TW201807438A - Method for producing color filter - Google Patents

Abstract

Provided is a method for producing a color filter that is effective for better picture quality. This method for producing a color filter sequentially comprises a step for forming a first color pattern corresponding to a first color with use of a first coloring composition, a step for forming a second color pattern corresponding to a second color with use of a second coloring composition, and a step for forming a third color pattern corresponding to a third color with use of a third coloring composition, in this order. The third color is red or green; and the third coloring composition contains a polymerizable compound and a coloring agent that contains a dye. A color filter 1, which is effective for better picture quality, is produced using this method for producing a color filter.

Description

Manufacturing method of color filter

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

In recent years, thin, light-weight and high-quality display elements have been demanded. For example, the development of liquid crystal display elements has been vigorously carried out. In order to achieve high-quality color display, a color filter can be used for display elements such as liquid crystal display elements.

When manufacturing a color filter for a display element, a coloring composition prepared with a colorant can be used. In this case, for example, in order to manufacture color filters corresponding to the three primary colors of red, green, and blue, a red coloring composition containing a red coloring agent, a green coloring composition containing a green coloring agent, and a blue coloring are prepared. 3 kinds of colored composition of the blue colored composition of the agent.

Then, using the three types of coloring composition described above, the coloring patterns of the three primary colors of red, green, and blue are sequentially formed, and they are hardened to form a red filter, a green filter, and a blue filter. The formed red filter, green filter, and blue filter constitute a color filter corresponding to the three primary colors.

In this case, for example, a red colored composition is initially used among the three types of colored compositions described above. That is, a red coloring composition is applied to a substrate and dried, and then the dried coating film is applied in a desired pattern. The shape is irradiated with radiation (hereinafter referred to as "exposure"), and a red colored pattern can be formed by developing.

Next, the green coloring composition is used to perform the same steps of coating, drying, exposure, and development as described above to form a green coloring pattern, and then the blue coloring composition is used to perform the same coating, drying, exposure, and Each step of development can form a blue colored pattern.

That is, in the manufacture of a color filter, three types of coloring compositions including a red coloring composition, a green coloring composition, and a blue coloring composition are used, and the same coating, drying, exposure, and development are repeated for each coloring composition. In each step of the image, a coloring pattern of three primary colors of red, green, and blue is sequentially formed. Then, they are hardened to form a red filter, a green filter, and a blue filter, and a color filter corresponding to the three primary colors of red, green, and blue is manufactured. Thereby, in a display element having the color filter, pixels of each color including a filter of any of red, green, and blue colors can be obtained (Patent Documents 1 to 2).

In addition, in the manufacture of the above-mentioned color filter, after forming a coloring pattern of one color, and before forming a coloring pattern of another color, the coloring pattern of the one color may be hardened to form the one color. Filter. That is, filters for each color may be sequentially formed corresponding to those in which the colored patterns are sequentially formed.

A method of forming a black matrix using a photopolymerizable composition in which carbon black is dispersed is also known in the manufacture of color filters (Patent Document 3).

In the manufacture of color filters, pigments can be used as colorants. That is, in the production of a color filter, a pigment-dispersed coloring composition can be used.

Recently, the demand for higher image quality of display elements has been increasing. For color filters included in pixels, performances such as brightness and color purity are also strongly demanded. In addition, as a means for improving the image quality of a display element, the use of a dye in a color filter coloring agent is examined (Patent Document 4). A person using a dye as a colorant is a means for improving image quality such as high brightness and high color purity.

Prior art literature Patent literature

Patent Document 1 Japanese Unexamined Patent Publication No. 2-144502

Patent Document 2 Japanese Unexamined Patent Publication No. 3-52201

Patent Document 3 Japanese Patent Application Laid-Open No. 2005-99584

Patent Document 4 Japanese Patent Application Publication No. 2012-212109

However, it is known that there are many dye-based heat-resistant materials compared with pigments. Therefore, in a coloring pattern formed using a coloring composition containing a dye, compared with a coloring pattern using a coloring composition containing a pigment, heat resistance may be inferior. As a result, a so-called "heat resistance" occurs in a color filter. Sex ". For example, in a method for manufacturing a color filter, when a dye is included in a colored pattern, the dye is gradually deteriorated in the stage where the colored pattern of each color is sequentially formed, causing deterioration of the color characteristics of the colored pattern or the filter. Will reduce the quality of the color filter.

When a color filter using a dye is used as a colorant, a so-called "migration" problem occurs in the manufacturing process thereof. That is, in the stage of sequentially forming the colored pattern of each color in the manufacture of the color filter, the dye is dissolved from the colored pattern of the previously formed pixel, and the colored pattern of the pixel formed later is dyed to transfer the dye. Or, the dye contained in the coloring pattern of the pixel formed later is used to dye the coloring pattern of the pixel formed first to transfer the dye.

The transfer dyeing in such a color filter is in a color filter or a display element using the color filter, which may reduce the brightness or color purity of pixels.

In addition, as a dye for a coloring agent of a color filter, a fluorescent dye having fluorescent properties may be used. Since the fluorescence of fluorescent dyes is the main reason for reducing the contrast of pixels, when using fluorescent dyes, a matting agent is used together.

However, in the case of a color filter using a dye and a matting agent, in the manufacturing steps thereof, especially in the manufacturing stage of sequentially forming the colored patterns of each color, the matting agent is dissolved out from the colored pattern of the previously formed pixels, The coloring pattern of the pixel formed after the pollution, or the dye contained in the coloring pattern of the pixel formed after the pollution, stains the coloring pattern of the pixel formed before. The contamination of the colored pattern caused by such a matting agent reduces the pixel contrast of a display element including a filter formed by the colored pattern.

According to the above, it is required to use a dye as a coloring agent, and on the one hand, to improve the heat resistance or migration problems, and to realize high-quality color of display elements such as high brightness, high color purity, and high contrast Filter technology. More specifically, it is required to use a dye for the colorant to improve the heat resistance or the problem of migration, and to realize a high-quality color filter for display elements such as high brightness, high color purity, and high contrast. In addition, it is required to use a dye for the colorant to improve the problems of heat resistance and migration, and a method for manufacturing a color filter capable of realizing high-quality display elements such as high brightness, high color purity, and high contrast.

Therefore, an object of the present invention is to provide a method for manufacturing a color filter effective for improving the image quality.

The inventors intensively reviewed and found that in the manufacture of color filters, a coloring composition containing a dye is used in the formation of a coloring pattern, and the coloring pattern of each color is sequentially formed. The order of the formation of the colored patterns effectively solves the above problems.

One aspect of the present invention relates to a method for manufacturing a color filter, which is a method for manufacturing a color filter having at least three colors, which sequentially includes: using a first coloring composition to form a color filter corresponding to the first color A step of a first coloring pattern; a step of using a second coloring composition to form a second coloring pattern corresponding to the second color; and a step of using a third coloring composition to form a third coloring pattern corresponding to the third color; The third color is red or green, and the third coloring composition contains a coloring agent containing a dye and a polymerizable compound.

In one aspect of the present invention, the dye contained in the third coloring composition is preferably a fluorescent dye.

In one aspect of the present invention, it is preferable that the dye contained in the third coloring composition is selected from the group consisting of coumarin dye, styryl dye, At least one of the group consisting of a dye (xanthene) and a cyanine dye.

In one aspect of the present invention, the content of the dye is preferably 1% by mass or less with respect to the entire solid content of the second coloring composition.

In one aspect of the present invention, the first coloring composition preferably includes a material selected from At least one of the group consisting of a dye and a dipyrromethene dye.

According to the present invention, a method for manufacturing a color filter is provided, which is used to manufacture a color filter effective for high image quality.

1‧‧‧ color filter

2‧‧‧ substrate

3‧‧‧ Filter

4‧‧‧ Black Matrix

5‧‧‧ protective film

FIG. 1 is a schematic cross-sectional view of a color filter according to a third embodiment of the present invention.

Implementation of the invention

The inventors intensively reviewed the results, and found that in the manufacturing method of a color filter in which the colored patterns of each color are sequentially formed, the above-mentioned problem is effectively solved by considering the characteristics of the colored patterns of each color and adjusting the formation order thereof. problem.

That is, as described above, it has been found that in the stage of forming a color pattern of each color sequentially in a specified order in a method of manufacturing a color filter, by adjusting the formation order of a color pattern including a coloring agent having poor heat resistance, the heat resistance can be improved. problem. More specifically, it is found that in a method for manufacturing a color filter, a coloring pattern containing a coloring agent having poor heat resistance is formed after a coloring pattern of a coloring pattern of another color that does not contain a coloring agent having poor heat resistance. Improve the problem of heat resistance.

Further, in the stage of sequentially forming the above-mentioned coloring patterns in the method for manufacturing a color filter, it was found that the above-mentioned problem of transfer dyeing can be improved by adjusting the order of forming the coloring patterns including a compound that is liable to transfer dyes. More specifically, in the method for manufacturing a color filter, it is found that a coloring pattern containing a compound that is liable to transfer dye is formed after the coloring pattern of another color does not contain a coloring pattern that is liable to transfer dye. Improve the migration problem mentioned above.

Therefore, in the method for producing a color filter of the present invention, as a coloring agent for the coloring composition for forming a colored pattern, a dye effective for improving the image quality of the color filter can be used.

At this time, in the color filter, it is effective to provide a coloring pattern containing no dye together with a coloring pattern containing a dye. For example, in a color filter, it is preferable to provide a coloring pattern containing a pigment that has good heat resistance and slight migration problems. Thus, in the stage of sequentially forming the colored patterns of each color in the manufacturing method of the color filter, by adjusting the formation order of the colored patterns including the dye and forming the colored patterns after the pigment is included, the above-mentioned transfer dyeing can be improved Problems and heat resistance problems.

Further, in the color filter, there are a plurality of coloring patterns corresponding to each of the plurality of colors, and among them, there are a plurality of coloring patterns including a dye as a colorant. In such a case, as at least one of the plurality of dyes contained in the plurality of coloring patterns, it is preferable to use a dye having good heat resistance equivalent to the heat resistance of the pigment for coloring. Formation of patterns.

In addition, in the manufacturing method of the color filter at this time, by forming a coloring pattern including a dye with poor heat resistance and a coloring pattern including a dye with good heat resistance on the one hand, adjusting their formation order on the other hand can improve The problem of heat resistance mentioned above. That is, in the method for manufacturing a color filter, by forming a coloring pattern including a dye having good heat resistance before a coloring pattern including a dye having poor heat resistance, the aforementioned problem of heat resistance can be improved.

Hereinafter, embodiments of the present invention will be described.

In addition, in the present invention, the "radiation" irradiated during exposure includes the concepts of visible rays, ultraviolet rays, far ultraviolet rays, X-rays, and charged particle rays. Moreover, in the present invention, when any one or both of "acrylic acid and methacrylic acid" are shown, there are those expressed as "(meth) acrylic acid". Similarly, when any one or both of "acrylfluorenyl and methacrylfluorenyl" are shown, there are those expressed as "(meth) acrylfluorenyl".

The present invention relates to a color filter having at least three colors, but the three colors are preferably blue, green, and red, and each refers to light having a wavelength of about 400 to 500 nm, 500 to 600 nm, and 600 to 700 nm. Each color may be a combination of colors having a plurality of wavelengths.

The combination of colors having a plurality of wavelengths specifically means that a plurality of dyes can be contained in the filters of each color, and the colors can be expressed by a plurality of filters.

Embodiment 1. <Manufacturing method of color filter>

The method for manufacturing a color filter according to the first embodiment of the present invention includes at least the following steps [1] to [3].

[1] A step of forming a first colored pattern corresponding to the first color using the first colored composition (hereinafter also referred to as "step [1]").

[2] A step of forming a second colored pattern corresponding to the second color using the second colored composition (hereinafter also referred to as "step [2]").

[3] A step of forming a third colored pattern corresponding to the third color using the third colored composition (hereinafter also referred to as "step [3]").

In the method for manufacturing a color filter according to the first embodiment of the present invention, the first color in step [1] (step [1]) and the second color in step [2] (step [2]) may be used. None of the colors and the third color of step [3] (step [3]) is a predetermined color, but various colors such as red, green, and blue. However, in the method for manufacturing a color filter according to the first embodiment of the present invention, the first color, the second color, and the third color are not the same color among them.

In addition, the method for manufacturing a color filter according to this embodiment preferably includes [4] for curing the first colored pattern, the second colored pattern, and the third colored pattern after steps [1] to [3], and The step of forming the first filter by the first coloring pattern, forming the second filter by the second coloring pattern, and forming the third filter by the third coloring pattern (hereinafter also referred to as "step [4]").

Here, the method for manufacturing a color filter of this embodiment may also harden the colored pattern formed in each of the above steps [1] to [3] to form a corresponding filter, and omit the above-mentioned Independent step [4].

That is, in the step [1], the first coloring pattern may be formed and then cured, and the first color filter may be formed from the first coloring pattern. Similarly, in the step [2], after the second colored pattern is formed, it is allowed to harden to form a second filter from the second colored pattern. Similarly, in the step [3], after forming the third colored pattern, it is allowed to harden to form a third filter from the third colored pattern.

By doing so, the color filter manufacturing method of this embodiment can form a colored pattern on a substrate or a substrate having a filter formed by curing a colored pattern, and a color of a certain color before curing. The colored pattern does not form colored patterns of other colors, and alleviates the problem of migration.

In addition, when the color filter has a protective film, the method for manufacturing a color filter according to this embodiment may be performed after step [1] to step [4], and provided with [5] to form a resin for forming a protective film. The step of forming a protective film on a substrate having a color filter and forming a protective film (hereinafter also referred to as "step [5]").

In the method for manufacturing a color filter of this embodiment, in steps [1] to [3], a dye can be used as a coloring agent for a coloring composition for forming a colored pattern. For example, in step [1], the first colored pattern is formed using the first colored composition, but may include a material selected from At least one member of the group consisting of a dye and a dipyrromethene dye. The third color of step [3] may be red or green, and the third coloring composition used therein may contain a coloring agent containing a dye and a polymerizable compound. By using such a third coloring composition, the third coloring pattern can correspond to red or green on the one hand and include a dye on the other.

In the method for manufacturing a color filter according to this embodiment, a dye is used as a coloring agent for a coloring composition for forming a coloring pattern, so that a color filter effective for improving the image quality can be manufactured.

When a dye is contained in the third coloring composition in step [3], the dye is preferably a fluorescent dye. In the method for manufacturing a color filter according to this embodiment, a fluorescent filter that is effective in improving the image quality can be manufactured by using a fluorescent dye as a colorant.

Again, the above Dyes and dipyrromethene dyes can be used as blue dyes. As a result of a review by the inventor's dedication, it is known that the dyes have slight heat resistance problems. Therefore, the first coloring pattern is selected from the group consisting of At least one of the group consisting of a dye and a dipyrromethene dye can achieve high image quality.

On the other hand, in the method for manufacturing a color filter of this embodiment, in the second coloring composition used in step [2], the content ratio of the dye is preferably 1% by mass or less with respect to the entire solid content thereof. . That is, it is preferable that the second coloring composition does not contain a dye, or even if it contains, the content ratio of the dye is preferably 1% by mass or less with respect to the entire solid content thereof.

By adjusting the content of the dye in the second coloring composition in this way, the amount of the dye contained in the second coloring pattern can be extremely small, and the problems of heat resistance and migration problems caused by the second coloring pattern can be reduced.

In addition, by adjusting the content of the dye in the second coloring composition in step [2] as described above, when the third coloring composition in step [3] includes the dye, it is possible to perform the process between step [2] and step [3]. To adjust the sequence, you can set step [3] after step [2], which can reduce the problem of heat resistance and migration.

The first coloring composition, the second coloring composition, and the third coloring composition used in the method for manufacturing a color filter of the present embodiment will be described in detail later.

Furthermore, in the method for manufacturing a color filter of this embodiment, it is preferable to perform steps [1] to [3] in this order. That is, in the method for manufacturing a color filter of this embodiment, it is preferable to perform the above steps [1] to [3] in the order of step [1], step [2], and step [3].

Therefore, in the method for manufacturing a color filter according to the first embodiment of the present invention, it is preferable that the first coloring pattern corresponding to the first color, the second coloring pattern corresponding to the second color, and the third coloring pattern be formed in this order. A method for manufacturing a color filter constituted by the third color pattern of color.

At this time, in the method for manufacturing a color filter of this embodiment, the third coloring pattern in step [3] is as described above, and preferably contains a dye and corresponds to a red or green color. With such a configuration, the method for manufacturing a color filter according to this embodiment can reduce the above-mentioned problems of heat resistance and migration problems, and produce a color filter effective for high image quality.

In this case, in the method for manufacturing a color filter according to this embodiment, the second coloring pattern in step [2] is preferably a coloring pattern that does not contain a coloring agent with poor heat resistance or has a small content even if it contains.

In the method for manufacturing a color filter according to this embodiment, the second coloring pattern in step [2] is preferably free of a compound that is liable to transfer dye, or a coloring pattern having a very small content even if it contains.

With such a configuration, the method for manufacturing the color filter of the present embodiment can reduce the problem of heat resistance and the problem of migration from the second coloring pattern.

In the method for manufacturing a color filter according to this embodiment, the first coloring pattern in step [1] is preferably a coloring pattern that does not contain a coloring agent with poor heat resistance or a very small content even if it contains a coloring agent. For example, the first colored pattern is preferably a colored pattern containing a pigment or A coloring pattern of at least one of the group consisting of a dye and dipyrromethene dye.

With such a configuration, the method for manufacturing a color filter according to the present embodiment can reduce the problem of heat resistance and the problem of migration from the first colored pattern.

Furthermore, in the method for manufacturing a color filter according to this embodiment, the first coloring pattern in step [1] can be a coloring pattern that does not contain a compound that is liable to transfer, or has a very small content even if it contains it. For example, the first coloring pattern may be a coloring pattern including a pigment. In this case, the first coloring pattern includes In the case of at least one of the group consisting of dye and dipyrromethene dye, the composition can be selected by fully considering the high-quality effect caused by using the dye and the degradation effect caused by transfer dyeing.

In addition, the color filter obtained by the method for manufacturing a color filter according to this embodiment is as described above, and the third coloring pattern is preferably one corresponding to red or green. In addition, when the first coloring pattern is selected from the group consisting of In the case of a colored pattern of at least one of the group consisting of a dye and a dipyrromethene dye, the first colored pattern corresponds to blue. Therefore, the color filter manufactured by the color filter manufacturing method of this embodiment is preferably a color filter corresponding to the three primary colors of red, green, and blue.

Therefore, in the manufacturing method of the color filter of this embodiment, it is preferable to perform the above steps [1] to [3] in order, and each of them independently forms red (R), green (G), and blue (B). Color pattern of the three primary colors.

Then, in the manufacturing method of the color filter of this embodiment, it is preferable to form a red filter and a green filter by hardening the colored patterns of red (R), green (G), and blue (B). Light filters and blue filters are manufactured as color filters corresponding to the three primary colors of red, green and blue.

In addition, as described above, in the method for manufacturing a color filter of this embodiment, the colored pattern formed may be hardened in each of steps [1] to [3] to form a corresponding filter. , And the step of curing the colored patterns of red (R), green (G), and blue (B) together is omitted.

The manufacturing method of the color filter of this embodiment sequentially performs the above-mentioned steps [1], [2], and [3]. As a result, when the manufactured color filter becomes corresponding to red, green, and blue In the case of a color filter of three primary colors, the method for manufacturing a color filter according to this embodiment may include a method for manufacturing the six types of color filters of Examples 1 to 6 shown below as a specific example.

Example 1. A method for manufacturing a color filter in which the first color is red, the second color is green, and the third color is blue.

Example 2. A manufacturing method of a color filter in which the first color is red, the second color is blue, and the third color is green.

Example 3. Manufacturing method of a color filter in which the first color is blue, the second color is red, and the third color is green.

Example 4. A method for manufacturing a color filter in which the first color is green, the second color is red, and the third color is blue.

Example 5. A manufacturing method of a color filter in which the first color is green, the second color is blue, and the third color is red.

Example 6. A manufacturing method of a color filter in which the first color is blue, the second color is green, and the third color is red.

Among the color filter manufacturing methods of Examples 1 to 6 of the color filter manufacturing method of this embodiment, the methods of manufacturing the color filters of Examples 2, 3, 5 and 6 are The third color of step [3] of the third step is red or green, and it is preferable to use a third coloring composition containing a dye-containing coloring agent and a polymerizable compound to form a third coloring pattern. As a result, the manufacturing methods of the color filters of Examples 2, 3, 5 and 6 can reduce the problem of heat resistance and migration of the third coloring pattern.

At this time, in the method for manufacturing the color filter of Example 2, the second coloring pattern is formed using the second coloring composition, and it is preferable that the content ratio of the dye is relative to the total solid content of the second coloring composition. 1% by mass or less, or selected from A coloring pattern of at least one of the group consisting of a dye and dipyrromethene dye. The first coloring pattern is formed using the first coloring composition, and it is preferable that the content ratio of the dye is 1% by mass or less with respect to the entire solid content of the first coloring composition.

In the method for manufacturing a color filter in Example 3, the first coloring pattern is formed using the first coloring composition, and it is preferable that the content ratio of the dye is relative to the total solid content of the first coloring composition. 1% by mass or less A coloring pattern of at least one of the group consisting of a dye and dipyrromethene dye. The second coloring pattern is formed using the second coloring composition, and it is preferable that the content ratio of the dye is 1% by mass or less with respect to the entire solid content of the second coloring composition.

In the method for manufacturing a color filter of Example 5, the second coloring pattern is formed using the second coloring composition, and it is preferable that the content ratio of the dye is relative to the total solid content of the second coloring composition. 1% by mass or less, or selected from A coloring pattern of at least one of the group consisting of a dye and dipyrromethene dye. The first coloring pattern is formed using the first coloring composition, and it is preferable that the content ratio of the dye is 1% by mass or less with respect to the entire solid content of the first coloring composition.

In addition, in the method for manufacturing a color filter of Example 6, the first coloring pattern is formed using the first coloring composition, and it is preferable that the content ratio of the dye to the total solid content of the first coloring composition is 1% by mass or less A coloring pattern of at least one of the group consisting of a dye and dipyrromethene dye. The second coloring pattern is formed using the second coloring composition, and it is preferable that the content ratio of the dye is 1% by mass or less with respect to the entire solid content of the second coloring composition.

In addition, in the example of the method of manufacturing the color filter of Examples 1 to 6 of the method of manufacturing the color filter of this embodiment, the methods of manufacturing the color filter of Examples 1 and 4 are all steps [3] The third color is blue. Therefore, the manufacturing method of the color filter of Example 1 and Example 4 can use a 3rd coloring composition containing a blue dye as a colorant, and can form a 3rd coloring pattern.

In this case, the method for producing the color filters of Examples 1 and 4 is preferably used as a colorant, which contains A third coloring composition of at least one of the group consisting of a dye and a dipyrromethene dye forms a third coloring pattern. As a result, the method for manufacturing the color filters of Examples 1 and 4 includes that the third coloring pattern contains a dye effective in improving the image quality, and on the other hand, it reduces the problem of heat resistance and migration of the third coloring pattern. The problem.

Collectively, the method for manufacturing the color filters of Examples 1 and 4 can be performed by setting the content ratio of the dyes contained in the first coloring pattern and the second coloring pattern to, for example, all solid components. 1% by mass or less, the problem of migration from the first colored pattern and the second colored pattern is reduced.

Hereinafter, an example of a method for manufacturing a color filter according to the first embodiment of the present invention will be described in detail, that is, a method for manufacturing the color filters of Examples 1 to 6 described above.

[Manufacturing method of color filter of Example 1]

As an example of a method for manufacturing a color filter according to the first embodiment of the present invention, the method for manufacturing a color filter of Example 1 includes each of the following steps [1a] corresponding to the steps [1] to [3] described above. ] ~ Step [3a], perform step [1a], step [2a], and step [3a] in this order. Furthermore, a first coloring pattern corresponding to the first color, a second coloring pattern corresponding to the second color, and a third coloring pattern corresponding to the third color may be sequentially formed on the same substrate. As described above, in the method of manufacturing the color filter of Example 1, the first color is red, the second color is green, and the third color is blue.

[1a] a step of forming a first coloring pattern corresponding to red using the first coloring composition (hereinafter also referred to as "step [1a]"); [2a] forming a first coloring composition corresponding to green with the second coloring composition 2 step of coloring a pattern (hereinafter also referred to as "step [2a]"), [3a] using a third coloring composition to form a third coloring pattern corresponding to blue (hereinafter also referred to as "step [3a] ").

In the method for manufacturing a color filter of Example 1, the third coloring pattern in step [3a] is formed using a third coloring composition, and it is preferably one containing a blue dye. In particular, the third coloring pattern preferably includes a material selected from At least one of the group consisting of a dye and dipyrromethene dye.

Furthermore, in the method for manufacturing the color filter of Example 1, the first colored pattern formed in step [1a] corresponds to the red one, and the second colored pattern formed in step [2a] corresponds to the green one, which Both the first coloring composition and the second coloring composition used are preferably 1% by mass or less with respect to the total solid content of the composition.

As a result, the method for manufacturing the color filter of Example 1 can make the third coloring pattern contain a dye effective for improving the image quality, and can reduce the problem of heat resistance and migration of the third coloring pattern. . In addition, the problem of migration from the first colored pattern and the second colored pattern can be reduced.

Next, each of steps [1a] to [3a] will be described.

(Step [1a])

Step [1a] is a step of forming a first coloring pattern by forming a coating film on a substrate using the first coloring composition. As described above, in step [1a] of the method for manufacturing a color filter of Example 1, the first color is red, and the first coloring pattern corresponds to red.

In this step, a first coloring composition for forming a first coloring pattern is initially used, and a coating film thereof is formed on a substrate.

On the surface of the substrate, a light-shielding layer (black matrix) is formed on the surface of the substrate, as needed, so as to separate the pixel-forming portions. Next, on this substrate, after applying the first coloring composition, preliminary heating (hereinafter also referred to as "pre-baking") is performed to evaporate the solvent to form a coating film.

Examples of the material of the substrate include glass such as soda lime glass or alkali-free glass, silicon, polyethylene terephthalate, polybutylene terephthalate, polyether fluorene, polycarbonate, and aromatic Polyamidamine, polyamidamine, imine, polyimide, etc. In addition, for these substrates, appropriate pretreatments such as pharmaceutical treatment such as a silane coupling agent, plasma treatment, ion plating, sputtering, vapor phase reaction method, and vacuum evaporation may be applied in advance as desired.

Examples of a method for applying the first colored composition to a substrate include a spray method, a roll coating method, a spin coating method (spin coating method), a slot die coating method, and a rod coating method. Among these, a spin coating method and a slot die coating method are preferred.

Pre-baking is usually performed at 70 ° C to 110 ° C for about 1 minute to 10 minutes.

The film thickness after drying is usually 0.6 μm to 8 μm, and preferably 1.2 μm to 5 μm.

As described later, a part of the first colored pattern may be removed before the first colored pattern is cured to form the first filter.

For example, by irradiating (exposing) radiation to a dried coating film through a photomask, developing with an alkali developing solution, and dissolving and removing unexposed portions of the coating film, a first colored pattern having a predetermined pattern can be formed.

More specifically, after the coating film of the first coloring composition is coated on the substrate, the substrate is pre-baked, exposed, and developed in the order of operation to form a substrate in which the first coloring pattern is arranged in a predetermined arrangement.

The above-mentioned black matrix system can use a photolithography method to make a metal film such as chromium formed by sputtering or evaporation into a desired pattern. However, a coloring composition containing a black coloring agent can be used. The colored pattern is formed in the same manner.

Examples of the light source of radiation include lamp light sources such as xenon lamps, halogen lamps, tungsten lamps, high-pressure mercury lamps, ultra-high-pressure mercury lamps, metal halide lamps, medium-pressure mercury lamps, and low-pressure mercury lamps, argon ion lasers, and YAG lasers. , XeCl excimer laser, nitrogen laser and other laser light sources. Radiation having a wavelength in the range of 190 nm to 450 nm is preferred. As an exposure light source, an ultraviolet LED can also be used. The radiation exposure is preferably 10 J / m ² to 10000 J / m ² .

As the alkali developing solution, sodium carbonate, sodium hydroxide, potassium hydroxide, tetramethylammonium hydroxide, choline, 1,8-diazabicyclo- [5.4.0] -7-undecene, 1,5-diazabicyclo- [4.3.0] -5-nonene.

To the alkali developing solution, for example, an appropriate amount of a water-soluble organic solvent such as methanol, ethanol, or a surfactant may be added. In addition, the alkali is usually washed with water after development. As a development processing method, a spray development method, a spray development method, an impregnation (immersion) development method, a liquid immersion (overflow) development method, or the like can be used. The development conditions are preferably 5 seconds to 300 seconds at room temperature.

Alternatively, instead of the alkali imaging method, a solvent imaging method may be used. The solvent imaging method can be performed in the same manner as the alkali imaging method, except that an organic solvent is used instead of the alkali imaging solution in the alkali imaging method. For a more specific method, refer to, for example, Japanese Patent Application Laid-Open No. 2014-199272, which is incorporated into the specification of this case.

(Step [2a])

After the above step [1a], using the substrate on which the first colored pattern has been formed, a second colored pattern is formed on the substrate. As described above, in step [2a] of the method for manufacturing a color filter of Example 1, the second color is green, and the second coloring pattern corresponds to the green one. In step [2a], the second coloring composition for forming the second coloring pattern is used, and the second coloring operation is performed in the same order as in step [1a] in the order of coating, prebaking, exposure, and development. A pattern is formed on the substrate.

(Step [3a])

After the above step [2a], a substrate having a first colored pattern and a second colored pattern is formed, and a third colored pattern is formed on the substrate. As described above, in step [3a] of the method for manufacturing a color filter of Example 1, the third color is blue, and the third coloring pattern corresponds to blue. That is, in step [3a], the third coloring composition for forming the third coloring pattern is used, and in the same manner as step [1a] and step [2a], operation is performed in the order of coating, prebaking, exposure, and development. A third colored pattern is formed on the substrate.

Through the above steps [1a] to [3a], the method for manufacturing the color filter of Example 1 can sequentially form the first colored pattern of red corresponding to the first color on the same substrate, The second colored pattern of green corresponding to the second color and the third colored pattern of blue corresponding to the third color.

Next, the method for manufacturing the color filter of Example 1 includes steps [4] after steps [1a] to [3a]. That is, after steps [1a] to [3a], the first colored pattern, the second colored pattern, and the third colored pattern are cured, a first filter is formed from the first colored pattern, and a first filter is formed from the second colored pattern. 2 filters, and a third filter is formed from the third coloring pattern. Step [4] is explained below.

(Step [4])

In step [4], as described above, after step [1a] to step [3a], the first coloring pattern, the second coloring pattern, and the third coloring pattern are hardened to form a first filter and a second filter. Light filter and third filter.

In order to harden a 1st coloring pattern, a 2nd coloring pattern, and a 3rd coloring pattern, baking is performed normally (henceforth a "post-baking"). The post-baking temperature is, for example, 180 ° C to 280 ° C. The post-baking time is, for example, 10 minutes to 60 minutes.

The film thicknesses of the first filter, the second filter, and the third filter thus formed are usually 0.5 μm to 5 μm, and preferably 1.0 μm to 3 μm.

After forming the first filter, the second filter, and the third filter, a part of them may be removed. As a method of removing a part of a 1st filter, a 2nd filter, and a 3rd filter, the etching method is mentioned.

For example, an etching method is to form a photoresist on a filter from which a part of the first filter, the second filter, and the third filter is to be removed. This photoresist pattern is used as an etching mask, and is etched by dry etching. After the etching, the remaining photoresist pattern is removed to make the filter have a specified pattern. For a more specific method, refer to, for example, Japanese Patent Application Laid-Open No. 2008-241744, which is incorporated into the specification of the present case.

As described above, the manufacturing method of the color filter of Example 1 includes steps [1a] to [3a] and step [4]. On the same substrate, a first red filter corresponding to the first color, A green second filter corresponding to the second color and a third blue filter corresponding to the third color are manufactured as color filters corresponding to the three primary colors of red, green, and blue.

At this time, the method for manufacturing the color filter of Example 1 is as described above. In each of steps [1a] to [3a], the formed coloring pattern is hardened to form a filter, and the independent filter is omitted Step [4].

That is, in step [1a], after forming the first coloring pattern, it is allowed to harden to form a first filter from the first coloring pattern. Similarly, in the step [2a], a second colored pattern may be formed. Then, it is hardened, and a 2nd color filter is formed from a 2nd coloring pattern. Similarly, in the step [3a], after the third colored pattern is formed, it is allowed to harden to form a third filter from the third colored pattern.

At this time, in the method for manufacturing the color filter of Example 1, as the hardening conditions for hardening each of the first colored pattern, the second colored pattern, and the third colored pattern, each can be performed in the same manner as in step [4]. The 1 colored pattern, the 2nd colored pattern, and the 3rd colored pattern are the same as those cured.

As a result, the manufacturing method of the color filter of Example 1 is based on a coloring pattern of a certain color before curing, and does not form a coloring pattern of another color, and can reduce the problem of migration.

[Manufacturing method of color filter of Example 2]

As an example of a method for manufacturing a color filter according to the first embodiment of the present invention, the method for manufacturing a color filter of Example 2 includes each of the following steps [1b] corresponding to the above steps [1] to [3]. ] ~ Step [3b], perform step [1b], step [2b], and step [3b] in this order. Furthermore, a first coloring pattern corresponding to the first color, a second coloring pattern corresponding to the second color, and a third coloring pattern corresponding to the third color may be sequentially formed on the same substrate. As described above, in the method of manufacturing the color filter of Example 2, the first color is red, the second color is blue, and the third color is green.

[1b] a step of forming a first coloring pattern corresponding to red using the first coloring composition (hereinafter also referred to as "step [1b]"), [2b] using a second coloring composition to form a blue corresponding Step of second coloring pattern (hereinafter also referred to as "step [2b]"), [3b] Step of forming a third coloring pattern corresponding to green using the third coloring composition (hereinafter also referred to as "step [3b] ").

In the method for manufacturing a color filter of Example 2, the third coloring pattern in step [3b] is formed using the third coloring composition, and it is preferably one containing a dye. The dye contained in the third coloring composition is preferably a fluorescent dye. In the manufacturing method of the color filter of Example 2, by using a fluorescent dye as the coloring agent of the third coloring composition, a color filter effective for higher image quality can be manufactured.

In addition, the second colored pattern in step [2b] is formed using the second colored composition, and it is preferable that the content ratio of the dye is 1% by mass or less with respect to the entire solid content of the second colored composition, or the second The coloring pattern contains a selected from At least one of the group consisting of a dye and dipyrromethene dye.

At this time, the first coloring pattern in step [1b] is formed using the first coloring composition, and it is preferable that the first coloring composition does not contain a dye, or even if it contains, the content ratio of the dye with respect to the entire solid content thereof It is 1% by mass or less.

In the method for manufacturing a color filter of Example 2, step [1b] may be the same step as step [1a] of the method for manufacturing a color filter of Example 1 described above. That is, in step [1b], using the first coloring composition for forming the first coloring pattern, the first coloring operation is performed in the same order as in step [1a] in the order of coating, prebaking, exposure, and development. A pattern is formed on the substrate.

In the manufacturing method of the color filter of Example 2, step [2b] is the step [2a] relative to the manufacturing method of the color filter of Example 1 described above. The second colored pattern corresponding to green is used as The second coloring composition is used to form a second coloring pattern corresponding to blue This is the second coloring composition. Then, in the same manner as in the step [2a], a second coloring pattern corresponding to blue is formed on a substrate on which the first coloring pattern has been formed in the order of coating, prebaking, exposure, and development.

In the method for manufacturing a color filter of Example 2, step [3b] is a step [3a] relative to step [3a] of the method for manufacturing a color filter of Example 1 described above, and a method for forming a third colored pattern corresponding to blue is used. As the third coloring composition, a person for forming a third coloring pattern corresponding to green is used as the third coloring composition. Then, in the same manner as the step [3a], a third coloring pattern corresponding to green is formed on the substrate on which the first coloring pattern and the second coloring pattern have been formed in the order of coating, prebaking, exposure, and development. on.

Through the above steps [1b] to [3b], the method for manufacturing the color filter of Example 2 can sequentially form the first colored pattern of red corresponding to the first color on the same substrate, The second colored pattern of blue corresponding to the second color and the third colored pattern of green corresponding to the third color.

Next, the method for manufacturing the color filter of Example 2 includes steps [4] after steps [1b] to [3b]. That is, after steps [1b] to [3b], the first colored pattern, the second colored pattern, and the third colored pattern are hardened, a first filter is formed from the first colored pattern, and a first filter is formed from the second colored pattern. 2 filters, and a third filter is formed from the third coloring pattern. Step [4] is the same as step [4] of the method for manufacturing the color filter of Example 1.

As described above, the manufacturing method of the color filter of Example 2 has steps [1b] to [3b] and step [4], and can be formed on the same substrate. The first red filter corresponding to the first color, the second blue filter corresponding to the second color, and the third green filter corresponding to the third color are manufactured to produce red, green, and Color filters for the three primary colors of blue.

At this time, the method for manufacturing the color filter of Example 2 is the same as the method for manufacturing the color filter of Example 1 described above, and the colored pattern formed in each of steps [1b] to [3b] can be made. Hardened to form the corresponding filter without the separate step [4].

As a result, the manufacturing method of the color filter of Example 2 is based on a coloring pattern of a certain color before curing, and does not form a coloring pattern of another color, and can reduce the problem of migration.

[Manufacturing method of color filter of Example 3]

As an example of the method for manufacturing a color filter according to the first embodiment of the present invention, the method for manufacturing a color filter of Example 3 includes each of the following steps [1c] corresponding to the above steps [1] to [3]. ] ~ Step [3c], perform step [1c], step [2c], and step [3c] in this order. Furthermore, a first coloring pattern corresponding to the first color, a second coloring pattern corresponding to the second color, and a third coloring pattern corresponding to the third color may be sequentially formed on the same substrate. As described above, in the method for manufacturing a color filter of Example 3, the first color is blue, the second color is red, and the third color is green.

[1c] using the first colored composition to form a first colored pattern corresponding to blue (hereinafter also referred to as "step [1c]"), [2c] using the second colored composition to form a red corresponding Step of second coloring pattern (hereinafter also referred to as "step [2c]"), [3c] Step of forming a third coloring pattern corresponding to green using the third coloring composition (hereinafter also referred to as "step [3c] ").

The third coloring pattern is formed using a third coloring composition, and it is preferable to include a dye. The dye contained in the third coloring composition is preferably a fluorescent dye. In the method for manufacturing a color filter of Example 3, a fluorescent dye was used as a coloring agent for the third coloring composition, and thus a color filter effective for higher image quality could be manufactured.

In the method for manufacturing a color filter of Example 3, the first coloring pattern in step [1c] is formed using the first coloring composition, and it is preferably based on the solid content of the first coloring composition. The content ratio is 1% by mass or less, or the first coloring pattern includes a material selected from At least one of the group consisting of a dye and dipyrromethene dye. The first coloring pattern may include a material selected from At least one of the group consisting of a dye and dipyrromethene dye.

At this time, the second coloring pattern in step [2c] is formed using the second coloring composition, and it is preferable that the second coloring composition does not contain a dye or, even if it contains, the content ratio of the dye with respect to the entire solid content thereof It is 1% by mass or less.

In the method for manufacturing a color filter of Example 1, in step [1a], a person for forming a first colored pattern corresponding to red is used as the first colored composition. In contrast, in the method for manufacturing a color filter of Example 3, in step [1c], a person for forming a first coloring pattern corresponding to blue was used as the first coloring composition. Then, in the same manner as the step [1a] described above, a first coloring pattern corresponding to blue is formed on the substrate in the order of coating, prebaking, exposure, and development.

In the method for manufacturing the color filter of Example 3, step [2c] is a step relative to the method for manufacturing the color filter of Example 1 described above. [2a] As the second coloring composition, a person for forming a second coloring pattern corresponding to green is used, and as a second coloring composition, a person for forming a second coloring pattern corresponding to red. Then, in the same manner as the step [2a], a second coloring pattern corresponding to red is formed on the substrate on which the first coloring pattern has been formed in the order of coating, prebaking, exposure, and development.

In the method for manufacturing the color filter of Example 3, step [3c] is the step [3a] relative to the step [3a] of the method for manufacturing the color filter of Example 1 described above, and a method for forming a third colored pattern corresponding to blue is used. As the third coloring composition, a person for forming a third coloring pattern corresponding to green is used as the third coloring composition. Then, in the same manner as the step [3a], a third coloring pattern corresponding to green is formed on the substrate on which the first coloring pattern and the second coloring pattern have been formed in the order of coating, prebaking, exposure, and development. on.

Through the above steps [1c] to [3c], the manufacturing method of the color filter of Example 3 can sequentially form the first colored pattern of blue corresponding to the first color on the same substrate. The second colored pattern of red corresponding to the second color and the third colored pattern of green corresponding to the third color.

Next, the method for manufacturing a color filter of Example 3 includes steps [4] after steps [1c] to [3c]. That is, after steps [1c] to [3c], the first colored pattern, the second colored pattern, and the third colored pattern are cured, a first filter is formed from the first colored pattern, and a first filter is formed from the second colored pattern. 2 filters, and a third filter is formed from the third coloring pattern. Step [4] is the same as step [4] of the method for manufacturing a color filter of Example 1.

As described above, the manufacturing method of the color filter of Example 3 includes steps [1c] to [3c] and step [4], and the first blue filter corresponding to the first color can be formed on the same substrate. 2. A second red filter corresponding to the second color and a third green filter corresponding to the third color are manufactured to produce color filters corresponding to the three primary colors of red, green, and blue.

At this time, the method for manufacturing the color filter of Example 3 is the same as the method for manufacturing the color filter of Example 1 described above, and the colored pattern formed in each of steps [1c] to [3c] may be performed. Hardened to form a filter without the separate step [4].

As a result, the manufacturing method of the color filter of Example 3 is based on a coloring pattern of a certain color before curing, and does not form a coloring pattern of another color, which can reduce the problem of migration.

[Manufacturing method of color filter of Example 4]

As an example of a method for manufacturing a color filter according to the first embodiment of the present invention, the method for manufacturing a color filter of Example 4 includes each of the following steps [1d] corresponding to the above steps [1] to [3]. ] ~ Step [3d], perform step [1d], step [2d], and step [3d] in this order. Furthermore, a first coloring pattern corresponding to the first color, a second coloring pattern corresponding to the second color, and a third coloring pattern corresponding to the third color may be sequentially formed on the same substrate. As described above, in the method for manufacturing a color filter of Example 4, the first color is green, the second color is red, and the third color is blue.

[1d] a step of forming a first coloring pattern corresponding to green using the first coloring composition (hereinafter also referred to as "step [1d]"); [2d] forming a first coloring composition corresponding to red using the second coloring composition 2 the step of coloring the pattern (hereinafter also referred to as "step [2d]"), [3d] A step of forming a third colored pattern corresponding to blue using the third colored composition (hereinafter also referred to as "step [3d]").

In the manufacturing method of the color filter of Example 4, the 3rd coloring pattern is formed using the 3rd coloring composition, It is preferable that it is a thing containing a blue dye. In particular, the third coloring pattern preferably contains a material selected from At least one of the group consisting of a dye and dipyrromethene dye.

Furthermore, in the method for manufacturing a color filter of Example 4, the first colored pattern formed in step [1d] corresponds to green, and the second colored pattern formed in step [2d] corresponds to red, which Both the first coloring composition and the second coloring composition used are preferably 1% by mass or less with respect to the total solid content of the composition.

In the method for manufacturing a color filter of Example 1 described above, in step [1a], a person for forming a first colored pattern corresponding to red is used as the first colored composition. On the other hand, in the method for manufacturing a color filter of Example 4, in step [1d], a person for forming a first coloring pattern corresponding to green was used as the first coloring composition. Then, in the same manner as the step [1a], a first coloring pattern corresponding to green is formed on the substrate in the order of coating, prebaking, exposure, and development.

In the method for manufacturing the color filter of Example 4, step [2d] is the step [2a] relative to the method for manufacturing the color filter of Example 1 described above. [2a] The second colored pattern corresponding to green is used as As the second coloring composition, a person for forming a second coloring pattern corresponding to red is used as the second coloring composition. Further, as in the above step [2a], In the order of coating, pre-baking, exposure, and development, a second colored pattern corresponding to red is formed on a substrate on which the first colored pattern has been formed.

In the method for manufacturing a color filter of Example 4, step [3d] may be the same step as step [3a] of the method for manufacturing a color filter of Example 1 described above. That is, in step [3d], the third coloring composition for forming the third coloring pattern is used. In the same manner as in the step [3a], the operation in the order of coating, prebaking, exposure, and development will correspond to blue. The third colored pattern is formed on the substrate on which the first colored pattern and the second colored pattern have been formed.

Through the above steps [1d] to [3d], the method for manufacturing the color filter of Example 4 can sequentially form the first green coloring pattern corresponding to the first color on the same substrate, The second colored pattern of red corresponding to the second color and the third colored pattern of blue corresponding to the third color.

Next, the method for manufacturing a color filter of Example 4 includes steps [4] after steps [1d] to [3d]. That is, after steps [1d] to [3d], the first colored pattern, the second colored pattern, and the third colored pattern are cured, a first filter is formed from the first colored pattern, and a first filter is formed from the second colored pattern. 2 filters, and a third filter is formed from the third coloring pattern. Step [4] is the same as step [4] of the method for manufacturing the color filter of Example 1.

As described above, the manufacturing method of the color filter of Example 4 includes steps [1d] to [3d] and step [4]. On the same substrate, a green first filter corresponding to the first color, A second filter of red corresponding to the second color and a third filter of blue corresponding to the third color are manufactured as color filters corresponding to the three primary colors of red, green, and blue.

At this time, the manufacturing method of the color filter of Example 4 is the same as the manufacturing method of the color filter of Example 1 described above, and the colored pattern formed in each of steps [1d] to [3d] can be made Hardened to form the corresponding filter without the separate step [4].

As a result, the manufacturing method of the color filter of Example 4 is based on a coloring pattern of a certain color before curing, and does not form a coloring pattern of another color, and can reduce the problem of migration.

[Manufacturing method of the color filter of Example 5]

As an example of a method for manufacturing a color filter according to the first embodiment of the present invention, the method for manufacturing a color filter of Example 5 includes each of the following steps [1e] corresponding to the above steps [1] to [3]. ] ~ Step [3e], perform step [1e], step [2e], and step [3e] in this order. Furthermore, a first coloring pattern corresponding to the first color, a second coloring pattern corresponding to the second color, and a third coloring pattern corresponding to the third color may be sequentially formed on the same substrate. As described above, in the method of manufacturing the color filter of Example 5, the first color is green, the second color is blue, and the third color is red.

[1e] a step of forming a first coloring pattern corresponding to green using the first coloring composition (hereinafter also referred to as "step [1e]"), [2e] using a second coloring composition to form a blue corresponding Step of second coloring pattern (hereinafter also referred to as "step [2e]"), [3e] Step of forming a third coloring pattern corresponding to red using the third coloring composition (hereinafter also referred to as "step [3e]" ").

In the manufacturing method of the color filter of Example 5, the 3rd coloring pattern of a step [3e] is formed using the 3rd coloring composition, It is preferable to include a dye. In addition, the dye contained in the third coloring composition is The material is preferably a fluorescent dye. In the method for manufacturing a color filter of Example 5, by using a fluorescent dye as a coloring agent for the third coloring composition, a color filter effective for higher image quality can be manufactured.

The second coloring pattern in step [2e] is formed using the second coloring composition, and it is preferable that the content ratio of the dye is 1% by mass or less based on the total solid content of the second coloring composition, or the second The coloring pattern contains a selected from At least one of the group consisting of a dye and dipyrromethene dye.

At this time, the first coloring pattern in step [1e] is formed using the first coloring composition, and it is preferable that the first coloring composition does not contain a dye, or even if it contains, the content ratio of the dye with respect to the entire solid content thereof It is 1% by mass or less.

In the method for manufacturing a color filter of Example 1, in step [1a], a first coloring pattern for forming a red color is used as the first coloring composition. In contrast, in the method for manufacturing a color filter of Example 5, in step [1e], a person for forming a first coloring pattern corresponding to green was used as the first coloring composition. Then, in the same manner as the step [1a] described above, a first coloring pattern corresponding to green is formed on the substrate in the order of coating, prebaking, exposure, and development.

In the method for manufacturing the color filter of Example 5, step [2e] is the step [2a] relative to the method for manufacturing the color filter of Example 1 described above. [2a] The one for forming a second colored pattern corresponding to green is used as As the second coloring composition, a person for forming a second coloring pattern corresponding to blue is used as the second coloring composition. Moreover, as in the above step [2a], the operations in the order of coating, pre-baking, exposure, and development will be applied to A second colored pattern to be blue is formed on a substrate on which the first colored pattern has been formed.

In the method for manufacturing a color filter of Example 5, step [3e] is a step [3a] relative to step [3a] of the method for manufacturing a color filter of Example 1 described above. The third color pattern corresponding to blue is used. As the third coloring composition, a person for forming a third coloring pattern corresponding to red is used as the third coloring composition. Then, in the same manner as the step [3a], a third coloring pattern corresponding to red is formed on the substrate on which the first coloring pattern and the second coloring pattern have been formed in the order of coating, prebaking, exposure, and development. on.

Through the above steps [1e] to [3e], the manufacturing method of the color filter of Example 5 can sequentially form the first green coloring pattern corresponding to the first color on the same substrate, The second colored pattern of blue corresponding to the second color and the third colored pattern of red corresponding to the third color.

Next, the method for manufacturing a color filter of Example 5 includes steps [4] after steps [1e] to [3e]. That is, after steps [1e] to [3e], the first colored pattern, the second colored pattern, and the third colored pattern are cured, a first filter is formed from the first colored pattern, and a first filter is formed from the second colored pattern. 2 filters, and a third filter is formed from the third coloring pattern. Step [4] is the same as step [4] of the method for manufacturing a color filter of Example 1.

As described above, the manufacturing method of the color filter of Example 5 includes steps [1e] to [3e] and step [4]. On the same substrate, a green first filter corresponding to the first color, Corresponds to the blue of the second color The second filter of the color and the third filter of the red corresponding to the third color produce a color filter corresponding to the three primary colors of red, green, and blue.

At this time, the manufacturing method of the color filter of Example 5 is the same as the manufacturing method of the color filter of Example 1 described above, and the colored pattern formed in each of steps [1e] to [3e] may be formed Hardened to form a filter without the separate step [4].

As a result, the method for manufacturing the color filter of Example 5 is based on a coloring pattern of a certain color before curing, and does not form a coloring pattern of another color, and can reduce the problem of migration.

[Manufacturing method of color filter of Example 6]

As an example of a method for manufacturing a color filter according to the first embodiment of the present invention, the method for manufacturing a color filter of Example 6 includes each of the following steps corresponding to the above steps [1] to [3]. [1f] to step [3f], and perform step [1f], step [2f], and step [3f] in this order. Furthermore, a first coloring pattern corresponding to the first color, a second coloring pattern corresponding to the second color, and a third coloring pattern corresponding to the third color may be sequentially formed on the same substrate. As described above, in the method of manufacturing the color filter of Example 6, the first color is blue, the second color is green, and the third color is red.

[1f] a step of forming a first coloring pattern corresponding to blue using the first coloring composition (hereinafter also referred to as "step [1f]"), and [2f] forming a corresponding color of green using the second coloring composition Step of second coloring pattern (hereinafter also referred to as "step [2f]"), [3f] Step of forming a third coloring pattern corresponding to red using the third coloring composition (hereinafter also referred to as "step [3f] ").

In the method for manufacturing a color filter of Example 6, the first coloring pattern in step [1f] is formed using the first coloring composition, and it is preferable that the first coloring composition is dyed with respect to all solid components of the first coloring composition. The content ratio is 1% by mass or less, or the first coloring pattern includes a material selected from At least one of the group consisting of a dye and dipyrromethene dye. The first coloring pattern may include a material selected from At least one of the group consisting of a dye and dipyrromethene dye.

At this time, the second coloring pattern in step [2f] is formed by using the second coloring composition. It is preferable that the second coloring composition does not contain a dye, or even if it contains, the content ratio of the dye is relative to the entire solid content of the dye. 1 mass% or less.

In the method for manufacturing a color filter of Example 1, in step [1a], a person for forming a first colored pattern corresponding to red is used as the first colored composition. In contrast, in the method for manufacturing a color filter of Example 6, in step [1f], a person for forming a first coloring pattern corresponding to blue was used as the first coloring composition. Then, in the same manner as in the step [1a], a first coloring pattern corresponding to blue is formed on the substrate in the order of coating, prebaking, exposure, and development.

In the method for manufacturing a color filter of Example 6, step [2f] may be the same step as step [2a] of the method for manufacturing a color filter of Example 1 described above. That is, in step [2f], using the second coloring composition for forming the second coloring pattern, in the same manner as in the above step [2a], operations in the order of coating, prebaking, exposure, and development will correspond to The second green colored pattern is formed on the substrate on which the first colored pattern has been formed.

In the method for manufacturing a color filter of Example 6, step [3f] is a step [3a] relative to step [3a] of the method for manufacturing a color filter of Example 1 described above, and a method for forming a third colored pattern corresponding to blue is used. As the third coloring composition, a person for forming a third coloring pattern corresponding to red is used as the third coloring composition. Then, in the same manner as the step [3a], a third coloring pattern corresponding to red is formed on the substrate on which the first coloring pattern and the second coloring pattern have been formed in the order of coating, prebaking, exposure, and development. on.

Through the above steps [1f] to [3f], the method for manufacturing the color filter of Example 6 can sequentially form the first colored pattern of blue corresponding to the first color on the same substrate. The second coloring pattern of green corresponding to the second color and the third coloring pattern of red corresponding to the third color.

Next, the method for manufacturing a color filter of Example 6 includes steps [4] after steps [1f] to [3f]. That is, after steps [1f] to [3f], the first colored pattern, the second colored pattern, and the third colored pattern are hardened, a first filter is formed from the first colored pattern, and a first filter is formed from the second colored pattern. 2 filters, and a third filter is formed from the third coloring pattern. Step [4] is the same as step [4] of the method for manufacturing a color filter of Example 1.

As described above, the manufacturing method of the color filter of Example 6 includes steps [1f] to [3f] and step [4]. On the same substrate, a first blue filter corresponding to the first color can be formed. 2. A second green filter corresponding to the second color and a third red filter corresponding to the third color, and a color filter corresponding to the three primary colors of red, green, and blue are manufactured.

At this time, the method for manufacturing the color filter of Example 6 is the same as the method for manufacturing the color filter of Example 1 described above, and the colored pattern formed in each of steps [1f] to [3f] may be performed. Hardened to form a filter without the separate step [4].

As a result, the method for manufacturing the color filter of Example 6 is based on a coloring pattern of a certain color before curing, and does not form a coloring pattern of another color, and can reduce the problem of migration.

As described above, in the method for manufacturing a color filter according to this embodiment, by using each of the first to third coloring compositions, first to third colors corresponding to the first to third colors are sequentially formed. Each coloring pattern can produce a color filter. For example, as in the method for manufacturing a color filter of Examples 1 to 6, by using each of the first to third coloring compositions, sequentially forming a color pattern of three primary colors of red, green, and blue, a red color can be produced. A color filter, a green color filter, and a blue color filter, and color filters corresponding to the three primary colors of red, green, and blue.

Furthermore, in the method for manufacturing a color filter of this embodiment, by using a dye as a coloring agent for each of the first to third coloring compositions, it is possible to produce a color filter effective for improving the image quality.

At this time, in the method for manufacturing the color filter of this embodiment, in the stage of sequentially forming the coloring patterns of the first to third colors, the order of formation of the coloring pattern including the coloring agent with poor heat resistance and the The order of formation of the colored pattern of the compound that is easy to transfer, can reduce the problem of heat resistance of the color filter and the problem of transfer.

Specifically, after a coloring pattern containing a coloring agent having poor heat resistance is formed on a coloring pattern of another color, heat resistance is formed. Poor coloring patterns can improve heat resistance. In addition, by forming a coloring pattern of a certain color after the coloring pattern of another color does not contain a compound that is liable to transfer, a coloring pattern including a compound that is easily transferable can reduce the shift of the color filter. Problem.

As a result, the method for manufacturing a color filter according to this embodiment is capable of manufacturing a color filter that is effective for improving the image quality.

Next, in the method for manufacturing a color filter according to the first embodiment of the present invention, a first coloring composition for forming a first coloring pattern corresponding to the first color and a second coloring corresponding to the second color will be described. A second coloring composition for forming a pattern and a third coloring composition for forming a third coloring pattern corresponding to the third color.

Embodiment 2. <Coloring composition>

The coloring composition of the second embodiment of the present invention can be used to form a coloring pattern for each color, and is used to form each color filter constituting a color filter for a display element.

As described above, in the method for manufacturing a color filter according to the first embodiment of the present invention, the first coloring composition is used to form a first coloring pattern corresponding to the first color, and the second coloring composition is used to form the first coloring pattern. The second coloring pattern corresponding to the second color is different from the first color, and the third coloring pattern corresponding to the third color, which is different from the first color and the second color, is formed using the third coloring composition.

Therefore, in the method for manufacturing a color filter according to the first embodiment of the present invention, as the first coloring composition and the second coloring group, As the product and the third coloring composition, the coloring composition according to the second embodiment of the present invention, in which each color or component is optimized, can be used.

That is, the first coloring composition, the second coloring composition, and the third coloring composition used in the method for manufacturing a color filter according to the first embodiment of the present invention can be used as the second embodiment of the present invention. An example of a coloring composition.

The coloring composition of the second embodiment of the present invention is described in detail later, and it is possible to appropriately select and include a coloring agent showing various colors, and it can be used for forming a coloring pattern of various colors. As a result, the coloring composition of this embodiment can be used for forming filters of various colors, and can be used for manufacturing color filters.

Therefore, as an example, the coloring composition of this embodiment may contain the selected coloring agent in step [1] of the method for manufacturing a color filter according to the first embodiment of the present invention, so that it can be used in correspondence with Formation of the first colored pattern of the first color. As a result, an example of the colored composition of this embodiment is the first colored composition used for the formation of the first colored pattern in step [1].

At this time, as an example of the coloring composition of this embodiment, the first coloring composition in step [1] is preferably 1% by mass or less of the total solid content of the dye, or contains At least one of the group consisting of a dye and dipyrromethene dye.

Dyes and dipyrromethene dyes can be used as blue dyes. According to the results of the intensive and intensive review by the inventors of the present invention, it is known that the dyes have a slight problem of heat resistance. Therefore, the first colored pattern formed by the first colored composition in step [1] is formed by including At least one of the group consisting of a dye and a dipyrromethene dye can achieve high image quality and reduce the problem of heat resistance.

Also, as another example, the coloring composition of this embodiment may contain the selected coloring agent in step [2] of the method for manufacturing a color filter according to the first embodiment of the present invention, so as to be used in correspondence with the first Formation of a two-color second colored pattern. As a result, another example of the colored composition of the present embodiment is a second colored composition for forming a second colored pattern in step [2].

At this time, as another example of the coloring composition of the present embodiment, the second coloring composition in step [2] is preferably 1% by mass or less with respect to the total solid content thereof. By adjusting the content of the dye in the second coloring composition in the step [2] in this way, the amount of the dye contained in the second coloring pattern can be extremely small, and the problem of migration from the second coloring pattern can be reduced.

Similarly, as another example, the coloring composition of this embodiment may include the selected coloring agent in step [3] of the method for manufacturing a color filter according to the first embodiment of the present invention, so as to be used for corresponding applications. Formation of a third colored pattern in the third color. As a result, a further example of the colored composition of the present embodiment is the third colored composition used for the formation of the third colored pattern in step [3].

At this time, the third color of step [3] is preferably red or green, and the third coloring composition used therein preferably contains a coloring agent containing a dye and a polymerizable compound. The third coloring composition in the step [3] is used for producing a color filter effective for high image quality by using a dye as a colorant.

More specifically, the coloring composition according to the present embodiment includes, for example, a coloring agent containing red, which is used when forming a red coloring pattern. In this case, the first coloring composition of the color filter manufacturing method of Example 1 in the color filter manufacturing method of the first embodiment of the present invention can be used. Moreover, the 1st coloring composition which is a manufacturing method of the color filter of Example 2 can be used. Moreover, the 2nd coloring composition which is a manufacturing method of the color filter of Example 3 can be used. In addition, the second coloring composition which is the method for manufacturing the color filter of Example 4 can be used. A third coloring composition can be used as the method for manufacturing the color filter of Example 5. A third coloring composition can be used as the method for producing a color filter of Example 6.

The coloring composition of the present embodiment includes, for example, a green coloring agent for forming a green coloring pattern. In this case, in the method for manufacturing a color filter according to the first embodiment of the present invention, the second coloring composition that is the method for manufacturing the color filter of Example 1 can be used. A third coloring composition can be used as the method for manufacturing the color filter of Example 2. In addition, a third coloring composition which is a method for producing a color filter of Example 3 can be used. The first coloring composition used as the method for manufacturing the color filter of Example 4 can be used. Moreover, the 1st coloring composition which is a manufacturing method of the color filter of Example 5 can be used. In addition, a second coloring composition which is a method for producing a color filter of Example 6 can be used.

In addition, the coloring composition of this embodiment contains the coloring agent containing blue, for example, when forming a blue coloring pattern. In this case, in the production of the color filter according to the first embodiment of the present invention, In the manufacturing method, the third coloring composition which is the manufacturing method of the color filter of Example 1 can be used. Moreover, the 2nd coloring composition which is a manufacturing method of the color filter of Example 2 can be used. Moreover, the 1st coloring composition which is the manufacturing method of the color filter of Example 3 can be used. The third coloring composition used as the method for manufacturing the color filter of Example 4 can be used. In addition, a second coloring composition which is a method for producing a color filter of Example 5 can be used. Moreover, the 1st coloring composition which is the manufacturing method of the color filter of Example 6 can be used.

Hereinafter, the coloring composition of this embodiment will be described in detail.

[Components of coloring composition]

The coloring composition of this embodiment contains a colorant. It usually further contains at least one selected from the group consisting of a binder resin and a polymerizable compound, and optionally contains a polymerization initiator. Moreover, other arbitrary components may be contained in the range which does not impair the effect of this invention. Next, each component contained in the coloring composition of this embodiment is demonstrated.

(Polymerizable compound)

Examples of the polymerizable compound contained in the coloring composition of this embodiment include compounds having two or more polymerizable groups. Examples of the polymerizable group include an ethylenically unsaturated group, an ethylene oxide group, an oxycyclobutane group, and an N-alkoxymethylamino group. In the present invention, the polymerizable compound is preferably a compound having two or more (meth) acrylfluorenyl groups or a compound having two or more N-alkoxymethylamino groups. The polymerizable compound may be used alone or in combination of two or more.

Specific examples of the compound having two or more (meth) acrylfluorenyl groups include a reaction product of an aliphatic polyhydroxy compound and (meth) acrylic acid [polyfunctional (meth) acrylate], and caprolactone Polyfunctional (meth) acrylates modified by esters, polyfunctional (meth) acrylates modified by alkylene oxide, polyfunctional amines obtained by reacting (meth) acrylates having hydroxyl groups with polyfunctional isocyanates A urethane (meth) acrylate, a reactant of a (meth) acrylate having a hydroxyl group and an acid anhydride [a polyfunctional (meth) acrylate having a carboxyl group], and the like.

Examples of the aliphatic polyhydroxy compound include divalent aliphatic polyhydroxy compounds such as ethylene glycol, propylene glycol, polyethylene glycol, and polypropylene glycol; glycerol, trimethylolpropane, pentaerythritol, and dipentaerythritol. A trivalent or more aliphatic polyhydroxy compound.

Examples of the (meth) acrylate having a hydroxyl group include 2-hydroxyethyl (meth) acrylate, trimethylolpropane di (meth) acrylate, pentaerythritol tri (meth) acrylate, and Pentaerythritol penta (meth) acrylate, glycerol dimethacrylate and the like. Examples of the polyfunctional isocyanate include toluene diisocyanate, hexamethylene diisocyanate, diphenylmethylene diisocyanate, isophorone diisocyanate, and the like. Examples of the acid anhydride include anhydrides of dibasic acids such as succinic anhydride, maleic anhydride, glutaric anhydride, itaconic anhydride, phthalic anhydride, and hexahydrophthalic anhydride, pyromellitic anhydride, and biphenyltetracarboxylic acid. Tetracarboxylic dianhydride such as acid dianhydride and diphenyl ketone tetracarboxylic dianhydride.

Examples of the polyfunctional (meth) acrylate modified with caprolactone include compounds described in paragraphs [0015] to [0018] of Japanese Patent Application Laid-Open No. 11-44955.

Examples of the polyfunctional (meth) acrylate modified by the alkylene oxide include bisphenol A di (meth) acrylate modified by at least one selected from the group consisting of ethylene oxide and propylene oxide. , Modified by at least one isocyanuric tris (meth) acrylate modified from at least one selected from ethylene oxide and propylene oxide, modified by at least one selected from ethylene oxide and propylene oxide Quality trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate modified by at least one selected from ethylene oxide and propylene oxide, and selected from ethylene oxide And at least one modified pentaerythritol tetra (meth) acrylate of propylene oxide, dipentaerythritol penta (meth) acrylate modified by at least one selected from ethylene oxide and propylene oxide, Dipentaerythritol hexa (meth) acrylate modified by at least one selected from ethylene oxide and propylene oxide.

Examples of the compound having two or more N-alkoxymethylamino groups include compounds described in paragraph [0056] of Japanese Patent Application Laid-Open No. 2015-143835.

Among these polymerizable compounds, a reaction product of a trivalent or higher aliphatic polyhydroxy compound and (meth) acrylic acid [polyfunctional (meth) acrylate], and a polycaprolactone modified one are preferred. Functional (meth) acrylate, polyfunctional urethane (meth) acrylate, polyfunctional (meth) acrylate with carboxyl group, N, N, N ', N', N ", N"- Hexa (alkoxymethyl) melamine, N, N, N ', N'-tetrakis (alkoxymethyl) benzoguanamine. Among the reactants of an aliphatic polyhydric compound having a valence of 3 or more and (meth) acrylic acid, trimethylolpropane triacrylate, pentaerythritol triacrylate, dipentaerythritol pentaacrylate, and dipentaerythritol hexaacrylate are preferred. Among polyfunctional (meth) acrylates having a carboxyl group, It is preferably a reaction product of pentaerythritol triacrylate and succinic anhydride, and a reaction product of dipentaerythritol pentaacrylate and succinic anhydride.

The polymerizable compound may be used alone or in combination of two or more. The proportion of the polymerizable compound in the coloring composition of this embodiment, when the coloring composition has a binder resin, it is preferably 10 parts by mass to 700 parts by mass, and more preferably 100 parts by mass of the binder resin. 20 parts by mass to 600 parts by mass. When the coloring composition contains no binder resin, the use ratio of the polymerizable compound is preferably 100 parts by mass to 1500 parts by mass, and more preferably 200 parts by mass to 1,000 parts by mass, relative to 100 parts by mass of the coloring agent. By setting the use ratio of the polymerizable compound to the above range, a colored pattern or the like having sufficient heat resistance and solvent resistance can be formed.

(Colorant)

For each coloring pattern and its own color filter, high color purity, brightness, contrast, etc. are strongly required. Therefore, as the coloring agent contained in the coloring composition of this embodiment used in the method of manufacturing a color filter according to the first embodiment of the present invention, it is necessary to select a coloring agent that effectively improves the color purity and the like.

As the colorant, for example, any one of a pigment and a dye may be used. However, in consideration of the high color purity and brightness required for a coloring pattern and a color filter, a coloring agent containing a dye is particularly preferred.

Examples of the dye that can be used in the colorant include acid dyes, basic dyes, and nonionic dyes.

In addition, acid dyes, basic dyes, non-ionic dyes, and the like are defined as described later. Therefore, ionic dyes that form intramolecular salts are included in acid dyes.

Acid dyes are salts of an anionic chromophore and a relatively cationic group, and chromophores have both anionic and cationic groups to form an intramolecular salt-type structure as a chromophore with a cationic group Examples include triarylmethane-based chromophores, methine-based chromophores, cyanine-based chromophores, azo-based chromophores, diarylmethane-based chromophores, and quinoneimine-based Chromophore, quinoline chromophore, anthraquinone chromophore, nitro chromophore, phthalocyanine chromophore, dipyrromethene chromophore, Department of chromophores and so on. Among them, triarylmethane-based chromophore, cyanine-based chromophore, azo-based chromophore, quinoline-based chromophore, anthraquinone-based chromophore, phthalocyanine-based chromophore, Chromophore, more preferably cyanine chromophore, anthraquinone chromophore, Department of chromophore.

Examples of the relative cation include a proton, a metal cation, and an onium cation. Examples of the metal cation include monovalent metal cations such as lithium ions, sodium ions, potassium ions, rubidium ions, and cesium ions, and divalent metal cations such as magnesium ions, calcium ions, strontium ions, and barium ions. Examples of onium cations include ammonium cations and sulfonium cations. Specific examples of the ammonium cation include a cation in a compound described in paragraph [0045] of Japanese Patent Application Laid-Open No. 2011-138094 or a resin having an ammonium cation in a side chain described in Japanese Patent Application No. 4873101. Specific examples of the sulfonium cation include cations described in paragraphs [0038] to [0040] of Japanese Patent Application Laid-Open No. 2013-190776.

Examples of such acid dyes include CI Acid Yellow 11, CI Acid Orange 7, CI Acid Red 37, CI Acid Red 180, CI Acid Blue 29, CI Direct Red 28, CI Direct Red 83, and CI Direct Yellow 12. , CI Direct Orange 26, CI Direct Green 59, CI Active Yellow 2, CI Active Red 17, CI Active Red 120, CI Active Black 5, CI Mordant Red 7, CI Mordant Yellow 5, CI Mordant Black 7, CI Direct Green 28 Azo acid dyes such as CI; triaryl methane acid dyes such as CI Acid Blue 9; anthraquinone acid dyes such as CI Acid Blue 40, CI acid green 25, CI reactive blue 19, CI reactive blue 49; CI acid red 52, CI Acid Red 87, CI Acid Red 92, CI Acid Red 289, CI Acid Red 388, etc. Acid dyes; quinoline acid dyes such as CI Acid Yellow 3; nitro acid dyes such as CI Acid Yellow 1, CI Acid Orange 3.

A salt of a basic dye-based chromophore and a relatively anionic group. Examples of the chromophore having a cationic group include a triarylmethane-based chromophore, a methine-based chromophore, and cyanine. Chromophore, azo chromophore, diarylmethane chromophore, quinone imine chromophore, quinoline chromophore, anthraquinone chromophore, phthalocyanine chromophore, Dipyrromethene chromophore, Chromophore, among which triarylmethane chromophore, cyanine chromophore, azo chromophore, quinoneimine chromophore, quinoline chromophore, and anthraquinone can be preferably used. Chromophore, phthalocyanine chromophore, Chromophore, more preferably cyanine chromophore, anthraquinone chromophore, Department of chromophore.

Examples of the relative anion possessed by such a basic dye include a halogen ion, a boron anion, a phosphate anion, and a carboxylic acid. Acid anion, sulfuric acid anion, organic sulfonic acid anion, nitrogen anion, methyl metal method anion, hydroxide ion, metal complex anion, and the like.

Examples of such basic dyes include azo basic dyes such as CI Basic Blue 41 and CI Basic Red 18. Triarylmethane basic dyes such as CI Basic Blue 7 and CI Basic Violet 11 Wait for Basic dyes; quinimine basic dyes such as CI Basic Blue 3 and CI Basic Blue 9, and Japanese Patent Publication No. 2007-503477, International Publication No. 10/123071, Japanese Patent Application Publication No. 2011-116803 Basic dyes described in Japanese Patent Application Publication No. 2011-117995, Japanese Patent Application Publication No. 2011-133844, Japanese Patent Application Publication No. 2011-145540, and the like.

Examples of the nonionic dyes include azo nonionic dyes such as CI disperse orange 5, CI disperse red 58, CI disperse blue 165, and CI cyanine blue 4, CI disperse red 60, and CI. Anthraquinone nonionic dyes such as Disperse Blue 56, CI Disperse Blue 60; phthalocyanine nonionic dyes such as CI Sapphire Blue 5; quinoline nonionic dyes such as CI Solvent Yellow 33 and CI Disperse Yellow 64; CI disperse Yellow 42 and other nitro nonionic dyes; CI solvent yellow 179, disperse yellow 201 and other methine nonionic dyes, and Japanese Patent Application Laid-Open No. 2010-168531, Request 3 or Japanese Patent Application 4, Japanese Patent Laid-Open No. 2010-170073, Japanese Patent Laid-Open No. 2010-170074, Japanese Patent Laid-Open No. 2010-275531, Japanese Patent Laid-Open No. 2010-275533 Non-ionic dyes described in Japanese Patent Publications and the like.

Furthermore, from the viewpoint of further improving the characteristics of color filters such as color purity, as the dye used in the colorant, when the first coloring composition is used to form the first coloring pattern corresponding to red, or When the second colored composition is used to form a second colored pattern corresponding to red, or when the third colored composition is used to form a third colored pattern corresponding to red, it is preferably selected from the group consisting of At least one of the group consisting of dyes and cyanine dyes, and when the first coloring composition is used to form the first coloring pattern corresponding to green, or the second coloring composition is used to form the green coloring When the second colored pattern or the third colored composition is used to form the third colored pattern corresponding to green, it is preferably at least 1 selected from the group consisting of coumarin dyes and styryl dyes. Species. That is, the dye contained in the third coloring composition preferably contains a dye selected from the group consisting of coumarin dye, styryl dye, At least one of the group consisting of dyes and cyanine dyes.

Furthermore, as the dye used in the colorant, when the first coloring composition system is used to form a first coloring pattern corresponding to blue, or the second coloring composition system is used to form a second coloring corresponding to blue. When a patterner or a third coloring composition is used to form a third coloring pattern corresponding to blue, it is preferred that At least one selected from dyes, triarylmethane dyes and dipyrromethene dyes, more preferably At least one selected from dyes and dipyrromethene dyes.

Pigments that can be used in combination with dyes as colorants include, for example, compounds classified as pigments in the color index (C.I .; issued by The Society of Dyers and Colourists), that is, those with the name of the C.I. as described below.

CI Pigment Red 166, CI Pigment Red 177, CI Pigment Red 224, CI Pigment Red 242, CI Pigment Red 254, CI Pigment Red 264 and other red pigments; CI Pigment Green 7, CI Pigment Green 36, CI Pigment Green 58, CI Pigment Red Green pigments such as Pigment Green 59; CI Pigment Blue 15: 6, CI Pigment Blue 16, CI Pigment Blue 79, CI Pigment Blue 80 and other blue pigments; CI Pigment Yellow 83, CI Pigment Yellow 129, CI Pigment Yellow 138, CI Pigment Yellow 139, CI Pigment Yellow 150, CI Pigment Yellow 179, CI Pigment Yellow 180, CI Pigment Yellow 185, CI Pigment Yellow 211, CI Pigment Yellow 215 and other yellow pigments; CI Pigment Orange 38 and other orange pigments; CI Pigment Purple pigments such as Violet 19 and CI Pigment Violet 23; black pigments such as CI Pigment Black 1, CI Pigment Black 7.

In addition, as the red pigment, a brominated diketopyrrolopyrrole pigment represented by the formula (Ic) in Japanese Patent Application Publication No. 2011-523433 may be used. In addition, Japanese Patent Laid-Open No. 2001-081348, Japanese Patent Laid-Open No. 2010-026334, Japanese Patent Laid-Open No. 2010-191304, Japanese Patent Laid-Open No. 2010-237384, Japanese Patent Laid-Open No. 2010-237569, The lake pigments described in JP-A-2011-006602, JP-A-2011-145346, and the like.

When a pigment is used in this embodiment, the pigment may be purified by a recrystallization method, a reprecipitation method, a solvent washing method, a sublimation method, a vacuum heating method, or a combination thereof. In addition, the pigment can be used by modifying the surface of the particles with a resin as desired.

The organic pigment is preferably used by miniaturizing primary particles by a so-called salt mill.

When a pigment is used in this embodiment, it may further contain a well-known dispersant and a dispersing assistant. Examples of well-known dispersants include urethane-based dispersants, polyethyleneimine-based dispersants, polyoxyethylene alkyl ether-based dispersants, polyoxyethylene alkylphenyl ether-based dispersants, and polydisperses. A glycol diester-based dispersant, a sorbitan fatty acid ester-based dispersant, a polyester-based dispersant, an acrylic-based dispersant, and the like. Examples of the dispersion aid include pigment derivatives. Such a dispersant is commercially available, and examples thereof include the dispersant described in paragraph [0047] of Japanese Patent Application Laid-Open No. 2015-143835.

Examples of the pigment derivative include copper phthalocyanine, diketopyrrolopyrrole, and a sulfonic acid derivative of quinophthalone.

In the coloring composition of this embodiment, the content of the colorant is usually 5 to 70% by mass of the solid content of the coloring composition from the point of forming a high-quality color filter. It is preferably 5 to 60% by mass, more preferably 10 to 50% by mass, and particularly preferably 20 to 50% by mass. The solid content referred to here is a component other than the solvent described later.

When the coloring composition of this embodiment contains a dye as a colorant, from the viewpoint of more enjoying the effects of the present invention, The content ratio of all colorants and dyes is preferably 5% by mass or more, more preferably 10% by mass or more, and particularly preferably 15% by mass or more. The coloring composition of this embodiment may contain a dye alone as a colorant. The coloring composition of this embodiment can form a coloring pattern with excellent reliability even when the content of the dye is high with respect to the solid content of the coloring composition, or when a dye and a pigment are used in combination as a colorant. Excellent color filter.

(Binder resin)

As the binder resin in the present embodiment, an alkali-soluble resin having alkali developability is preferable, and a polymer having an acidic functional group such as a carboxyl group, a carboxylic acid anhydride group, and a phenolic hydroxyl group is preferable. The polymer preferably has a (meth) acrylfluorenyl group.

The polymer is particularly preferably (a1) at least one selected from the group consisting of unsaturated carboxylic acids and unsaturated carboxylic anhydrides (hereinafter referred to as "compound (a1)") and compounds other than (a2) (a1) Copolymer of a saturated compound (hereinafter referred to as "compound (a2)").

As a particularly preferable example of such a polymer, [A1] is an unsaturated compound containing the compound (a1) and having at least one hydroxyl group in one molecule (hereinafter referred to as "compound (a2-1)") A copolymer of monomers (hereinafter referred to as "copolymer [α]"), a polymer obtained by reacting an unsaturated isocyanate compound (hereinafter referred to as "polymer [A]"); [A2] contains compound (a1 ) And a copolymer of an unsaturated compound having an epoxy group (hereinafter referred to as "compound (a2-2)") (hereinafter referred to as "copolymer [β]"); [A3] A monomer formed from compound (a1) and unsaturated compound other than compound (a1), compound (a2-1), and compound (a2-2) (hereinafter referred to as "compound (a2-3)") Copolymer (hereinafter referred to as "copolymer [γ]") and the like. In the production of the copolymer [α], the compound (a2-3) can be coexisted, and the copolymer [α] is regarded as a copolymer of the compound (a1), the compound (a2-1) and the compound (a2-3). When producing the copolymer [β], in addition to the compound (a1) and the compound (a2-2), the compound (a2-3) can also coexist, and the copolymer [β] is regarded as the compound (a1) and the compound (a2-2). ) And a compound (a2-3).

Examples of the compound (a1) used in the production of the above-mentioned copolymer [α], copolymer [β], and copolymer [γ] include monocarboxylic acid, dicarboxylic acid, and anhydrides of dicarboxylic acids.

Examples of the monocarboxylic acid include acrylic acid, methacrylic acid, crotonic acid, 2-propenyloxyethyl succinic acid, 2-methacrylic acid ethoxyethyl succinic acid, and 2-propenyloxyethyl succinic acid. Hexahydrophthalic acid, 2-methacryloxyethylhexahydrophthalic acid, and the like; examples of the dicarboxylic acid include maleic acid, fumaric acid, and citraconic acid; and the like Examples of the anhydride of the dicarboxylic acid include the above-mentioned anhydrides of the dicarboxylic acid.

Among these, from the viewpoints of copolymerization reactivity and solubility of the obtained copolymer in a developing solution, acrylic acid, methacrylic acid, 2-propenyloxyethylsuccinic acid, 2 -Methacryloxyethyl succinic acid or maleic anhydride.

The compound (a1) may be used alone or as a mixture of two or more.

In the copolymer [α], the copolymer [β], and the copolymer [γ], the content of the repeating unit derived from the compound (a1) is preferably 5 masses % To 60% by mass, more preferably 7% to 50% by mass, and particularly preferably 8% to 40% by mass. When the content of the repeating unit derived from the compound (a1) is 5 to 60% by mass, a colored composition having a higher level of characteristics such as developability and storage stability is obtained.

Examples of the compound (a2-1) used in the production of the copolymer [α] include hydroxyalkyl esters of (meth) acrylic acid, dihydroxyalkyl esters of (meth) acrylic acid, and ( 6-hydroxyhexanoyloxy) alkyl esters and the like.

In these specific examples, examples of the hydroxyalkyl ester of (meth) acrylic acid include 2-hydroxyethyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, and (meth) acrylic acid. 4-hydroxybutyl ester and the like; examples of the dihydroxyalkyl (meth) acrylic acid include 2,3-dihydroxypropyl (meth) acrylate and 1,3-dihydroxypropyl (meth) acrylate , 3,4-dihydroxybutyl (meth) acrylate, and the like; (6-hydroxyhexanoyloxy) alkyl esters of (meth) acrylic acid include, for example, 2- (6-hydroxy) (meth) acrylate Hexamethyleneoxy) ethyl ester, 3- (6-hydroxyhexamethyleneoxy) propyl (meth) acrylate, and the like.

Among these compounds (a2-1), 2-hydroxyethyl acrylate, 3-hydroxypropyl acrylate, 4-hydroxybutyl acrylate, 2-hydroxyethyl methacrylate, 3- Hydroxypropyl ester, 4-hydroxybutyl methacrylate, 2,3-dihydroxypropyl acrylate, 2,3-dihydroxypropyl methacrylate, (6-hydroxyhexanoxyl) ) Alkyl ester.

In the copolymer [α], the compound (a2-1) as described above may be used alone or in combination of two or more.

In the copolymer [α], the content of the repeating unit derived from the compound (a2-1) is preferably 1% to 50% by mass, more preferably 3% to 40% by mass, and particularly preferably 5% by mass. % ~ 30% by mass. When the content of the repeating unit derived from the compound (a2-1) is 1% to 50% by mass, the stability of the copolymer obtained by the reaction with the unsaturated isocyanate compound becomes good, and The storage stability of the colored composition is improved.

Examples of the epoxy group of the compound (a2-2) used in the production of the copolymer [β] include an ethylene oxide group (having a 1,2-epoxy structure) and an oxycyclobutane group (having 1, 3-epoxy structure) and so on.

Examples of the unsaturated compound having an ethylene oxide group include the compounds described in paragraph [0025] of Japanese Patent Application Laid-Open No. 2011-203562, but from the viewpoint of polymerizability, methacrylic acid is preferred. Glycidyl ester, 2-methylglycidyl methacrylate, 3,4-epoxycyclohexyl methacrylate, 3,4-epoxycyclohexyl methyl methacrylate, 3-methyl 3-Methacryloxymethyloxetane or 3-ethyl-3-methacryloxymethyloxetane.

In the production of the copolymer [β], the compound (a2-2) may be used alone or as a mixture of two or more.

In the copolymer [β], the content of the repeating unit derived from the compound (a2-2) is preferably 0.5% to 70% by mass, more preferably 1% to 60% by mass, and particularly preferably 3% by mass. % ~ 50% by mass. When the content of the repeating unit derived from the compound (a2-2) is 0.5% by mass to 70% by mass, a colored composition in which the heat resistance, copolymer and storage stability of the copolymer are balanced at a higher level is obtained.

Examples of the compound (a2-3) which can be used in the production of the above-mentioned copolymer [γ] or optionally used in the production of the copolymer [α] and the copolymer [β] include, for example, alkyl (meth) acrylate Esters, naphthenic (meth) acrylates, aryl (meth) acrylates, aralkyl (meth) acrylates, unsaturated dicarboxylic acid dialkyl esters, having an oxygenated 5-membered ring or 6 oxygenated Cyclic (meth) acrylates, vinyl aromatic compounds, conjugated diene compounds, and other unsaturated compounds.

In these specific examples, examples of the alkyl (meth) acrylate include methyl acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, and n-butyl (meth) acrylate. Ester, second butyl (meth) acrylate, third butyl (meth) acrylate, and 2-methylglycidyl methacrylate; examples of the cycloalkyl (meth) acrylate include (methyl) (Cyclo) hexyl acrylate, 2-methylcyclohexyl (meth) acrylate, tricyclo [5.2.1.0 ^2,6 ] dec-8-ester (meth) acrylate, 2- (tri) (meth) acrylate Cyclo [5.2.1.0 ^2,6 ] dec-8-yloxy) ethyl, (meth) acrylic acid Esters; examples of aryl (meth) acrylates include phenyl (meth) acrylate; examples of aralkyl (meth) acrylates include benzyl (meth) acrylate; as Examples of the saturated dicarboxylic acid dialkyl esters include diethyl maleate and diethyl fumarate. Examples of the (meth) acrylic acid ester having an oxygen-containing 5-membered ring or an oxygen-containing 6-membered ring include, for example, Examples thereof include tetrahydrofuran-2- (meth) acrylate, tetrahydropyran-2- (meth) acrylate, 2-methyltetrahydropyran-2- (meth) acrylate, and the like; Examples of the aromatic compound include styrene, α-methylstyrene, and p-methoxystyrene. Examples of the conjugated diene compound include 1,3-butadiene and isoprene. Examples of other unsaturated compounds include acrylonitrile, methacrylonitrile, (meth) acrylamide, and the like.

Among these compounds (a2-3), from the viewpoint of copolymerization reactivity, n-butyl methacrylate, 2-methylepoxypropyl methacrylate, benzyl methacrylate, Tricyclic [5.2.1.0 ^2,6 ] dec-8-methacrylate, styrene, p-methoxystyrene, tetrahydrofuran-2-methacrylate, 1,3-butadiene and the like.

In the production of the above-mentioned copolymer [α], copolymer [β], and copolymer [γ], the compound (a2-3) may be used alone or as a mixture of two or more thereof.

In the copolymer [α] and the copolymer [β], the content of the repeating unit derived from the compound (a2-3) is preferably 10% by mass to 70% by mass, and more preferably 20% by mass to 50% by mass. Especially good is 30% to 50% by mass. When the content of the repeating unit of the compound (a2-3) is 10% by mass to 70% by mass, control of the molecular weight of the copolymer becomes easy, and a colored composition having a higher level of developability is obtained.

The copolymer [α], copolymer [β], and copolymer [γ] are preferably in a suitable solvent, preferably in the presence of a well-known free-radical polymerization initiator, by polymerization as described above. Body mixture.

For the above copolymers [α], [β], and [γ], the polystyrene-equivalent weight-average molecular weight (hereinafter referred to as "PC") measured by gel permeation chromatography (hereinafter referred to as "GPC") "Mw") is preferably 1,000 to 100,000, and more preferably 2,000 to 50,000. When the Mw of the copolymer [α], the copolymer [β], and the copolymer [γ] is 1000 to 100,000, a colored composition having a higher level of heat resistance and developability is obtained.

The polymer [A] is obtained by reacting an unsaturated isocyanate compound with the copolymer [α]. Examples of such unsaturated isocyanate compounds include (meth) acrylic acid derivatives, and specific examples thereof include 2- (meth) acryloxyethyl isocyanate and 4- (methyl). Propylene ethoxybutyl isocyanate, 2- (2-isocyanate ethoxy) ethyl (meth) acrylate, and the like.

Among these unsaturated isocyanate compounds, from the viewpoint of reactivity with the copolymer [α], preferred are 2-propenyloxyethyl isocyanate, 2-methacryloxyethyl isocyanate, 4-Methacryloxybutyl isocyanate or 2- (2-isocyanateethoxy) ethyl methacrylate.

In the production of the polymer [A], the unsaturated isocyanate compound may be used alone or in combination of two or more.

The proportion of the unsaturated isocyanate compound used in the production of the polymer [A] is preferably 0.1 mol% to 95 mol% relative to the hydroxyl group derived from the compound (a2-1) in the copolymer [α] , More preferably 1.0 mol% to 80 mol%, and particularly preferred 5.0 mol% to 75 mol%. When the use ratio of the unsaturated isocyanate compound is 0.1 mol% to 95 mol%, it is preferable to further improve the reactivity with the copolymer [α] and the heat resistance of the coloring composition.

As the polymer having a carboxyl group and a (meth) acrylfluorene group, in addition to the polymer [A] described above, a polymer obtained by reacting the compound (a1) with an epoxy group possessed by the copolymer [β] may be used. (Hereinafter referred to as "polymer [B]"); a polymer obtained by reacting compound (a2-2) with a carboxyl group of copolymer [α], copolymer [β], or copolymer [γ] (To Hereinafter referred to as "Polymer [C]"). It is also possible to further react a polybasic acid anhydride with respect to the hydroxyl group possessed by the polymer [C]. Examples of the polybasic acid anhydride include compounds described in paragraph [0067] of Japanese Patent Application Laid-Open No. 2014-098140.

In the coloring composition of this embodiment, the polymer [A], the copolymer [β], and the copolymer [γ] can be used alone, respectively, but it is preferable to use the polymer [A] and the copolymer [β] together. ], Or copolymer [β] and copolymer [γ].

In the coloring composition of this embodiment, the binder resin can be produced by a well-known method. For example, it can also be obtained from Japanese Patent Application Laid-Open No. 2003-222717, Japanese Patent Application Laid-Open No. 2006-259680, and International Publication (WO ) The method disclosed in booklet 2007/029871, etc., controls its structure or Mw, Mw / Mn.

In this embodiment, the content of the binder resin is usually 5 to 1000 parts by mass, and preferably 10 to 500 parts by mass, relative to 100 parts by mass of the coloring agent. By being in such a state, not only the heat resistance and the solvent resistance are improved, but also the storage stability of the colored composition is improved.

(Polymerization initiator)

As the polymerization initiator contained in the coloring composition of this embodiment, a radiation-sensitive polymerization initiator is preferred, whereby the radiation-sensitivity can be imparted to the colored composition.

The so-called radiation-sensitive polymerization initiator in the present invention is a component that generates active species that can start a polymerization reaction by inducing radiation, and a polymer or polymerizability that can start a carboxyl group and a (meth) acrylfluorene group by inducing radiation. A component of a polymerized reactive species of a compound.

Examples of the polymerization initiator contained in the coloring composition of this embodiment as such a polymerization initiator include thioxanthone-based compounds, acetophenone-based compounds, bisimidazole-based compounds, Compounds, O-fluorenyl oxime compounds, onium salt compounds, benzoin compounds, diphenyl ketone compounds, α-diketone compounds, polynuclear quinone compounds, diazo compounds, iminosulfonic acids Ester-based compounds, onium salt-based compounds, and the like may be used singly or in combination of two or more. Among them, it is preferably selected from the group consisting of thioxanthone-based compounds, acetophenone-based compounds, bisimidazole-based compounds, At least one of the group consisting of a system compound and an O-fluorenyl oxime system compound.

Among the preferred photopolymerization initiators of this embodiment, specific examples of the thioxanthone-based compound include thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, and 2-isothioxanthone. Propylthioxanthone, 4-isopropylthioxanthone, 2,4-dichlorothioxanthone, 2,4-dimethylthioxanthone, 2,4-diethylthioxanthone, 2,4 -Diisopropylthioxanthone and the like.

Specific examples of the acetophenone-based compound include 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinylpropan-1-one and 2-benzyl- 2-dimethylamino-1- (4-morpholinylphenyl) butan-1-one, 2- (4-methylbenzyl) -2- (dimethylamino) -1- (4 -Morpholinylphenyl) butan-1-one and the like.

Specific examples of the bisimidazole-based compound include 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenyl-1,2'-bisimidazole, 2,2'-bis (2,4-dichlorophenyl) -4,4 ', 5,5'-tetraphenyl-1,2'-bisimidazole, 2,2'-bis (2,4, 6-trichlorophenyl) -4,4 ', 5,5'-tetraphenyl-1,2'-bisimidazole and the like.

When a bisimidazole compound is used as a photopolymerization initiator, it is preferable to use a hydrogen donor in combination in order to improve sensitivity. The "hydrogen donor" as used herein means a compound capable of supplying a hydrogen atom to a radical generated from a bisimidazole compound by exposure. Examples of the hydrogen donor include 2-mercaptobenzothiazole and 2-mercaptobenzo Thiol hydrogen supply such as azole, etc .; amine hydrogens such as 4,4'-bis (dimethylamino) diphenyl ketone, 4,4'-bis (diethylamino) diphenyl ketone, etc. Donor. In the present invention, one kind of hydrogen supply system may be used or two or more kinds may be used in combination, but in terms of further improving the sensitivity, it is preferable to combine one or more kinds of thiol-based hydrogen donors with one or more kinds of hydrogen donors. An amine-based hydrogen donor is used.

Also, as the above three Specific examples of the compound include compounds described in paragraphs [0063] to [0065] of Japanese Patent Publication No. 57-6096 and Japanese Patent Application Publication No. 2003-238898.

Specific examples of the O-fluorenyl oxime-based compound include 1,2-octanedione, 1- [4- (phenylthio) phenyl]-, 2- (O-benzylidene oxime). ), Ethyl ketone, 1- [9-ethyl-6- (2-methylbenzylidene) -9H-carbazol-3-yl]-, 1- (O-acetamidooxime), ethyl ketone , 1- [9-ethyl-6- (2-methyl-4-tetrahydrofurylmethoxybenzyl) -9H-carbazol-3-yl]-, 1- (O-ethylfluorenyl oxime ), Ethyl ketone, 1- [9-ethyl-6- {2-methyl-4- (2,2-dimethyl-1,3-dioxolyl) methoxybenzyl} -9H-carbazol-3-yl]-, 1- (O-acetamidooxime), 1-octanone, 1- [4- [3- [4-[[2- (ethylamyloxy) ethyl Yl] sulfofluorenyl] -2-methylbenzylfluorenyl] -6- [1-[(ethylacetoxy) imino] ethyl] -9H-carbazole-9-yl] phenyl]- , 1- (O-acetylamoxime) and the like. As commercially available products of O-fluorenyl oxime compounds, NCI-831, NCI-930 (above, ADEKA Co., Ltd.), OXE-03, OXE-04 (above, made by BASF) and so on.

In this embodiment, when a photopolymerization initiator other than a bisimidazole-based compound such as an acetophenone compound is used, a sensitizer may be used in combination. Examples of such a sensitizer include 4,4'-bis (dimethylamino) diphenyl ketone, 4,4'-bis (diethylamino) diphenyl ketone, 4-di Ethylaminoacetophenone, 4-dimethylaminophenylacetone, ethyl 4-dimethylaminobenzoate, 2-ethylhexyl 4-dimethylaminobenzoate, 2,5- Bis (4-diethylaminobenzylidene) cyclohexanone, 7-diethylamino-3- (4-diethylaminobenzyl) coumarin, 4- (diethyl Amine) chalcone and the like.

The polymerization initiator may be used alone or in combination of two or more.

In the coloring composition of this embodiment, the proportion of the polymerization initiator used is preferably 0.01 to 120 parts by mass, and more preferably 1 to 100 parts by mass relative to 100 parts by mass of the polymerizable compound. . Since the use ratio of the polymerization initiator becomes such a state, the coloring composition of this embodiment can form a coloring pattern and a color filter having high solvent resistance even at a low exposure amount.

(Other optional ingredients)

The coloring composition of this embodiment is a range which does not impair the effect of this invention, and may contain various additives as needed. Each of these optional components may be used singly or in combination of two or more kinds.

Examples of such optional components include fillers such as glass and alumina; polymer compounds such as polyvinyl alcohol and poly (fluoroalkyl acrylate); fluorine-based surfactants and silicon-based surfactants Surfactants such as 3-glycidoxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, and other adhesion promoters ; 2,2-thiobis (4-methyl-6-tert-butylphenol), 2,6-di-tert-butylphenol and other antioxidants; 2- (3-tert-butyl-5- Methyl-2-hydroxyphenyl) -5-chlorobenzotriazole, alkoxydiphenyl ketones and other ultraviolet absorbers; anti-agglomerating agents such as sodium polyacrylate; malonic acid, adipic acid, Iran Conic acid, citraconic acid, fumaric acid, mesaconic acid, 2-aminoethanol, 3-amino-1-propanol, 5-amino-1-pentanol, 3-amino-1, 2-- Residue improving agents such as propylene glycol, 2-amino-1,3-propanediol, 4-amino-1,2-butanediol; succinic acid mono [2- (meth) propenyloxyethyl], o- Imaging improvers such as mono [2- (meth) acryloxyethyl] phthalate, ω-carboxy polycaprolactone mono (meth) acrylate, and the like.

Moreover, the coloring composition of this embodiment may contain a matting agent as an arbitrary component. Wherein, when the red filter contains a material selected from When at least one of the group consisting of a dye and a cyanine dye, the matting agent preferably contains a metal complex compound, and when the green filter includes a group selected from the group consisting of a coumarin dye and a styryl dye In the case of at least one of the groups, the matting agent preferably contains a metal complex compound, and when the blue filter contains In the case of at least one selected from the group consisting of a dye, a triarylmethane dye, and a dipyrromethene dye, the matting agent preferably contains at least one selected from a tetraazaporphyrin compound, an anthraquinone compound, and a phthalocyanine compound. When the red filter contains a metal complex compound, the metal complex compound is preferably a chromium complex compound. When the green filter contains a metal complex compound, the metal complex compound preferably contains at least one selected from a nickel complex compound and a metal phthalocyanine compound.

In addition, the coloring composition system of this embodiment may contain a compound which has an amine group and an electron attracting group as an arbitrary component. By containing the compound having such a structure, in the coloring pattern obtained from the coloring composition of the present embodiment, hardening can be promoted, and lower temperature heat curing can be achieved. As a result, in the manufacture of the color filter, the heating temperature can be kept low. This heating is performed in order to harden the colored pattern and form a filter of each color. Furthermore, by containing the above-mentioned compound, the storage stability of the coloring composition can also be improved. As described above, when the display element including the color filter obtained by using the coloring composition of this embodiment is a liquid crystal display element, its voltage holding ratio can be maintained at a high level.

As a more specific example of the compound having an amine group and an electron-attracting group, for example, the compound described in paragraph [0324] of the specification of Japanese Invention Patent No. 5817562 can be mentioned. Among them, 4,4'-diaminodiphenyl is preferred Hydrazone, 2,2-bis (4-aminophenyl) hexafluoropropane, 2,2'-bis (trifluoromethyl) benzidine, ethyl 3-aminobenzenesulfonate, 3,5-bis Trifluoromethyl-1,2-diaminobenzene, 4-aminonitrobenzene, N, N-dimethyl-4-nitroaniline.

[Method for preparing colored composition]

The coloring composition system according to the second embodiment of the present invention can be prepared by uniformly mixing a colorant and a binder resin, a polymerizable compound, a polymerization initiator, and other optional components added as needed. This coloring composition is preferably dissolved in an appropriate solvent and used as a solution.

As the solvent used in the preparation of the coloring composition of the present embodiment, those which can dissolve the necessary components and optional components uniformly and do not react with each component are used.

Examples of such a solvent include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol mono-n-propyl ether, ethylene glycol mono-n-butyl ether, and diethylene glycol monomethyl ether. Ether, diethylene glycol monoethyl ether, diethylene glycol mono-n-propyl ether, diethylene glycol mono-n-butyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, Propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol mono-n-propyl ether, propylene glycol mono-n-butyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol mono-n-propyl ether, dipropylene glycol (Poly) alkanediol monoalkyl ethers such as mono-n-butyl ether, tripropylene glycol monomethyl ether, and tripropylene glycol monoethyl ether; alkyl lactates such as methyl lactate and ethyl lactate; methanol, ethanol, and propylene (Cyclo) alkyl alcohols such as alcohols, butanol, isopropanol, isobutanol, tertiary butanol, octanol, 2-ethylhexanol, cyclohexanol; keto alcohols such as diacetone alcohol; ethylene glycol Alcohol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, diethylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, propylene glycol monomethyl ether ethyl Ester, malon (Poly) alkane such as monoethyl ether acetate, dipropylene glycol monomethyl ether acetate, 3-methoxybutyl acetate, 3-methyl-3-methoxybutyl acetate Glycol monoalkyl ether acetates; cyclic ethers such as diethylene glycol dimethyl ether, diethylene glycol methyl ethyl ether, diethylene glycol diethyl ether, and tetrahydrofuran; methyl ethyl ketone , Cyclohexanone, 2-heptanone, 3-heptanone, etc .; propylene glycol diacetate, 1,3-butanediol diacetate, 1,6-hexanediol diacetate, etc. Acetate Methyl 3-methoxypropionate, ethyl 3-methoxypropionate, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl ethoxyacetate, 3-methyl Alkoxycarboxylic acid esters such as ethyl-3-methoxybutylpropionate; ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, isobutyl acetate, n-pentyl formate, Isoamyl acetate, n-butyl propionate, ethyl butyrate, n-propyl butyrate, isopropyl butyrate, n-butyl butyrate, methyl pyruvate, ethyl pyruvate, n-propyl pyruvate, Fatty acid alkyl esters such as ethyl acetate, ethyl acetate, ethyl 2-oxobutanoate; aromatic hydrocarbons such as toluene and xylene; N, N-dimethylformamide, N , N-dimethylacetamidamine, N-methylpyrrolidone, and the like, or lactam and the like.

Among these solvents, from the viewpoints of solubility, pigment dispersibility, coatability, etc., preferred are (poly) alkanediol monoalkyl ether, alkyl lactate, and (poly) alkanediol monoalkane. At least one selected from ether ether acetate.

These solvents may be used singly or in combination of two or more.

In the coloring composition of the present embodiment, the content of the solvent is not particularly limited, but from the viewpoints of coating properties and stability of the obtained coloring composition of the present embodiment, each other than the solvent of the coloring composition The total concentration of the components is preferably an amount of 5 to 50% by mass, and more preferably an amount of 10 to 40% by mass. When the colored composition is prepared in a solution state, the solid content concentration (components other than the solvent occupied in the composition solution) can be set to an arbitrary concentration (for example, 5 Mass% ~ 50 mass%). A more preferable solid content concentration varies depending on the method of forming a coating film on a substrate, and this is described later. The composition solution prepared in this manner can be used after being filtered using a microporous filter or the like having a pore size of about 0.5 μm.

The coloring composition according to this embodiment in accordance with the above components and modulation method can form various coloring patterns by selecting a colorant, and can be used for the color filter of the first embodiment of the present invention. The manufacturing method of the tablet.

For example, the coloring composition of this embodiment may contain a red coloring agent for forming a red coloring pattern. In this case, in the method for manufacturing a color filter according to the first embodiment of the present invention, it can be used as the first coloring composition in the method for manufacturing the color filter of Example 1. At this time, the content of the dye is preferably 1% by mass or less with respect to the entire solid content of the coloring composition of this embodiment.

The coloring composition of the present embodiment may contain a red coloring agent and is used as the first coloring composition in the method for producing a color filter of Example 2 described above. At this time, the content of the dye is preferably 1% by mass or less with respect to the entire solid content of the coloring composition of the embodiment.

In addition, the coloring composition of this embodiment may contain a red coloring agent, and is used as a 2nd coloring composition of the manufacturing method of the color filter of the said Example 3. At this time, the content of the dye is preferably 1% by mass or less with respect to the entire solid content of the coloring composition of the embodiment.

The coloring composition of this embodiment may contain a red coloring agent, and is used as the second coloring composition in the method for manufacturing the color filter of Example 4 described above. At this time, the content of the dye is preferably 1% by mass or less with respect to the entire solid content of the coloring composition of the embodiment.

The coloring composition of this embodiment may contain a red coloring agent, and is used as the third coloring composition in the method for producing a color filter of Example 5 described above. In this case, the red coloring agent of the coloring composition of this embodiment is preferably a coloring agent containing a dye. The dye is preferably a fluorescent dye.

The coloring composition of this embodiment may contain a red coloring agent, and is used as the third coloring composition in the method for producing a color filter of Example 6 described above. In this case, the red coloring agent of the coloring composition of this embodiment is preferably a coloring agent containing a dye. The dye is preferably a fluorescent dye.

In addition, for example, the coloring composition of this embodiment may contain a green coloring agent for forming a green coloring pattern. In this case, in the method for manufacturing a color filter according to the first embodiment of the present invention, it can be used as the second coloring composition in the method for manufacturing the color filter of Example 1. At this time, the content of the dye is preferably 1% by mass or less with respect to the entire solid content of the coloring composition of this embodiment.

The coloring composition of this embodiment may contain a green coloring agent, and is used as the third coloring composition in the method for producing a color filter of Example 2 described above. In this case, the green coloring agent of the coloring composition of this embodiment is preferably a coloring agent containing a dye. The dye is preferably a fluorescent dye.

In addition, the coloring composition of this embodiment may contain a green coloring agent, and is used as a 3rd coloring composition of the manufacturing method of the color filter of the said Example 3. In this case, the green coloring agent of the coloring composition of this embodiment is preferably a coloring agent containing a dye. The dye is preferably a fluorescent dye.

The coloring composition of this embodiment may contain a green coloring agent, and is used as the first coloring composition in the method for producing a color filter of Example 4 described above. At this time, the content of the dye is preferably 1% by mass or less with respect to the entire solid content of the coloring composition of the embodiment.

The coloring composition of this embodiment may contain a green coloring agent, and is used as the first coloring composition in the method for producing a color filter of Example 5 described above. At this time, the content of the dye is preferably 1% by mass or less with respect to the entire solid content of the coloring composition of the embodiment.

In addition, the coloring composition of this embodiment may contain a green coloring agent, and is used as a 2nd coloring composition of the manufacturing method of the color filter of the said Example 6. At this time, the content of the dye is preferably 1% by mass or less with respect to the entire solid content of the coloring composition of the embodiment.

In addition, for example, the coloring composition of this embodiment may contain a blue coloring agent for forming a blue coloring pattern. At this time, the coloring composition of this embodiment can be prepared so that the content of the dye is 1% by mass or less with respect to the total solid content of the coloring composition.

In addition, when the coloring composition of this embodiment contains a blue coloring agent and can be used to form a blue coloring pattern, the blue coloring agent may be prepared by including a blue dye. In this case, it is preferable that the blue coloring agent contains At least one of the group consisting of a dye and dipyrromethene dye.

For example, the coloring composition of this embodiment may contain a blue coloring agent as the third coloring composition of the color filter manufacturing method of Example 1 and the third coloring of the color filter manufacturing method of Example 4. Composition is used. In this case, the coloring composition of the present embodiment preferably contains a material selected from At least one of the group consisting of a dye and dipyrromethene dye.

As described above, the coloring composition of the present embodiment is the third coloring composition of the color filter manufacturing method of the first embodiment of the present invention, which is the method of manufacturing the color filter of Example 1. Moreover, the 2nd coloring composition which is the manufacturing method of the color filter of Example 2 can be used. Moreover, the 1st coloring composition which is the manufacturing method of the color filter of Example 3 can be used. The third coloring composition used as the method for manufacturing the color filter of Example 4 can be used. In addition, a second coloring composition which is a method for producing a color filter of Example 5 can be used. Moreover, the 1st coloring composition which is the manufacturing method of the color filter of Example 6 can be used.

The coloring composition according to this embodiment is used in the method for manufacturing a color filter according to the first embodiment of the present invention, and can produce a color filter effective for improving the image quality.

Embodiment 3. <Color filter>

FIG. 1 is a schematic cross-sectional view of a color filter according to a third embodiment of the present invention.

The color filter 1 shown in FIG. 1 is an example of the color filter of the present invention. The color filter 1 may be formed on the main surface of the transparent substrate 2, for example. In addition, the color filter 1 includes red (R), green (G), and blue (B) filters 3, a black matrix 4, and a protective film 5 provided on each color filter 3. The structure.

The color filter 1 according to this embodiment is manufactured by using the coloring composition according to the second embodiment of the present invention in accordance with the method for manufacturing a color filter according to the first embodiment of the present invention.

That is, in the color filter 1 of this embodiment, the filter 3 is formed by using the coloring composition of the second embodiment of the present invention to sequentially form the coloring patterns of each color in a specified order, and harden them to form . The protective film 5 can be formed, for example, by coating, patterning, and curing the resin composition for forming a protective film.

As a result, the color filter 1 of the present embodiment can be used as a colorant with a dye, and is a color filter effective for improving image quality.

In addition, the color filter 1 according to this embodiment is a method for manufacturing a color filter according to the first embodiment of the present invention. In the stage of sequentially forming a coloring pattern of each color, the coloring containing a coloring agent having poor heat resistance is adjusted The pattern is produced in the order of formation of a colored pattern containing a compound that is liable to transfer dye, and it is a color filter that has reduced the problem of heat resistance and the problem of transfer dye.

In the present invention, a filter for cutting off ultraviolet rays and a filter for cutting off or coloring infrared rays may be added.

Furthermore, in the color filter 1 of this embodiment, after the protective film 5 is formed, if necessary, an electrode made of ITO or the like and an alignment film for liquid crystal alignment (not shown in FIG. 1) may be provided. Icon). The alignment film system can be formed using a well-known liquid crystal alignment agent.

In addition, the color filter of this embodiment can be used in addition to a liquid crystal display element as a color filter for color separation of a solid-state imaging element, a color filter for an organic EL display element, and the like.

[Example]

Examples are given below to explain the embodiments of the present invention more specifically. However, the present invention is not limited by the following examples.

<Preparation of pigment dispersion liquid> Modulation example 1

15 parts by mass of a red pigment represented by the following formula as a colorant, 12.5 parts by mass (solid content concentration of 40% by mass) of BYK-LPN21116 (manufactured by BYK Chemical (BYK)) as a dispersant, and 72.5 parts by mass as a solvent The propylene glycol monomethyl ether acetate was processed by a bead mill to prepare a pigment dispersion liquid (r-1).

Modulation example 2

A pigment dispersion liquid (g-1) was prepared in the same manner as in Preparation Example 1 except that C.I. Pigment Green 59 was used instead of the red pigment represented by the above formula in Preparation Example 1.

Modulation example 3

A pigment dispersion liquid (b-1) was prepared in the same manner as in Preparation Example 1 except that C.I. Pigment Blue 15: 6 was used in place of the red pigment represented by the above formula.

<Preparation of colored composition> Modulation example 4

350 parts by mass of the pigment dispersion liquid (r-1) as a colorant, 10 parts by mass of Cya-1 as a dye, 10 parts by mass of Cr-1 as a matting agent, and 60 parts by mass of C-1 as a binder resin, 40 parts by mass of M-402 (a mixture of dipentaerythritol hexaacrylate and dipentaerythritol pentaacrylate) manufactured by Toa Synthesis Co., Ltd. as a polymerizable compound, and 10 parts by mass of 2-benzyl-2 as a photopolymerization initiator -Dimethylamino-1- (4-morpholinylphenyl) butan-1-one (manufactured by CIBA Specialty Chemicals, trade name IRGACURE 369) and 10 parts by mass of NCI-930 (manufactured by ADEKA Corporation ), 2.5 parts by mass of Megafac F-554 (manufactured by DIC Corporation) as a fluorine-based surfactant, and propylene glycol monomethyl ether acetate as a solvent, a colored composition (Red- 1). Cya-1 and Cr-1 are described later.

Modulation example 5 ~ 20

Except that in Preparation Example 4, the types of pigment dispersion liquid, dye, and matting agent used were changed as shown in Table 1 below. Similarly, the colored compositions (Red-2) to (Red-4) and (Red-0), (Green-0) to (Green-3), and (Blue-0) to (Blue-7) were prepared.

In Table 1, each component is as follows.

<Dye>

Cya-1: Compound (cyanine dye) represented by formula (g-1) described in Example 1 of JP 2012-214718

Cya-2: "Polymer (2)" (cyanine dye polymer) obtained in accordance with Synthesis Example 2 of Japanese Patent Application Laid-Open No. 2015-178604

Xan-1: Compound (A3) described in International Publication No. 2014/196660 ( dye)

Xan-2: "Dye (A2)" obtained in accordance with Synthesis Example 2 of Japanese Patent Application Laid-Open No. 2011-039317 ( dye)

Cou: Compound (coumarin dye) represented by formula (C-PT) described in Synthesis Example 2 of Japanese Patent Application Laid-Open No. 2015-091947

Sty: "Exemplary compound 1" (styrene-based dye) obtained in accordance with Example 1 of Japanese Patent Application Laid-Open No. 2014-152251

Dip: Exemplified compound III-1 (dipyrromethene dye) described in Chemical Formula 54 of Japanese Patent No. 5085256

Tri-1: "Exemplary compound (1)" (triarylmethane dye) described in Japanese Patent Application Laid-Open No. 2012-072205

Tri-2: "Polymer (3)" (triarylmethane dye polymer) obtained in accordance with Synthesis Example 3 of Japanese Patent Application Laid-Open No. 2015-178604

<Matting agent>

Cr-1: Compound (Cr complex compound) represented by formula (z-2) described in Synthesis Example 1 of International Publication No. 2014/196660

Cr-2: Compound (Cr complex compound) represented by the following formula (Cr-2)

Ni-1: Trade name ADS845MC (manufactured by American Dye Source. Ni complex compound)

Pht-1: Compound (phthalocyanine compound) obtained in accordance with Example 1 of Japanese Patent No. 5814120

TAP: Compound (tetraazaporphyrin compound) represented by formula (2-29) described in paragraph [0057] of Japanese Patent Application Laid-Open No. 2014-5451

Ant-1: C.I. Solvent Blue 45 (Anthraquinone Compound)

Pht-2: C.I. Solvent Blue 70 (phthalocyanine compound)

Ant-2: Compound of Chemical Formula 2 (Anthraquinone compound having a polymerizable group) described in Japanese Patent Application Laid-Open No. 2008-015530

The binder resin C-1 has the following repeating units (repeating units of unsaturated carboxylic acids) synthesized according to the method described in "Synthesis of Resin (B-1)" in International Publication No. 2014/192973. The reaction product of an alkali-soluble resin with a repeating unit of an unsaturated compound having an epoxy group) and methacrylic acid is an alkali-soluble resin having a methacryloxy group in a side chain.

<Creation and Evaluation of a Substrate with a Monochrome Filter> Reference example 1

On a soda glass substrate having a SiO ₂ film preventing the elution of sodium ions on the surface, the colored composition (Red-0) was applied using a spin coater, and then pre-baked on a hot plate at 90 ° C for 2 minutes. Form a coating film. By changing the number of rotations of the spin coater, three coating films having different film thicknesses were formed by the same operation.

After the coating films were cooled to room temperature, the coating films were exposed to radiation at wavelengths of 365 nm, 405 nm, and 436 nm at an exposure amount of 400 J / m ² using a high-pressure mercury lamp without passing through a mask. With respect to these coating films, a developing solution made of a 0.04 mass% potassium hydroxide aqueous solution at 23 ° C. was discharged at a developing pressure of 1 kgf / cm ² (nozzle diameter 1 mm), and spray development was performed for 90 seconds. . Then, these were washed with ultrapure water, and after air-drying, they were post-baked in a clean oven at 230 ° C. for 30 minutes to form three substrates with a monochrome filter.

Evaluation of the brightness of monochrome filters

For the above three substrates, a color analyzer (LCF-1100A, manufactured by Otsuka Electronics Co., Ltd.) was used to measure the stimulus value (Y) of the following chromaticity coordinates in the CIE color system, namely brightness, using a C light source and a 2 degree field of view . Let the brightness at this time be Y _R. In addition, when the chromaticity is shifted, a colored composition is prepared in which the ratio of the pigment dispersion liquid and the dye is suitably changed, the chromaticity is measured, a calibration curve is drawn, and the brightness at a desired chromaticity is calculated.

In the case of a red filter: Rx = 0.671, Ry = 0.324

Case of green filter: Gx = 0.300, Gy = 0.590

Case of blue filter: Bx = 0.140, By = 0.098

Reference example 2

Except that the coloring composition (Green-0) was used instead of the coloring composition (Red-0) in Reference Example 1, three substrates having a single-color filter were prepared in the same manner as in Reference Example 1, followed by reference. Example 1 The brightness was measured in the same manner. Let the brightness at this time be Y _G.

Reference example 3

Except that the coloring composition (Blue-0) was used instead of the coloring composition (Red-0) in Reference Example 1, the same procedure as in Reference Example 1 was used instead, and three substrates having a monochromatic filter were prepared. Example 1 The brightness was measured in the same manner. Let the brightness at this time be Y _B.

<Creation and evaluation of a substrate with a two-color filter> Reference example 4

On a soda glass substrate having a SiO ₂ film preventing the elution of sodium ions on the surface, the colored composition (Red-0) was applied using a spin coater, and then pre-baked on a hot plate at 90 ° C for 2 minutes. A coating film having a film thickness of 2.4 μm was formed. After the substrate was cooled to room temperature, the coating film was exposed to radiation with wavelengths of 365 nm, 405 nm, and 436 nm at an exposure amount of 400 J / m ² through a mask using a high-pressure mercury lamp. A developing solution made of a 0.04 mass% potassium hydroxide aqueous solution at 23 ° C. was sprayed on the substrate at a developing pressure of 1 kgf / cm ² (nozzle diameter 1 mm), and spray development was performed for 90 seconds. Then, the substrate was washed with ultrapure water, and after air-drying, it was further post-baked in a clean oven at 230 ° C for 30 minutes to form a substrate with a first square filter having a substantially square shape of 3 cm × 3 cm .

Next, the coloring composition (Green-0) was applied on the substrate on which the first filter was formed, and then prebaked on a hot plate at 90 ° C for 2 minutes to form a film thickness of 2.4 μm. Coating. After the substrate was cooled to room temperature, a high-pressure mercury lamp was used to expose the coating film to radiation at a wavelength of 365 nm, 405 nm, and 436 nm at an exposure amount of 400 J / m ² without passing through the mask. With respect to this substrate, a developing solution made of a 0.04 mass% potassium hydroxide aqueous solution at 23 ° C. was discharged at a developing pressure of 1 kgf / cm ² (nozzle diameter 1 mm). Then, the substrate was washed with ultrapure water, and after air-drying, a substrate having a second filter on the first filter was prepared by post-baking in a clean oven at 230 ° C for 30 minutes.

A color analyzer (LCF-1100A, manufactured by Otsuka Electronics Co., Ltd.) was used to measure the CIE meter at a slightly central portion of an area where the first filter and the second filter of the substrate overlap. The stimulus value (Y) of the second filter (chromaticity coordinate system is the same as above) in the color system, that is, the brightness.

<Manufacturing and Evaluation of Color Filters with 3-Color Filters> Manufacturing example A-1

On a soda glass substrate on which a SiO ₂ film for preventing the elution of sodium ions was formed on the surface, a coloring composition (Green-0) as a first coloring composition was applied using a spin coater, and then performed on a hot plate at 90 ° C. 2 Pre-baking for one minute to form a coating film with a film thickness of 2.4 μm. After the substrate was cooled to room temperature, the coating film was exposed to radiation with wavelengths of 365 nm, 405 nm, and 436 nm at an exposure amount of 400 J / m ² through a mask using a high-pressure mercury lamp. A developing solution made of a 0.04 mass% potassium hydroxide aqueous solution at 23 ° C. was sprayed on the substrate at a developing pressure of 1 kgf / cm ² (nozzle diameter 1 mm), and spray development was performed for 90 seconds. Then, the substrate was washed with ultrapure water, and after air-drying, a green first filter was made on the substrate by post-baking in a clean oven at 230 ° C for 30 minutes.

Next, the coloring composition (Blue-0) as the second coloring composition was applied to the substrate on which the green filter was formed, and then prebaked on a hot plate at 90 ° C. for 2 minutes. A coating film having a thickness of 2.4 μm was formed. After the substrate was cooled to room temperature, the coating film was exposed to radiation with wavelengths of 365 nm, 405 nm, and 436 nm at an exposure amount of 400 J / m ² through a mask using a high-pressure mercury lamp. A developing solution made of a 0.04 mass% potassium hydroxide aqueous solution at 23 ° C. was sprayed on the substrate at a developing pressure of 1 kgf / cm ² (nozzle diameter 1 mm), and spray development was performed for 90 seconds. Then, the substrate was washed with ultrapure water, and after air-drying, it was post-baked in a clean oven at 230 ° C for 30 minutes to form a blue with a second filter formed next to the green filter. Substrate for color filters.

Subsequently, the coloring composition (Red-0) as the third coloring composition was applied on the substrate on which the green filter and the blue filter were formed by using a spin coater, and then performed on a hot plate at 90 ° C. for 2 hours. Pre-baking for one minute to form a coating film with a film thickness of 2.4 μm. After the substrate was cooled to room temperature, the coating film was exposed to radiation with wavelengths of 365 nm, 405 nm, and 436 nm at an exposure amount of 400 J / m ² through a mask using a high-pressure mercury lamp. A developing solution made of a 0.04 mass% potassium hydroxide aqueous solution at 23 ° C. was sprayed on the substrate at a developing pressure of 1 kgf / cm ² (nozzle diameter 1 mm), and spray development was performed for 90 seconds. Then, the substrate was washed with ultrapure water, air-dried, and then post-baked in a clean oven at 230 ° C for 30 minutes. In this way, a color filter is formed in which a green first filter, a blue second filter, and a red third filter are formed. Think of this as a color filter (CF-A).

Evaluation 1: Evaluation of brightness

The brightness of the first filter included in the color filter (CF-A) was evaluated by the following method. First, in the same manner as in Reference Example 1, except that the coloring composition (Red-0) of Reference Example 1 was used, and the first coloring composition used in Production Example A-1 was used, three sheets having a monochromatic filter were prepared. Substrate. Next, the three substrates were post-baked for 30 minutes in a clean oven at 230 ° C (the first additional baking). After cooling to room temperature, post-baking (the second additional baking) was performed again in a clean oven at 230 ° C for 30 minutes. Using the color analyzer (LCF-1100A, manufactured by Otsuka Electronics Co., Ltd.) for the three additional substrates that have been baked twice, the following chromaticity coordinates in the CIE color system were measured using a C light source and a 2 degree field of view. The stimulus value (Y) is the brightness. Let the brightness at this time be Y ₁ .

(Y ₁ -Y _X ) × 100 / Y _X (However, Y _X represents Y _R when the first filter is a red filter, and Y represents when the first filter is a green filter. _G , which represents Y _B when the first filter is a blue filter) The value obtained is defined as the brightness increase rate (%) of the first filter, and the brightness increase rate of the first filter is "A" when it is + 1.0% or more, "B" when it is 0.0% or more and less than + 1.0%, "C" when it is -0.5% or more and less than 0.0%, and when it is less than -0.5% "D". The results are shown in Table 2. The larger the brightness increase rate of the first filter is, the higher the brightness is when the first filter does not contain a dye.

Next, the brightness of the second filter included in the color filter (CF-A) was evaluated by the following method. First, in the same manner as in Reference Example 1, except that the coloring composition (Red-0) in Reference Example 1 was used, and the second coloring composition used in Production Example A-1 was used, 3 having a monochromatic filter was prepared. Sheet substrate. Next, the three substrates were post-baked in a clean oven at 230 ° C. for 30 minutes (the first additional baking). Using the color analyzer (LCF-1100A, manufactured by Otsuka Electronics Co., Ltd.) for the three additional substrates that have been baked once, the following chromaticity coordinates in the CIE color system were measured using a C light source and a 2 degree field of view. The stimulus value (Y) is the brightness. Let the brightness at this time be Y ₂ .

(Y ₂ -Y _Y ) × 100 / Y _Y (However, Y _Y represents Y _R when the second filter is a red filter, and Y represents when the second filter is a green filter. _G , which represents Y _B when the second filter is a blue filter) The value obtained is defined as the brightness increase rate (%) of the second filter, and the brightness increase rate of the second filter "A" when it is + 1.0% or more, "B" when it is 0.0% or more and less than + 1.0%, "C" when it is -0.5% or more and less than 0.0%, and when it is less than -0.5% "D". The results are shown in Table 2. The larger the brightness increase rate of the second filter means that the brightness is higher when the second filter does not contain a dye.

The brightness of the third filter included in the color filter (CF-A) was evaluated by the following method. First, except that the coloring composition (Red-0) in Reference Example 1 was used and the third coloring composition used in Production Example A-1 was used, 3 was prepared in the same manner as in Reference Example 1 with a monochromatic filter. Sheet substrate. Next, the brightness was measured in the same manner as in Reference Example 1. Let the brightness at this time be Y ₃ .

(Y ₃ -Y _Z ) × 100 / Y _Z (However, Y _Z represents Y _R when the third filter is a red filter, and Y represents when the third filter is a green filter. _G , which represents Y _B when the third filter is a blue filter) The value obtained is defined as the brightness increase rate (%) of the third filter, and the brightness increase rate of the third filter It is evaluated as "A" when it is + 1.0% or more, as "B" when it is 0.0% or more and less than + 1.0%, and as "C" when it is less than 0.0%. The results are shown in Table 2. The larger the brightness increase rate of the third filter means that the brightness is higher when the third filter does not contain a dye.

Evaluation 2: Evaluation of transferability

Except that the coloring composition (Red-0) and the coloring composition (Green-0) in Reference Example 4 were used, the first coloring composition and the second coloring composition used in Production Example A-1 were used. 4 Similarly, a substrate having a second filter on the first filter is prepared. Next, the brightness was measured in the same manner as in Reference Example 4. Let the brightness at this time be Y ₁₂ .

In addition, instead of the coloring composition (Red-0) and the coloring composition (Green-0) in Reference Example 4, the second coloring composition and the third coloring composition used in Production Example A-1 were used, and In the same manner as in Reference Example 4, a substrate having a third filter on the second filter was prepared. Next, the brightness was measured in the same manner as in Reference Example 4. Let the brightness at this time be Y ₂₃ .

When the value (%) calculated by (Y ₂ -Y ₁₂ ) × 100 / Y ₂ is less than 3%, it is evaluated as "A", when it is 3% or more and less than 5%, it is evaluated as "B", and as 5% or more The evaluation is "C". The smaller this value is, the less the component contained in the first filter is transferred to the second filter. The evaluation results are shown in the "Evaluation 2-1" column in Table 2 below.

Next, the value (%) calculated by (Y ₃ -Y ₂₃ ) × 100 / Y ₃ is evaluated as "A" when the value (%) is less than 3%, and "B" when it is 3% or more and less than 5%, and 5 When it is above%, it is evaluated as "C". The smaller this value is, the less the component contained in the second filter is transferred to the third filter. The evaluation results are shown in the "Evaluation 2-2" column of Table 2 below.

Manufacturing example A-2 ~ A-6

A color filter was produced in the same manner as in Production Example A-1, except that those described in Table 2 below were used as the first to third coloring compositions in Production Example A-1, and then the same as in Production Example A-1. Evaluate. The results are shown in Table 2 below.

Manufacturing examples B-1 to B-6

A color filter was produced in the same manner as in Production Example A-1, except that those described in Table 3 below were used as the first to third coloring compositions in Production Example A-1, and then the same as in Production Example A-1. Evaluate. The results are shown in Table 3 below. Production examples B-5 and B-6 are examples.

Manufacturing Examples C-1 to C-6

A color filter was produced in the same manner as in Production Example A-1, except that those described in Table 4 below were used as the first to third coloring compositions in Production Example A-1, and then the same as in Production Example A-1. Evaluate. The results are shown in Table 4 below. The production examples C-2 and C-3 are examples.

Manufacturing examples D-1 to D-10

A color filter was produced in the same manner as in Production Example A-1, except that those described in Table 5 below were used as the first to third coloring compositions in Production Example A-1, and then the same as in Production Example A-1. Evaluate. The results are shown in Table 5 below. The manufacturing examples D-1 to D-10 are all examples.

Manufacturing examples E-1 to E-6

A color filter was produced in the same manner as in Production Example A-1, except that those described in Table 6 below were used as the first to third coloring compositions in Production Example A-1, and then the same as in Production Example A-1. Evaluate. The results are shown in Table 6 below.

Manufacturing examples F-1 to F-6

Except that in Production Example A-1, those described in Table 7 below were used as the first to third coloring compositions, the color was similar to that in Production Example A-1. The color filter was then evaluated in the same manner as in Production Example A-1. The results are shown in Table 7 below. Production examples F-2, F-3, F-5, and F-6 are examples.

Manufacturing examples G-1 to G-4

A color filter was produced in the same manner as in Production Example A-3, except that those described in Table 8 below were used as the first to third coloring compositions in Production Example A-3, and then the same as in Production Example A-3. Evaluate. The results are shown in Table 8. The manufacturing examples G-1 to G-4 are all examples.

In the above Tables 2 to 8, "A" of each evaluation result is regarded as 2 points, "B" is regarded as 1 point, "C" is regarded as 0 point, and "D" is regarded as- It is calculated at one point, and the total of each evaluation result is displayed in the comprehensive evaluation column. The higher the number of points in the comprehensive evaluation, the more balanced the balance between the magnitude of the brightness increase rate and the lowness of the brightness decrease rate. The "comprehensive evaluation" is a relative evaluation of the manufacturing examples described in each table, and is not used for comparison with the manufacturing examples described in different tables.

<Manufacturing and Evaluation of Color Filters for Color Resolution of Solid-State Photographic Elements> Manufacturing example H

The dyeing was carried out in the same manner as in Preparation Example 13 except that Dye was used as the dye in Preparation Example 13 as "Dye 2" (dipyrromethene dye polymer) described in Chem. Composition (Blue-8).

On a 6-inch silicon wafer, a photoresist for a planarization film (HL-18s: manufactured by Nippon Steel Chemical Co., Ltd.) was applied by a spin coating method as a pre-bake, and was heated on a hot plate at 100 ° C. for 6 minutes. Furthermore, the coated film was cured in an oven at 230 ° C. for 1 hour to form a flat film of 1.0 μm, and a wafer with a flat film was obtained.

A coloring composition (Green-0) as a first coloring composition was applied to a wafer with a flattening film by a spin coating method, as a pre-baking, and heat-treated on a hot plate at 100 ° C. for 1 minute. It adjusted so that the film thickness after prebaking might become 0.9 micrometers.

Next, using an i-line stepping exposure device FPA-3000i5 + (manufactured by Canon), pattern exposure was performed at an exposure amount of 150 mJ / cm ² through a mask for forming a green pixel of 1.0 μm square at a wavelength of 365 nm. .

The coating film after exposure was subjected to liquid-covering development with an organic alkali developing solution for 1 minute. After the liquid coating was developed, it was sprayed with a spin for 20 seconds, rinsed with pure water, and washed more purely for 20 seconds. Then, the high-pressure air blows away the remaining water droplets on the wafer to dry the substrate naturally, and then heat-processes on a hot plate with a surface temperature of 230 ° C for 5 minutes to form a square pixel pattern. The film thickness of the green pixels after the heat treatment was 0.80 μm. In this way, a green first filter is prepared.

Next, using the coloring composition (Blue-8) as the second coloring composition, a second blue filter was formed in the same manner as the first filter. Furthermore, a red color filter was formed using the coloring composition (Red-1) as the third coloring composition. In this manner, a color filter for color separation for a solid-state imaging element was obtained.

The color filter system for a solid-state imaging element produced in this manner is very excellent in spectral characteristics.

[Industrial availability]

The color filter of the present invention has excellent color characteristics and excellent reliability. Therefore, the color filter of the present invention is applicable to color filters for color separation of solid-state imaging elements, color filters for organic EL display elements, and color filters for flexible displays such as electronic paper. Particularly suitable for clocks, portable game consoles, word processors, notebook personal computers, navigation systems, video cameras, PDAs, digital cameras, mobile phones, smart phones, various monitors, LCD TVs, information displays, etc. Various display devices.

1‧‧‧ color filter

2‧‧‧ substrate

3‧‧‧ Filter

4‧‧‧ Black Matrix

5‧‧‧ protective film

Claims (9)

A method for manufacturing a color filter, which is a method for manufacturing a color filter having at least three colors, which includes, in order, a step of forming a first coloring pattern corresponding to the first color using a first coloring composition, A step of forming a second colored pattern corresponding to the second color using the second colored composition, and a step of forming a third colored pattern corresponding to the third color using the third colored composition, the third color being red or Green, this third coloring composition contains a coloring agent containing a dye and a polymerizable compound. The method for manufacturing a color filter according to claim 1, wherein the dye is a fluorescent dye contained in the third coloring composition. The method for manufacturing a color filter according to claim 1 or 2, wherein the dye contained in the third coloring composition contains a member selected from the group consisting of coumarin dye, styryl dye, (xanthene) at least one of the group consisting of dyes and cyanine dyes. The method for manufacturing a color filter according to claim 1 or 2, wherein the content of the dye is 1% by mass or less with respect to the entire solid content of the second coloring composition. The method for manufacturing a color filter according to claim 1 or 2, wherein the first coloring composition contains a material selected from the group consisting of At least one of the group consisting of a dye and a dipyrromethene dye. The method for manufacturing a color filter according to claim 1 or 2, wherein the red filter includes a material selected from Dye and cyanine dye, at least one kind of metal complex compound. The method for manufacturing a color filter according to claim 1 or 2, wherein the green filter includes at least one kind of metal complex compound selected from the group consisting of a coumarin dye and a styryl dye. The method for manufacturing a color filter according to claim 1 or 2, wherein the color filter has a blue filter, and the blue filter includes a component selected from the group consisting of At least one kind of a dye, a triarylmethane dye, and a dipyrromethene dye and at least one kind selected from a tetraazaporphyrin compound, an anthraquinone compound, and a phthalocyanine compound. The method for manufacturing a color filter according to claim 1 or 2 is for a color filter for color separation of a solid-state imaging element.