JP2011191363A - Method for manufacturing color filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a color filter by which a plurality of kinds of color filters are efficiently manufactured. <P>SOLUTION: The method of manufacturing the color filter is provided with the plurality of the kinds of color parts and includes: a substrate preparing step of preparing a substrate; a first colored layer forming step of forming a layer formed from a material containing a coloring agent and a photosensitive resin before exposing and developing to form a plurality of first colored layers; a second colored layer forming step of forming a second colored layer by applying ink on one part in the plurality of the first colored layers by an ink jet method; and a cutting step for cutting the substrate into several pieces of it. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a color filter.

An image display device such as a liquid crystal display device (LCD) that performs color display generally uses a color filter that includes a coloring portion for coloring transmitted light into a predetermined color.
Conventionally, a color filter has been applied on a substrate with a composition (colored portion forming composition) containing a colorant, a photosensitive resin, a functional monomer, a polymerization initiator, etc., and then irradiated with light through a photomask. Manufactured using a method of forming red, green, and blue colored portions by repeatedly performing a so-called photolithography method that performs irradiation photosensitive processing (exposure processing), development processing, and the like (see, for example, Patent Document 1). .
Usually, a large-sized mother glass (mother substrate) is used for manufacturing a color filter, and a plurality of mother glasses (mother substrates) are formed by cutting the mother glass (mother substrate) on which a colored portion is formed. A sheet of color filters is manufactured.

By the way, there are various types of image display devices including a color filter, and required characteristics (for example, color tone, light transmittance, and the like) differ depending on each model.
In the conventional method, when changing the color filter to be manufactured according to each model of the image display device, the operation of the manufacturing device is stopped and the composition of the colored portion forming composition of each color is changed. For this reason, the overall productivity of the color filter may not be sufficiently high. Further, in order to stably produce a plurality of types of color filters, it has been necessary to secure a sufficient amount of each of the colored portion forming compositions for producing each color filter. In order to reduce the storage amount of the colored part forming composition, it may be possible to prepare the colored part forming composition when changing the color filter to be manufactured. In such a case, the productivity of the color filter as a whole is considered. Is even lower.

  In the conventional method, each color filter manufactured from one mother glass has the same composition and the same thickness as the colored portion of the same color, and the same color is obtained from one mother glass. It was impossible to produce color filters having different compositions and different thicknesses as the colored portions. For this reason, conventionally, it has been difficult to manufacture a plurality of types of color filters applied to different types of liquid crystal display devices from a single mother glass. Therefore, for example, when manufacturing a large color filter, there are many parts of the mother glass that cannot be effectively used for manufacturing the color filter, which is not preferable from the viewpoint of resource saving, production cost reduction, etc. There were problems such as difficulty in adjusting production volume and inventory.

JP-A-1-293304

  The objective of this invention is providing the manufacturing method of the color filter which can manufacture a multiple types of color filter efficiently.

Such an object is achieved by the present invention described below.
The method for producing a color filter of the present invention is a method for producing a color filter provided with a number of colored portions,
A substrate preparation process for preparing a substrate;
A first colored layer is formed by forming a layer composed of a material containing a colorant and a photosensitive resin on the substrate, and then exposing and developing to form a plurality of first colored layers. Process,
A second colored layer forming step of forming a second colored layer by applying an ink containing a colorant on at least a part of the plurality of the first colored layers by an inkjet method;
A cutting step of cutting the substrate into a plurality of pieces.

  Thereby, the manufacturing method of the color filter which can manufacture a multiple types of color filter efficiently can be provided. In addition, by using a common material (material used for forming the first colored layer) used for forming the colored portion in the production of a plurality of types of color filters, a material for forming a colored portion necessary for the production of the plurality of types of color filters is provided. Stock quantity can be reduced. In addition, for a plurality of types of color filters, even if the amount to be manufactured (production ratio) is unknown, a substrate provided with the first colored layer should be prepared as an intermediate product of the color filter. When the amount to be manufactured (production ratio) is determined, the color filter can be manufactured quickly using the intermediate product, so that the overall productivity of the color filter is particularly excellent. It can be. Moreover, the delivery date from the order by a customer can be shortened notably.

In the manufacturing method of the color filter of this invention, it is preferable to use the sheet | seat material comprised with the material containing the said coloring agent and the said photosensitive resin in a said 1st colored layer formation process.
Thereby, the productivity of the color filter can be made particularly excellent. In addition, it is possible to more effectively prevent the occurrence of unintentional thickness variation in the colored portion of the manufactured color filter, and it is possible to improve the display image using the color filter.

The color filter manufacturing method of the present invention further includes a light shielding part forming step of forming a light shielding part, and in the color filter, the light shielding part is present between the adjacent colored parts. It is preferable.
Thereby, the contrast of the image displayed using a color filter can be made particularly excellent.

In the color filter manufacturing method of the present invention, it is further preferable that the light shielding portion is formed thicker than the first colored layer.
Thereby, the second colored layer can be more reliably formed in a region other than the desired portion, and the image quality of the image displayed using the manufactured color filter can be made particularly excellent.

In the color filter manufacturing method of the present invention, it is preferable to cut out a plurality of types of color filters having different sizes in the cutting step.
Thereby, the board | substrate (mother board | substrate) used for manufacture of a color filter can be used further effectively, and the ratio of the useless part which cannot be used for manufacture of a color filter can be reduced.

In the method for producing a color filter of the present invention, the ink used in the second colored layer forming step is, as a resin material, a monomer component m1 represented by the following formula (1) and a carboxyl group or an acid anhydride group. It is preferable that it contains the polymer M containing the monomer component m2 which has these, and the monomer component m3 represented by following formula (3).

  Thereby, the adhesion between the first colored layer and the second colored layer can be made particularly excellent, and the reliability and durability of the produced color filter can be made particularly excellent. . In addition, the discharge stability of the ink used in the second colored layer forming step, the storage stability of the ink, etc. can be made particularly excellent, and a color filter can be produced stably over a long period of time. As a result, the productivity of the color filter can be made particularly excellent. In addition, the uniformity of the characteristics among the individual color filters to be manufactured can be made particularly excellent.

In the method for producing a color filter of the present invention, the ink used in the second colored layer forming step is represented by the monomer component x1 represented by the following formula (11) and the following formula (13) as a resin material. It is preferable that it contains the polymer X containing the monomer component x3 and the monomer component x4 represented by following formula (14).

  Thereby, the adhesion between the first colored layer and the second colored layer can be made particularly excellent, and the reliability and durability of the produced color filter can be made particularly excellent. . Further, it is possible to more reliably prevent the occurrence of color unevenness and the decrease in contrast at each part of the manufactured color filter, and the reliability of the color filter can be made particularly excellent.

これにより、第１の着色層と第２の着色層との密着性を特に優れたものとすることができ、製造されるカラーフィルターの信頼性、耐久性を特に優れたものとすることができる。また、第２の着色層形成工程で用いるインクの吐出安定性等を優れたものとすることができ、カラーフィルターの耐久性、信頼性を特に優れたものとすることができる。 In the method for producing a color filter of the present invention, the ink used in the second colored layer forming step includes, as a resin material, a polymer Y containing a monomer component y1 represented by the following formula (15). It is preferable.

Thereby, the adhesion between the first colored layer and the second colored layer can be made particularly excellent, and the reliability and durability of the produced color filter can be made particularly excellent. . Further, the ejection stability of the ink used in the second colored layer forming step can be made excellent, and the durability and reliability of the color filter can be made particularly excellent.

It is sectional drawing which shows suitable embodiment of the manufacturing method of the color filter of this invention. It is sectional drawing which shows suitable embodiment of the manufacturing method of the color filter of this invention. 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.
First, a preferred embodiment of the method for producing a color filter of the present invention will be described.
《Color filter manufacturing method》
1 and 2 are cross-sectional views showing a preferred embodiment of the method for producing a color filter of the present invention, and FIG. 3 is a perspective view showing a droplet discharge device used for producing the color filter.

  The color filter manufacturing method of this embodiment includes a substrate preparation step (1a) for preparing a substrate (mother substrate) 11 ′, and a sheet made of a material containing a colorant and a photosensitive resin on the substrate 11 ′. A first colored layer forming step (1b to 1g) for forming a first colored layer 121 of a plurality of colors by sticking a material 121 ′, and then exposing and developing, and light shielding for forming a light shielding portion 13 Ink 2 containing a colorant by an inkjet method on part of the first colored layer 121 formed in the part forming step (1h, 1i) and the first colored layer forming step ( 2A, 2B, 2C) to form a second colored layer 122, a second colored layer forming step (1j, 1k), and the substrate 11 ′ is cut into a plurality of types to obtain a plurality of types of color filters 1, 1. Cutting step (1l) to obtain '.

<Board preparation process>
First, a substrate (mother substrate) 11 ′ is prepared (1a). The substrate 11 ′ is a plate-like member having light transmittance, and has a function of holding a first colored layer 121 (121 A, 121 B, 121 C) and a light shielding portion 13 described later.

The substrate 11 ′ is preferably made of a substantially transparent material. Thereby, a clearer image can be formed by the light transmitted through the color filters 1 and 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 filters 1, 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. .
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 an 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. May be.

<First colored layer forming step>
Next, a layer composed of a material containing a colorant and a photosensitive resin is formed on the substrate 11 ′, and then exposed and developed to obtain a large number of first colored layers 121 as red. The first colored layer 121A, the green first colored layer 121B, and the blue first colored layer 121C are formed (1b to 1g).

In particular, in this embodiment, a sheet material 121 ′ (121′A, 121) made of a material containing a colorant and a photosensitive resin is used to form a layer made of a material containing a colorant and a photosensitive resin. 'B, 121'C) is used. More specifically, a process (1b) for sticking the sheet material 121A ′ for forming the first colored layer 121A of red color, a process (1c) for exposing the sheet material 121A ′ in a predetermined pattern, and further developing it. A process (1d) for sticking the sheet material 121B ′ for forming the green first colored layer 121B, a process (1e) for exposing the sheet material 121B ′ in a predetermined pattern, and further developing (1e), blue The process (1f) of sticking the sheet material 121C ′ for forming the first colored layer 121C and the process (1g) of exposing the sheet material 121C ′ with a predetermined pattern and further developing the sheet material 121C ′ are performed. Thus, by forming the first colored layer 121 using the sheet material 121 ′, the productivity of the color filters 1, 1 ′ can be made particularly excellent. In addition, it is possible to more effectively prevent the occurrence of unintentional thickness variations for the colored portions 12 and 12 ′ of the manufactured color filter 1 and 1 ′, and a display image using the color filter 1 and 1 ′. Can be made more excellent.
In this step, the sheet material 121 ′ (121A ′, 121B ′, 121C ′) may be attached to the substrate 11 ′ by any method, but the sheet material 121 ′ (121A ′, 121B provided on the base film) may be used. ', 121C') is preferably transferred onto the substrate 11 '. Thereby, the productivity of the color filters 1, 1 ′ can be made particularly excellent.

  The colorant (first colorant) contained in the sheet material 121 ′ used for forming the first colored layer 121 is a corresponding ink 2 (second color provided on the surface of the first colored layer 121. Although it may have the same composition as the colorant (second colorant) contained in the ink 2) used for forming the colored layer 122, it has a different composition (a plurality of types of pigment components). When used, it is preferable that the composition of these components as a whole is different. Thereby, adjustment of the chromaticity of the coloring part 12 formed can be performed more suitably.

  In particular, the colorant (first colorant) contained in the sheet material 121 ′ used for forming the first colored layer 121 is the corresponding ink 2 (the first color layer provided on the surface of the first colored layer 121. It is preferable that the color is brighter than the colorant (second colorant) contained in the ink 2) used for forming the second colored layer 122. More specifically, when the first colorant is a film having a predetermined thickness D, in the Lab display system, the first colorant is more than the second colorant film to be compared (film having a thickness D). It is preferable that the L value is high. Thereby, adjustment of the color of the coloring part 12 with which the color filter 1 finally obtained can be adjusted more suitably.

  In addition, the first colored layer 121 formed in this step is from the corresponding second colored layer 122 (second colored layer 122 provided on the surface of the first colored layer 121 in the step described later). Also, it is preferable that the brightness is high. More specifically, the first colored layer 121 preferably has a higher L value than the corresponding second colored layer 122 in the Lab display system. Thereby, adjustment of the color of the coloring part 12 with which the color filter 1 finally obtained can be adjusted more suitably.

  The sheet material 121A 'is a C.I. I. Pigment violet 19, C.I. I. Pigment red 255, C.I. I. Pigment red 264, and C.I. I. It is preferable that one or more selected from the group consisting of CI Pigment Red 122 is included. Thereby, the coloring property of the colored portions 12A and 12A 'can be made particularly excellent.

Further, the sheet material 121B ′ has C.I. I. Pigment green 7 and / or C.I. I. Pigment Green 36 is preferably included. Thereby, the coloring property of the colored portions 12B and 12B ′ can be made particularly excellent.
In addition, the sheet material 121C ′ has C.I. I. Pigment blue 80 and / or C.I. I. Pigment Blue 15: 2 is preferably included. Thereby, the coloring property of the colored portions 12C and 12C ′ can be made particularly excellent.

<Light shielding part forming step>
Next, the light shielding part 13 is formed (1h, 1i).
As described above, in the present embodiment, the light shielding part forming step for forming the light shielding part 13 is included, and in the finally obtained color filter 1, 1 ′, light shielding is performed between the adjacent colored parts 12, 12 ′. The part 13 should be present. Thereby, the contrast of the image displayed using the color filters 1 and 1 ′ can be made particularly excellent. In particular, by forming the light-shielding portion 13 before the second colored layer forming step described later, the ink (color filter ink) 2 used in the second colored layer forming step is the target site. It is possible to effectively prevent the leakage to other than the above.

In the present embodiment, the light shielding portion 13 is formed to be thicker than the adjacent first colored layer 121. Thereby, the second colored layer 122 can be more reliably formed in a region other than the desired portion, and the image quality of the image displayed using the manufactured color filter 1 can be made particularly excellent. .
The difference between the thickness of the light shielding portion 13 and the thickness of the first colored layer 121 is preferably 0.1 μm or more and 0.8 μm or less, and more preferably 0.2 μm or more and 0.6 μm or less.

  In the present embodiment, the light shielding part forming step is performed by a photolithography method using a liquid composition. As a result, the productivity of the color filters 1 and 1 ′ can be made particularly excellent, and the adhesion of the light shielding portion 13 to the substrate 11 ′ and the like can be made particularly excellent. The durability of the color filter 1, 1 ′ obtained can be made particularly excellent.

  In this step, first, the radiation-sensitive composition for forming the light-shielding part is applied to almost the entire surface of the substrate 11 ′ on which the first colored layer 121 is provided to form the coating film 3 (1h). . In addition, after giving a radiation sensitive composition on board | substrate 11 ', you may perform a prebaking process as needed. The pre-bake treatment can be performed, for example, under the conditions of heating temperature: 50 ° C. or higher and 150 ° C. or lower, heating time: 30 seconds or longer and 600 seconds or shorter.

Thereafter, radiation exposure is performed through a photomask to perform post-exposure baking (PEB), and further, development using an alkali developer is performed to form the light shielding portion 13 (1i). . PEB can be performed, for example, under conditions of heating temperature: 50 ° C. or more and 150 ° C. or less, heating time: 30 seconds or more and 600 seconds or less, and radiation irradiation intensity: 1 mJ / cm ² or more and 500 mJ / cm ² or less. The development processing can be performed by, for example, a liquid piling method, a dipping method, a vibration dipping method, or the like, and the development processing time can be, for example, 10 seconds to 300 seconds. Further, after the development process, a post-bake process may be performed as necessary. The post-bake treatment can be performed, for example, under the conditions of heating temperature: 150 ° C. or higher and 280 ° C. or lower and heating time: 3 minutes or longer and 120 minutes or shorter.

  Moreover, you may perform a liquid-repellent process with respect to the coating film 3 before image development processing. For example, before the development treatment, a fluororesin may be applied to the coating film 3 by a stamp method or the like, and fluorine is doped on the surface of the coating film 3 (radiation sensitive composition) by plasma polymerization treatment. Also good. By performing such treatment, only the bank surface (upper surface in the drawing, the portion excluding the inner wall surface) is made liquid repellent, and the ink (color filter ink) 2 used in the second colored layer forming step later is obtained. It can prevent more effectively that it rides on the surface of the bank surface, and contributes to the flattening of the surface of the colored portion 12 (second colored layer 122). Further, a fluororesin having a light specific gravity may be added to the radiation-sensitive composition so as to be oriented only on the surface.

<Second colored layer forming step>
Next, ink 2 (2A, 2B, 2C) containing a colorant is formed on a part of the first colored layers 121 formed in the first colored layer forming step by an inkjet method. To form the second colored layer 122 (1j, 1k). The ink 2 used in this step will be described in detail later, and is composed of a colorant, a liquid medium in which the colorant is dissolved and / or dispersed, and a material including a resin material.
Thus, in the present invention, in addition to the step of forming a large number of first colored layers by exposure and development, an ink jet method is used on at least a part of the large number of first colored layers. And a step of forming a second colored layer by applying ink.

  Thereby, multiple types of color filters having different characteristics (for example, color tone, light transmittance, etc.) can be efficiently manufactured. In addition, by using a common material (material used for forming the first colored layer) used for forming the colored portion in the production of the plurality of types of color filters, the material for forming the colored portion required for the production of the plurality of types of color filters Stock quantity can be reduced. In addition, for a plurality of types of color filters, even if the amount to be manufactured (production ratio) is unknown, a substrate provided with the first colored layer should be prepared as an intermediate product of the color filter. When the amount to be manufactured (production ratio) is determined, the color filter can be manufactured quickly using the intermediate product, so that the overall productivity of the color filter is particularly excellent. It can be. Moreover, the delivery date from the order by a customer can be shortened notably. In addition, since a plurality of types of color filters can be suitably manufactured from a single substrate (mother substrate), for example, together with a large color filter, a small color having different characteristics from the large color filter. A filter can be manufactured. As a result, the portion of the mother substrate that cannot be effectively used for the production of the color filter can be reduced, which is preferable from the viewpoints of resource saving, production cost reduction, and the like.

In this step, first, the color filter ink 2 (2A, 2B, 2C) is applied onto a part of the large number of first colored layers 121 by an inkjet method (1j).
The color filter ink 2 is discharged by using a droplet discharge device as shown in FIG.
As shown in FIG. 3, the droplet discharge device 100 used in this step is supplied with the color filter ink 2 from the tank 101 that holds the color filter ink 2, the tube 110, and the tube 110. A discharge scanning unit 102. 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 a substrate 11 ′ (hereinafter also simply referred to as “substrate 11 ′”) provided with the first colored layer 121 and the light shielding portion 13, and a second position control that controls the position of the stage 106. An apparatus 108 (moving means) and a control means 112 are provided. The tank 101 and the plurality of droplet discharge heads in the droplet discharge means 103 are connected by a tube 110, and the color filter ink 2 is supplied from the tank 101 to each of the plurality of droplet discharge heads by compressed air. The

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. The stage 106 is configured so that the substrate 11 ′ to which the color filter ink 2 is to be applied can be fixed or held 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 relative to each other. To go to).
The control unit 112 is configured to receive ejection data representing a relative position at which the color filter ink 2 is to be ejected from an external information processing apparatus.

Using the droplet discharge device 100 as described above, the color filter ink 2 (2A, 2B, 2C) is applied onto the corresponding first colored layer 121 (121A, 121B, 121C). By using the apparatus as described above, the color filter ink 2 (2A, 2B, 2C) is efficiently and selectively applied to the target first colored layer 121 (121A, 121B, 121C). be able to. In the illustrated configuration, the droplet discharge device 100 has only one tank 101, a tube 110, and the like for holding the color filter ink 2, but these members should be formed in this step. The number of the second colored layers 122 may be the same. In manufacturing the color filter 1, a plurality of droplet discharge devices 100 corresponding to a plurality of color filter inks 2 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.

Next, the liquid medium is removed from the color filter ink 2 applied onto a part of the first colored layers 121, and the curable resin is cured (curing treatment) to thereby form a solid second colored layer. 122 (122A, 122B, 122C).
Removal of the liquid medium and curing of the curable resin are usually performed by heating. Thereby, the adhesiveness with respect to the 1st colored layer 121 and the light-shielding part 13 of the 2nd colored layer 122 formed can be made especially excellent. In addition, it is possible to reliably prevent the liquid medium of the color filter ink 2 from remaining in the formed second colored layer 122. As a result, the durability and reliability of the finally obtained color filter 1 can be made particularly excellent. In addition, the productivity of the color filters 1 and 1 ′ is improved.

The heating temperature in this step (the temperature of the heated substrate 11 ′) 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 curing reaction of the resin material is allowed to proceed efficiently while preventing unintentional deterioration / decomposition of the constituent materials of the colored portions 12 and 12 ′, and a liquid medium is suitably applied from the color filter ink 2. Can be removed.
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.

In this step, a plurality of heat treatments with different temperatures may be performed. Specifically, in this step, a first heat treatment for heating the substrate 11 ′ at a relatively low temperature, and a second heat treatment for heating the substrate 11 ′ at a temperature higher than the first heat treatment, May be applied.
As a result, unintentional deterioration and decomposition of the constituent materials of the colored portions 12 and 12 ′ are prevented, the productivity of the color filters 1 and 1 ′ is improved, and a liquid medium is added to the second colored layer 122. It can prevent effectively remaining.

In this step, a first heat treatment for heating the substrate 11 ′ at a relatively low temperature and a second heat treatment for heating the substrate 11 ′ at a temperature higher than the first heat treatment are performed. Thus, the flatness of the surface of the second colored layer 122 can be made higher.
In such a case, by heating the substrate 11 ′ at a relatively low temperature in the first heat treatment, the liquid medium is gently removed while preventing the convection of the color filter ink 2, and the color filter ink. In a state where the surface of 2 is flat, the fluidity can be lost or reduced. Moreover, the unintentional curing reaction of the resin material can be prevented by heating at a relatively low temperature.
In the second heat treatment, the liquid medium that could not be removed by the first heat treatment can be completely removed. In this step, when the color filter ink 2 is cured by reacting the resin material, the color filter ink 2 fixed in a flat state in the first heat treatment is efficiently cured in the shape. Can be made.

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. It is preferable that it is 100 degreeC or more and it is more preferable that it is 40 degreeC or more and 80 degrees C or less. Accordingly, the liquid medium can be suitably removed from the color filter ink 2 while reliably preventing convection of the color filter ink 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 150 ° C. or higher and 250 ° C. or lower. More preferred. Thereby, the liquid medium which could not be removed by the first heat treatment can be completely removed. In this step, when the color filter ink 2 is cured by reacting a resin material (curable resin material), the color filter ink 2 fixed in a flat state in the first heat treatment is used. It can be efficiently cured in that shape.
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 color filter ink 2 was provided, for example in a pressure-reduced environment.
By placing the substrate 11 ′ to which the color filter ink 2 is applied in a reduced pressure environment (depressurization treatment), the liquid medium can be removed more efficiently, and the shape of the colored portion 12 is surely preferable. Even if the heating temperature is relatively low, the liquid medium can be reliably removed, and adverse effects on the substrate 11 ′, the colored portions 12, 12 ′, etc. The effect that generation | occurrence | production is prevented more reliably is acquired. Moreover, the colored part 12 can be formed more efficiently by using the heat treatment and the decompression treatment in combination.

  Thereafter, cleaning with a cleaning liquid such as N-methyl-2-pyrrolidone or γ-butyrolactone and chemicals is performed. Thereby, even when the solid content of the ink used in this step adheres to the region where the second colored layer 122 should not be formed, the solid content can be easily and reliably removed and obtained. It is possible to reliably prevent an adverse effect on the display image of the color filter.

<Cutting process>
Next, the substrate 11 ′ is cut into a plurality of substrates 11 (1l). As a result, a plurality of types of color filters 1, 1 ′ are obtained. The color filter 1 includes a colored portion 12 including a first colored layer 121 and a second colored layer 122, and the color filter 1 ′ includes a colored portion 12 ′ including a first colored layer 121. It is. More specifically, the color filter 1 includes, as colored portions, a colored portion 12A composed of the first colored layer 121A and the second colored layer 122A, and a colored portion composed of the first colored layer 121B and the second colored layer 122B. Part 12B and a colored part 12C composed of a first colored layer 121C and a second colored layer 122C, and the color filter 1 'is a colored part 12A composed of the first colored layer 121A as a colored part. ', A colored portion 12B' made of the first colored layer 121B, and a colored portion 12C 'made of the first colored layer 121C.
In this step, color filters having the same size may be cut out, but it is preferable to cut out a plurality of types of color filters having different sizes. As a result, the substrate (mother substrate) 11 ′ used for manufacturing the color filter can be further effectively used, and the proportion of useless portions that cannot be used for manufacturing the color filter can be reduced.

  As described above, in the manufacturing method of the present invention, in addition to the step of forming a large number of first colored layers by exposure and development, on the at least a part of the large number of first colored layers. In addition, by providing an ink-jet method and forming a second colored layer, a plurality of types of color filters having different characteristics (for example, color tone, light transmittance, etc.) can be efficiently produced. can do. In addition, by using a common material (material used for forming the first colored layer) used for forming the colored portion in the production of a plurality of types of color filters, a material for forming a colored portion necessary for the production of the plurality of types of color filters is provided. Stock quantity can be reduced. In addition, for a plurality of types of color filters, even if the amount to be manufactured (production ratio) is unknown, a substrate provided with the first colored layer should be prepared as an intermediate product of the color filter. When the amount to be manufactured (production ratio) is determined, the color filter can be manufactured quickly using the intermediate product, so that the overall productivity of the color filter is particularly excellent. It can be. Moreover, the delivery date from the order by a customer can be shortened notably. In addition, since a plurality of types of color filters can be suitably manufactured from a single substrate (mother substrate), for example, together with a large color filter, a small color having different characteristics from the large color filter. A filter can be manufactured. As a result, the portion of the mother substrate that cannot be effectively used for the production of the color filter can be reduced, which is preferable from the viewpoints of resource saving, production cost reduction, and the like. On the other hand, when the method without the second colored layer forming step is used, the above effects cannot be obtained. In addition, it may be possible to form a colored portion only by an ink jet method without using exposure and development processing, but in such a method, the productivity of the color filter is significantly inferior to the present invention. It becomes.

<About color filter ink>
Next, the ink (color filter ink) 2 used in the second colored layer forming step will be described in detail.
The color filter ink 2 includes a colorant, a liquid medium having a function of dissolving and / or dispersing the colorant, a resin material, and the like.

[Colorant]
As the colorant, for example, various pigments and various dyes can be used.
Ink 2A contains C.I. I. Pigment red 177 and its derivatives, and / or C.I. I. It is preferable to include CI Pigment Red 254 and its derivatives. Thereby, the coloring property of the colored portion 12A can be made particularly excellent.
C. I. Pigment Red 177 derivatives, C.I. I. In the case of containing a compound (derivative) represented by the following formula (30) or the following formula (31) as a pigment red 254 derivative, the effects as described above are more remarkably exhibited.

  In addition to the colorant as described above, the ink 2A includes, for example, Pigment Yellow 1, 3, 12, 13, 14, 15, 16, 17, 20, 24, 31, 34, 35, 35: 1, 37. 37: 1, 42, 43, 53, 55, 60, 61, 65, 71, 73, 74, 81, 83, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109 , 110, 113, 114, 116, 117, 119, 120, 126, 127, 128, 129, 138, 139, 150, 151, 152, 153, 154, 155, 156, 157, 166, 168, 175, 180 , 184, 185 and the like. Thereby, the color tone of 12 A of coloring parts can be adjusted more suitably. Among these, pigment yellow 138, 139, 150, 184, and 185 are preferable, and pigment yellow 150 is more preferable. Thereby, the effect mentioned above is exhibited more notably.

Ink 2B contains C.I. as a colorant. I. Pigment green 36 and / or C.I. I. Pigment Green 58 is preferable, and C.I. I. More preferably, CI Pigment Green 58 is included. Thereby, the coloring property of the colored part 12B can be made particularly excellent.
Ink 2B is C.I. I. When the pigment green 58 is included, it is preferable to further include a sulfonated pigment derivative as a sub-pigment. Thereby, the coloring property of the colored part 12B can be further improved.
Ink 2B is C.I. I. When the pigment green 58 and the sulfonated pigment derivative are included, the sulfonated pigment derivative preferably contains a compound (derivative) represented by the following formula (32). Thereby, the effects as described above are more remarkably exhibited.

  Ink 2B is C.I. I. When the pigment green 58 and the pigment derivative (sulfonated pigment derivative) as described above are included, the content of the pigment derivative (sulfonated pigment derivative) is not particularly limited. I. Pigment Green 58 (main pigment): 10 parts by weight or more and 80 parts by weight or less is preferable with respect to 100 parts by weight, and more preferably 30 parts by weight or more and 70 parts by weight or less. Thereby, the contrast and brightness of the display image of the produced color filter 1 can be made particularly excellent.

In addition to the colorant as described above, the ink 2B includes, for example, Pigment Yellow 1, 3, 12, 13, 14, 15, 16, 17, 20, 24, 31, 34, 35, 35: 1, 37. 37: 1, 42, 43, 53, 55, 60, 61, 65, 71, 73, 74, 81, 83, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109 110, 113, 114, 116, 117, 119, 120, 126, 127, 128, 129, 138, 139, 150, 151, 152, 153, 154, 155, 156, 157, 166, 168, 175, 180 , 184, 185 and the like. Thereby, the color tone of the coloring part 12B can be adjusted more suitably. Among these, pigment yellow 138, 139, 150, 184, and 185 are preferable, and pigment yellow 150 is more preferable. Thereby, the effect mentioned above is exhibited more notably.
Further, the ink 2C has C.I. I. Pigment blue 15: 6 and C.I. I. Pigment violet 23 is preferably included. Thereby, the coloring property of the colored portion 12C can be made particularly excellent.

  The content of the colorant in the color filter ink 2 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 content of the colorant is within the above range, the amount of the color filter ink 2 required for forming the colored portion 12 having a predetermined color density can be reduced, which is advantageous from the viewpoint of resource saving. is there. Moreover, since the amount of volatilization of the liquid medium when forming the colored portion 12 of the color filter can be suppressed, the burden on the environment can be reduced.

[Liquid medium]
The liquid medium (liquid medium) has a function of dissolving and / or dispersing the colorant as described above. That is, the liquid medium functions as a solvent and / or a dispersion medium. In general, most of the liquid medium is removed in the process of manufacturing the color filter 1.

  As the liquid medium, for example, ester compounds, ether compounds, hydroxy ketones, carbonic acid diesters, cyclic amide compounds and the like can be used. Among them, [1] polyhydric alcohols (for example, ethylene glycol, propylene glycol, butylene glycol, Ethers (polyhydric alcohol ethers) as condensates of glycerin, etc., alkyl ethers of polyhydric alcohols or polyhydric alcohol ethers (eg, methyl ether, ethyl ether, butyl ether, hexyl ether, etc.), esters (eg, formate, Acetate, propionate, etc.), [2] ester of polyvalent carboxylic acid (eg, succinic acid, glutaric acid, etc.) (eg, methyl ester), [3] at least one hydroxyl group and at least one carboxyl group in the molecule The Ether compounds (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 content of the liquid medium in the color filter ink 2 (when a plurality of compounds are included as the liquid medium, the total of these contents) is preferably 50 wt% or more and 98 wt% or less, and 60 wt%. % To 95 wt%, more preferably 65 wt% to 93 wt%. When the content of the liquid medium is a value within the above range, the color filter 1 to be manufactured has excellent durability while the discharge property of the color filter ink 2 from the droplet discharge head is particularly excellent. Can be.

[Resin material]
The color filter ink 2 contains a resin material (binder resin) for the purpose of improving the adhesion of the formed second colored layer 122 to the first colored layer 121 and the like.
In this invention, it is preferable to contain the resin material which is explained in full detail below.
[Polymer M]
The polymer M includes a monomer component m1 represented by the following formula (1), a monomer component m2 having a carboxyl group or an acid anhydride group, a monomer component m3 represented by the following formula (3), Is included.

By including such a polymer M, the adhesion between the first colored layer 121 and the second colored layer 122 can be made particularly excellent, and the reliability and durability of the produced color filter 1 can be improved. The property can be made particularly excellent. Further, the ejection stability of the ink 2 and the storage stability of the ink 2 can be made particularly excellent, and the color filter 1 can be manufactured stably over a long period of time. Productivity can be made particularly excellent. In addition, the uniformity of characteristics among the individual color filters 1 to be manufactured can be made particularly excellent. In addition, the second colored layer 122 formed using the color filter ink 2 is particularly excellent in flatness, and can prevent a decrease in contrast ratio, brightness, and the like of the color filter 1 to be manufactured. it can. Further, the durability of the color filter 1 can be improved. In addition, the resin material has a characteristic that allows the curing reaction to proceed efficiently at a temperature higher than the predetermined temperature at a predetermined temperature or lower (hereinafter, also referred to as “curing reaction switching characteristics”). Etc. can be made excellent. In addition, since the polymer M is very excellent in affinity and compatibility with the resin components (polymer X and polymer Y) described later, even if it contains a plurality of types of resin components, the color filter In addition, the resin material can be prevented from unintentionally precipitating in the ink 1, and droplets can be discharged with excellent discharge stability. In the formed second colored layer 122, features of each resin component Can be sufficiently exhibited, and problems such as a decrease in transparency due to unintentional phase separation can be reliably prevented. In addition, the long-term storage stability of the color filter ink 2 (the life of the color filter ink 2) is extremely excellent, and the occurrence of problems such as deterioration in quality due to the mass production of the color filter ink 2 is effective. Since the replacement frequency of the color filter ink 2 can be reduced when the color filter 1 is manufactured, the productivity of the color filter 1 and the reliability of the manufactured color filter 1 can be improved. it can.
In addition, the polymer M may consist essentially of a single compound, or may be a mixture of a plurality of types of compounds.

(Monomer component m1)
The polymer M contains a monomer component m1 represented by the above formula (1), that is, a compound having a blocked isocyanate group (hereinafter also referred to as “block isocyanate group”) as a monomer component. It will be. The polymer M constituting the color filter ink may include a plurality of monomer components m1 represented by the general formula (1) in the molecule.

  By containing such a monomer component m1 as a monomer component in the polymer M, an unintentional reaction (polymerization reaction) of the resin material during storage of the color filter ink 2 or droplet ejection. In the curing treatment performed in a heating environment, the curing reaction (polymerization reaction) of the resin material can be suitably progressed while reliably preventing the above. That is, the switching characteristic of the curing reaction for the resin material can be made excellent. This is considered to be due to the following reasons. That is, the blocked isocyanate group contained in the monomer component m1 in the polymer M is deblocked by a relatively high temperature during the curing treatment to generate an active isocyanate group, and the isocyanate group and the carboxyl group or acid anhydride are generated. When the group contributes to curing and can improve the adhesion, heat resistance, chemical resistance, etc. with the first colored layer 121, etc., when relatively low energy is given, Deblocking does not proceed, and the progress of the curing reaction is prevented and suppressed.

In the monomer component m1 represented by the formula (1), R ¹ represents a hydrogen atom or a methyl group, and R ² represents a divalent aliphatic saturated hydrocarbon group having 1 to 8 carbon atoms. R ³ represents a residue of an isocyanate group blocking agent R ³ H.
Examples of the divalent saturated aliphatic hydrocarbon group having 1 to 8 carbon atoms in R ² include a linear or branched divalent saturated aliphatic hydrocarbon group (alkylene group). A divalent saturated aliphatic hydrocarbon group having 2 to 4 carbon atoms such as ethylene, trimethylene and propylene groups is preferred.

Examples of the isocyanate group blocking agent R ³ H include oxime blocking agents such as formaldoxime, acetoaldoxime, acetoxime, methyl ethyl ketoxime, methyl isobutyl ketoxime, diethyl ketoxime, cyclohexanone oxime, diacetyl monooxime, and benzophenone oxime. A pyrazole block agent such as 3,5-dimethylpyrazole; an alcohol block agent such as methanol and ethanol; a phenol block agent such as phenol and cresol; a mercaptan block agent such as butyl mercaptan; acetanilide, ε-caprolactam, γ -Acid amide blocking agents such as butyrolactam; active methylene blocking agents such as dimethyl malonate and methyl acetoacetate; imides such as succinimide and maleic imide Lock agent; urea blocking agents; N- phenylcarbamate type blocking agents of phenyl carbamate, and the like; diphenylamine, amine blocking agents such as aniline, ethylene imine, etc. imine blocking agents such as polyethyleneimine.
As an isocyanate group blocking agent, an oxime blocking agent and a pyrazole blocking agent are preferable, and those represented by the following formula (5) are more preferable.

Examples of the alkyl group having 1 to 8 carbon atoms in R ⁶ and R ⁷ in the formula (5) include linear or branched alkyl groups, and the number of carbon atoms such as methyl, ethyl, and propyl groups. 1 or more and 4 or less linear or branched alkyl group is preferable. Examples of the ring in which R ⁶ and R ⁷ are bonded to each other together with the adjacent carbon atom include a cycloalkane having about 3 to 12 members (preferably 5 or 6 members) such as a cyclobutane ring, a cyclopentane ring, and a cyclohexane ring. A ring etc. are mentioned.

  Specific examples of the monomer component m1 represented by the formula (1) include 2- [O- (1'-methylpropylideneamino) carboxyamino] ethyl methacrylate (= 2- (1-methylpropylideneamino). (Oxycarbonylaminoethyl) methacrylate) (represented by the following formula (6)), 2- (3,5-dimethylpyrazol-1-yl) carbonylaminoethyl methacrylate (represented by the following formula (7)) ) And the like.

  The content of the monomer component m1 in the polymer M (value obtained by conversion in terms of the weight of the monomer used for polymer synthesis) is 1 wt% or more and 99 wt% or less (for example, 10 wt% or more and 95 wt% or less). It is preferably 20 wt% or more and 90 wt% or less, more preferably 25 wt% or more and 88 wt% or less. When the content of the monomer component m1 in the polymer M is a value within the above range, the above-described effects can be obtained without inhibiting the functions of the monomer components m2, m3 and the like described later in detail. It can be remarkably expressed. On the other hand, when the content of the monomer component m1 in the polymer M is less than the lower limit, the effect of including the monomer component m1 may not be sufficiently exhibited. On the other hand, if the content of the monomer component m1 in the polymer M exceeds the upper limit, the content of the monomer components m2, m3, etc. may be relatively decreased, and these functions may not be sufficiently exhibited. There is sex. In addition, when the polymer M contains a plurality of types of monomer components m1, it is preferable that the sum of the contents of the plurality of types of monomer components m1 satisfies the above-described conditions. Further, when the polymer M is a mixture of a plurality of types of compounds, the weighted average value (weighted average value based on the weight ratio) for these compounds is used as the content value of the monomer component m1. can do. Moreover, when the polymer M is a mixture of a plurality of types of compounds, it is preferable that all of these compounds contain the monomer component m1 at the content described above.

(Monomer component m2)
The polymer M contains a monomer component m2 having a carboxyl group or an acid anhydride group as a monomer component. The polymer M constituting the color filter ink may include a plurality of types of monomer components m2 in the molecule.
By including such a monomer component m2 as a monomer component in the polymer M, wetting and spreading of the color filter ink 2 onto the first colored layer 121 can be improved. In addition, it is possible to suitably form the first colored layer 122 that is reliably prevented from being mixed with bubbles and that has excellent adhesion to the first colored layer 121. In addition, by including the monomer component m2 as a monomer component, the long-term storage stability of the color filter ink 2 can be made particularly excellent.

  Examples of the monomer component m2 include unsaturated carboxylic acids or acid anhydrides thereof. Specific examples of the monomer component m2 include α, β-unsaturated carboxylic acids such as acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, and acid anhydrides thereof (maleic anhydride, itaconic anhydride). Acid) and the like, and among them, acrylic acid and methacrylic acid (represented by the following formula (2)) are particularly preferable.

  The content of the monomer component m2 in the polymer M (value obtained by conversion based on the weight of the monomer used for polymer synthesis) is 0.5 wt% or more and 98 wt% or less (for example, 2.5 wt% or more). 70 wt% or less), preferably 3 wt% or more and 50 wt% or less, more preferably 5 wt% or more and 40 wt% or less. When the content of the monomer component m2 in the polymer M is a value within the above range, the above-described monomer component m1 and the monomer component m3 described in detail later are not impaired, and the above-described functions are not impaired. The effect as described above can be expressed more remarkably. On the other hand, when the content of the monomer component m2 in the polymer M is less than the lower limit, the effect of including the monomer component m2 may not be sufficiently exhibited. On the other hand, when the content of the monomer component m2 in the polymer M exceeds the upper limit, the content of the monomer components m1, m3, etc. may be relatively decreased, and these functions may not be sufficiently exhibited. There is sex. In addition, when the polymer M contains a plurality of types of monomer components m2, it is preferable that the sum of the contents of the plurality of types of monomer components m2 satisfies the above-described conditions. Further, when the polymer M is a mixture of plural kinds of compounds, the weighted average value (weighted average value based on the weight ratio) of these compounds is adopted as the content value of the monomer component m2. can do. Moreover, when the polymer M is a mixture of a plurality of types of compounds, it is preferable that all of these compounds contain the monomer component m2 with the content as described above.

(Monomer component m3)
The polymer M contains the monomer component m3 ((meth) acrylic acid ester) represented by the above formula (3) as a monomer component. The polymer M constituting the color filter ink 2 may contain a plurality of monomer components m3 represented by the general formula (3) in the molecule.

  By including such a monomer component m3 as a monomer component in the polymer M, the flatness of the second colored layer 122 formed using the color filter ink 2 is made high. Can do. Further, by containing the monomer component m3 as a monomer component in the polymer M, the ejection stability of the color filter ink 2 can be improved. Further, by containing the monomer component m3 as a monomer component in the polymer M, the storage stability (long-term storage stability) of the color filter ink 2 can be improved.

Examples of the hydrocarbon group having 16 to 25 carbon atoms in R ⁵ include alkyl groups such as hexadecyl (cetyl), heptadecyl, octadecyl (stearyl), nonadecyl, icosyl and docosyl (behenyl) groups; 10-cyclohexyldecyl, 12 A group in which an alicyclic hydrocarbon group such as cyclohexyldodecyl, 14-cyclohexyltetradecyl, 16-cyclohexylhexadecyl and the like are bonded to an alkyl group; 10-phenyldecyl, 12-phenyldodecyl, 14-phenyltetradecyl, 16 -Aralkyl groups, such as a phenyl hexadecyl group, etc. are mentioned.

  Examples of the hydrocarbon group-substituted oxy group that the hydrocarbon group having 16 to 25 carbon atoms may have include, for example, alkoxy groups such as methoxy and ethoxy groups (for example, alkoxy groups having 1 to 10 carbon atoms); Aryloxy group such as phenoxy group; alicyclic hydrocarbon group-substituted oxy group such as cyclohexyloxy group and dicyclopentanyloxy group; and 1 to 15 carbon atoms such as aralkyloxy group such as benzyloxy group (preferably, And a hydrocarbon group-substituted oxy group having 1 to 12 carbon atoms.

Specific examples of the monomer component m3 include cetyl (meth) acrylate, stearyl (meth) acrylate, and behenyl (meth) acrylate.
As described above, the number of carbon atoms of the hydrocarbon group (which may have a hydrocarbon group-substituted oxy group) contained in the monomer component m3 constituting the polymer M (hereinafter also referred to as the carbon number of R ⁵ ). Is 16 or more and 25 or less, particularly preferably 16 or more and 22 or less, and more preferably 16 or more and 20 or less. Thereby, the effect mentioned above is exhibited more notably. On the other hand, when the carbon number of R ⁵ is less than the lower limit value or exceeds the upper limit value, the excellent effects as described above cannot be obtained. Thus, the polymer M has one big feature in that it includes a monomer component (monomer component m3) having a group (R ⁵ ) having a predetermined number of carbon atoms.

  The content of the monomer component m3 in the polymer M (value obtained by conversion based on the weight of the monomer used for polymer synthesis) is 0.5 wt% or more and 98 wt% or less (for example, 2.5 wt% or more). 70 wt% or less), preferably 3 wt% or more and 50 wt% or less, more preferably 5 wt% or more and 40 wt% or less. When the content of the monomer component m3 in the polymer M is a value within the above range, the above-described effects are more prominent without inhibiting the functions of the monomer components m1, m2, and the like. Can be expressed. On the other hand, when the content of the monomer component m3 in the polymer M is less than the lower limit, the effect of including the monomer component m3 may not be sufficiently exhibited. On the other hand, if the content of the monomer component m3 in the polymer M exceeds the upper limit, the content of the monomer components m1, m2, etc. may be relatively decreased, and these functions may not be sufficiently exhibited. There is sex. In addition, when the polymer M contains a plurality of types of monomer components m3, it is preferable that the sum of the content ratios of the plurality of types of monomer components m3 satisfies the above conditions. Further, when the polymer M is a mixture of a plurality of types of compounds, the weighted average value (weighted average value based on the weight ratio) for these compounds is adopted as the content value of the monomer component m3. can do. Moreover, when the polymer M is a mixture of a plurality of types of compounds, it is preferable that all of these compounds contain the monomer component m3 at the above-described content.

Polymer ratio of the monomer component m1 in _{M (C m1 [wt%]} ) and the monomer ratio of the components _{m2 (C m2 [wt%]} ) , it is preferable to satisfy the following relationship. That is, C _m1 / C _m2 is preferably 2/98 or more and 98/2 or less, more preferably 20/80 or more and 95/5 or less, and 40/60 or more and 95/5 or less. Further preferred.
Further, the ratio of monomer component m1 in polymer M ( _Cm1 [wt%]) and the ratio of monomer component m3 ( _Cm3 [wt%]) preferably satisfy the following relationship. . That is, C _m1 / C _m3 is preferably 2/98 or more and 98/2 or less, more preferably 20/80 or more and 95/5 or less, and 40/60 or more and 95/5 or less. Further preferred.
Examples of the polymer M include those represented by the following formula (8).

  Moreover, the polymer M may contain components other than the monomer components m1, m2, and m3 described above. Thereby, for example, the effects derived from the chemical structures of other monomer components can be obtained while exhibiting the above-described characteristics. Examples of such components include monomer component m4, monomer component m5, monomer component m6, monomer component m7 and the like as described below.

(Monomer component m4)
The polymer M may contain the monomer component m4 ((meth) acrylic acid ester) represented by the following formula (4) as a monomer component.

By including the monomer component m4 in the polymer M, the solubility of the resin material in the color filter ink 2 is excellent even when the liquid medium constituting the color filter ink 2 is highly hydrophilic. The transparency of the second colored layer 122 formed using the color filter ink 2 can be made excellent.
In the monomer component m4, R ⁹ represents a hydrocarbon group having 1 to 15 carbon atoms which may have a hydrocarbon group-substituted oxy group, and the hydrocarbon group has 1 to 12 carbon atoms. It is preferable that: Examples of the hydrocarbon group represented by R ⁹ include alkyl groups such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, s-butyl, t-butyl, pentyl, hexyl, octyl, 2-ethylhexyl, decyl group; Alicyclic hydrocarbon groups such as cyclohexyl, dicyclopentanyl and isobornyl groups; aryl groups such as phenyl groups; aralkyl groups such as benzyl, 1-phenylethyl and 2-phenylethyl groups; groups in which two or more of these are bonded, etc. Is mentioned.

  Examples of the hydrocarbon group-substituted oxy group that the hydrocarbon group having 1 to 15 carbon atoms may have include, for example, alkoxy groups such as methoxy and ethoxy groups (for example, alkoxy groups having 1 to 10 carbon atoms); Aryloxy group such as phenoxy group; alicyclic hydrocarbon group-substituted oxy group such as cyclohexyloxy group and dicyclopentanyloxy group; and 1 to 15 carbon atoms such as aralkyloxy group such as benzyloxy group (preferably, And a hydrocarbon group-substituted oxy group having 1 to 12 carbon atoms.

  Specific examples of the monomer component m4 include methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, phenyl (meth) acrylate, cyclohexyl (meth) acrylate, di Examples include cyclopentanyl (meth) acrylate, dicyclopentanyloxyethyl (meth) acrylate, isobornyl (meth) acrylate, benzyl (meth) acrylate, phenylethyl (meth) acrylate, and the like.

As described above, the carbon number of the hydrocarbon group (which may have a hydrocarbon group-substituted oxy group) included in the monomer component m4 (hereinafter also referred to as the carbon number of R ⁹ ) is 1 or more and 15 or less. However, it is particularly preferably 1 or more and 8 or less, and more preferably 1 or more and 4 or less. Thereby, the effect mentioned above is exhibited more notably.
Examples of the polymer M including the monomer component m4 as described above include those represented by the following formula (9).

(Monomer component m5)
The polymer M may contain the monomer component m5 which is an aromatic vinyl compound as a monomer component.
When the polymer M contains the monomer component m5, the discharge stability of the color filter ink 2 can be made particularly excellent. The second colored layer 122 formed using the color filter ink 2 is particularly excellent in transparency (a reduction in light transmittance due to the opacity of the resin material is more effectively prevented), and the first Adhesion to the colored layer 121 is particularly excellent, and problems such as cracks are particularly difficult to occur.
Specific examples of the monomer component m5 include styrene, α-methylstyrene, vinyl toluene, vinyl naphthalene, vinyl biphenyl, and the like.

(Monomer component m6)
The polymer M may include a monomer component m6 that is a hydroxyl group-containing compound as a monomer component.
When the polymer M contains the monomer component m6, the storage stability of the color filter ink 2 can be made particularly excellent. In addition, the curing reaction of the resin material at the time of forming the second colored layer 122 can be more suitably advanced.

  Specific examples of the monomer component m6 include 2-hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, 2,3-dihydroxybutyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, and 6-hydroxy. Polyhydric alcohol and acrylic acid such as hexyl (meth) acrylate, hydroxyalkyl (meth) acrylate such as 8-hydroxyoctyl (meth) acrylate, 4-hydroxymethylcyclohexyl (meth) acrylate, polyalkylene glycol mono (meth) acrylate, etc. Or a compound obtained by ring-opening polymerization of ε-caprolactone to a monoesterified product of methacrylic acid, a monoesterified product of the above polyhydric alcohol and acrylic acid or methacrylic acid, ethylene oxide, or propylene oxide. Ring-opening polymerized hydroxyl containing compounds, and the like to.

(Monomer component m7)
The polymer M may contain the monomer component m7 which is a vinyl compound having a 3- to 5-membered cyclic ether group as a monomer component.
The monomer component m7 (a vinyl compound having a 3- to 5-membered cyclic ether group) includes an oxirane ring (epoxy group) -containing polymerizable unsaturated compound, an oxetane ring (oxetanyl group) -containing polymerizable unsaturated compound, and an oxolane ring. (Oxolanyl group) -containing polymerizable unsaturated compounds are included.
When the polymer M contains the monomer component m7, the hardness of the second colored layer 122 formed using the color filter ink 2 and the adhesion to the first colored layer 121 are further improved. You can plan.

Examples of the oxirane ring (epoxy group) -containing polymerizable unsaturated compound include oxiranyl (meth) acrylate, glycidyl (meth) acrylate, 2-methylglycidyl (meth) acrylate, 2-ethylglycidyl (meth) acrylate, and 2-oxy Polymerizable unsaturated compounds containing an oxirane ring (monocyclic) such as ranylethyl (meth) acrylate, 2-glycidyloxyethyl (meth) acrylate, 3-glycidyloxypropyl (meth) acrylate, glycidyloxyphenyl (meth) acrylate, etc. ((Meth) acrylic acid ester derivatives and the like); 3,4-epoxycyclohexyl (meth) acrylate, 3,4-epoxycyclohexylmethyl (meth) acrylate, 2- (3,4-epoxycyclohexyl) ethyl (meth) acrylate, Epoxy group-containing alicyclic rings such as 3,4-epoxycyclohexane rings such as-(3,4-epoxycyclohexylmethyloxy) ethyl (meth) acrylate and 3- (3,4-epoxycyclohexylmethyloxy) propyl (meth) acrylate Polymerizable unsaturated compounds containing the formula carbocycle ((meth) acrylic acid ester derivatives and the like); 5,6-epoxy- such as 5,6-epoxy-2-bicyclo [2.2.1] heptyl (meth) acrylate Polymerizable unsaturated compounds containing a 2-bicyclo [2.2.1] heptane ring (such as (meth) acrylic acid ester derivatives); epoxidized dicyclopentenyl (meth) acrylate [3,4-epoxytricyclo [5. 2.1.0 ^2,6] decan-9-yl (meth) acrylate, 3,4-epoxytricyclo [5.2.1.0 ^2, ] Decan-8-yl (meth) acrylate or mixtures thereof,], epoxidized dicyclopentenyloxyethyl (meth) acrylate [2- (3,4-epoxytricyclo [5.2.1.0 ^2,6 ] Decan-9-yloxy) ethyl (meth) acrylate, 2- (3,4-epoxytricyclo [5.2.1.0 ^2,6 ] decan-8-yloxy) ethyl (meth) acrylate, or these Mixture], 3,4-epoxy tricyclo [5.2.1.0 ^2,6 ] decane ring such as epoxidized dicyclopentenyloxybutyl (meth) acrylate, epoxidized dicyclopentenyloxyhexyl (meth) acrylate, etc. Examples thereof include polymerizable unsaturated compounds (such as (meth) acrylic acid ester derivatives). As another oxirane ring (epoxy group) -containing polymerizable unsaturated compound, a vinyl ether compound containing an epoxy group, an allyl ether compound containing an epoxy group, an aromatic vinyl compound containing an epoxy group, or the like can also be used. Examples of the aromatic vinyl compound containing an epoxy group include styrene derivatives such as 4-vinylbenzylglycidyl ether, 4-vinylbenzyloxirane, 4-vinylphenethyloxirane.

Examples of the oxetane ring (oxetanyl group) -containing polymerizable unsaturated compound include oxetanyl (meth) acrylate, 3-methyl-3-oxetanyl (meth) acrylate, 3-ethyl-3-oxetanyl (meth) acrylate, (3- Methyl-3-oxetanyl) methyl (meth) acrylate, (3-ethyl-3-oxetanyl) methyl (meth) acrylate, 2- (3-methyl-3-oxetanyl) ethyl (meth) acrylate, 2- (3-ethyl -3-Oxetanyl) ethyl (meth) acrylate, 2-[(3-methyl-3-oxetanyl) methyloxy] ethyl (meth) acrylate, 2-[(3-ethyl-3-oxetanyl) methyloxy] ethyl (meta ) Acrylate, 3-[(3-Methyl-3-oxetanyl) methyloxy] propyl Pill (meth) acrylate, 3 - and [(3-ethyl-3-oxetanyl) methyloxy] propyl (meth) acrylate, vinyl ether compounds containing oxetanyl group, allyl ether compounds containing oxetanyl group.
Examples of the oxolane ring (oxolanyl group) -containing polymerizable unsaturated compound include tetrahydrofurfuryl (meth) acrylate, vinyl ether compounds containing an oxolanyl group, and allyl ether compounds containing an oxolanyl group.

  When the polymer M constituting the color filter ink 2 includes the monomer component m7 as described above, a 3- to 5-membered cyclic ether group (oxirane ring (epoxy group), oxetane ring (oxetanyl group), The oxolane ring (oxolanyl group)) acts as a curable group. The 3- to 5-membered cyclic ether group mainly contributes to improvement of chemical resistance (solvent resistance, alkali resistance, etc.).

  When the polymer M contains at least one monomer component selected from the group consisting of the monomer components m4, m5, m6 and m7 in addition to the monomer components m1, m2 and m3, The total content of the monomer components m4, m5, m6 and m7 in the polymer M is preferably 60 wt% or less, more preferably 50 wt% or less, and further preferably 40 wt% or less. preferable. Thereby, the effect by including the monomer components m4, m5, m6, and m7 is exhibited while the effect by including the monomer components m1, m2, and m3 described above is sufficiently exhibited.

The weight average molecular weight of the polymer M is preferably 500 or more and 100,000 or less, more preferably 1000 or more and 40000 or less, and further preferably 2000 or more and 30000 or less. As a result, the contrast ratio and brightness of the color filter 1 produced using the color filter ink 2 can be made particularly excellent, and the durability of the color filter 1 can be made particularly excellent. it can. Further, the storage stability (long-term stability), ejection stability, hardness of the formed second colored layer 122, and the like of the color filter ink 2 can be improved.
Further, the dispersity (weight average molecular weight Mw / number average molecular weight Mn) of the polymer M is preferably 1 or more and 3 or less.

The content _{C M} of the polymer M in the ink 2 color filter is preferably not more than 0.5 wt% or more 12 wt%, and more preferably less than 1.0 wt% 9.0 wt%.
The content of the polymer M in the color filter ink 2 is preferably 0.6 wt% or more and 13.0 wt% or less, and more preferably 0.9 wt% or more and 9.0 wt% or less. Thereby, the effect by including the polymer M can be more effectively exhibited while fully exhibiting the functions of other components.

[Polymer X]
Polymer X includes monomer component x1 represented by the following formula (11), monomer component x3 represented by the following formula (13), monomer component x4 represented by the following formula (14), and Is included. Examples of the polymer X include those represented by the following formula (17).

By including such a polymer X, the adhesion between the first colored layer 121 and the second colored layer 122 can be made particularly excellent, and the reliability and durability of the produced color filter 1 can be improved. The property can be made particularly excellent. In addition, it is possible to more reliably prevent the occurrence of color unevenness and a decrease in contrast at each part of the manufactured color filter 1, and the reliability of the color filter 1 can be made particularly excellent. Further, by including the polymer X, the affinity and compatibility of each polymer component in the color filter ink 2 (particularly, the affinity and compatibility of the polymer X with the polymer M and polymer Y). The color filter ink 2 is made excellent in the discharge stability of the color filter ink 2 while fully exhibiting the features of the polymer X, and is formed using the color filter ink 2. The transparency of the second colored layer 122 can be made high.
In addition, the polymer X may consist essentially of a single compound, or may be a mixture of a plurality of types of compounds. However, when the polymer X is a mixture of a plurality of types of compounds, each compound contains monomer components x1, x3, and x4.

(Monomer component x1)
The polymer X contains the monomer component x1 represented by the formula (11) as a monomer component.
By containing such a monomer component x1 as a monomer component, an unintentional reaction (polymerization reaction) of the resin material during storage of the color filter ink 2 or droplet discharge can be reliably prevented. On the other hand, in the curing treatment performed in a heating environment, the curing reaction (polymerization reaction) of the resin material can be more suitably advanced. That is, by including the monomer component x1, the switching characteristics of the curing reaction for the resin material can be made particularly excellent. Further, by containing the monomer component x1 as the monomer component, for example, the long-term storage stability and ejection stability of the color filter ink 2 can be improved. Moreover, the hardness of the 2nd colored layer 122 formed using the ink 2 for color filters can be made excellent by containing the monomer component x1 as a monomer component.

  The content of the monomer component x1 in the polymer X (a value obtained by conversion based on the weight of the monomer used for polymer synthesis) is preferably 30 wt% or more and 90 wt% or less, and 40 wt% or more. More preferably, it is 80 wt% or less. When the content of the monomer component x1 in the polymer X is a value within the above range, the above-described effects can be achieved without inhibiting the functions of the monomer components x2, x3, and x4 described in detail later. It can be expressed more significantly. On the other hand, if the content of the monomer component x1 in the polymer X is less than the lower limit value, the effect of including the monomer component x1 may not be sufficiently exhibited. On the other hand, when the content of the monomer component x1 in the polymer X exceeds the upper limit, the content of the monomer components x2, x3, and x4 is relatively lowered, and these functions are not sufficiently exhibited. there is a possibility. Further, the reaction rate of the polymer X at a high temperature decreases, and it becomes difficult to produce the color filter 1 with sufficiently excellent productivity. In addition, when the polymer X is a mixture of plural kinds of compounds, the weighted average value (weighted average value based on the weight ratio) of these compounds is adopted as the content value of the monomer component x1. can do. Moreover, when the polymer X is a mixture of a plurality of types of compounds, it is preferable that all of these compounds contain the monomer component x1 at the content as described above.

(Monomer component x2)
The polymer X may contain the monomer component x2 represented by the following formula (12) as a monomer component.

By containing such a monomer component x2 as a monomer component (in particular, together with the monomer component x1 described above and the monomer component x3 described in detail later), the color filter ink 2 Resin material curing reaction (polymerization reaction) during the heating environment while preventing unintentional reaction (polymerization reaction) of the resin material during storage and droplet discharge, etc. is more suitable. Can be advanced. In particular, in the curing treatment under a heating environment, the rising of the polymerization reaction of the resin material can be improved, and the polymerization reaction can be continuously advanced. Further, by including the monomer component x2 as the monomer component, the hardness of the second colored layer 122 formed using the color filter ink 2 can be made particularly excellent.
Examples of the polymer X containing the monomer component x2 as a monomer component include those represented by the following formula (19).

  The content of the monomer component x2 in the polymer X (value obtained by conversion in terms of the weight of the monomer used for polymer synthesis) is preferably 5 wt% or more and 60 wt% or less, preferably 10 wt% or more. More preferably, it is 50 wt% or less. When the content of the monomer component x2 in the polymer X is a value within the above range, without inhibiting the functions of the monomer component x1 and the monomer components x3 and x4 described in detail later, The effects as described above can be expressed more remarkably. On the other hand, when the content of the monomer component x2 in the polymer X is less than the lower limit, the effect of including the monomer component x2 may not be sufficiently exhibited. On the other hand, when the content of the monomer component x2 in the polymer X exceeds the upper limit, the content of the monomer components x1, x3, and x4 is relatively lowered, and these functions are not sufficiently exhibited. there is a possibility. Further, the reactivity of the polymer X at a relatively low temperature increases, and the storage stability of the color filter ink 2 tends to decrease. In addition, when the polymer X is a mixture of a plurality of kinds of compounds, the weighted average value (weighted average value based on the weight ratio) for these compounds is adopted as the content value of the monomer component x2. can do. Moreover, when the polymer X is a mixture of a plurality of types of compounds, it is preferable that all of these compounds contain the monomer component x2 at the above-described content.

(Monomer component x3)
The polymer X contains the monomer component x3 represented by the above formula (13) as a monomer component.
When the polymer X contains the monomer component x3 as a monomer component, the chemical resistance and solvent resistance of the second colored layer 122 formed using the color filter ink 2 are particularly excellent. Can be. Thereby, even if it is a case where post-processing, such as chemical | medical agent application | coating and washing | cleaning, is performed after a hardening process, generation | occurrence | production of the bad influence by these can be prevented reliably.

In addition, the monomer component x3 has a sufficiently low reactivity at a relatively low temperature (for example, 100 ° C. or lower) in the polymer X, similarly to the monomer component x1 described above. In a heating environment such as the heat treatment applied in step 1, it exhibits sufficient reactivity. For this reason, in the curing process performed in a heating environment while reliably preventing unintentional reaction (polymerization reaction) of the resin material during storage of the color filter ink 2 or droplet discharge, the resin material is cured. The reaction (polymerization reaction) can be suitably progressed.
In addition, by including the monomer component x3 as the monomer component, for example, the long-term storage stability and ejection stability of the color filter ink 2 can be made particularly excellent.

  The content of the monomer component x3 in the polymer X (value obtained by conversion in terms of the weight of the monomer used for polymer synthesis) is preferably 2 wt% or more and 20 wt% or less, preferably 3 wt% or more. More preferably, it is 15 wt% or less. When the content of the monomer component x3 in the polymer X is a value within the above range, without inhibiting the functions of the monomer components x1 and x2 described above and the monomer component x4 described in detail later, The effects as described above can be expressed more remarkably. On the other hand, when the content of the monomer component x3 in the polymer X is less than the lower limit, the effect of including the monomer component x3 may not be sufficiently exhibited. On the other hand, when the content of the monomer component x3 in the polymer X exceeds the upper limit, the content of the monomer components x1, x2, and x4 is relatively decreased, and these functions are not sufficiently exhibited. there is a possibility. In addition, when the polymer X is a mixture of a plurality of types of compounds, the weighted average value (weighted average value based on the weight ratio) of these compounds is adopted as the content value of the monomer component x3. can do. Moreover, when the polymer X is a mixture of a plurality of types of compounds, it is preferable that all of these compounds contain the monomer component x3 with the content as described above.

(Monomer component x4)
The polymer X contains the monomer component x4 represented by the formula (14) as a monomer component.
Inclusion of such a monomer component x4 as a monomer component increases the solid content concentration when removing the liquid medium from the color filter ink 2 applied on the first colored layer 121. As a result, the thixotropic property and viscosity of the color filter ink 2 are increased, and it is possible to more reliably prevent the occurrence of unintended irregularities on the surface of the second colored layer 122 to be formed.

Moreover, the monomer component x4 has a hydroxyl group at the terminal. By having such a structure, the reactivity in a heating environment such as a curing process can be further enhanced while the reactivity at a relatively low temperature (for example, 100 ° C. or less) is sufficiently low. As a result, the resin material is cured in a curing process performed in a heated environment while reliably preventing unintentional reaction (polymerization reaction) of the resin material during storage of the color filter ink 2 or droplet discharge. The reaction (polymerization reaction) can proceed more suitably.
In addition, by including the monomer component x4 as the monomer component, for example, the long-term storage stability and ejection stability of the color filter ink 2 can be made particularly excellent.

  The content of the monomer component x4 in the polymer X (value obtained by conversion in terms of the weight of the monomer used for polymer synthesis) is preferably 2 wt% or more and 20 wt% or less, preferably 3 wt% or more. More preferably, it is 15 wt% or less. When the content of the monomer component x4 in the polymer X is a value within the above range, the above-described effects are more remarkable without inhibiting the functions of the monomer components x1, x2, and x3. Can be expressed. On the other hand, when the content of the monomer component x4 in the polymer X is less than the lower limit, the effect due to the inclusion of the monomer component x4 may not be sufficiently exhibited. On the other hand, when the content of the monomer component x4 in the polymer X exceeds the upper limit, the content of the monomer components x1, x2, and x3 is relatively lowered, and these functions are not sufficiently exhibited. there is a possibility. Moreover, the tendency for the hardness of the 2nd colored layer 122 formed using the ink 2 for color filters to fall appears. In addition, when the polymer X is a mixture of a plurality of types of compounds, the weighted average value (weighted average value based on the weight ratio) of these compounds is used as the content value of the monomer component x4. can do. Moreover, when the polymer X is a mixture of a plurality of types of compounds, it is preferable that all of these compounds contain the monomer component x4 with the content as described above.

The polymer X may include a monomer component (other monomer component) other than the monomer components x1, x2, x3, and x4 described above. Thereby, for example, the effects derived from the chemical structures of other monomer components can be obtained while exhibiting the above-described characteristics.
When the polymer X contains other monomer components (monomer components other than the monomer components x1, x2, x3, x4), the content of other monomer components in the polymer X ( When a plurality of other monomer components are included, the sum of these contents) is preferably 15 wt% or less, and more preferably 10 wt% or less.

The weight average molecular weight of the polymer X is preferably 1000 or more and 50000 or less, more preferably 1200 or more and 10,000 or less, and further preferably 1500 or more and 5000 or less. Thereby, the temporal stability (long-term storage stability) of the color filter ink 2 and the ejection stability of the color filter ink 2 can be made particularly excellent, and the productivity of the color filter 1 is sufficiently excellent. Furthermore, the flatness of the second colored layer 122 formed by using the color filter ink 2 can be made more reliable, and color unevenness in an image displayed using the color filter can be achieved. Etc. can be more effectively prevented.
Further, the dispersity (weight average molecular weight Mw / number average molecular weight Mn) of the polymer X is preferably 1 or more and 3 or less.

[Polymer Y]
The polymer Y includes a monomer component y1 represented by the following formula (15). Examples of the polymer Y include those represented by the following formula (18).

By including such a polymer Y, the adhesion between the first colored layer 121 and the second colored layer 122 can be made particularly excellent, and the reliability and durability of the produced color filter 1 can be improved. The property can be made particularly excellent. Further, the discharge stability of the ink 2 can be made excellent, and the durability and reliability of the color filter 1 can be made particularly excellent.
The polymer Y may be substantially composed of a single compound, or may be a mixture of a plurality of types of compounds. However, when the polymer Y is a mixture of a plurality of types of compounds, each compound contains the monomer component y1.

(Monomer component y1)
The polymer Y contains the monomer component y1 represented by the formula (15) as a monomer component.
By including such a monomer component y1 as a monomer component, the adhesion of the second colored layer 122 formed using the color filter ink 2 to the first colored layer 121 is particularly excellent. Can be. As a result, the durability of the color filter 1 can be made particularly excellent.

  The content of the monomer component y1 in the polymer Y (value obtained by conversion in terms of the weight of the monomer used for polymer synthesis) is preferably 30 wt% or more and 90 wt% or less, and 40 wt% or more. More preferably, it is 80 wt% or less. When the content of the monomer component y1 in the polymer Y is a value within the above range, for example, when the polymer Y includes the monomer component y2 described in detail later as the monomer component, the unit The effects as described above can be expressed more significantly without inhibiting the function of the monomer component y2. On the other hand, when the content of the monomer component y1 in the polymer Y is less than the lower limit value, the effect of including the monomer component y1 may not be sufficiently exhibited. On the other hand, when the content of the monomer component y1 in the polymer Y exceeds the upper limit, for example, when the polymer Y includes the monomer component y2 described in detail later as the monomer component, Accordingly, the content of the monomer component y2 may be reduced, and the function of the monomer component y2 may not be sufficiently exhibited. Further, when the liquid medium is removed from the color filter ink 2 applied on the first colored layer 121, the tendency of the viscosity of the color filter ink 2 to increase as the solid content concentration increases, Involuntary unevenness is likely to occur on the surface of the second colored layer 122 to be formed. In addition, when the polymer Y is a mixture of a plurality of types of compounds, the weighted average value (weighted average value based on the weight ratio) for these compounds is adopted as the content value of the monomer component y1. can do. Moreover, when the polymer Y is a mixture of a plurality of types of compounds, it is preferable that all of these compounds contain the monomer component y1 at the content as described above.

(Monomer component y2)
The polymer Y may contain the monomer component y2 represented by the following formula (16) as a monomer component.

  By containing such a monomer component y2 as a monomer component (particularly, together with the monomer component y1 described above), the resin at the time of storage of the color filter ink 2 or at the time of droplet discharge is used. In the curing treatment performed in a heated environment, the resin material curing reaction (polymerization reaction) can be suitably advanced while more reliably preventing unintentional reaction (polymerization reaction) of the material. In particular, in the curing treatment under a heating environment, the rising of the polymerization reaction of the resin material can be improved, and the polymerization reaction can be continuously advanced. Moreover, the hardness of the 2nd colored layer 122 formed using the ink 2 for color filters can be made excellent by containing the monomer component y2 as a monomer component.

Further, when the polymer Y contains the monomer component y2, the affinity and compatibility with the above-described resin components (polymer M and polymer X) can be sufficiently improved. As a result, even when the color filter ink 2 contains a resin component other than the polymer Y, the discharge stability of the color filter ink 12 can be improved, and the color filter ink 2 The second colored layer 122 formed using is excellent in transparency (a decrease in light transmittance due to the opacity of the resin material is prevented), particularly excellent in adhesion to the first colored layer 121, cracks, etc. This problem is less likely to occur. On the other hand, if the monomer component y2 is not included as a monomer component, when other resin components (polymer M, polymer X) are included, the affinity and compatibility with the other resin components are increased. It becomes difficult to make it sufficiently excellent, and the color filter ink 2 is inferior in ejection stability, and the produced color filter 1 is liable to cause uneven color, contrast, and durability. Therefore, it may be difficult to make reliability and the like sufficiently excellent.
An example of the polymer Y containing the monomer component y2 as a monomer component is represented by the following formula (20).

  The content of the monomer component y2 in the polymer Y (value obtained by conversion based on the weight of the monomer used for polymer synthesis) is preferably 10 wt% or more and 70 wt% or less, and more preferably 20 wt% or more. More preferably, it is 60 wt% or less. When the content of the monomer component y2 in the polymer Y is a value within the above range, the above-described effects can be expressed more significantly without inhibiting the function of the monomer component y1 described above. Can do. On the other hand, when the content of the monomer component y2 in the polymer Y is less than the lower limit value, the effect of including the monomer component y2 may not be sufficiently exhibited. On the other hand, when the content of the monomer component y2 in the polymer Y exceeds the upper limit, the content of the monomer component y1 is relatively lowered, and the function of the monomer component y1 is not sufficiently exhibited. there is a possibility. Further, the reactivity of the polymer Y at a relatively low temperature increases, and the storage stability of the color filter ink 2 tends to decrease. In addition, when the polymer Y is a mixture of a plurality of types of compounds, the weighted average value (weighted average value based on the weight ratio) for these compounds is adopted as the content value of the monomer component y2. can do. Moreover, when the polymer Y is a mixture of a plurality of types of compounds, it is preferable that all of these compounds contain the monomer component y2 with the content as described above.

In addition, the polymer Y may contain monomer components (other monomer components) other than the monomer components y1 and y2 described above. Thereby, for example, the effects derived from the chemical structures of other monomer components can be obtained while exhibiting the above-described characteristics.
When the polymer Y contains other monomer components (monomer components other than the monomer components y1 and y2), the content of other monomer components in the polymer Y (multiple types of other components) In the case where the monomer component is included, the sum of these contents) is preferably 15 wt% or less, and more preferably 10 wt% or less.

The weight average molecular weight of the polymer Y is preferably 1000 or more and 50000 or less, more preferably 1200 or more and 10,000 or less, and further preferably 1500 or more and 5000 or less. Thereby, the temporal stability (long-term storage stability) of the color filter ink 2 and the ejection stability of the color filter ink 2 can be made particularly excellent, and the productivity of the color filter 1 is sufficiently excellent. Furthermore, the flatness of the second colored layer 122 formed using the color filter ink 2 can be made more reliable, and the color in the image displayed using the color filter 1 The occurrence of unevenness can be more effectively prevented.
Moreover, it is preferable that the dispersion degree (weight average molecular weight Mw / number average molecular weight Mn) of the polymer Y is 1 or more and 3 or less.

In addition, each polymer mentioned above should just have the structure (each partial structure corresponding to each monomer component) as mentioned above, and it synthesize | combines using each monomer component itself mentioned above. It may be synthesized, or may be synthesized using a component (precursor, derivative, etc.) different from the monomer component described above.
The resin material content in the color filter ink 2 is preferably 0.7 wt% or more and 18 wt% or less, more preferably 1.0 wt% or more and 15 wt% or less, and 3.0 wt% or more. More preferably, it is 12 wt% or less.

Further, when the color filter ink 2 contains a pigment as a colorant, the content of the resin material in the color filter ink 2 is C _R [wt%], and the content of the pigment in the color filter ink is C _P When [wt%] is satisfied, it is preferable to satisfy the relationship of 0.2 ≦ C _R / C _P ≦ 9.0, and to satisfy the relationship of 0.3 ≦ C _R / C _P ≦ 5.0. More preferably, it is more preferable that the relationship of 0.4 ≦ C _R / C _P ≦ 3.5 is satisfied. By satisfying such a relationship, the contrast and the like of the manufactured color filter 1 can be further improved.
The resin material constituting the color filter ink may contain a polymer other than those described above.

[Other ingredients]
The color filter ink 2 may contain components other than those described above (other components).
Examples of such components include various crosslinking agents, thermal acid generators, photoacid generators, various polymerization initiators, acid crosslinking agents, surfactants, sensitizers, light stabilizers, various dispersants, and light emitting materials. , Leveling agents, antioxidants, ultraviolet absorbers, adhesion improvers, various polymerization accelerators, various light stabilizers, ceramics such as glass, zirconia, alumina, titanium oxide, adhesion promoters, ultraviolet absorbers, aggregation prevention An agent or the like can be used.

  The leveling agent is formed using the color filter ink 2 by reducing the surface tension of the color filter ink 2 to smooth the surface of the color filter ink 2 applied on the first colored layer 121. The second colored layer 122 is flattened. For this reason, since the color filter ink 2 has a leveling agent, it acts synergistically with the effect of the resin material as described above, and the surface of the color filter ink 2 on one colored layer 121 is flatter. It can be. For this reason, the second colored layer 122 formed using the color filter ink 2 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 second colored layer 122 formed using the color filter ink 2 is further flattened, and a decrease in contrast or the like in a display image using the color filter 1 can be more reliably prevented. .

The antioxidant prevents the color filter ink 2 from being deteriorated due to oxidation or the like, and deteriorates due to heat, light, or the like of the colorant or resin material in the second colored layer 122 formed by the color filter ink 2. Can be prevented.
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 color filter ink 2 and the second colored layer 122 from being altered, and in the formed second colored layer 122, the color, brightness, contrast ratio, and the like. It is difficult to affect the optical characteristics of

  The viscosity at 25 ° C. of the color filter ink 2 (viscosity measured using a vibration viscometer) is not particularly limited, but is preferably 4 mPa · s or more and 12 mPa · s or less, preferably 5 mPa · s or more and 11 mPa · s. More preferably, it is s or less. When the viscosity of the color filter ink 2 is a value within the above range, in the droplet discharge by the inkjet method, the variation in the appropriate amount of the color filter ink 2 to be discharged is particularly small, The occurrence of clogging and the like can be prevented more reliably. The measurement of the viscosity of the color filter ink 2 can be performed using, for example, a vibration viscometer, and can be performed in particular according to JIS Z8809.

"Color filter"
Next, the color filter will be described.
In the present embodiment, the color filter 1 has a configuration in which three colored portions 12 (12A, 12B, 12C) and a light shielding portion 13 are provided on one surface side of the substrate 11, and the color filter 1 ′ has a configuration in which a colored portion 12 ′ (12 A ′, 12 B ′, 12 C ′) of three colors and a light shielding portion 13 are provided on one surface side of the substrate 11.

  In the color filter 1, a set of different colored portions 12A, 12B, and 12C constitute one pixel, and in the color filter 1 ′, a set of different colored portions 12A ′ and 12B ′. , 12C ′ constitutes one pixel. In the color filter 1, 1 ', a predetermined number of colored portions 12, 12' are arranged in the horizontal and vertical directions. For example, when the color filters 1 and 1 ′ are high-definition color filters, 1366 × 768 pixels are arranged. When the color filters 1 and 1 ′ are full-high-definition color filters, 1920 × 1080 pixels are arranged. In the case of a color filter for Super Hi-Vision, 7680 × 4320 pixels are arranged. Note that the color filters 1 and 1 ′ may be provided with spare pixels outside the effective pixel region, for example.

<Image display device>
Next, a preferred embodiment of a liquid crystal display device which is an image display device (electro-optical device) having a color filter will be described. In the following description, the image display apparatus having the color filter 1 will be described as a representative example, but the image display apparatus can be similarly applied to the color filter 1 ′.

  FIG. 4 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 side opposite to the surface of the substrate 11 of the color filter 1 facing the liquid crystal layer 62 (lower side in FIG. 4). And a polarizing plate 68 provided on the side of the substrate 66 opposite to the surface facing the liquid crystal layer 62 (upper side in FIG. 4). 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. 4). 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. 4).

"Electronics"
An image display device (electro-optical device) 1000 such as a liquid crystal display device having the color filters 1 and 1 ′ as described above can be used for display portions of various electronic devices.
FIG. 5 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. 6 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. 7 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.

As mentioned above, although this invention was demonstrated based on suitable embodiment, this invention is not limited to the above.
For example, in the above-described embodiment, the case where the red colored layer, the green colored layer, and the blue colored layer are formed in this order in the first colored layer forming step is representatively described. The order of forming the layers is not limited to this. In addition, the color of the colored portion formed in the first colored layer forming step is not limited to that described above. For example, a combination of indigo purple (cyan), reddish purple (magenta), yellow (yellow), and the like may be used.

Moreover, in embodiment mentioned above, although demonstrated as what uses a sheet material in a 1st colored layer formation process, you may use a liquid photosensitive composition in the said process, for example.
In the embodiment described above, the cutting process is described as being performed after the second colored layer forming process. For example, the cutting process is performed between the first colored layer forming process and the second colored layer forming process. It may be a thing.

  In the above-described embodiment, the case where the first colored layer and the second colored layer provided on the surface of the first colored layer contain the same color system colorant (red, green, or blue) is described. However, the first colored layer and the second colored layer provided on the surface of the first colored layer may contain completely different colorants. For example, a second colored layer containing only a yellow colorant as the colorant may be formed on the surface of the first colored layer containing only the red colorant as the colorant.

In the above-described embodiment, the case where two types of color filters are manufactured from one substrate (mother substrate) has been representatively described, but, for example, three or more types from one substrate (mother substrate). The color filter may be manufactured.
In the above-described embodiment, for the color filter 1 among a plurality of types of color filters manufactured from one substrate 11 ′, all types of coloring portions 12 (12A, 12B, 12C) are first colored. Although the case where it is configured by a laminated body of the layer 121 and the second colored layer 122 has been described, for example, only at least one colored portion is configured by a laminated body of the first colored layer and the second colored layer. It may be done.
In the above-described embodiment, the configuration in which only a part of the multiple first colored layers provided on one substrate (mother substrate) is covered with the second colored layer has been described. You may form a 2nd colored layer so that all the 1st colored layers which exist on one board | substrate (mother board | substrate) may be coat | covered.

In the above-described embodiment, a case where a plurality of types of color filters are separately formed depending on whether or not the second colored layer is formed has been described. The composition of the colored layer may be different, or the thickness of the second colored layer may be different.
In the above-described embodiment, the color filter has been described as having three (three colors) colored portions. Even if the color filter has two or less colored portions, four or more colored portions are included. You may have.
In the present invention, the light shielding part forming step may be omitted.

  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, 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.

Next, specific examples of the present invention will be described.
[1] Synthesis of polymer (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) as the monomer component m1 was placed in the flask. ) Methacrylate): 60 parts by weight, methacrylic acid as monomer component m2: 20 parts by weight, stearyl methacrylate as monomer component m3: 20 parts by weight in diethylene glycol monobutyl ether acetate: 30 parts by weight It dropped in the flask over 4 hours using the dripping pump. 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 is maintained (aged) at the same temperature for 4 hours, and then cooled to room temperature, and the monomer component m1, m2, m3 is represented by the above formula (8) A polymer M1 as a combined M was obtained.
(Synthesis Examples 2 to 8)
The same operation as in Synthesis Example 1 except that the solvent (solvent) used in the synthesis of the polymer, the types of monomer components, the ratio of each component were adjusted, and the composition of the polymer was changed as shown in Table 1. Went. As a result, seven types of polymers M (polymers M2 to M8) were obtained.

(Synthesis Example 9)
In a reaction vessel (flask) equipped with a stirrer, reflux condenser, dropping funnel, nitrogen inlet tube and thermometer, 314 parts by weight of diethylene glycol monobutyl ether acetate as a solvent (solvent) was added and heated to 90 ° C. Subsequently, 2,2′-azobis (isobutyronitrile) (AIBN) as a radical initiator: 20 parts by weight and diethylene glycol monobutyl ether acetate (solvent): 30 parts by weight were added to the flask. The monomer component (compound) represented by the formula (11) x1: 180 parts by weight, the monomer component (compound) x2 represented by the formula (12): 90 parts by weight, the formula (13) Monomer component (compound) x3: 15 parts by weight, monomer component (compound) x4: 15 parts by weight represented by the above formula (14), 2,2'-azobis (isobutyronitrile) ) (AIBN): A solution prepared by dissolving 50 parts by weight of diethylene glycol monobutyl ether acetate: 200 parts by weight was added dropwise using a dropping pump over 5 hours, and further aged for 4 hours. Then, it cooled to room temperature and obtained the polymer X1 as the polymer X represented by the said Formula (19) including the monomer components x1, x2, x3, x4.
(Synthesis Examples 10 to 16)
The same operation as in Synthesis Example 9 was performed except that the type of solvent (solvent) used in the synthesis of the polymer and the ratio of each component were adjusted and the composition of the polymer was changed as shown in Table 1. As a result, seven types of polymers X (polymers X2 to X8) were obtained.

(Synthesis Example 17)
In a reaction vessel (flask) equipped with a stirrer, reflux condenser, dropping funnel, nitrogen inlet tube and thermometer, 314 parts by weight of diethylene glycol monobutyl ether acetate as a solvent (solvent) was added and heated to 90 ° C. Subsequently, 2,2′-azobis (isobutyronitrile) (AIBN) as a radical initiator: 20 parts by weight and diethylene glycol monobutyl ether acetate (solvent): 30 parts by weight were added to the flask. , Monomer component (compound) y1: 200 parts by weight represented by formula (15), monomer component (compound) y2 represented by formula (16): 100 parts by weight, 2,2′- A solution prepared by dissolving 50 parts by weight of azobis (isobutyronitrile) (AIBN) in 200 parts by weight of diethylene glycol monobutyl ether acetate was added dropwise over 5 hours using a dropping pump, and further aged for 4 hours. Then, it cooled to room temperature and obtained the polymer Y1 as the polymer Y containing the monomer components y1 and y2 and represented by the said Formula (20).
(Synthesis Examples 18 and 19)
The same operation as in Synthesis Example 17 was performed except that the type of solvent (solvent) used in the synthesis of the polymer and the ratio of each component were adjusted and the composition of the polymer was changed as shown in Table 1. As a result, two types of polymers Y (polymers Y2 and Y3) were obtained.

Table 1 collectively shows the ratio of each monomer component constituting each polymer synthesized in Synthesis Examples 1 to 19 and the weight average molecular weight Mw of each polymer. In the table, methacrylic acid 2- [O- (1′-methylpropylideneamino) carboxyamino] ethyl (= 2- (1-methylpropylideneaminooxycarbonylaminoethyl) methacrylate) is represented by “m1a” and methacrylic acid. 2- (3,5-dimethylpyrazol-1-yl) carbonylaminoethyl is denoted by “m1b”, 2- (3,5-dimethylpyrazol-1-yl) carbonylaminoethyl acrylate is denoted by “m1c”, Methacrylic acid is indicated by “m2a”, acrylic acid is indicated by “m2b”, stearyl methacrylate is indicated by “m3a”, behenyl methacrylate is indicated by “m3b”, palmityl acrylate is indicated by “m3c”, and lignoceryl methacrylate is indicated. Indicated as “m3d”, methyl methacrylate as “m4a”, acrylic Ethyl is indicated by “m4b”, pentyl acrylate is indicated by “m4c”, styrene is indicated by “m5”, 2-hydroxyethyl methacrylate is indicated by “m6”, and 3,4-epoxytricyclo [5.2. A mixture of 1.0 ^2,6 ] decan-9-yl acrylate and 3,4-epoxytricyclo [5.2.1.0 ^2,6 ] decan-8-yl acrylate was designated “m7”. The polymers synthesized as described above all had a dispersity (weight average molecular weight Mw / number average molecular weight Mn) in the range of 1 or more and 3 or less.

[2] Production of color filter (Example 1)
First, a soda glass substrate (2850 × 3050 mm) having a silica (SiO ₂ ) film formed on both sides to prevent elution of sodium ions was prepared and subjected to a cleaning process (substrate preparation step, (1a in FIG. 1). )reference).

Next, by sticking a separately prepared sheet material (sheet material made of a material containing a colorant and a photosensitive resin) to one surface of the substrate, and then repeatedly performing exposure and development processes. The first colored layer of red, the first colored layer of green, and the first colored layer of blue were formed in this order (first colored layer forming step; see (1b) to (1g) in FIG. 1). .)
This step was performed by transferring the sheet material provided on the base film onto the substrate.

Further, as a sheet material for forming a red first colored layer, as a colorant, C.I. I. The thing containing the powder of pigment violet 19 was used.
Further, as the green first colored layer forming sheet material, C.I. I. Pigment Green 7 powder was used.
The sheet material for forming the blue first colored layer includes C.I. I. Pigment Blue 80 powder was used.
The thickness of the red first colored layer formed in this step, the thickness of the green first colored layer, and the thickness of the blue first colored layer were all 2.0 μm.

Next, a light shielding part was formed as follows (light shielding part forming step).
First, a liquid radiation-sensitive composition for forming a light-shielding part containing carbon black is applied to a surface on which a red first colored layer, a green first colored layer, and a blue first colored layer are formed. The coating was applied to the entire side (see (1h) in FIG. 2).
Next, prebaking was performed under the conditions of heating temperature: 110 ° C. and heating time: 120 seconds.

Thereafter, radiation is applied through a photomask, post-exposure baking (PEB) is performed, and subsequently, atmospheric pressure in which a gas in which CF ₄ and He gas are mixed at a volume ratio of 1: 9 is introduced. With a plasma polymerization apparatus, the output is 800 W, the distance from the plasma generator to the table: 0.5 mm, the processing table speed: 10 m / s, only on the surface of the coating film that has been pre-baked and post-exposure baked. Fluorine doped. Then, the light-shielding part was formed by performing the development process using an alkali developing solution, and also performing the post-baking process (refer (1i) of FIG. 2). PEB was performed under the conditions of heating temperature: 110 ° C., heating time: 120 seconds, and radiation irradiation intensity: 150 mJ / cm ² . The development process was performed by, for example, a vibration dipping method. The development processing time was 60 seconds. Moreover, the post-baking process was performed on the conditions of heating temperature: 140 degreeC and heating time: 10 minutes. The formed light shielding part had a thickness of 2.2 μm.

  Next, by using a droplet discharge device as shown in FIG. 3, a part of a large number of first colored layers (excluding a portion where a colored portion composed only of the first colored layer is to be formed) A color filter ink containing a colorant by an inkjet method on a part, which is a part where a colored part composed of a laminate of the first colored layer and the second colored layer is to be formed) This was applied while adjusting the discharge amount (see (1j) in FIG. 2).

Thereafter, the substrate to which the color filter ink was applied was subjected to a heat treatment at 80 ° C. for 20 minutes on a hot plate (first heat treatment).
Further, heat treatment was performed at 230 ° C. for 50 minutes in a reduced pressure firing furnace (−20 kPa) (second heat treatment), thereby forming a second colored layer (see (1k) in FIG. 2). The thickness of the red second colored layer, the thickness of the green second colored layer, and the thickness of the blue second colored layer formed in this step are different in each region. It was 2 μm or more and 0.6 μm or less.

  After cleaning with N-methyl-2-pyrrolidone and γ-butyrolactone, the substrate (mother substrate) was cut to obtain a large number of substrates. As a result, as five types of color filters, a color filter (first color filter) having a size of 870 × 655 mm and having a colored portion composed of only the first colored layer: two sheets and a size of 870 × 430 mm A color filter (second color filter) including a colored portion made of a laminate of the first colored layer and the second colored layer: two sheets, a size of 420 × 310 mm, the first colored layer Color filter (third color filter) comprising a colored portion composed of a laminate of the first colored layer and the second colored layer: two sheets, a size of 310 × 210 mm, the first colored layer and the second colored layer Color filter (fourth color filter) comprising a colored portion made of a laminate of the above: 2) and a colored portion made of a laminate of a first colored layer and a second colored layer having a size of 150 × 70 mm With Color filter (fifth color filter): 2 sheets were obtained.

  The above-described method is performed on a total of 10 mother substrates, a total of 20 first color filters (870 × 655 mm), a total of 20 second color filters (870 × 430 mm), and a third color filter. A total of 20 sheets (420 × 310 mm), a total of 20 fourth color filters (310 × 210 mm), and a total of 20 fifth color filters (150 × 70 mm) were obtained.

(Examples 2 to 10)
Except that the types of colorants contained in the sheet material and the composition of the color filter ink are as shown in Tables 2 and 3, a predetermined number of each of the five types of color filters are manufactured in the same manner as in Example 1. did.

(Comparative Example 1)
First, sheet materials (a total of 15 types) adjusted to have color tones corresponding to the three colored portions included in the color filter (5 types) manufactured in Example 1 were prepared.
Using the three types of sheet materials selected from these 15 types of sheet materials in combination, the substrate preparation step, the first colored layer forming step, and the light shielding portion forming step are performed in the same manner as described in the above embodiment. Thereafter, the substrate (mother substrate) was cut into a predetermined size to obtain 20 first color filters (870 × 655 mm). In this comparative example, five mother substrates were required to produce 20 first color filters (870 × 655 mm).

Similarly, 20 sheets are used in the same manner as described above except that the other three types of sheet materials selected from the above-mentioned 15 types of sheet materials are used in combination and the size of the substrate (mother substrate) is changed. Second color filter (870 × 430 mm), 20 third color filters (420 × 310 mm), 20 fourth color filters (310 × 210 mm), 20 fifth color filters (150 × 70 mm) was obtained.
In this comparative example, a total of 12 mother substrates were required to manufacture a predetermined number of the first to fifth color filters.

(Comparative Example 2)
First, ink (a total of 15 types) was prepared so that it might become a color tone corresponding to the coloring part of three colors with which the color filter (5 types) manufactured in the said Example 1 was equipped.
Using these three types of inks selected from the 15 types of inks in combination, the substrate preparation step, the light shielding portion forming step, and the second colored layer forming step are performed in the same manner as described in the above embodiment, and then By cutting the substrate (mother substrate) into a predetermined size, 20 first color filters (870 × 655 mm) were obtained. In this comparative example, ink is applied to all the areas where the colored portions of each color are to be formed (regions (cells) surrounded by the light-shielding portions), and the amount of ink applied is the amount of the colored portions to be formed. The thickness was adjusted to 2.0 μm.

Similarly, the other three types of ink selected from the above-mentioned 15 types of sheet materials are used in combination, and the size of the substrate (mother substrate) is changed. Second color filter (870 × 430 mm), 20 third color filters (420 × 310 mm), 20th fourth color filter (310 × 210 mm), 20th fifth color filter (150 × 70 mm).
In this comparative example, a total of 12 mother substrates were required to manufacture a predetermined number of the first to fifth color filters.

  Tables 2 and 3 collectively show the composition of the sheet material used for the production of the color filter and the composition of the color filter ink for each of the examples. In the table, a resin (trade name: YL6810, manufactured by Japan Epoxy Resin Co., Ltd.) as a photo-curable resin is referred to as “PCR”, C.I. I. Pigment Violet 19 is “PV19”, C.I. I. Pigment Red 255 is “PR255”, C.I. I. Pigment Red 264 is "PR264", C.I. I. Pigment Red 122 is “PR122”, C.I. I. Pigment Green 7 is “PG7”, C.I. I. Pigment Blue 80 is “PB80”, C.I. I. Pigment Blue 15: 2 is changed to “PB15: 2”, C.I. I. Pigment Red 177 is “PR177”, C.I. I. Pigment Red 254 is "PR254", C.I. I. Pigment Red 177 and a pigment derivative represented by the formula (30) were mixed with “PR177D”, C.I. I. “PR254D” is a mixture of Pigment Red 254 and a pigment derivative represented by the formula (31), and a powder composed of a pigment derivative (one sulfo group in the molecule) represented by the following formula (34) is “ SPD1 ”, a powder composed of a pigment derivative represented by the following formula (35) (two sulfo groups in the molecule) is designated as“ SPD2 ”, C.I. I. Pigment Green 36 is “PG36”, C.I. I. Pigment Green 58 is changed to “PG58”, C.I. I. Pigment Blue 15: 6 is changed to “PB15: 6”, C.I. I. Pigment Yellow 150 is changed to “PY150”, C.I. I. Pigment Violet 23 is “PV23”, Dispersic 111 is “DA1”, Dispersic 2095 is “DA2”, Dispersic P104 is “DA3”, Dispersic 166 is “DA4”, Dispersic 9075 is “DA5”, Dispersic 2001 is “DA6”, diethylene glycol monobutyl ether acetate is “S1”, 1,3-butylene glycol diacetate is “S2”, and 2- (2-methoxy-1-methylethoxy) -1-methylethyl acetate is “S3”. Bis (2-butoxyethyl) ether is "S4", ethyl octoate is "S5", diethylene glycol mononormal butyl ether is "S6", triethylene glycol mononormal butyl ether is "S7", 3-ethoxypropoxy It showed the phosphate ethyl with "S8". In the table, the red first colored layer forming sheet material is “R sheet”, the green first colored layer forming sheet material is “G sheet”, and the blue first colored layer forming material is used. Sheet material “B sheet”, red second colored layer forming ink (color filter ink) “R ink”, and green second colored layer forming ink (color filter ink). The “G ink” and the blue second colored layer forming ink (color filter ink) were indicated as “B ink”. In the tables, “parts” of content indicates parts by weight. In addition, C. used in each Example. I. The content of the pigment derivative represented by the formula (30) in the mixture of Pigment Red 177 and the pigment derivative represented by the formula (30) was 0.1 wt% or more and 10 wt% or less. The C.I. used in each of the above examples. I. The content of the pigment derivative represented by the formula (31) in the mixture of Pigment Red 254 and the pigment derivative represented by the formula (31) was 0.1 wt% or more and 10 wt% or less. In addition, the viscosity at 25 ° C. of the color filter inks of each of the examples measured using a vibration viscometer in accordance with JIS Z8809 is in the range of 5 mPa · s to 11 mPa · s. Value.

[3] Productivity evaluation of color filter For each of the above examples and comparative examples, the overall productivity (including the production of sheet materials and the preparation of ink) of multiple types and a large number of color filters is as follows. Evaluation was performed according to a six-step standard.
A: The productivity as a whole was very excellent.
B: Productivity as a whole was excellent. .
C: The productivity as a whole was good.
D: The productivity as a whole was slightly inferior.
E: Productivity as a whole was inferior.
F: Productivity as a whole was very poor.
These results are shown in Table 4.

  As is apparent from Table 4, in the present invention, it was possible to produce a wide variety of color filters with excellent productivity, whereas in each of the comparative examples, the color filter productivity was inferior. In particular, in Comparative Example 1, it takes a long time to replace the ink in the droplet discharge device with a change in the type of the color filter to be manufactured, and the productivity of the color filter as a whole is extremely low. It was. Although it may be considered that the replacement of the ink in the droplet discharge device may be omitted, in such a case, it is necessary to provide a head, a flow path, a tank, etc. corresponding to all the inks to be discharged (15 types of ink). This is not practical because it involves problems such as an increase in the size of the apparatus. In such a case, the maintenance of the apparatus becomes very complicated, and as a result, it is difficult to sufficiently improve the productivity of the color filter.

The produced color filters were evaluated for the occurrence of color unevenness in the display image, the contrast ratio, and the lightness. As a result, the color filters obtained in the respective examples (invention) were satisfactory. was gotten. In particular, the color filters obtained in Examples 1 to 4 and Example 10 (in particular, Examples 1 to 4) obtained particularly excellent results for the above evaluation items.
Among the present inventions, the inks used in Examples 1 to 4 and Example 10 (in particular, the inks used in Examples 1 to 4) are particularly excellent in droplet ejection stability and long-term storage stability. As a result, a more stable color filter could be produced over a long period of time.

  DESCRIPTION OF SYMBOLS 1, 1 '... Color filter 11 ... Board | substrate 11' ... Board | substrate (mother board | substrate) 12, 12A, 12B, 12C, 12 ', 12A', 12B ', 12C' ... Coloring part 121 ', 121A', 121B ', 121C '... sheet material 121, 121A, 121B, 121C ... first colored layer 122, 122A, 122B, 122C ... second colored layer 13 ... light shielding part 2, 2A, 2B, 2C ... color filter ink (ink) 3 ... Coating film 50 ... CCD camera 60 ... Liquid crystal display device 61 ... Common electrode 62 ... Liquid crystal layer 63, 64 ... Alignment film 65 ... Pixel electrode 66 ... Substrate (counter substrate) 67, 68 ... Polarizing plate 100 ... Droplet ejection device 101 ... Tank 102 ... Discharge scanning unit 103 ... Droplet discharge means 104 ... First position control device (moving means) 106 ... Stage 108 ... First Position control device (moving means) 110 ... Tube 112 ... Control means 1000 ... Image display device 1100 ... Personal computer 1102 ... Keyboard 1104 ... Main body 1106 ... Display unit 1200 ... Mobile phone 1202 ... Operation button 1204 ... Earpiece 1206 ... Transmission 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 ... Television monitor 1440 ... Personal computer

Claims (8)

A method for producing a color filter provided with a plurality of colored portions,
A substrate preparation process for preparing a substrate;
A first colored layer is formed by forming a layer composed of a material containing a colorant and a photosensitive resin on the substrate, and then exposing and developing to form a plurality of first colored layers. Process,
A second colored layer forming step of forming a second colored layer by applying an ink containing a colorant on at least a part of the plurality of the first colored layers by an inkjet method;
And a cutting process for cutting the substrate into a plurality of parts.   The manufacturing method of the color filter of Claim 1 using the sheet | seat material comprised with the material containing the said coloring agent and the said photosensitive resin in a said 1st colored layer formation process.   The color filter according to claim 1, further comprising a light shielding part forming step of forming a light shielding part, wherein the light shielding part exists between the adjacent colored parts in the color filter. Manufacturing method.   Furthermore, the said light-shielding part is a manufacturing method of the color filter of Claim 3 formed as a thing thicker than a said 1st colored layer.   The method for producing a color filter according to claim 1, wherein, in the cutting step, a plurality of types of the color filters having different sizes are cut out. The ink used in the second colored layer forming step includes, as a resin material, a monomer component m1 represented by the following formula (1), a monomer component m2 having a carboxyl group or an acid anhydride group, and the following formula. The method for producing a color filter according to any one of claims 1 to 5, comprising a polymer M containing the monomer component m3 represented by (3).

The ink used in the second colored layer forming step includes, as a resin material, a monomer component x1 represented by the following formula (11), a monomer component x3 represented by the following formula (13), and the following formula. The method for producing a color filter according to any one of claims 1 to 6, comprising a polymer X containing the monomer component x4 represented by (14).

The said ink used at a said 2nd colored layer formation process contains the polymer Y containing the monomer component y1 represented by following formula (15) as a resin material. Manufacturing method of color filter.

Images