tube (liquid feeding tube) DESCRIPTION OF SYMBOLS 112 ... Control means 1000 ... Image display apparatus 1100 ... Personal computer 1102 ... Keyboard 1104 ... Main part 1106 ... Display unit 1200 ... Mobile telephone 1202 ... Operation button 1204 ... Earpiece 1206 ... Mouthpiece 1300 ... Digital still camera 1302 ... Case ( Body) 1304 ... Light receiving unit 1306 ... Shutter button 1308 ... Circuit board 1312 ... Video signal output terminal 1314 ... Input / output terminal for data communication 1430 ... TV monitor 1440 ... Personal computer

Claims (9)

A composition for forming a light shielding part for applying a composition for forming a light shielding part containing a photosensitive material and a thermosetting resin on a substrate having light permeability;
By irradiating the light shielding part forming composition with light in a predetermined pattern, the solubility of the photosensitive material in the developer is changed, and the light shielding part forming composition is made relatively to the developer. An exposure step having a highly soluble portion having high solubility and a hardly soluble portion having relatively low solubility;
A developing step of forming a plurality of cells as spaces partitioned by the hardly soluble portion by removing the easily soluble portion;
In the cell, a colored part forming material application step for providing a colored part forming material containing a dye and a thermosetting resin,
The thermosetting resin contained in the light shielding part forming composition is cured by heating to form a light shielding part, and the thermosetting resin contained in the colored part forming material is cured to form a colored part. A process,
The method for producing a color filter, wherein the light shielding part forming composition and the colored part forming material contain the same kind of thermosetting resin component. The content of the thermosetting resin in the solid content of the light shielding part forming composition is 15.0 wt% or more,
The method for producing a color filter according to claim 1, wherein the content of the thermosetting resin in the solid content of the colored portion forming material is 15.0 wt% or more.   The method for producing a color filter according to claim 1 or 2, wherein the colored portion forming material is applied into the cell by ejection using an inkjet method.   4. The liquid repellent treatment step of performing a liquid repellent treatment on the surface of the hardly soluble portion opposite to the surface facing the substrate prior to the colored portion forming material application step. 5. Manufacturing method of color filter. As the colored portion forming material, a red colored portion forming material that exhibits red, a green colored portion forming material that exhibits green, and a blue colored portion forming material that exhibits blue,
The method for producing a color filter according to any one of claims 1 to 4, wherein the three kinds of coloring portion forming materials are provided in the cells different from each other.   A color filter manufactured using the method according to claim 1. A substrate having optical transparency;
A light shielding portion provided on the substrate and made of a light shielding material;
A color filter having a plurality of colored portions respectively provided in a plurality of spaces partitioned by the light shielding portion,
The light-shielding portion is composed of a material including a photosensitive material and a cured product of a thermosetting resin,
The color filter, wherein the colored portion is made of a material containing a cured product of a thermosetting resin and a dye.   An image display device comprising the color filter according to claim 6.   An electronic apparatus comprising the image display device according to claim 8.

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