JP2011158741A - Method for manufacturing color filter, color filter, image display device and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a color filter which effectively prevents occurrence of color unevenness and has excellent durability, with excellent productivity. <P>SOLUTION: The method for manufacturing the color filter has: a substrate preparing step to prepare a substrate; a first coloring section forming step to form a coloring section by sticking a sheet material composed of a material including a colorant and a photosensitive resin, onto the substrate, and subsequently by exposing and developing the sheet material; and a second coloring section forming step to form a coloring section with a plurality of colors by imparting an ink onto the substrate with an inkjet mode, wherein coloring section forming regions with different colors formed in the second coloring section forming step are arranged so as not to be adjacent to each other. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

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

A color filter is generally used for a liquid crystal display (LCD) or the like that performs color display. The color filter is generally provided with three colored portions corresponding to the three primary colors of light, red (R), green (G), and blue (B). In a liquid crystal display device equipped with a color filter, Color display is performed by adjusting the amount of light transmitted through the colored portions of these colors.
A color filter has conventionally formed a coating film of a liquid composition composed of a material (a composition for forming a colored portion) containing a pigment, a photosensitive resin, a functional monomer, a polymerization initiator, etc. on a substrate, and then It has been manufactured by using a so-called photolithography method in which light is irradiated through a photomask, a photosensitive process, a development process, and the like.

  On the other hand, in recent years, a method for forming a colored portion of a color filter using an inkjet head (droplet discharge head) has been proposed (see, for example, Patent Document 1). In such a manufacturing method using an ink jet method, waste of the material for forming the colored portion (composition for forming the colored portion) can be reduced, so that the burden on the environment can be reduced and the manufacturing cost is also reduced. Can be suppressed.

  By the way, a droplet discharge device (for industrial use) used for manufacturing a color filter is completely different from that applied to a printer (for consumer use). For example, mass production or large work (substrate) is performed. Therefore, it is required to eject a large amount of droplets for a long time. In addition, in order to improve the adhesion of the colored portion to be formed to the substrate, the color filter ink used for the production of the color filter generally contains a resin material (binder resin), and is a printer. Compared to the ink used in the application (for consumer use), the content of the colorant is high, the viscosity is high, and the load on the droplet discharge device (particularly near the head) accompanying the droplet discharge is large. In the production of color filters, ink is ejected over a long period of time, and solids contained in the ink adhere to the ink flow path. Problems such as bending occur, and other color inks may be mixed (mixed color) in areas where colored portions are to be formed with ink of a predetermined color, resulting in color unevenness in the display image of the manufactured color filter. there were.

  In addition, as described above, the color filter generally includes three colored portions of RGB corresponding to the three primary colors of light, but further improvement in the image quality of the display image (expansion of the color reproduction range) is required. Yes. In order to meet such a demand, it is conceivable to increase the number of colors of the color filter (the number of colors in the colored portion should be 4 or more). It occurs more prominently.

JP 2008-225124 A

  An object of the present invention is to provide a manufacturing method that can effectively prevent the occurrence of color unevenness and produce a color filter having excellent durability with high productivity, and the occurrence of color unevenness is effectively prevented. Another object of the present invention is to provide a color filter having excellent durability, and to provide an image display device and an electronic apparatus provided with the color filter.

Such an object is achieved by the present invention described below.
The method for producing a color filter of the present invention is a method for producing a color filter having a plurality of colored portions,
A substrate preparation process for preparing a substrate;
A first colored part forming step of forming a colored part by sticking a sheet material composed of a material containing a colorant and a photosensitive resin on the substrate, and then exposing and developing;
A second colored portion forming step of applying ink on the substrate by an inkjet method to form a colored portion of a plurality of colors;
The formation regions of the colored portions of different colors formed in the second colored portion forming step are arranged so as not to be adjacent to each other.
Accordingly, it is possible to provide a manufacturing method that can effectively prevent color unevenness and can manufacture a color filter excellent in durability with high productivity.

In the color filter manufacturing method of the present invention, it is preferable to further include a light shielding part forming step of forming a light shielding part.
Thereby, the contrast of the image displayed using a color filter can be made particularly excellent.
In the method for producing a color filter of the present invention, the light shielding portion forming step is performed between the first colored portion forming step and the second colored portion forming step, and a liquid composition is used. It is preferable to carry out by photolithography.
As a result, the productivity of the color filter can be made particularly excellent, and the adhesion of the colored portion and the light shielding portion of each color to the substrate can be made particularly excellent, so that the durability of the color filter is particularly improved. It can be excellent.

In the method for producing a color filter of the present invention, a plurality of colored portions are formed in the first colored portion forming step,
When the substrate is viewed in plan, each colored portion has a polygonal shape, and each colored portion formed in the first colored portion forming step excludes the outer peripheral portion of the effective pixel region. It is preferable that the three or more sides are arranged so as to be adjacent to the colored portion of the same color or the colored portion formed in the second colored portion forming step.
As a result, the productivity of the color filter can be made particularly excellent, the adhesion of the colored portion of each color to the substrate can be made particularly excellent, and the durability of the color filter is particularly excellent It can be.

In the method for producing a color filter of the present invention, in the first colored portion forming step, a red colored portion, a green colored portion, and a blue colored portion are formed,
In the second colored portion forming step, it is preferable to form a cyan colored portion, a magenta colored portion, and a yellow colored portion.
Thereby, the color reproduction range of the manufactured color filter can be made particularly wide. In addition, it is possible to more stably perform ink ejection in the second colored portion forming step while preventing the colorant from being modified or deteriorated by the exposure process in the first colored portion forming step. As a result, the productivity of the color filter can be made particularly excellent, and the reliability of the produced color filter can be made particularly excellent.

In the method for producing a color filter of the present invention, the ink used in the second colored portion forming step includes, 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 discharge stability of the ink used in the second colored portion forming step, the storage stability of the ink, and the like can be made particularly excellent, and a color filter can be manufactured 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.

これにより、製造されるカラーフィルターの各部位での色むらの発生やコントラストの低下等をより確実に防止することができ、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 portion 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).

As a result, 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 durability and reliability of the color filter can be made particularly excellent. .

これにより、第２の着色部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しつつ、当該インクを用いて形成される着色部の基板に対する密着性を特に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 portion forming step includes a polymer Y containing a monomer component y1 represented by the following formula (15) as a resin material. It is preferable.

As a result, the discharge stability of the ink used in the second colored portion forming step is excellent, and the adhesion of the colored portion formed using the ink to the substrate can be particularly excellent. The durability and reliability of the color filter can be made particularly excellent.

The color filter of the present invention is manufactured using the method of the present invention.
Thereby, the occurrence of uneven color can be effectively prevented, and a color filter having excellent durability can be provided.
The color filter of the present invention is a color filter in which a plurality of colored portions are provided on a substrate,
As the plurality of colored portions, a plurality of colored portions formed by an inkjet method, and a colored portion formed using a sheet material made of a material containing a colorant and a photosensitive resin,
The colored portions of different colors formed by the ink jet method are arranged so as not to be adjacent to each other.
Thereby, the occurrence of uneven color can be effectively prevented, and a color filter having excellent durability can be provided.

An image display device according to the present invention includes the color filter according to the present invention.
Accordingly, it is possible to provide an image display device capable of stably displaying an excellent image in which occurrence of color unevenness is effectively prevented over a long period of time.
An electronic apparatus according to the present invention includes the image display device according to the present invention.
Accordingly, it is possible to provide an electronic apparatus that can stably display an excellent image in which generation of color unevenness is effectively prevented over a long period of time.

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 top view which shows suitable embodiment of the manufacturing method of the color filter of this invention. It is a top view 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. It is a top view which shows an example of arrangement | positioning of the coloring part in the color filter of this invention. 10 is a plan view showing an arrangement of colored portions in a color filter of Comparative Example 3. FIG.

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 sectional views showing a preferred embodiment of the method for producing a color filter of the present invention, and FIGS. 3 and 4 are plan views showing a preferred embodiment of the method for producing a color filter of the present invention. FIG. 5 is a perspective view showing a droplet discharge device used for manufacturing a color filter. In FIGS. 3 and 4, the region where the colored portion is to be formed is indicated by a broken line portion. Further, in FIGS. 3 and 4, a region where one pixel is to be formed is indicated by a dashed line. Moreover, (1a) to (1k) in FIGS. 1 and 2 correspond to (1a) to (1k) in FIGS. 3 and 4, respectively.

  In the color filter manufacturing method of the present embodiment, a substrate preparation step (1a) for preparing the substrate 11, and a sheet material made of a material containing a colorant and a photosensitive resin are adhered on the substrate 11, Thereafter, by exposing and developing, a first colored portion forming step (1b to 1g) for forming colored portions of a plurality of colors, a light shielding portion forming step (1h, 1i) for forming the light shielding portion 13, and the substrate 11 And a second colored portion forming step (1j, 1k) for applying ink by an inkjet method to form a colored portion of a plurality of colors. And the colored part of a different color formed at the 2nd colored part formation process is arranged so that it may not adjoin mutually.

<Board preparation process>
First, the substrate 11 is prepared (1a). The board | substrate 11 is a plate-shaped member which has a light transmittance, and has the function to hold | maintain the coloring part 12 (12A, 12B, 12C, 12D, 12E, 12F) and the light-shielding part 13. FIG.
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 filter 1.

The substrate 11 is preferably excellent in heat resistance and mechanical strength. Thereby, for example, deformation due to heat applied during the manufacture of the color filter 1 can be reliably prevented. Examples of the constituent material of the substrate 11 that satisfies such conditions include glass, silicon, polycarbonate, polyester, aromatic polyamide, polyamideimide, polyimide, norbornene-based ring-opening polymer, and hydrogenated products thereof.
The substrate 11 prepared in this step is preferably subjected to a cleaning process. In addition, the substrate 11 prepared in this step has been subjected to appropriate pretreatment such as chemical treatment with a silane coupling agent or the like, plasma treatment, ion plating, sputtering, gas phase reaction method, vacuum deposition, and the like. Also good.

<First colored portion forming step>
Next, a sheet material made of a material containing a colorant and a photosensitive resin is stuck on the substrate 11, and then exposed and developed, whereby a red colored portion 12A is formed as a colored portion of a plurality of colors. The green colored portion 12B and the blue colored portion 12C are formed (1b to 1g).
More specifically, in this step, a process (1b) for sticking the sheet material 12A ′ for forming the red colored portion 12A, a process (1c) for exposing the sheet material 12A ′ with a predetermined pattern, and further developing the sheet material (1c). ), A process (1d) for sticking the sheet material 12B ′ for forming the green colored portion 12B, a process (1e) for exposing the sheet material 12B ′ with a predetermined pattern, and further developing (1e), and a blue coloration A process (1f) for sticking the sheet material 12C ′ for forming the part 12C and a process (1g) for exposing the sheet material 12C ′ in a predetermined pattern and further developing the sheet material 12C ′ are performed.

  In particular, in the present embodiment, the red colored portion 12A, the green colored portion 12B, and the blue colored portion 12C are formed in the first colored portion forming step. The colorant used for forming the colored portion of these colors is generally a colored portion of other color described later (particularly, a colored portion of cyan-purple (cyan), a colored portion of magenta (magenta), and a colored portion of yellow (yellow). Compared with the colorant used for forming the (part), a chemical reaction due to radical generation during the exposure process is less likely to occur. For this reason, by forming a red colored portion, a green colored portion, and a blue colored portion in this step, the target color tone is obtained in the colored portion formed in this step in the color filter finally obtained. It is possible to more reliably prevent the occurrence of problems such as inadequate and insufficient adhesion to the substrate due to defective effects, and the reliability of the finally obtained color filter should be particularly excellent Can do.

  Further, in the conventional photolithography method, a liquid photosensitive material is applied to form a coating film, whereas in the first colored portion forming step of the present invention, the colored portion (12A, 12B, 12C) is formed. A sheet material is used for forming the film. Thereby, the variation in thickness within a single colored portion and the variation in thickness between pixels can be made particularly small. Further, the productivity of the color filter as a whole can be made sufficiently high. Moreover, it can respond | correspond suitably also to a large sized board | substrate.

In addition, the colored portions (12A, 12B, and 12C) using the sheet material are formed before the formation of the light shielding portion 13 and the colored portions (12D, 12E, and 12F) formed by the ink jet method, which will be described in detail later. Thus, the sheet material can be attached in a state where the surface of the substrate 11 as the adherend has less unevenness. As a result, the adhesion between the substrate 11 and the sheet material (12A ′, 12B ′, 12C ′) can be made particularly excellent. As a result, even in the finally obtained color filter 1, the substrate 11 and Adhesiveness with the colored portions (12A, 12B, 12C) can be made particularly excellent. As a result, the durability and reliability of the color filter 1 can be made particularly excellent.
In this step, the sheet material (12A ′, 12B ′, 12C ′) may be attached to the substrate 11 by any method, but the sheet material (12A ′, 12B ′, 12C ′) provided on the base film. Is preferably transferred onto the substrate 11. Thereby, the productivity of the color filter 1 can be made particularly excellent.

  Also, as shown in FIG. 3, when the substrate 11 is viewed in plan, the areas to be the colored portions (12A, 12B, 12C, 12D, 12E, 12F) are polygonal, and in this step The colored portions (12A, 12B, 12C) to be formed are all colored portions having the same color at three or more sides in a portion excluding the outer peripheral portion of the region (effective pixel region) where the colored portion 12 is formed. Or it is preferable to arrange | position so that the colored part (12D, 12E, 12F) formed at a 2nd colored part formation process may be adjoined. Thereby, the productivity of the color filter 1 can be made particularly excellent, and the adhesion of the colored portion 12 and the light shielding portion 13 of each color to the substrate 11 can be made particularly excellent. Can be made particularly excellent in durability. More specifically, there are more types (6 types) of colored portions constituting one pixel than conventional color filters. In the color filter according to this embodiment, the width of each colored portion (adjacent colored portions) In this step, if there are too many sides adjacent to different types of colored portions to be formed in this step, a colored portion adjacent to the previously formed colored portion is formed. While it is difficult to ensure that the sheet material is in close contact with the substrate, such an arrangement can reliably prevent the occurrence of such a problem, and the effects described above can be obtained. It is done.

  In particular, when the shape of each colored portion 12 when the substrate 11 is viewed in plan is a quadrilateral shape as in the illustrated configuration, the colored portions (12A, 12B, 12C) to be formed in this step are all colored. In the region excluding the outer peripheral portion of the region where the portion 12 is formed (effective pixel region), the four sides are adjacent to the colored portion of the same color or the colored portion formed in the second colored portion forming step. Is preferred. Thereby, the effects as described above are more remarkably exhibited.

Further, in the present embodiment, there is a region in which the colored portions of the same color are adjacent to each other between adjacent pixels (in the configuration shown, a region in which four colored portions of the same color are adjacent to each other). (See (1e) in FIG. 3, (1g) in FIG. 4). Thereby, the effects as described above are more remarkably exhibited.
In the present invention, “adjacent” refers to a state in which attention is paid only to a colored portion that should constitute a color filter, and in a state in which the presence of a region where a light shielding portion to be described later is to be formed is ignored. Refers to that.

The sheet material 12A ′ has 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.

Further, the sheet material 12B ′ has C.I. 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.
Further, the sheet material 12B ′ 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.
The sheet material 12B ′ 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.

The sheet material 12B ′ 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.
Further, the sheet material 12C ′ 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.

<Light shielding part forming step>
Next, the light shielding part 13 is formed (1h, 1i).
Thus, by forming the light shielding part 13, the contrast of an image displayed using the color filter 1 finally obtained can be made particularly excellent. In particular, by forming the light shielding portion 13 before the second colored portion forming step, the ink (color filter ink) used in the second colored portion forming step, which will be described later, is the first colored portion. The thickness uniformity of each colored portion 12 can be made high while effectively preventing the colored portion (12A, 12B, 12C) formed in the portion forming step from adhering to the upper surface or the like. .

  In the present embodiment, the light shielding portion forming step is performed between the first colored portion forming step and the second colored portion forming step, and is performed by a photolithography method using a liquid composition. It is. Thereby, the productivity of the color filter 1 can be made particularly excellent, and the adhesion of the colored portion 12 and the light shielding portion 13 of each color to the substrate 11 can be made particularly excellent. The durability 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 where the colored parts 12A, 12B, and 12C are provided to form the coating film 3 (1h). . In addition, after giving a radiation sensitive composition on the 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 a treatment, only the bank surface (upper surface in the drawing, the portion excluding the inner wall surface) is made liquid repellent, and the colored portions (12D, 12E, 12F) formed in the subsequent second colored portion forming step. ) Contributes to the flattening of the surface. 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 portion forming step>
Next, the ink 2 is applied on the substrate 11 by an ink jet method, and a cyan colored portion, a magenta colored portion, and a yellow colored portion are formed as colored portions. (1j, 1k). The ink 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.

  And the formation area | region of the coloring part of a different color formed at this process is arrange | positioned so that it may not mutually adjoin. As a result, for example, by discharging ink over a long period of time, droplet discharge becomes unstable, and even when the flying curve of the droplet occurs, a colored portion is formed with a predetermined color ink. It is possible to reliably prevent the occurrence of problems such as the occurrence of color unevenness in the display image of the manufactured color filter because inks of other colors are mixed (mixed color) in the power region. That is, in the present invention, the colored portion formed in the first colored portion forming step (consisting of a material containing a colorant and a photosensitive resin is formed so that the colored portions of different colors formed by the inkjet method are not adjacent to each other. (Colored part formed using sheet material) is arranged, so even if the flying curve of droplets occurs, the area to which ink of other colors used in the ink jet method is applied (in the cell) It can be surely prevented from being mixed in. The ink attached to the surface of the colored portion formed in the first colored portion forming step can be easily and reliably removed by performing washing or the like after the second colored portion forming step. As described above, the present invention can surely prevent the problem due to the unintentional color mixing of the ink, and therefore, compared with the conventional manufacturing method, the substrate of the inkjet head from the viewpoint of the landing position accuracy of the ink droplets. It is possible to relax conditions such as the relative movement speed with respect to. For this reason, the productivity of the color filter can be further improved. Further, if the number of colors of the colored portion of the color filter is increased from the conventional three colors, the width of each colored portion is reduced, so that problems due to color mixing are more likely to occur. Since problems due to color mixing can be surely prevented, it is possible to suitably cope with the increase in color of the color filter (the number of colors in the colored portion is 4 or more).

  On the other hand, for example, when the colored portions of all colors are formed only by the photolithography method, the productivity of the color filter is lowered. In particular, when the colored portions of all colors are formed using the sheet material as described in the first colored portion forming step, the presence of the previously formed colored portions ensures that the sheet material is attached to the substrate. It becomes difficult to make it adhere closely and it becomes difficult to make the manufactured color filter sufficiently durable and reliable.

  In the present embodiment, in the first colored portion forming step, a red colored portion, a green colored portion, and a blue colored portion are formed, and in the second colored portion forming step, indigo purple (cyan) is formed. A colored part, a magenta colored part and a yellow colored part are formed. Thereby, the color reproduction range of the manufactured color filter can be made particularly wide. In addition, it is possible to more stably perform ink ejection in the second colored portion forming step while preventing the colorant from being modified or deteriorated by the exposure process in the first colored portion forming step. As a result, the productivity of the color filter can be made particularly excellent, and the reliability of the produced color filter can be made particularly excellent.

In this step, first, the color filter ink 2 is applied to the cell 14 surrounded by the light shielding portion (partition wall) 13 by an inkjet method (1j).
In this step, a plurality of colors corresponding to a plurality of colored portions 12 to be formed (cyan colored portion 12D, magenta colored portion 12E, and yellow colored portion 12F). Filter ink 2 is used. At this time, since the light shielding portion (partition wall) 13 is provided, it is possible to reliably prevent the two or more kinds of color filter inks 2 from being mixed.

The color filter ink 2 is discharged using a droplet discharge device as shown in FIG.
As shown in FIG. 5, 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 the substrate 11 (hereinafter simply referred to as “substrate 11”) provided with the coloring portions 12A, 12B, and 12C and the light shielding portion 13, and a second position control device that controls the position of the stage 106. 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 having the cells 14 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 relatively Moving).
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 corresponding to the colored portions 12D, 12E, and 12F is applied to the cells 14. By using the apparatus as described above, the color filter ink 2 can be efficiently and selectively applied to the cells 14. In the illustrated configuration, the droplet discharge device 100 has only one tank 101, a tube 110, and the like for holding the color filter ink 2, but these members should be formed in this step. You may have only the number of the kinds of coloring parts 12. 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 in the cell 14, and the curable resin is cured (curing treatment) to obtain solid colored portions 12 (12D, 12E, 12F) (1k). . Thereby, the color filter 1 is obtained.
Removal of the liquid medium and curing of the curable resin are usually performed by heating. Thereby, the adhesiveness with respect to the board | substrate 11 of the colored part 12 formed can be made especially excellent. Further, it is possible to reliably prevent the liquid medium of the color filter ink 2 from remaining in the formed colored portion 12. As a result, the durability and reliability of the color filter 1 can be made particularly excellent. Also, the productivity of the color filter 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. Thereby, the curing reaction of the resin material can be efficiently advanced while preventing the unintentional deterioration / decomposition of the constituent material of the colored portion 12, and the liquid medium can be suitably removed from the color filter ink 2.
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 that heats the substrate 11 at a relatively low temperature and a second heat treatment that heats the substrate 11 at a temperature higher than the first heat treatment are performed. May be.
As a result, unintentional deterioration / decomposition of the constituent material of the colored portion 12 is prevented, the productivity of the color filter 1 is improved, and the liquid medium remains in the formed colored portion 12. Can be prevented.

Further, in this step, by performing 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, The flatness of the surface of the coloring part 12 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 2. The fluidity can be lost or reduced in a state in which the surface is flat. 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, but is 30 ° C. The temperature is preferably 100 ° C. or lower and more preferably 40 ° C. or higher and 80 ° C. or lower. 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 more preferably 150 ° C. or higher and 250 ° C. or lower. preferable. 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 ink 2 for color filters was provided in a pressure-reduced environment, for example.

  By placing the substrate 11 provided with the color filter ink 2 in a reduced pressure environment (depressurization treatment), the liquid medium can be removed more efficiently, or the colored portion in the pixel (cell) can be removed. Even when the shape can be surely preferred, or even when the heating temperature is relatively low, the liquid medium can be reliably removed, and the substrate 11, the colored portion 12 to be formed, etc. The effect of preventing the occurrence of adverse effects on the water can be obtained more reliably. Moreover, a colored part can be more efficiently formed by using heat processing and pressure reduction processing together.

  Thereafter, cleaning with a cleaning liquid such as N-methyl-2-pyrrolidone or γ-butyrolactone and chemicals is performed. As a result, even when the solid content of the ink used in the second colored portion forming step adheres to the surface of the colored portion formed in the first colored portion forming step, the solid content is easily and reliably removed. It is possible to reliably prevent the occurrence of adverse effects in the display image of the color filter obtained.

Next, the ink (color filter ink) used in the second colored portion forming step will be described in detail.
The color filter ink 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.
A pigment having an α-phthalocyanine structure, a β-phthalocyanine structure, or an anthraquinone structure is preferably used as the colorant constituting the ink 2 used for forming the cyan-colored portion 12D. When such a pigment is included, the color gamut of the color filter 1 can be made particularly wide. In addition, the above-mentioned pigment has excellent affinity with a resin material, which will be described later, among various pigments, so that the dispersion stability (long-term storage) of the pigment in the ink is particularly excellent. Drop ejection can be performed more smoothly over a longer period of time. Specific examples of such a pigment include Fastgen Blue GR6HS (manufactured by DIC, CI Pigment Blue 15: 3), Chromofine Blue 5208 (manufactured by Dainichi Seika Co., Ltd., CI Pigment Blue 15: 2), Fastgen Super Blue 6070S (manufactured by DIC, CI Pigment Blue 60) and the like.

  As the colorant constituting the ink 2 used for forming the reddish purple (magenta) colored portion 12E, a pigment having a dioxazine structure, a dimethylquinacridone structure, a methylquinacridone structure, or a quinacridone structure is preferably used. When such a pigment is included, the color gamut of the color filter 1 can be made particularly wide. In addition, since such a pigment is particularly excellent in affinity with a resin material described later among various pigments, the dispersion stability (long-term storage property) of the pigment in the ink is particularly excellent. The discharge can be performed more smoothly over a longer period. Specific examples of such pigments include Lionogen Red Violet L5100 (Toyo Ink, CI Pigment Violet 19), Lionogen Magenda R (Toyo Ink, CI Pigment Red 122), Chromophoto Violet B (CSC, CI Pigment Violet 37) and the like.

  Further, as the colorant constituting the ink 2 used for forming the yellow colored portion 12F, a pigment having an azomethine structure, an isoindolinone structure, or a quinophthalone structure is preferably used. When such a pigment is included, the color gamut of the color filter 1 can be made particularly wide. In addition, since such a pigment is particularly excellent in affinity with a resin material described later among various pigments, the dispersion stability (long-term storage property) of the pigment in the ink is particularly excellent. The discharge can be performed more smoothly over a longer period. Specific examples of such pigments include Byplast Yellow E-4GN (manufactured by Lanxess, CI Pigment Yellow 150), Paliotol Yellow K0961HD (manufactured by BASF, CI Pigment Yellow 138), Paliotol Yellow D1819 ( And CI Pigment Yellow 139) manufactured by BASF Corporation.

  The content of the colorant in the color filter ink 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 pigment is within the above range, a higher color density can be secured in the produced color filter, and the pigment can be used for clearer image display. Further, the amount of color filter ink required to form a colored portion having a predetermined color density can be reduced, which is advantageous from the viewpoint of resource saving. Moreover, since the volatilization amount of the liquid medium when forming the colored portion 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.

  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 (the total of these contents when a plurality of compounds are included as the liquid medium) is preferably 50 wt% or more and 98 wt% or less, and 60 wt%. It is more preferably 95 wt% or less and even more preferably 65 wt% or more and 93 wt% or less. When the content of the liquid medium is a value within the above range, the color filter ink is excellent in the discharge property from the droplet discharge head, and the manufactured color filter has excellent durability. can do. In addition, a sufficient color density can be ensured in the manufactured color filter.

[Resin material]
The color filter ink contains a resin material (binder resin) for the purpose of improving the adhesion of the formed colored portion to the substrate.
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 discharge stability of the color filter ink, the storage stability of the color filter ink, etc. can be made particularly excellent, and the 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 addition, the colored portion formed using the color filter ink is particularly excellent in flatness, and the contrast ratio and brightness of the manufactured color filter can be particularly improved. Further, the durability of the color filter 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 Prevents unintentional precipitation of resin material in the ink for ink, enables droplet discharge with excellent discharge stability, and fully exhibits the characteristics of each resin component in the formed colored part It is possible to reliably prevent the occurrence of problems such as a decrease in transparency due to unintended phase separation. In addition, the long-term storage stability of the color filter ink (the life of the color filter ink) is extremely excellent, and it effectively prevents the occurrence of problems such as quality degradation due to the mass production of color filter ink. In addition, since the replacement frequency of the color filter ink can be reduced when manufacturing the color filter, the productivity of the color filter and the reliability of the manufactured color filter can be improved.
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 including such a monomer component m1 as a monomer component in the polymer M, an unintentional reaction (polymerization reaction) of the resin material at the time of storage of the color filter ink or at the time of droplet discharge or the like. In the curing treatment performed in a heating environment while reliably preventing, the curing reaction (polymerization reaction) of the resin material can be suitably proceeded. 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. While the group contributes to curing and can improve adhesion to the substrate, heat resistance, chemical resistance, etc., when a relatively low energy is applied, deblocking as described above proceeds. Therefore, 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, it is possible to improve the wetting and spreading of the color filter ink onto the substrate, and the incorporation of bubbles and the like A colored portion that is reliably prevented and has excellent adhesion to the substrate can be suitably formed. Further, by containing the monomer component m2 as a monomer component, the long-term storage stability of the color filter ink 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 may contain a plurality of monomer components m3 represented by the general formula (3) in the molecule.

  By containing such a monomer component m3 as a monomer component in the polymer M, the flatness of the colored portion formed using the color filter ink can be made high. Further, by containing the monomer component m3 as a monomer component in the polymer M, the discharge stability of the color filter ink can be made excellent. 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 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 m1 [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.

The polymer M contains the monomer component m4, so that the resin material in the color filter ink has excellent solubility even when the liquid medium constituting the color filter ink is highly hydrophilic. The transparency of the colored portion formed using the color filter ink 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 can be made particularly excellent. In addition, the colored portion formed using the color filter ink is particularly excellent in transparency (a reduction in light transmittance due to the opacity of the resin material is more effectively prevented), and particularly excellent in adhesion to the substrate, 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 can be made particularly excellent. Moreover, the hardening reaction of the resin material at the time of colored part formation can be advanced more suitably.

  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.
By including the monomer component m7 in the polymer M, it is possible to further improve the hardness of the colored portion formed using the color filter ink, the adhesion to the substrate, and the like.

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 contains the monomer component m7 as described above, a 3- to 5-membered cyclic ether group (oxirane ring (epoxy group), oxetane ring (oxetanyl group), oxolane The 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 manufactured using the color filter ink can be made particularly excellent, and the durability of the color filter can be made particularly excellent. In addition, the storage stability (long-term stability), ejection stability, hardness of the formed colored portion, and the like 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 color filter ink is preferably less 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 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 solvent property of the colored portion formed using the color filter ink is particularly improved while sufficiently improving the switching characteristics of the curing reaction as the entire resin material. It can be excellent, and the flatness of the surface of the colored portion to be formed can be particularly high. As a result, it is possible to more reliably prevent the occurrence of uneven color and the decrease in contrast at each part of the color filter manufactured using the color filter ink, and the durability and reliability of the color filter are particularly excellent. Can be. In addition, by including the polymer X, the affinity and compatibility of each polymer component in the color filter ink (particularly, the affinity and compatibility of the polymer X with the polymer M and polymer Y). Since it can be made sufficiently excellent, the colored portion formed by using the color filter ink with excellent discharge stability of the color filter ink while fully exhibiting the features of the polymer X The transparency can be 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 at the time of storage of the color filter ink or at the time of droplet discharge is reliably prevented. In the curing treatment performed in a heating environment, the curing reaction (polymerization reaction) of the resin material can be caused to proceed more suitably. 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 can be improved. Moreover, the hardness etc. of the colored part formed 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 a color filter 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 (particularly, together with the monomer component x1 described above and the monomer component x3 described in detail later), the color filter ink can be stored. The curing reaction (polymerization reaction) of the resin material proceeds more suitably in the curing process performed in a heating environment while reliably preventing unintentional reaction (polymerization reaction) of the resin material during discharge or droplet discharge. Can be made. 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 containing the monomer component x2 as the monomer component, the hardness of the colored portion to be formed 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. In addition, the reactivity of the polymer X at a relatively low temperature increases, and the storage stability of the color filter ink 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 the monomer component, the chemical resistance, solvent resistance, and the like of the colored portion to be formed can be made particularly excellent. 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. Therefore, the curing reaction of the resin material in the curing process performed in a heated environment while reliably preventing the unintentional reaction (polymerization reaction) of the resin material during storage of the color filter ink or droplet discharge. (Polymerization reaction) can be suitably advanced.
Further, by containing the monomer component x3 as the monomer component, for example, the long-term storage stability and ejection stability of the color filter ink 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, the colored portion formed using the color filter ink becomes too hard, and the tendency to follow the deformation of the substrate or the like accompanying a temperature change 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 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.
By containing such a monomer component x4 as a monomer component, the solid content concentration is increased when the liquid medium is removed from the color filter ink applied on the substrate during the formation of the colored portion. As a result, the thixotropic property and viscosity of the color filter ink are increased, and it is possible to more reliably prevent the occurrence of unintended irregularities on the surface of the formed colored portion.

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 curing reaction of the resin material is ensured in a curing process performed in a heated environment while reliably preventing unintentional reaction (polymerization reaction) of the resin material during storage of color filter ink or droplet discharge. (Polymerization reaction) can proceed more suitably.
Further, by containing the monomer component x4 as the monomer component, for example, the long-term storage stability and ejection stability of the color filter ink 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 colored part formed using the ink 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. As a result, it is possible to make the color filter ink stable over time (long-term storage stability), the discharge stability of the color filter ink, and the color filter productivity sufficiently. Furthermore, the flatness of the colored portion formed using the color filter ink can be made more reliable, and the occurrence of color unevenness in the image displayed using the color filter can be more effectively achieved. Can be 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 of the colored portion formed using the color filter ink to the substrate is particularly excellent while the discharge stability of the color filter ink is excellent. The durability and reliability of the manufactured color filter 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 the monomer component, the adhesion of the formed colored portion to the substrate can be made particularly excellent. As a result, the durability of the color filter 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. In addition, when the colored portion is formed, when the liquid medium is removed from the color filter ink applied on the substrate, the viscosity of the color filter ink tends to increase with an increase in the solid content concentration. Involuntary unevenness is likely to occur on the surface of the colored portion. 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), a resin material at the time of storage of color filter ink or at the time of droplet discharge, etc. In the curing treatment performed in a heating environment, the unintentional reaction (polymerization reaction) can be more reliably prevented, and the curing reaction (polymerization reaction) of the resin material can be suitably 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. Moreover, the hardness etc. of the colored part formed 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 contains a resin component other than the polymer Y, as a result, the discharge stability of the color filter ink can be improved, and the color filter ink The colored portion formed using is excellent in transparency (a reduction in light transmittance due to the opacity of the resin material is prevented), particularly excellent in adhesion to the substrate, and is less prone to problems such as cracks. 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 is inferior in ejection stability, and the produced color filter is liable to cause uneven color, contrast, durability and reliability. It may be difficult to make the properties 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. In addition, the reactivity of the polymer Y at a relatively low temperature increases, and the storage stability of the color filter ink 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. As a result, it is possible to make the color filter ink stable over time (long-term storage stability), the discharge stability of the color filter ink, and the color filter productivity sufficiently. Furthermore, the flatness of the colored portion formed using the color filter ink can be made more reliable, and the occurrence of color unevenness in the image displayed using the color filter can be more effectively achieved. Can be 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 content of the resin material in the color filter ink 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 and 12 wt%. % Or less is more preferable.

When the color filter ink contains a pigment as a colorant, the content of the resin material in the color filter ink is C _R [wt%], and the content of the pigment in the color filter ink is C _P [wt %], It is preferable to satisfy the relationship of 0.2 ≦ _CR / _CP ≦ 9.0, and it is more preferable to satisfy the relationship of 0.3 ≦ _CR / _CP ≦ 5.0. More preferably, the relationship 0.4 ≦ C _R / C _P ≦ 3.5 is satisfied. By satisfying such a relationship, the contrast of the produced color filter can be improved, and sufficient contrast is ensured even when the thickness of the colored part is made thinner. can do.
The resin material constituting the color filter ink may contain a polymer other than those described above.

[Other ingredients]
The color filter ink may contain components other than the 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 smoothes the surface of the color filter ink applied in the cell and lowers the colored portion by reducing the surface tension of the color filter ink. For this reason, when the color filter ink 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 in the cell can be made flatter. For this reason, the colored part to be formed becomes flatter.

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

The antioxidant can prevent deterioration of the color filter ink due to oxidation or the like, and can prevent deterioration of the colorant or resin material due to heat, light, or the like in the colored portion formed by the color filter ink.
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 suitably prevents the color filter ink and the colored portion from deteriorating effectively, and does not affect the optical properties such as color, brightness, and contrast ratio in the formed colored portion. is there.

  The viscosity at 25 ° C. of the color filter ink (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. The following is more preferable. When the viscosity of the color filter ink is within the above range, clogging in the droplet discharge head is performed while the variation in the appropriate amount of the color filter ink to be discharged is particularly small in droplet discharge by the inkjet method. Occurrence and the like can be prevented more reliably. The viscosity of the color filter ink can be measured using, for example, a vibration viscometer, and can be performed in particular in accordance with JIS Z8809.

"Color filter"
Next, the color filter of the present invention will be described.
The color filter of the present invention has a plurality of colored portions formed by an inkjet method, and a colored portion formed using a sheet material made of a material containing a colorant and a photosensitive resin. The colored portions of different colors formed by the above are arranged so as not to be adjacent to each other.

In particular, the color filter 1 of the present embodiment has a configuration in which a colored portion 12 (12A, 12B, 12C, 12D, 12E, 12F) of six colors and a light shielding portion 13 are provided on one surface side of the substrate 11. It is what you have.
One set of colored portions 12A, 12B, 12C, 12D, 12E, and 12F having different colors constitutes one pixel. In the color filter 1, a predetermined number of colored portions 12 are arranged in the horizontal direction and the vertical direction. For example, when the color filter 1 is a high-definition color filter, 1366 × 768 pixels are arranged, and when the color filter 1 is a full high-definition color filter, 1920 × 1080 pixels are arranged. In the case of a super high vision color filter, 7680 × 4320 pixels are arranged. Note that the color filter 1 may be provided with a spare pixel outside the effective pixel region, for example.
Such a color filter 1 effectively prevents color unevenness and has excellent durability.

<Image display device>
Next, a preferred embodiment of a liquid crystal display device that is an image display device (electro-optical device) having the color filter 1 will be described.
FIG. 6 is a cross-sectional view showing a preferred embodiment of the liquid crystal display device. As shown in the figure, the liquid crystal display device 60 includes a color filter 1, a substrate (opposite substrate) 66 disposed on the side of the color filter 1 on which the colored portion 12 is provided, a color filter 1 and a substrate 66. And a polarizing plate 67 provided on the surface of the color filter 1 opposite to the surface facing the liquid crystal layer 62 (lower side in FIG. 6). And a polarizing plate 68 provided on the surface side opposite to the surface facing the liquid crystal layer 62 of the substrate 66 (upper side in FIG. 6). 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. 6). 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. 6).
Since the liquid crystal display device 60 includes the color filter 1 as described above, it is possible to stably display an excellent image in which occurrence of color unevenness is effectively prevented over a long period of time.

"Electronics"
An image display device (electro-optical device) 1000 such as a liquid crystal display device having the color filter 1 as described above can be used for display portions of various electronic devices.
FIG. 7 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. 8 is a perspective view showing a configuration of a mobile phone (including PHS) to which the electronic apparatus of the 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. 9 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 these.
For example, in the above-described embodiment, after the color filter inks corresponding to the three colored portions are applied to the cells in the second colored portion forming step, the color filter inks for the respective colors in the cells are collectively collected. In the above description, the liquid medium is removed and the curable resin is cured, that is, the curing process is performed only once. However, the ink application and the curing process are repeated for each color. May be.

  In the above-described embodiment, the case where the red colored portion, the green colored portion, and the blue colored portion are formed in this order in the first colored portion forming step is representatively described. The order of forming the parts is not limited to this. In addition, the color of the colored portion formed in the first colored portion forming step is not limited to that described above. In the present invention, the color filter includes a colored portion (colored portion formed in the first colored portion forming step) formed using a sheet material made of a material containing a colorant and a photosensitive resin. It is sufficient that at least one color is provided.

In the above-described embodiment, the second colored portion forming step is described as forming the cyan colored portion, the magenta colored portion, and the yellow colored portion. In the present invention, the color of the colored portion formed in the second colored portion forming step is not limited to that described above. In the present invention, the color filter only needs to include at least two colors of colored portions (colored portions formed in the second colored portion forming step) formed by an inkjet method.
Moreover, although embodiment mentioned above demonstrated the case where a 2nd colored part formation process was performed after a 1st colored part formation process, you may change the order of these processes. For example, when manufacturing a color filter as what has a light-shielding part, a 2nd colored part formation process may be performed after a light-shielding part formation process, and also a 1st colored part formation process may be performed after that.

  Further, the color filter of the present invention has a plurality of colored portions formed by an inkjet method, and a colored portion formed using a sheet material made of a material containing a colorant and a photosensitive resin, What is necessary is just to be arrange | positioned so that the colored part of the different color formed by the inkjet method may not mutually adjoin, and it is not limited to what was manufactured by the method as mentioned above.

Further, the arrangement of the colored portions of the respective colors is not limited to the configuration shown in the drawing.
In the embodiment described above, the color filter has been described as having six (six colors) colored portions. However, even if the color filter has five or less colored portions, seven or more colored portions are included. You may have.
In addition, each unit constituting the color filter, the image display device, and the electronic device can be replaced with an arbitrary one that exhibits the same function, or another configuration can be added. For example, in the color filter of the present invention, a protective film that covers the colored portion may be provided on the surface of the colored portion opposite to the surface facing the substrate. Thereby, damage, deterioration, etc. of a coloring part can be prevented more effectively.

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 (G5 size: 1100 × 1300 mm) on which a silica (SiO ₂ ) film for preventing elution of sodium ions was formed on both surfaces was prepared and subjected to a cleaning treatment.

  Next, by sticking a sheet material made of a material containing a colorant and a photosensitive resin to one surface of the substrate, and then repeating the exposure and development process, the red colored portion, green The colored portion and the blue colored portion were formed in this order (see (1b) to (1g) in FIGS. 1 to 4).

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 colored portion, as a colorant, C.I. I. Pigment Red 177 and a pigment derivative represented by the above formula (30); I. A mixture containing Pigment Red 254 and a pigment derivative represented by the above formula (31) and a sulfonated pigment derivative powder having a chemical structure represented by the following formula (34) was used.

Further, as a sheet material for forming a green colored portion, as a colorant, C.I. I. A pigment green 58 powder and a sulfonated pigment derivative powder having a chemical structure represented by the above formula (34) were used.
Further, as a sheet material for forming a blue colored portion, as a colorant, C.I. I. Pigment Blue 15: 6 powder and C.I. I. Pigment Violet 23 powder was used.
The thickness of the red colored portion, the thickness of the green colored portion, and the thickness of the blue colored portion formed in this step were all 2.0 μm.

Next, a liquid radiation-sensitive composition for forming a light-shielding portion containing carbon black is applied to the entire surface of the substrate on which the red colored portion, the green colored portion, and the blue colored portion are formed. (See (1h) in FIGS. 2 and 4).
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 (partition) was formed by performing the development process using an alkali developing solution, and also performing the post-baking process (refer FIG. 2 and (1i) of FIG. 4). 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 2.0 μm.

  Next, by using a droplet discharge device as shown in FIG. 5, a cyan-colored colored portion is formed in a cell (region surrounded by the light-shielding portion) of the substrate provided with the light-shielding portion (partition wall). Ink, magenta colored portion forming ink, and yellow colored portion forming ink were ejected in a predetermined pattern (see (1j) in FIGS. 2 and 4). In each cell, the color filter ink was applied in such an amount that the average thickness of the colored portion to be formed was 2.0 μm.

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 in an oven at 240 ° C. for 50 minutes (second heat treatment), and thereafter, washing with N-methyl-2-pyrrolidone and γ-butyrolactone was performed, so that ( A color filter as shown in 1k) was obtained. A total of 10 color filters were obtained using the same method.

(Examples 2 to 10)
Tables 2 and 3 show the types of colorants contained in the sheet material used in the first colored portion forming step, the composition of the color filter ink used in the second colored portion forming step, and the arrangement of the colored portions of each color. Except for the above, ten color filters were produced in the same manner as in Example 1.

(Comparative Example 1)
Ten color filters were manufactured in the same manner as in Example 8 except that all of the six colored portions were formed in the first colored portion forming step and the second colored portion forming step was omitted. In this comparative example, the red colored part, the green colored part, the blue colored part, the cyan colored part, the magenta colored part, and the yellow colored part are arranged in this order. Formed with.

(Comparative Example 2)
Ten color filters were manufactured in the same manner as in Example 8 except that the first colored portion forming step was omitted and all the six colored portions were formed in the second colored portion forming step.
(Comparative Example 3)
Ten color filters were manufactured in the same manner as in Example 8 except that the arrangement of the colored portions of each color was as shown in FIG. In FIG. 11, the red colored portion is R, the green colored portion is G, the blue colored portion is B, the indigo purple (cyan) colored portion is C, and the reddish purple (magenta) colored portion is M, yellow. The colored part of (yellow) is indicated by Y.

  About each said Example and each comparative example, the composition of the sheet material used at the 1st coloring part formation process, the composition of the color filter ink used at the 2nd coloring part formation process, and arrangement | positioning of the coloring part of each color are represented. 2 and Table 3 collectively. In the table, Fastgen Blue GR6HS (manufactured by DIC) is “GR6HS”, Lionogen Red Violet L5100 (manufactured by Toyo Ink) is “L5100”, and Bypass Yellow E-4GN (manufactured by Lanxess) is “E-4GN”. Chromofine Blue 5208 (manufactured by Dainichi Seika Co., Ltd.) is “5208”, Fastgen Super Blue 6070S (manufactured by DIC) is “6070S”, Lionogen Magenda R (manufactured by Toyo Ink Co., Ltd.) is “LMR”, and ChromophalBSC ) “CVB”, Pariotoleol K0961HD (BASF) made “K0961HD”, Paliotool Yellow D1819 (BASF) “D1819”, a resin (trade name: YL6810, manufactured by Japan Epoxy Resin Co., Ltd.) as a photo-curable resin, “PCR”, 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 the pigment derivative represented by the formula (31), and a powder composed of the pigment derivative (one sulfo group in the molecule) represented by the above 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 “D1”, Dispersic 2095 is “D2”, Dispersic P104 is “D3”, Dispersic 166 is “D4”, Dispersic 9075 is “D5”, Dispersic 2001 is “D6”, 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 “S4”, ethyl octoate “S5”, diethylene glycol mononormal butyl ether “S6”, triethylene glycol mononormal butyl ether “S7”, ethyl 3-ethoxypropionate It is shown by the "S8". Also, in the column of the colored portion arrangement in the table, “F4” is the arrangement as shown in FIG. 4 (1k), “F10” is the arrangement as shown in FIG. 10, and FIG. Such an arrangement was indicated as “F11”. Further, in the table, the sheet material for forming the red colored portion is “R sheet”, the sheet material for forming the green colored portion is “G sheet”, the sheet material for forming the blue colored portion is “B sheet”, The ink for forming the colored portion of cyan (color filter) is “C ink”, the ink for forming the colored portion of magenta (color filter ink) is “M ink”, yellow ( Yellow) colored portion forming ink (color filter ink) is “Y ink”, red colored portion forming ink (color filter ink) is “R ink”, and green colored portion forming ink ( (Color filter ink) is “G ink”, blue colored portion forming ink (color filter ink) is “B ink”, indigo purple (cyan) colored portion forming sheet material is “C sheet”, Crimson ( The sheet material for formation of the colored portion of the presenter) "M sheet", and the sheet material for formation of the colored portion of the yellow (Yellow) shown as "Y sheet". In the tables, “parts” of content indicates parts by weight. In addition, C. used in each Example and each comparative 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. In addition, C.I. used in each of the above examples and comparative 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] Evaluation of color filter [3.1] Occurrence of color unevenness The following evaluation was performed using each color filter obtained as described above.
A liquid crystal display device as shown in FIG. 6 was manufactured under the same conditions using the color filter manufactured in each of the above Examples and Comparative Examples. A cold cathode tube having a color temperature of 11000K was used as the light source.
These liquid crystal display devices are visually observed in a dark room with red single color display, green single color display, blue single color display, cyan single color display, magenta single color display, yellow single color display, and white single color display. The occurrence of color unevenness at each part was evaluated according to the following five-stage criteria.

A: Color unevenness is not recognized at all.
B: Color unevenness is hardly recognized.
C: Color unevenness is slightly observed.
D: Uneven color is clearly recognized.
E: Color unevenness is noticeable.

[3.2] Evaluation of contrast ratio All color display (image display in the entire pixel effective area) is performed using the liquid crystal display devices of the respective examples and comparative examples manufactured in [3.1], and the luminous intensity Using a meter (manufactured by PHOTO RESEARCH, PR-800), a contrast ratio (CR) as compared with the case where color display was not performed was obtained and evaluated according to the following five-stage criteria.

A: CR is 18000 or more.
B: CR is 16000 or more and less than 18000.
C: CR is 13,000 or more and less than 16000.
D: CR is 10,000 or more and less than 13,000.
E: CR is less than 10,000.

[3.3] Lightness Evaluation The liquid crystal display devices of the above Examples and Comparative Examples used in the evaluation of [3.2] were evaluated as shown below. For the liquid crystal display device, each color is displayed in a single color, and tristimulus values are obtained by the xyY colorimetric method using a chromaticity meter (manufactured by Minolta, CM-3700d, using C light source as the light source) as follows. Evaluation was performed.
That is, for the single color display of red, the Y value when x = 0.651 was evaluated according to the following five-step criteria.

A: Brightness Y is 21.1 or more.
B: Lightness Y is 20.6 or more and less than 21.1.
C: Brightness Y is 20.0 or more and less than 20.6.
D: Brightness Y is 18.1 or more and less than 20.0.
E: Lightness Y is less than 18.1.

In addition, for the monochrome display of green, the Y value when y = 0.600 was evaluated according to the following five-stage criteria.
A: Brightness Y is 57.1 or more.
B: Brightness Y is 55.4 or more and less than 57.1.
C: Brightness Y is 53.4 or more and less than 55.4.
D: Brightness Y is 51.1 or more and less than 53.4.
E: Lightness Y is less than 51.1.

For the blue single color display, the Y value when y = 0.141 was evaluated according to the following five-step criteria.
A: Brightness Y is 11.9 or more.
B: Lightness Y is 11.6 or more and less than 11.9.
C: Brightness Y is 10.9 or more and less than 11.6.
D: Brightness Y is 10.1 or more and less than 10.9.
E: Lightness Y is less than 10.1.

For the monochrome display of cyan-purple (cyan), the Y value when y = 0.30 was evaluated according to the following five criteria.
A: Brightness Y is 19.1 or more.
B: The brightness Y is 18.1 or more and less than 19.1.
C: Brightness Y is 17.1 or more and less than 18.1.
D: Brightness Y is 16.1 or more and less than 17.1.
E: Lightness Y is less than 16.1.

In addition, for the single color display of reddish purple (magenta), the Y value when y = 0.10 was evaluated according to the following five criteria.
A: Brightness Y is 29.1 or more.
B: Brightness Y is 28.1 or more and less than 29.1.
C: Brightness Y is 27.1 or more and less than 28.1.
D: Brightness Y is 26.1 or more and less than 27.1.
E: Lightness Y is less than 26.1.

For yellow (yellow) single color display, the Y value when y = 0.55 was evaluated according to the following five criteria.
A: Brightness Y is 75.1 or more.
B: Brightness Y is 74.1 or more and less than 75.1.
C: Brightness Y is 73.1 or more and less than 74.1.
D: Brightness Y is 72.1 or more and less than 73.1.
E: Lightness Y is less than 72.1.

[3.4] Evaluation of Adhesiveness of Colored Part The color filter was removed from the liquid crystal display devices of the Examples and Comparative Examples used in the evaluation of [3.3].
Each removed color filter was placed in a 20 ° C. environment for 1.5 hours, then in a 75 ° C. environment in 2.5 hours, then in a 20 ° C. environment in 1.5 hours, and then −15 ° C. It was left in the environment for 2.5 hours. Thereafter, the environmental temperature was returned again to 20 ° C., which was set as one cycle (8 hours), and this cycle was repeated a total of 10 times (total of 80 hours).
Thereafter, a liquid crystal display device as shown in FIG. 6 was again assembled using these color filters.

Using these liquid crystal display devices, visual observation is performed in a dark room with red single color display, green single color display, and blue single color display, and the occurrence of light leakage (white spots, bright spots) is observed. The evaluation was made according to the following 6-step criteria.
A: There is no color filter in which light leakage (white spots, bright spots) occurs.
B: Light leakage (white spots, bright spots) is observed in one or two color filters.
C: Light leakage (white spots, bright spots) is observed in 3 to 4 color filters.
D: Light leakage (white spots, bright spots) is observed in 5 to 7 color filters.
E: Light leakage (white spots, bright spots) is observed in 8 to 9 color filters.
F: Light leakage (white spots, bright spots) is observed in 10 color filters.
These results are shown in Table 4.

As is clear from Table 4, the present invention yielded excellent results, while the comparative example did not yield satisfactory results.
In the present invention, the productivity of the color filter could be made sufficiently excellent, whereas in Comparative Example 1, the productivity of the color filter was inferior.
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.
Further, when a commercially available liquid crystal television was disassembled and the liquid crystal display device part was replaced with one manufactured as described above, and the same evaluation as described above was performed, the same result as above was obtained.

  DESCRIPTION OF SYMBOLS 1 ... Color filter 11 ... Board | substrate 12, 12A, 12B, 12C, 12D, 12E, 12F ... Colored part 12A ', 12B', 12C '... Sheet material 13 ... Light-shielding part (partition wall) 14 ... Cell 2 ... Color filter ink DESCRIPTION OF SYMBOLS 3 ... Coating film 60 ... Liquid crystal display device 61 ... Common electrode 62 ... Liquid crystal layer 63, 64 ... Orientation film 65 ... Pixel electrode 66 ... Substrate (opposite substrate) 67, 68 ... Polarizing plate 100 ... Droplet discharge device 101 ... Tank 102 DESCRIPTION OF SYMBOLS ... Discharge scanning part 103 ... Droplet discharge means 104 ... 1st position control apparatus (moving means) 106 ... Stage 108 ... 2nd position control apparatus (moving means) 110 ... Tube 112 ... Control means 1000 ... Image display apparatus 1100 ... Personal Computer 1102 ... Keyboard 1104 ... Main body 1106 ... Display unit 1200 ... Mobile Band telephone 1202 ... operation button 1204 ... earpiece 1206 ... mouthpiece 1300 ... digital still camera 1302 ... case (body) 1304 ... light receiving unit 1306 ... shutter button 1308 ... circuit board 1312 ... video signal output terminal 1314 ... for data communication Input / output terminal 1430 ... TV monitor 1440 ... Personal computer

Claims (12)

A method for producing a color filter having a plurality of colored portions,
A substrate preparation process for preparing a substrate;
A first colored part forming step of forming a colored part by sticking a sheet material composed of a material containing a colorant and a photosensitive resin on the substrate, and then exposing and developing;
A second colored portion forming step of applying ink on the substrate by an inkjet method to form a colored portion of a plurality of colors;
A method for producing a color filter, wherein the colored portion forming regions of different colors formed in the second colored portion forming step are arranged so as not to be adjacent to each other.   The method for producing a color filter according to claim 1, further comprising a light shielding part forming step of forming a light shielding part.   The light shielding portion forming step is performed between the first colored portion forming step and the second colored portion forming step, and is performed by a photolithography method using a liquid composition. 2. A method for producing a color filter according to 2. Forming a colored portion of a plurality of colors in the first colored portion forming step;
When the substrate is viewed in plan, each colored portion has a polygonal shape, and each colored portion formed in the first colored portion forming step excludes the outer peripheral portion of the effective pixel region. 4. In any one of the above-described regions, the three or more sides are arranged so as to be adjacent to the colored portion of the same color or the colored portion formed in the second colored portion forming step. The manufacturing method of the color filter of description. In the first colored portion forming step, a red colored portion, a green colored portion and a blue colored portion are formed,
5. The color according to claim 1, wherein, in the second colored portion forming step, a cyan colored portion, a magenta colored portion, and a yellow colored portion are formed. Manufacturing method of the filter. The ink used in the second colored portion 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).

As the resin material, the ink used in the second colored portion forming step is 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 coloring part 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.

  A color filter manufactured using the method according to claim 1. A color filter provided with a plurality of colored portions on a substrate,
As the plurality of colored portions, a plurality of colored portions formed by an inkjet method, and a colored portion formed using a sheet material made of a material containing a colorant and a photosensitive resin,
A color filter, wherein colored portions of different colors formed by the inkjet method are arranged so as not to be adjacent to each other.   An image display device comprising the color filter according to claim 9.   An electronic apparatus comprising the image display device according to claim 11.

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