JP2015206872A - Method for manufacturing laminate, method for manufacturing color filter, laminate, and color filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminate and a method for manufacturing a laminate that can be manufactured through a simple process, in which mixing of structural components in two resin layers can be suppressed when a plurality of patterned resin layers are laminated.SOLUTION: The method for manufacturing a laminate includes: a first resin composition layer formation step of forming a first resin composition layer on a substrate; a second resin composition layer formation step of forming a second resin composition layer on the first resin composition layer by using a solvent-free photo-curable resin composition that is developable with the same developer used for the first resin composition included in the first resin composition layer; and a patterning step of exposing the first resin composition layer and the second resin composition layer along a pattern and developing and heating them by using the same developer to form the first resin layer and the second resin layer in the same pattern.

Description

  The present invention relates to a method for manufacturing a laminate in which a plurality of patterned resin layers are stacked, and a method for manufacturing a color filter using the same.

In various devices such as display devices and touch panels, those having a structure in which a plurality of patterned resin layers are laminated are known. As a method for patterning a resin layer, a photolithography method using a photosensitive resin composition Is widely used.
For example, Patent Document 1 discloses a method for manufacturing a color filter forming substrate, in which a reflection control layer is formed on a transparent substrate by a photolithography process, and then a light shielding layer is formed on the reflection control layer by a photolithography process. .

  In the case of laminating a plurality of patterned resin layers, if each resin layer is patterned by photolithography, a mask is required for each resin layer, and alignment is necessary, so there are many steps. There is a problem that it is complicated and requires manufacturing costs.

  On the other hand, in order to solve the above problems, a method of simultaneously patterning a plurality of resin layers is also conceivable. However, the resin layer is often formed by applying a photosensitive resin composition. In this case, when the second photosensitive resin composition is applied onto the first photosensitive resin composition layer, the resin layer is formed. There is a problem that the constituent components of the first photosensitive resin composition layer are eluted by the solvent in the second photosensitive resin composition, so that lamination is difficult. In addition, when the constituent components of the first photosensitive resin composition layer are eluted, the constituent components of the two photosensitive resin composition layers are mixed, and the two resin layers exhibit their functions sufficiently. There is also a problem that it cannot be done.

International Publication No. 2013/008679 Pamphlet

  The present invention has been made in view of the above problems, and when a plurality of patterned resin layers are laminated, the mixing of the constituent components of the two resin layers can be suppressed and can be manufactured by a simple process. Main object of the present invention is to provide a method for producing a laminate, a method for producing a color filter, a laminate, and a color filter.

  In order to achieve the above object, the present invention provides a first resin composition layer forming step of forming a first resin composition layer on a substrate, and the first resin composition layer on the first resin composition layer. The second resin composition layer forming step of forming a second resin composition layer using a solvent-free photocurable resin composition that can be developed with the same developer as the first resin composition contained in the layer The first resin composition layer and the second resin composition layer are exposed in a pattern, developed using the same developer, and heated to form the first resin layer and the second resin in the same pattern. It has a patterning process which forms a resin layer, and provides a manufacturing method of a layered product characterized by things.

  According to the present invention, since the second resin composition layer is formed using a solventless photocurable resin composition, the second resin composition layer can be easily laminated on the first resin composition layer. In addition, the first resin composition layer and the second resin composition layer can be patterned in one photolithography process. Therefore, a plurality of masks are not required, it is not necessary to consider alignment accuracy, the number of processes can be reduced, and manufacturing costs can be reduced. According to the present invention, since the solvent-free photocurable resin composition is used for the second resin composition layer, the first resin is formed when the second resin composition layer is laminated on the first resin composition layer. Mixing of the composition layer and the second resin composition layer can be suppressed. Therefore, it is possible to suppress the deterioration of the functions of the first resin layer and the second resin layer.

  In the said invention, it is preferable to paste the dry film containing the said solvent-free photocurable resin composition on the said 1st resin composition layer at the said 2nd resin composition layer formation process. The second resin composition layer can be easily laminated on the first resin composition layer, and when the second resin composition layer is laminated on the first resin composition layer, the first resin composition layer and It is because it can prevent mixing with the 2nd resin composition layer.

  In the present invention, it is preferable that the first resin layer is a reflection control layer and the second resin layer is a light shielding layer. In this case, the laminate manufacturing method of the present invention can be applied to a color filter manufacturing method and a cover glass manufacturing method.

  The present invention also provides a resin composition layer forming step for forming a reflection control layer on a transparent substrate, and the resin for reflection control layer on the resin composition layer for reflection control layer. For the light-shielding layer, which can be developed with the same developer as the resin composition for the reflection control layer contained in the composition layer, and forms the resin composition layer for the light-shielding layer using a solvent-free photocurable resin composition The resin composition layer forming step, the reflection control layer resin composition layer and the light shielding layer resin composition layer are exposed in a pattern, developed using the same developer, heated, and the same pattern A color filter comprising: a patterning step of forming a reflection control layer and a light shielding layer in a shape; and a colored layer forming step of forming a plurality of colored layers in the openings of the light shielding layer on the transparent substrate. A manufacturing method is provided.

  According to the present invention, since the resin composition layer for the light shielding layer is formed using the solventless photocurable resin composition, the resin composition layer for the light shielding layer can be easily formed on the resin composition layer for the reflection control layer. The resin composition layer for the reflection control layer and the resin composition layer for the light shielding layer can be patterned in one photolithography process. Therefore, a plurality of masks are not required, it is not necessary to consider alignment accuracy, the number of processes can be reduced, and manufacturing costs can be reduced. Further, according to the present invention, since the solvent-free photocurable resin composition is used for the light shielding layer resin composition layer, the light shielding layer resin composition layer is laminated on the reflection control layer resin composition layer. It is possible to prevent the resin composition layer for the reflection control layer and the resin composition layer for the light shielding layer from being mixed together. Therefore, it is possible to suppress the deterioration of the functions of the reflection control layer and the light shielding layer.

  In the said invention, the dry film containing the said solvent-free photocurable resin composition is bonded on the said resin composition layer for reflection control layers in the said resin composition layer formation process for light shielding layers. Is preferred. The resin composition layer for the light shielding layer can be easily laminated on the resin composition layer for the reflection control layer, and also reflected when the resin composition layer for the light shielding layer is laminated on the resin composition layer for the reflection control layer. It is because it can prevent mixing the resin composition layer for control layers, and the resin composition layer for light shielding layers.

  The present invention also provides a substrate, a first resin layer formed in a pattern on the substrate, a first resin layer formed in the same pattern as the first resin layer on the first resin layer, and containing a dye. A laminate having two resin layers is provided.

  According to the present invention, since the second resin layer contains a dye and can be formed using a solvent-free resin composition, the first resin layer and the second resin layer are formed at the time of forming the second resin layer. Can be mixed. Therefore, it is possible to suppress the deterioration of the functions of the first resin layer and the second resin layer.

  In the said invention, it is preferable that the said 1st resin layer is a reflection control layer, and the said 2nd resin layer is a light shielding layer. In this case, the laminate of the present invention can be applied to a color filter or a cover glass.

  The present invention also provides a transparent substrate, a reflection control layer formed in a pattern on the transparent substrate, and a resin layer, and a resin layer formed on the reflection control layer in the same pattern as the reflection control layer. And providing a color filter comprising a light-shielding layer containing a dye and a plurality of colored layers formed in openings of the light-shielding layer on the transparent substrate.

  According to the present invention, since the light shielding layer is a resin layer and contains a dye, it can be formed using a solvent-free resin composition, and therefore the reflection control layer and the light shielding layer are mixed when the light shielding layer is formed. Can be suppressed. Therefore, it is possible to suppress the deterioration of the functions of the reflection control layer and the light shielding layer.

  In the present invention, the first resin layer and the second resin layer can be formed in a pattern by a single photolithography process, and the first resin layer and the second resin layer are prevented from being mixed to deteriorate the function. There is an effect that can be suppressed.

It is process drawing which shows an example of the manufacturing method of the laminated body of this invention. It is process drawing which shows an example of the manufacturing method of the cover glass of this invention. It is a schematic sectional drawing which shows an example of the cover glass of this invention. It is a schematic sectional drawing which shows the other example of the cover glass of this invention. It is process drawing which shows an example of the manufacturing method of the color filter of this invention. It is a schematic diagram for demonstrating the measuring method of a reflectance. It is a schematic diagram for demonstrating reflected light. It is a schematic diagram for demonstrating the measuring method of the reflectance by a spectrocolorimeter. It is a schematic diagram for demonstrating the relationship between the external light and reflected light in the color filter of this invention. It is a graph which shows an example of the relationship between specific visibility and a wavelength. It is a graph which shows an example of the relationship between a refractive index and a wavelength. It is a schematic sectional drawing which shows an example of the color filter of this invention.

  Hereinafter, the production method of the laminate, the production method of the color filter, the laminate and the color filter of the present invention will be described in detail.

A. The manufacturing method of a laminated body of the present invention includes a first resin composition layer forming step of forming a first resin composition layer on a substrate, and the first resin composition layer on the first resin composition layer. A second resin composition that can be developed with the same developer as the first resin composition contained in the resin composition layer and that forms the second resin composition layer using a solvent-free photocurable resin composition The layer forming step, the first resin composition layer and the second resin composition layer are exposed in a pattern, developed using the same developer, and heated to form the first resin layer in the same pattern And a patterning step of forming the second resin layer.

The manufacturing method of the laminated body of this invention is demonstrated referring drawings.
1A to 1D are process diagrams showing an example of a method for producing a laminate according to the present invention. First, as shown to Fig.1 (a), the 1st resin composition is apply | coated on the board | substrate 1, and the 1st resin composition layer formation process which forms the 1st resin composition layer 2a is performed. Subsequently, as shown in FIG.1 (b), the dry film containing a solventless photocurable resin composition is bonded on the 1st resin composition layer 2a, and the 2nd resin composition layer 3a is formed. A second resin composition layer forming step is performed. The solventless photocurable resin composition used for the second resin composition layer 3a can be developed with the same developer as the first resin composition contained in the first resin composition layer 2a. . Next, as shown in FIG.1 (c), the 2nd resin composition layer 3a and the 1st resin composition layer 2a are exposed to pattern shape by irradiating the ultraviolet-ray 5 through the mask 4, and the same image development is carried out. The patterning process which develops with a liquid and heats although not shown in figure after that is performed. Thereby, as shown in FIG.1 (d), the 1st resin layer 2 and the 2nd resin layer 3 are formed in the same pattern shape.

According to the present invention, since the second resin composition layer is formed using a solventless photocurable resin composition, the second resin composition layer can be easily laminated on the first resin composition layer. In addition, the first resin composition layer and the second resin composition layer can be patterned in one photolithography process. Therefore, a plurality of masks are not required, it is not necessary to consider the alignment accuracy, the number of steps can be reduced, and the manufacturing cost can be reduced.
According to the present invention, since the solvent-free photocurable resin composition is used for the second resin composition layer, the first resin is formed when the second resin composition layer is laminated on the first resin composition layer. Mixing of the composition layer and the second resin composition layer can be prevented. Therefore, it is possible to suppress the deterioration of the functions of the first resin layer and the second resin layer.

  Hereinafter, each process in the manufacturing method of the laminated body of this invention is demonstrated.

1. 1st resin composition layer formation process In this invention, the 1st resin composition layer formation process which forms a 1st resin composition layer on a board | substrate is performed.

  The first resin composition contained in the first resin composition layer can be developed with the same developer as the solventless photocurable resin composition used in the second resin composition layer described below. There is no particular limitation.

The first resin composition may or may not have photocurability. Even in the case where the first resin composition does not have photocurability, in the patterning step described later, the patterned second resin composition layer functions as a mask, thereby patterning the first resin composition layer. can do.
Especially, it is preferable that the 1st resin composition has photocurability. It is because it can suppress that the side surface of the pattern of the 1st resin composition layer will be removed excessively at the time of image development in a patterning process. Moreover, the adhesiveness of a 1st resin layer and a board | substrate can be improved.

Specifically, a 1st resin composition is suitably selected according to the function of a 1st resin layer, the use of a laminated body, etc.
For example, as the first resin layer, a reflection control layer formed under the light shielding layer in the color filter, a reflection control layer provided under the black decorative layer in the cover glass, or a white decorative layer in the cover glass For this, a first resin composition containing a binder resin and a coloring material or a transparent first resin composition can be used. In this case, the first resin composition contains a photopolymerization initiator, a sensitizer, a coatability improver, a development improver, a crosslinking agent, a polymerization inhibitor, a plasticizer, a flame retardant, and the like as necessary. May be.
For example, when the low refractive index layer in the antireflection layer is formed as the first resin layer, a first resin composition containing a binder resin and fine particles can be used.
Moreover, the 1st resin composition may contain the solvent and may be solvent-free.

The method for forming the first resin composition layer is appropriately selected according to the composition of the first resin composition. For example, when the 1st resin composition contains a solvent, the method of apply | coating a 1st resin composition on a board | substrate is mentioned. Moreover, when the first resin composition is solvent-free, a method of applying the first resin composition on the substrate and a method of bonding a dry film containing the first resin composition on the substrate are mentioned. It is done.
The method for applying the first resin composition is not particularly limited as long as the first resin composition can be applied to the entire surface of the substrate. For example, a general method such as a spin coating method or a die coating method is adopted. can do.

  The film thickness of the first resin composition layer may be as long as the second resin composition layer can be laminated on the first resin composition layer, depending on the function of the first resin layer, the use of the laminate, and the like. Are appropriately selected.

  The substrate used in the present invention is not particularly limited as long as it can support the first resin layer and the second resin layer, and is appropriately selected according to the use of the laminate. Examples of the substrate include a transparent inorganic substrate having no flexibility such as quartz glass, Pyrex (registered trademark) glass, and synthetic quartz plate, and a transparent resin having flexibility such as a transparent resin film and an optical resin plate. A substrate etc. can be mentioned.

2. Second resin composition layer forming step In the present invention, the first resin composition layer can be developed with the same developer as the first resin composition contained in the first resin composition layer, The 2nd resin composition layer formation process which forms a 2nd resin composition layer using a solventless photocurable resin composition is performed.

  Here, “solvent free” means that the content of the solvent in the photocurable resin composition is 0.5% by mass or less. Especially, it is preferable that a solvent is not contained at all in a photocurable resin composition.

As the solventless photocurable resin composition used for the second resin composition layer, it can be developed with the same developer as the first resin composition contained in the first resin composition layer. It is not particularly limited.
Specifically, the solventless photocurable resin composition is appropriately selected according to the function of the second resin layer, the use of the laminate, and the like.
For example, when forming the light shielding layer in a color filter, the black decoration layer in a cover glass, or a light shielding layer as a 2nd resin layer, the photocurable resin composition containing binder resin and a coloring material can be used. In this case, the second resin composition contains a photopolymerization initiator and, if necessary, a sensitizer, a coatability improver, a development improver, a crosslinking agent, a polymerization inhibitor, a plasticizer, a flame retardant, and the like. It may be.
For example, when forming the insulating layer in a cover glass as a 2nd resin layer, the photocurable resin composition which has insulation can be used.
For example, when forming a high refractive index layer in the antireflection layer as the second resin layer, a photocurable resin composition containing a binder resin and fine particles can be used.

Examples of the method for forming the second resin composition layer include a method of applying a solventless photocurable resin composition on the first resin composition layer, and a solventless photocurable property on the first resin composition layer. The method of bonding the dry film containing a resin composition is mentioned. Especially, since lamination | stacking is easy, the method of bonding the dry film containing a solvent-free photocurable resin composition is preferable.
The method for applying the solventless photocurable resin composition is not particularly limited as long as it is a method that can apply the solventless photocurable resin composition to the entire surface of the first resin composition layer. General methods such as a coating method and a die coating method can be employed.

  The film thickness of the second resin composition layer may be as long as the second resin composition layer can be laminated on the first resin composition layer, depending on the function of the second resin layer, the use of the laminate, and the like. Are appropriately selected.

3. Patterning Step In the present invention, the first resin composition layer and the second resin composition layer are exposed in a pattern, developed using the same developer, and heated to form the first pattern in the same pattern. A patterning process for forming the resin layer and the second resin layer is performed.

Examples of the method of exposing the first resin composition layer and the second resin composition layer in a pattern include a method of irradiating light through a photomask and a method of directly drawing laser light.
The light applied to the first resin composition layer and the second resin composition layer may be light that can cure at least the second resin composition layer. For example, ultraviolet light is used.

  The developer used for development is not particularly limited as long as it can dissolve both the unexposed part of the first resin composition layer and the unexposed part of the second resin composition layer. Examples thereof include liquids and organic solvents. Among these, an alkaline developer is preferably used.

  Heating is performed after development. Since the solvent-free photocurable resin composition is used for the second resin composition layer, it is considered that the crosslinking density is relatively low and the adhesion is relatively weak, but the adhesion is improved by heating after development. be able to. Moreover, also when using a 1st resin composition without a solvent for a 1st resin composition layer, adhesiveness can be improved by heating. Heating conditions such as temperature and time are appropriately selected according to the functions of the first resin layer and the second resin layer, the use of the laminate, and the like.

  Further, the first resin composition layer and the second resin composition layer may be exposed from the substrate side after development and before heating. Thereby, a crosslinking density can be raised.

  The pattern shapes of the first resin layer and the second resin layer formed in the same pattern are appropriately selected according to the functions of the first resin layer and the second resin layer, the use of the laminate, and the like.

4). In the present invention, when the transmittance of at least one of the first resin composition layer and the second resin composition layer is low, alignment with the lower layer of the first resin composition layer becomes difficult There is. Therefore, in such a case, the first resin layer and the second resin layer are preferably members that do not require alignment with respect to the lower layer of the first resin layer. Specifically, the first resin layer is preferably a member that is disposed on the most substrate side among members formed in a pattern on the substrate in the laminate.

  The manufacturing method of the laminated body of this invention is applicable to various uses, such as a manufacturing method of a color filter, a cover glass, an antireflection layer, etc., for example. Specifically, in the method for producing a color filter, a method of forming a reflection control layer as the first resin layer and a light shielding layer as the second resin layer can be mentioned. Moreover, in the manufacturing method of a cover glass, the method of forming a reflection control layer as a 1st resin layer, a black decorative layer as a 2nd resin layer, a black decorative layer as a 1st resin layer, and an insulating layer as a 2nd resin layer And a method of forming a white decorative layer as the first resin layer and a light shielding layer as the second resin layer. Moreover, in the manufacturing method of an antireflection layer, the method of forming a high refractive index layer as a 1st resin layer and forming a low refractive index layer as a 2nd resin layer is mentioned.

  Especially, it is preferable that the manufacturing method of the laminated body of this invention is used for the manufacturing method of a color filter or the manufacturing method of a cover glass, and especially forms a reflection control layer as a 1st resin layer, and a light shielding layer as a 2nd resin layer. A method is preferred.

  Hereinafter, the manufacturing method of a color filter and the manufacturing method of a cover glass are demonstrated.

(1) Color Filter Manufacturing Method The color filter manufacturing method of the present invention is a method of forming a reflection control layer as the first resin layer and a light shielding layer as the second resin layer in the method of manufacturing the laminate of the present invention. .
The color filter manufacturing method will be described in detail in “B. Color filter manufacturing method”, which will be described later, and will not be described here.

(2) Manufacturing method of cover glass The manufacturing method of the cover glass in this invention is the method of forming a reflection control layer as a 1st resin layer and a black decoration layer as a 2nd resin layer in the manufacturing method of the laminated body of this invention. The first resin layer is a black decorative layer, the second resin layer is an insulating layer, or the first resin layer is a white decorative layer, and the second resin layer is a light shielding layer.

  2A to 2D are process diagrams showing an example of a method for producing a cover glass according to the present invention, in which a reflection control layer is formed as a first resin layer and a black decorative layer is formed as a second resin layer. It is an example. First, as shown in FIG. 2A, the resin composition layer for reflection control layer is formed by applying the resin composition for reflection control layer on the transparent substrate 21 to form the resin composition layer 22a for reflection control layer. Perform the process. Next, as shown in FIG. 2 (b), a dry film containing a solvent-free photocurable resin composition is bonded onto the resin composition layer 22a for the reflection control layer, and the resin composition for the black decorative layer is bonded. The black decorative layer resin composition layer forming step for forming the physical layer 23a is performed. The solvent-free photocurable resin composition used for the black decorative layer resin composition layer 23a is the same developer as the reflection control layer resin composition contained in the reflection control layer resin composition layer 22a. Can be developed. Next, as shown in FIG.2 (c), the ultraviolet ray 5 is irradiated through the mask 4, and the resin composition layer 22a for reflection control layers and the resin composition layer 23a for black decorating layers are exposed in a pattern form. Then, a patterning process is performed in which development is performed using the same developer and heating is performed. Thereby, as shown in FIG.2 (d), the reflection control layer 22 and the black decorating layer 23 are formed in the same pattern shape. In this way, the cover glass 20 is obtained.

In the above case, by stacking the reflection control layer and the black decorative layer, visibility and design can be improved when the cover glass is used for the touch panel. For example, it is possible to suppress external light reflection, make it difficult to visually recognize the boundary between the display area and the non-display area at the time of non-display, and improve the design.
In addition, the reflection control layer and the black decorative layer can be formed in a lump, reducing the number of steps and reducing the manufacturing cost.
Furthermore, when the resin composition layer for the black decorative layer is laminated, the resin composition layer for the reflection control layer and the resin composition layer for the black decorative layer can be prevented from being mixed, and color unevenness occurs. Can be suppressed.

In the case of a method of forming a black decorative layer as the first resin layer and an insulating layer as the second resin layer, as illustrated in FIG. 3, the black decorative layer 23 and the insulating layer 24 are formed on the transparent substrate 21. Can be collectively formed in the same pattern.
In this case, the cover glass is used for the touch panel when the black decorative layer contains a conductive black color material such as carbon black because the insulating layer is formed on the black decorative layer. In this case, conduction between the wiring and the black decorative layer can be prevented.
In addition, when the resin composition layer for the insulating layer is laminated, it is possible to suppress the mixing of the resin composition layer for the black decorative layer and the resin composition layer for the insulating layer. It can suppress that the insulation of a layer falls.

In the case of a method of forming a white decorative layer as the first resin layer and a light shielding layer as the second resin layer, as illustrated in FIG. 4, the white decorative layer 25 and the insulating layer 26 are formed on the transparent substrate 21. Can be collectively formed in the same pattern.
In this case, since the light shielding layer is formed on the white decorative layer, the white decorative layer can be easily recognized and the design can be improved.
In addition, when the resin composition layer for the light shielding layer is laminated, it is possible to suppress the mixing of the resin composition layer for the white decorative layer and the resin composition layer for the light shielding layer, and to prevent the occurrence of color unevenness. be able to.

  Hereinafter, about the manufacturing method of the cover glass of this invention, the method of forming a reflection control layer as a 1st resin layer, a black decoration layer as a 2nd resin layer, a black decoration layer as a 1st resin layer, as a 2nd resin layer A description will be given separately for a method of forming an insulating layer and a method of forming a white decorative layer as the first resin layer and a light shielding layer as the second resin layer.

(A) Method of Forming Reflection Control Layer as First Resin Layer and Black Decorating Layer as Second Resin Layer The method for producing the cover glass of this aspect is described in “B. Method for producing color filter” described below. The method may be the same as the method of forming the reflection control layer as the resin layer and the light shielding layer as the second resin layer.
The pattern shape of the reflection control layer and the light shielding layer can be the same as the pattern shape of a general decorative layer in a cover glass, and a frame shape can be exemplified.

(B) Method of forming a black decorative layer as the first resin layer and an insulating layer as the second resin layer For the method of forming the black decorative layer, the light shielding layer in “B. Color filter manufacturing method” described later is used. It can be the same as the method of forming.
Moreover, about the resin composition for insulating layers used for an insulating layer, the film thickness of an insulating layer, etc., it can be made to be the same as that of the general insulating layer in a cover glass.
The pattern shape of the black decorative layer and the insulating layer can be the same as the pattern shape of a general decorative layer in a cover glass, and a frame shape can be exemplified.

(C) Method of forming a white decorative layer as the first resin layer and a light shielding layer as the second resin layer About the resin composition for the white decorative layer used in the white decorative layer, the film thickness of the white decorative layer, and the like It can be the same as that of a general white decorative layer in a cover glass.
The method for forming the light shielding layer can be the same as the method for forming the light shielding layer in “B. Color filter manufacturing method” described later.
The pattern shape of the white decorative layer and the light shielding layer can be the same as the pattern shape of a general decorative layer in a cover glass, and a frame shape can be exemplified.

B. Method for Producing Color Filter The method for producing a color filter of the present invention comprises a resin composition layer forming step for a reflection control layer for forming a resin composition layer for a reflection control layer on a transparent substrate, and the resin composition for a reflection control layer. On the layer, it can be developed with the same developer as the resin composition for the reflection control layer contained in the resin composition layer for the reflection control layer, and for the light-shielding layer using a solvent-free photocurable resin composition. The resin composition layer forming step for the light shielding layer for forming the resin composition layer, the resin composition layer for the reflection control layer and the resin composition layer for the light shielding layer are exposed in a pattern, and the same developer is used. A patterning step of developing and heating to form a reflection control layer and a light shielding layer in the same pattern, and a color layer forming step of forming a plurality of colored layers in the openings of the light shielding layer on the transparent substrate, Have

  5A to 5E are process diagrams showing an example of a method for producing a color filter of the present invention. First, as shown in FIG. 5A, a resin composition layer for reflection control layer is formed by applying a resin composition for reflection control layer on a transparent substrate 11 to form a resin composition layer 12a for reflection control layer. Perform the process. Subsequently, as shown in FIG.5 (b), the dry film containing a solventless photocurable resin composition is bonded on the resin composition layer 12a for reflection control layers, and the resin composition layer for light shielding layers The resin composition layer formation process for light shielding layers which forms 13a is performed. The solventless photocurable resin composition used for the light shielding layer resin composition layer 13a is developed with the same developer as the reflection control layer resin composition contained in the reflection control layer resin composition layer 12a. It is possible. Next, as shown in FIG.5 (c), the resin composition layer 12a for reflection control layers and the resin composition layer 13a for light-shielding layers are exposed by patterning by irradiating the ultraviolet-ray 5 through the mask 4, A patterning process is performed in which development is performed using the same developer and heating is performed. Thereby, as shown in FIG. 5D, the reflection control layer 12 and the light shielding layer 13 are formed in the same pattern. Next, as shown in FIG. 5 (e), a red colored layer 16R, a green colored layer 16G, and a blue colored layer 16B are formed in patterns in the openings of the light shielding layer 13 on the transparent substrate 11, respectively. A colored layer forming step for forming 16 is performed.

  In the example shown in FIG. 5, both the pixel-shading light-shielding portion 14 that is formed in the display area 18 and demarcates the pixels and the frame light-shielding portion 15 that is formed in the non-display area 19 and demarcates the display area 18 are reflected. A laminated structure of the control layer 12 and the light shielding layer 13 is employed.

  According to the present invention, by laminating the reflection control layer and the light shielding layer, when the color filter of the present invention is used for a display device, reflection of external light can be suppressed, and visibility and design are improved. Can be made. For example, by stacking the reflection control layer and the light shielding layer in the pixel-shading light-shielding portion in the display area and the frame light-shielding portion in the non-display area, external light reflection can be suppressed and visibility during display can be improved. Further, by laminating the reflection control layer and the light shielding layer in the frame light shielding portion of the non-display area, it is possible to make it difficult to visually recognize the boundary between the display area and the non-display area during non-display and to improve the design. .

Further, according to the present invention, it is possible to suppress mixing of the resin composition layer for the reflection control layer and the resin composition layer for the light shielding layer when the resin composition layer for the light shielding layer is laminated, and color unevenness occurs. Or a reduction in the light shielding property of the light shielding layer can be suppressed.
Furthermore, the reflection control layer and the light shielding layer can be formed at a time, so that the number of steps can be reduced and the manufacturing cost can be reduced.

  Hereinafter, each process in the manufacturing method of the color filter of this invention is demonstrated.

1. Step of forming resin composition layer for reflection control layer In the method for producing a color filter of the present invention, a step of forming a resin composition layer for reflection control layer for forming a resin composition layer for reflection control layer on a transparent substrate is performed.

  The resin composition for the reflection control layer used for the resin composition layer for the reflection control layer is particularly limited as long as it can suppress external light reflection at the pixel-partitioning light-shielding part and the frame light-shielding part. For example, a material in which a coloring material is dispersed in a binder resin or a transparent material can be used.

As the color material, for example, color materials of each color such as black, red, green, blue, yellow, orange, and purple can be used. Either a pigment or a dye can be used as the color material, and it is appropriately selected according to the composition of the resin composition for the reflection control layer and the method for forming the resin composition layer for the reflection control layer. When the solventless resin composition for reflection control layer is applied on the transparent substrate, a dye is used. Also, when applying a resin composition for a reflection control layer containing a solvent on a transparent substrate, and when pasting a dry film containing a solvent-free resin composition for a reflection control layer on a transparent substrate Any of pigments and dyes can be used.
In addition, about the coloring material of each color, since it can be the same as that used for the solventless photocurable resin composition used for the below-mentioned light shielding layer and the resin composition for colored layers, description here Is omitted.

As the binder resin, for example, a photosensitive resin having a reactive vinyl group such as acrylate, methacrylate, polyvinyl cinnamate, or cyclized rubber is used.
The resin composition for a reflection control layer may contain a solvent or may be solventless.
In addition, the resin composition for the reflection control layer contains a photopolymerization initiator and, if necessary, a sensitizer, a coatability improver, a development improver, a crosslinking agent, a polymerization inhibitor, a plasticizer, a flame retardant, and the like. May be.

When the resin composition for a reflection control layer contains a color material such as red, green, and blue, a binder resin, and a solvent, the same resin composition for a colored layer that will be described later can be used. Moreover, when the resin composition for reflection control layers contains a black color material and a binder resin, a conventional resin composition for a light shielding layer in which the content of the black color material is reduced can be used. When the resin composition for the reflection control layer contains a black color material and a binder resin and is solvent-free, the black color material in the solvent-free photocurable resin composition used for the light shielding layer described later What reduced content of can be used.
Moreover, when the resin composition for reflection control layers is transparent, what remove | excluded the color material from what contains said color material and binder resin can be used.

  Here, the drop in visibility and design property is attributed to the fact that the reflectance of the light shielding layer is higher than the average reflectance of the colored layers of the respective colors. Therefore, it is preferable that the resin composition for a reflection control layer can reduce the difference between the reflectance of the reflection control layer and the average reflectance of the colored layer of each color. The reflectance can be evaluated by the brightness Y in the XYZ color system of JIS Z8701. Specifically, the absolute value of the difference (ΔY) between the brightness Y of the reflection control layer and the average brightness Y of the colored layers of each color is preferably 1.5 or less, more preferably 1 or less, particularly 1 It is preferable that it is less than. If the difference in brightness Y is large, it may be difficult to suppress external light reflection.

  Further, the deterioration in visibility and design is also affected by the difference between the shade of reflected light from the light shielding layer and the average shade of reflected light from the colored layers of each color. Therefore, it is more preferable that the resin composition for the reflection control layer can reduce the difference between the reflected light color of the reflection control layer and the average reflected light color of each color layer. The shade of reflected light can be evaluated by the color coordinates (x, y) in the XYZ color system of JISZ8701. Specifically, the absolute value of the difference (Δx, Δy) between each component of the color coordinate (x, y) of the reflection control layer and each component of the average color coordinate (x, y) of the colored layer of each color is Δx is 0.100 or less, preferably 0.050 or less, particularly 0.020 or less, and Δy is 0.100 or less, especially 0.050 or less, particularly preferably 0.020 or less. If the difference between the components of the color coordinates (x, y) is large, it may be difficult to suppress external light reflection.

Here, the reflection spectral characteristics of each layer can be measured using a microspectroscopic device OSP-SP2000 (manufactured by OLYMPUS).
Specifically, as illustrated in FIG. 6, first, a measurement reflection control layer or a measurement colored layer 52 is formed on the measurement substrate 51, and the measurement reflection control layer or the measurement colored layer 52 is used for measurement. A color filter substrate for measurement 50 arranged through a black plate 54 and a refractive index adjusting oil 53 is produced. Next, the reflectance is measured by irradiating the measurement color filter substrate 50 with the detection light 56 on the measurement substrate 51 side and detecting the reflected light of the detection light 56 with the detector 55.
The reflectance of the measurement substrate can be measured by using the measurement substrate disposed on the measurement black plate via the refractive index adjusting oil.
Based on the measured reflection spectral characteristics, chromaticity coordinates (x, y) and brightness Y in the XYZ color system of JIS Z8701 measured using a C light source can be obtained.

  In addition, the resin composition for the reflection control layer is preferably capable of forming a reflection control layer having an optical density lower than that of the light shielding layer, and the reflection control with an optical density of 2.0 or less at a unit thickness of 1 μm. More preferably, the layer can be formed. That the optical density of the reflection control layer is lower than the optical density of the light shielding layer can be said that the content of the color material contained in the reflection control layer is less than the content of the color material contained in the light shielding layer. . This means that the external light reflection from the reflection control layer is less bright than the external light reflection from the light shielding layer. This point will be briefly described below.

Here, the relationship between the diffuse reflection, the concentration of the color material, and the particle diameter will be briefly described with reference to FIG. For example, when the large-diameter particles 12b are in contact with the interface 11S as shown in FIG. 7C, and the small-diameter particles 12b are in contact with the interface 11S as shown in FIG. The diffuse reflection of the particles 12b at the interface 11S shown in c) is larger than the diffuse reflection of the particles 12b at the interface 11S shown in FIG. Further, as shown in FIG. 7A, the small-diameter particles 12b are in contact with the interface 11S, and as shown in FIG. 7B, the particles 12b are in contact with the interface 11S in a state where the resin coating 12c is coated. In this case, the diffuse reflection of the particles 12b at the interface 11S shown in FIG. 7A is larger than the diffuse reflection when the particles 12b shown in FIG. 7B are in contact with the interface 11S in the state where the resin coating 12c is coated. Become.
Thus, when the reflection control layer 12 in which the color material is dispersed on the transparent substrate 11 is formed, the smaller the particle size (average particle size) of the color material particles, the lower the concentration of the color material particles, Diffuse reflection from the light-shielding portion viewed from the transparent substrate 11 side (observer side) is reduced, and diffuse reflection can be reduced by applying resin coating to the particles of the color material.
Therefore, by reducing the optical density of the reflection control layer, diffuse reflection can be reduced and external light reflection can be reduced.
When the transparent substrate is a glass substrate, the refractive index is about 1.4, and the refractive index of the resin used for the color layer and the light shielding layer of the color filter is about 1.4 to 1.5. In addition, since carbon black generally used as a black pigment has a large imaginary term value of a complex refractive index, light is mainly reflected on the surface.

Here, the measurement of the diffuse reflected light is a measurement method in which the diffuse reflection component can be detected by the spectrocolorimeter, and the SCE method (special components exclusive method of the specular components excluded method) that measures by removing the regular reflected light as illustrated in FIG. It is abbreviated and called a diffuse reflection measurement method). In the case of this measurement method, even for the same color, the measurement value differs depending on the surface state of the sample, and a measurement result close to the state of visual evaluation can be obtained.
As the spectrocolorimeter, CM-2500d manufactured by Konica Minolta Co., Ltd. can be used.
In FIG. 8, the thick solid line arrow indicates the incident light 62L from the light source 62, the dotted line arrow indicates the direction of the light from each point, and the thin solid line arrow indicates the detection light 63L incident on the detector 63. Yes. Reference numeral 61 denotes an integrating sphere, and 64 denotes a trap. In FIG. 8, the configuration of the measurement color filter substrate 50 is the same as that shown in FIG.

  As shown in FIG. 8, from the spectral characteristics of the reflectance obtained by measuring the measurement reflection control layer 52 from the measurement substrate 51 side by a measurement method (SCE method) capable of detecting diffuse reflection light with a spectrocolorimeter. The obtained brightness Y in the XYZ color system of JIS Z8701 is preferably 0.03 or less. In this case, the blackness of the frame light-shielding portion is good in appearance.

The resin composition for the reflection control layer is bright when the refractive index n _s of the transparent substrate, the real part of the complex refractive index of the reflection control layer is n ₁ , and the real part of the complex refractive index of the light shielding layer is n _2. The absolute value of the difference between the refractive index n _s and the refractive index n ₁ is the absolute value of the difference between the refractive index n _s and the refractive index n ₂ in the wavelength region 505 nm to 605 nm centered at 555 nm where the visibility is high. It is also preferable that a reflection control layer having a light absorptivity in a wavelength region of 505 nm to 605 nm can be formed. This point will be briefly described below.

In the case of a conventional color filter, as illustrated in FIG. 9A, the light shielding portion includes a light shielding layer 13 formed on the transparent substrate 11, and the reflected light of the external light L0 is transmitted between the transparent substrate 11 and the light shielding layer. The light from the reflected light ref0 reflected at the interface with the light 13 is reflected light Ref0. In this case, since the reflected light Ref0 is large, due to the reflected light Ref0, the black color of the light-shielding portion is not good under indoor, outdoor, or sunlight, and the color filter is used for the display device. In terms of design, it was difficult to produce a high-quality product.
On the other hand, as shown in FIG. 9B, when the reflection control layer 12 and the light shielding layer 13 are sequentially laminated on the transparent substrate 11, the reflected light of the external light L0 is reflected between the transparent substrate 11 and the reflection control. The reflected light Ref1 that is emitted from the reflected light ref1 reflected at the interface with the layer 12 passes through the reflection control layer 12 from the transparent substrate 11 side, and is reflected at the interface between the reflection control layer 12 and the light shielding layer 13 It becomes the sum with the reflected light Ref2 from which the light is emitted from the reflected light ref2. Then, other light incident from outside light L 0 is absorbed by the reflection control layer 12 and the light shielding layer 13.

When the refractive index n _s of the transparent substrate 11, the real part of the complex refractive index of the reflection control layer 12 is n ₁ , and the real part of the complex refractive index of the light shielding layer 13 is n ₂ , the visibility at a bright place is high at 555 nm. And the absolute value of the difference between the refractive index n _s and the refractive index n ₁ is smaller than the absolute value of the difference between the refractive index n _s and the refractive index n ₂ , and reflection Since the control layer has light absorptivity in the wavelength region 505 nm to 605 nm, the emitted light Ref1 from the reflected light ref1 reflected at the interface between the transparent substrate 11 and the reflection control layer 12 in the wavelength region where human visibility is high. The reflected light Ref2 emitted from the reflected light ref2 that passes through the reflection control layer 12 from the transparent substrate 11 side and is reflected at the interface between the reflection control layer 12 and the light shielding layer 13 can be reduced. As a result, the influence of the apparent external light caused by the reflected light Ref1 and the reflected light Ref2 as shown in FIG. 9B is more than the influence of the apparent external light caused by the reflected light Ref0 as shown in FIG. Can be reduced. As a result, when a color filter is used in a display device, it is possible to improve the blackness of the light-shielding part indoors / outdoors, under indoor light, under sunlight, due to the reflected light of the outside light. It can be finished into a product with a feeling.

  Here, the complex refractive index of each layer is obtained by forming a layer for measuring a refractive index on a glass substrate and measuring it using an optical film thickness measuring system DF-1042RT manufactured by Techno Synergy. it can.

Incidentally, homogeneous refractive index n _01, is incident at an angle from the medium is isotropic to a medium having a refractive index n ₀₂ .theta.i (angle of incidence), considering the light refraction angle [theta] t (exit angle), the incident light plane wave The component included in the incident plane of the electric vector is called P-polarized light, and the component perpendicular to the incident plane is called S-polarized light. The P-polarized energy reflectivity r _p and the S-polarized energy reflectivity r _{s, respectively,} are Each is represented by the following formulas (1) and (2). Then, representing the reflectance half the sum of _{r p} and _{r s.}

From equations (1) and (2), it can be seen that the smaller the difference between the refractive index _n01 and the refractive index _n02 , the smaller the reflectance.
Therefore, in FIG. 9B, the difference between the refractive index n _s of the transparent substrate 11 and the refractive index n ₁ of the reflection control layer 12 in the wavelength region 505 nm to 605 nm centered at 555 nm where the visibility in a bright place is high. However, when the difference between the refractive index n _s of the transparent substrate 11 and the refractive index n ₂ of the light shielding layer 13 is smaller, the reflection control layer 12 absorbs the transparent substrate over almost the entire wavelength region 505 nm to 605 nm. The sum of the intensity of the reflected light ref1 reflected at the interface between the reflection control layer 12 and the reflection control layer 12 and the intensity of the reflected light ref2 reflected at the interface between the reflection control layer 12 and the light shielding layer 13 is shown in FIG. The intensity of the reflected light ref0 reflected at the interface between the transparent substrate 11 and the light shielding layer 13 shown in FIG.

Here, as can be seen from FIG. 10, it is important to reduce the amount of light in the wavelength region near the 555 nm wavelength where the visibility is high in order to reduce the reflected light of the external light felt by the observer. From FIG. 10, it is judged that it is effective to reduce the reflected light of outside light particularly in the wavelength range of 505 nm to 605 nm. Note that the relative visibility in FIG. 10 is a relative representation of the visibility of other wavelengths, with a visibility of 555 nm as 1.
Further, for example, refers to the refractive index of the transparent substrate 11 and n _s, the red colored layer, the green coloring layer, the blue colored layer, Gray colored layer, a transparent resin layer, also a real part (simply a refractive index of the complex refractive index of the light-shielding layer 11), n _R , n _G , n _B , n _b , n _c , and n ₂ , respectively, the spectral characteristics shown in FIG. 11 are obtained. Note that the Gray colored layer is obtained by reducing the content of the black color material in the light shielding layer and increasing the resin content, and the transparent resin layer is obtained by removing the color material in the light shielding layer.
As shown in FIG. 11, each layer has a wavelength region of 505 nm to 605 nm centered at 555 nm, and the absolute value of the difference between the refractive index n _s and the refractive index n ₁ is equal to the refractive index n _s and the refractive index n ₂ . The relationship smaller than the absolute value of the difference is satisfied.

Accordingly, the colored layers of each color such as the red colored layer, the green colored layer, the blue colored layer, and the Gray colored layer satisfy the above-described refractive index relationship and light absorption, so that a colored layer is formed as the reflection control layer. Is valid.
In particular, when a blue colored layer is formed as the reflection control layer, the light absorption of the reflection control layer is large, and the absolute value of the difference between the refractive index n ₁ and the refractive index n ₂ is the refractive index _ns and the refractive index. smaller than the absolute value of the difference between the rate n _2, it is possible to effectively suppress the reflected light ref2 emitted from the reflected light ref2 which is reflected at the interface between the antireflection layer 12 and the light-shielding layer 13. As a result, when the blue colored layer is formed as the reflection control layer, the reflection shown in FIG. 9B is performed in the wavelength region 505 nm to 605 nm where human visibility is higher than when the colored layers of other colors are formed. It is possible to further reduce the influence of external light due to the light Ref1 and the reflected light Ref2. As a result, when the color filter is used in a display device, the black color of the light-shielding portion can be further improved indoors, outdoors, under sunlight, and can be finished into a high-quality product in terms of design. .

Further, from the aspect of light absorption of the reflection control layer, it is preferable that the brightness Y in the XYZ color system of JIS Z8701 calculated from the spectral transmittance of the reflection control layer is considered. Each of the colored layers such as the red colored layer, the green colored layer, the blue colored layer, and the Gray colored layer has a wavelength region of 505 nm to 605 nm centered at 555 nm and has sufficient light absorption. Among them, the blue colored layer is preferable because the brightness Y in the XYZ color system of JIS Z8701 calculated from the spectral transmittance and considering the visibility is low.
Specifically, it is preferable that the reflection control layer has a Y value (D65 light source) measured by the SCI method of 5.0 or less, which is considered to have good appearance.

Here, the SCI method (abbreviation of Special Components Include method) is a measurement method in which a spectrocolorimeter detects the sum of regular reflection light and diffuse reflection light. The value of brightness Y in the XYZ color system of JIS Z8701 obtained by calculation from the measurement result of the spectral characteristics of the reflectance of the reflected light of outside light is better, and it is used as an appearance evaluation method by reflection of outside light. ing. The SCI method is widely used when measuring an object color.
In the SCI method, for example, the measurement is performed in a state where the trap 64 is not provided in FIG.
The spectral transmittance can be measured using OSP-SP2000 (manufactured by OLYMPUS) as a microspectrophotometer. The spectral transmittance of each layer is obtained, and from the obtained result, the value of brightness Y in the XYZ color system of JIS Z8701 of the transmitted light is obtained by calculation, and this is used as an evaluation of the degree of attenuation in each layer. Can do.

  When the resin composition for a reflection control layer contains a color material, the content of the color material is not particularly limited as long as it is an amount that satisfies the above-described characteristics, and is appropriately adjusted.

Especially, it is preferable that the resin composition for reflection control layers contains a black color material or a blue color material, and it is especially preferable to contain a black color material. This is because a reflection control layer that satisfies the above characteristics can be easily formed.
In addition, in a display device having a conventional color filter, the frame light-shielding portion is composed of only the light-shielding layer, and there is a problem that the color of the frame light-shielding portion tends to be yellowish compared to the color of the display area. Therefore, when using a resin composition for a reflection control layer containing a blue color material and forming a blue colored layer as a reflection control layer, it is possible to suppress the shade of the frame light-shielding portion from becoming yellowish, The difference in hue between the display area and the non-display area can be reduced.

  When the resin composition for the reflection control layer is transparent, a transparent resin layer is formed as the reflection control layer. The transparent resin composition for the reflection control layer is preferably capable of forming a reflection control layer having a transmittance of 90% or more. When a transparent resin layer is formed as the reflection control layer, most of the outside light reaches the light shielding layer, and the distance between the color material in the light shielding layer and the transparent substrate is larger than when no reflection control layer is provided. can do. Thereby, external light reflection from the light shielding layer can be reduced as compared with the case where no reflection control layer is provided.

  As the transparent substrate used in the color filter of the present invention, those generally used for color filters can be used. Specifically, it can be the same as the substrate in “A. Manufacturing method of laminate”. In particular, an inorganic substrate is preferably used, and a glass substrate is preferably used among the inorganic substrates. Furthermore, it is preferable to use an alkali-free type glass substrate among the glass substrates. An alkali-free glass substrate is excellent in dimensional stability and workability in high-temperature heat treatment, and does not contain an alkali component in the glass, so it can be suitably used for a color filter for a display device using an active matrix method. Because it can.

2. Step of forming resin composition layer for light shielding layer In the method for producing a color filter of the present invention, the resin for reflection control layer contained in the resin composition layer for reflection control layer on the resin composition layer for reflection control layer. The resin composition layer formation process for light shielding layers which can develop with the same developing solution as a composition and forms the resin composition layer for light shielding layers using a solventless photocurable resin composition is performed.

The solvent-free photocurable resin composition may be any one that can be developed with the same developer as the resin composition for the reflection control layer. For example, a composition in which a black color material is dispersed in a binder resin is used. .
Examples of the black color material include pigments and dyes, which are appropriately selected according to the method for forming the light-shielding layer resin composition layer. In the case of applying a solventless photocurable resin composition on the resin composition layer for the reflection control layer, in order to prepare a solventless photocurable resin composition as the light shielding layer resin composition, a dye is used. Used. In addition, even if it is a solvent-free photocurable resin composition, a pigment can be used. In this case, a resin-coated pigment is preferably used from the viewpoint of dispersibility. Moreover, when bonding the dry film containing a solventless photocurable resin composition on the resin composition layer for reflection control layers, both a pigment and dye can be used.
Examples of black pigments include carbon black and titanium black. Examples of the black dye include Color Index Number Solvent Black 3, Solvent Black 7, Solvent Black 21, Solvent Black 23, Solvent Black 27, Solvent Black 28, Solvent Black 31, and the like.
As the binder resin, for example, a photosensitive resin having a reactive vinyl group such as acrylate, methacrylate, polyvinyl cinnamate, or cyclized rubber is used.
Solvent-free photocurable resin compositions include photopolymerization initiators, sensitizers, coating improvers, development improvers, crosslinking agents, polymerization inhibitors, plasticizers, flame retardants, etc. May be contained.

In addition, the light shielding layer resin composition is preferably capable of forming a light shielding layer having an optical density of 4.0 or more, particularly an optical density of 4.0 μm or more at a unit thickness of 1 μm.
The content of the black color material in the light shielding layer resin composition is preferably an amount satisfying the optical density, and is appropriately adjusted.

  The thickness of the resin composition layer for the light shielding layer can be the same as the thickness of a general light shielding layer in the color filter, and can be set, for example, within a range of 0.5 μm to 2.0 μm.

  In addition, about the formation method of the resin composition layer for light shielding layers, since it is the same as that of the formation method of the 2nd resin composition layer in said "A. manufacturing method of a laminated body", description here is abbreviate | omitted.

3. Patterning Step In the method for producing a color filter of the present invention, the reflection control layer resin composition layer and the light shielding layer resin composition layer are exposed in a pattern, developed using the same developer, and heated. Then, a patterning process for forming the reflection control layer and the light shielding layer in the same pattern is performed.
The patterning step is the same as the patterning step in “A. Laminate manufacturing method” above, and thus the description thereof is omitted here.

  The pattern shape of the reflection control layer and the light shielding layer can be the same as the pattern shape of a general light shielding portion in a color filter, and is a lattice shape in the display region and a frame shape in the non-display region.

  Further, the characteristics of the reflection control layer and the light shielding layer are as described above, and it is preferable to satisfy the above reflection spectral characteristics and refractive index.

4). Colored layer formation process In the manufacturing method of the color filter of this invention, the colored layer formation process which forms the colored layer of several colors in the opening part of the said light shielding layer on the said transparent substrate is performed.

  The colored layer has, for example, three colored layers of red, green, and blue. The color of the colored layer may be any color as long as it contains at least three colors of red, green, and blue. For example, three colors of red, green, and blue, four colors of red, green, blue, and yellow, or red, Five colors such as green, blue, yellow, and cyan may be used.

The colored layer can be formed using, for example, a colored layer resin composition in which a coloring material is dispersed in a binder resin.
Examples of the color material include pigments and dyes of each color. Examples of the color material used for the red colored layer include perylene pigments, lake pigments, azo pigments, quinacridone pigments, anthraquinone pigments, anthracene pigments, and isoindoline pigments. Examples of the color material used in the green coloring layer include phthalocyanine pigments such as halogen polysubstituted phthalocyanine pigments or halogen polysubstituted copper phthalocyanine pigments, triphenylmethane basic dyes, isoindoline pigments, and isoindolinone pigments. And pigments. Examples of the color material used in the blue colored layer include copper phthalocyanine pigments, anthraquinone pigments, indanthrene pigments, indophenol pigments, cyanine pigments, dioxazine pigments, and the like. These pigments and dyes may be used alone or in combination of two or more.
As the binder resin, for example, a photosensitive resin having a reactive vinyl group such as acrylate, methacrylate, polyvinyl cinnamate, or cyclized rubber is used.
The colored layer resin composition may contain a photopolymerization initiator and, if necessary, a sensitizer, a coatability improver, a development improver, a crosslinking agent, a polymerization inhibitor, a plasticizer, a flame retardant, and the like. Good.

  The arrangement of the colored layers is not particularly limited, and may be a known arrangement such as a stripe type, a mosaic type, a triangle type, or a four-pixel arrangement type.

  There may or may not be a gap between adjacent colored layers, but it is preferable that there is no gap among them.

The film thickness of the colored layer can be the same as the film thickness of a general colored layer in a color filter, and can be set, for example, within a range of 1 μm to 5 μm.
As a method for forming the colored layer, any method can be used as long as a plurality of colored layers can be arranged on the same plane, and examples thereof include a photolithography method, an inkjet method, and a printing method.

5. Other Steps In addition to the above-described resin composition layer forming step for reflection control layer, resin composition layer forming step for light shielding layer, patterning step and colored layer forming step, the method for producing a color filter of the present invention includes, for example, a colored layer. You may have the protective layer formation process which forms a protective layer on it.

(Protective layer forming step)
In the manufacturing method of the color filter of this invention, you may perform the protective layer formation process which forms a protective layer so that a light shielding layer and a colored layer may be covered after the said colored layer formation process. The protective layer is also referred to as an overcoat layer.

  Examples of the material used for forming the protective layer include a thermosetting resin composition and a photocurable resin composition.

  The photocurable resin composition is preferable for cutting after producing a multi-faceted color filter. The photocurable resin composition is the same as the binder resin used for the colored layer, for example, a photosensitive resin having a reactive vinyl group such as acrylate, methacrylate, polyvinyl cinnamate, or cyclized rubber. Can be used. A photopolymerization initiator may be added to the photocurable resin composition, and further, if necessary, a sensitizer, a coating property improver, a development improver, a crosslinking agent, a polymerization inhibitor, a plasticizer, a difficult agent. A flame retardant or the like may be added.

Examples of the thermosetting resin composition include those using an epoxy compound and those using a thermal radical generator.
Examples of the epoxy compound include known polyvalent epoxy compounds that can be cured by a carboxylic acid, an amine compound, and the like. Examples of such epoxy compounds include “Epoxy resin handbook” edited by Masaki Shinbo, published by Nikkan Kogyo Shimbun. (1987) and the like, and these can be used.
The thermal radical generator is at least one selected from the group consisting of persulfates, halogens such as iodine, azo compounds, and organic peroxides, and more preferably azo compounds or organic peroxides. As the azo compound, 1,1′-azobis (cyclohexane-1-carbonitrile, 1-[(1-cyano-1-methylethyl) azo] formamide, 2,2′-azobis [N- (2-propenyl) -2-methylpropionamide], 2,2′-azobis (N-butyl-2-methylpropionamide), 2,2′-azobis (N-cyclohexyl-2-methylpropionamide), and the like. Peroxides include di (4-methylzenzoyl) peroxide, t-butylperoxy-2-ethylexanate, 1,1-di (t-hexylperoxy) cyclohexane, 1,1-di (t -Butylperoxy) cyclohexane, t-butylperoxybenzoate, t-butylperoxy-2-ethylhexyl monocarbonate, t-butyl -4,4-di- (t-butylperoxy) butanate, dicumyl peroxide and the like.

C. Laminate The laminate of the present invention comprises a substrate, a first resin layer formed in a pattern on the substrate, and the same pattern as the first resin layer on the first resin layer. It has the 2nd resin layer containing this, It is characterized by the above-mentioned.

  FIG.1 (d) is a schematic sectional drawing which shows an example of the laminated body of this invention. As shown in FIG. 1D, the laminate is formed in a pattern on the substrate 1, the first resin layer 2 formed in a pattern on the substrate 1, and on the first resin layer 2. The first resin layer 2 and the second resin layer 3 are formed in the same pattern.

  According to the present invention, since the second resin layer contains a dye, it can be formed using a solventless resin composition. Therefore, it is possible to prevent the first resin layer and the second resin layer from being mixed when the second resin layer is formed. Therefore, it is possible to suppress the deterioration of the functions of the first resin layer and the second resin layer.

  In addition, since it described in the said "A. manufacturing method of a laminated body" about a board | substrate, description here is abbreviate | omitted. Hereinafter, the other structure in the laminated body of this invention is demonstrated.

1. 1st resin layer The 1st resin layer in this invention is formed in a pattern shape on a board | substrate.
Examples of the first resin layer include a reflection control layer in a color filter, a reflection control layer in a cover glass, and a white decorative layer.
Since the first resin layer is described in detail in the above “A. Manufacturing method of laminated body”, the description thereof is omitted here.

2. 2nd resin layer The 2nd resin layer in this invention is formed in the same pattern shape as a 1st resin layer on a 1st resin layer, and contains dye.
Examples of the second resin layer include a light shielding layer in a color filter, a black decorative layer and a light shielding layer in a cover glass.
Since the second resin layer is described in detail in the above “A. Manufacturing method of laminated body”, description thereof is omitted here.

3. Laminated body The laminated body of this invention is applicable to various uses, such as a color filter and a cover glass, for example. Specifically, in the color filter, a color filter having a reflection control layer as the first resin layer and a light shielding layer as the second resin layer can be mentioned. In the cover glass, a cover glass having a reflection control layer as the first resin layer, a black decorative layer as the second resin layer, a white decorative layer as the first resin layer, and a light shielding layer as the second resin layer Glass is mentioned.
Especially, it is preferable that the laminated body of this invention is used for a color filter or a cover glass, and it is used especially for the color filter or cover glass which has a reflection control layer as a 1st resin layer, and a light shielding layer as a 2nd resin layer. preferable.
Hereinafter, the color filter and the cover glass will be described.

(1) Color filter The color filter in this invention has a reflection control layer as a 1st resin layer, and a light shielding layer as a 2nd resin layer in the laminated body of this invention.
Since the color filter is described in detail in “D. Color filter” described later, description thereof is omitted here.

(2) Cover glass In the laminated body of the present invention, the cover glass of the present invention has a reflection control layer as the first resin layer and a black decorative layer as the second resin layer, or white decorative as the first resin layer. The layer and the second resin layer have a light shielding layer. That is, the cover glass in the present invention is a transparent substrate, a reflection control layer formed in a pattern on the transparent substrate, and a black containing a dye formed in the same pattern as the reflection control layer on the reflection control layer. A decorative layer, or a transparent substrate, a white decorative layer formed in a pattern on the transparent substrate, and a white decorative layer formed in the same pattern as the white decorative layer on the white decorative layer. And a light-shielding layer to be contained.

  According to the present invention, since the black decorative layer or the light shielding layer contains a dye, the black decorative layer or the light shielding layer can be formed using a solventless resin composition, and at the time of forming the black decorative layer or the light shielding layer, It can suppress that a black decoration layer mixes or a white decoration layer and a light shielding layer mix. Therefore, the occurrence of color unevenness can be suppressed.

In addition, since it described in the said "A. manufacturing method of a laminated body" about each structure in a cover glass, description here is abbreviate | omitted.
Examples of the use of the cover glass of the present invention include a touch panel.

D. Color filter The color filter of the present invention is formed in a pattern on a transparent substrate, a transparent substrate, a reflection control layer that is a resin layer, and formed on the reflection control layer in the same pattern as the reflection control layer. A light-shielding layer containing a dye and a plurality of colored layers formed in the opening of the light-shielding layer on the transparent substrate.

  FIG. 12 is a schematic sectional view showing an example of the color filter of the present invention. As shown in FIG. 12, the color filter 10 includes a transparent substrate 11, a reflection control layer 12 formed in a pattern on the transparent substrate 11, and the same pattern as the reflection control layer 12 on the reflection control layer 12. The formed light shielding layer 13, the colored layer 16 formed in the opening of the light shielding layer 13 on the transparent substrate 11 and arranged with the red colored layer 16R, the green colored layer 16G, and the blue colored layer 16B, and the colored layer 16 And a protective layer 17 formed so as to cover it. In the example shown in FIG. 12, both the pixel-partitioning light-shielding part 14 that defines the pixel and is formed in the display area 18 and the frame light-shielding part 15 that is formed in the non-display area 19 and defines the display area 18 are reflected. A laminated structure of the control layer 12 and the light shielding layer 13 is employed.

According to the present invention, by stacking the reflection control layer and the light shielding layer, when a color filter is used in a display device, reflection of external light can be suppressed, and visibility and design can be improved. it can.
Further, according to the present invention, since the light shielding layer contains a dye, it can be formed using a solvent-free resin composition, and the reflection control layer and the light shielding layer are prevented from being mixed when the light shielding layer is formed. can do. Therefore, it is possible to suppress the occurrence of color unevenness and the deterioration of the light shielding property of the light shielding layer.

Since each configuration of the color filter is described in “B. Manufacturing method of color filter” above, description thereof is omitted here.
Examples of the use of the color filter of the present invention include a liquid crystal display device and an organic EL display device.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.

  Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

[Example 1]
A color filter was produced as illustrated in FIG. First, a photocurable curable resin composition A is prepared, and using this curable resin composition A, a red colored layer resin composition, a green colored layer resin composition, and a blue colored layer resin composition are prepared. And a resin composition C for reflection control layer were prepared. Next, using these, a photolithographic method was performed for each resin composition to form each colored layer and the reflection control layer. About the light shielding layer 13, after laminating | stacking the resin composition layer 12a for reflection control layers, and the resin composition layer 13a for light shielding layers, the reflection control layer 12 and the light shielding layer 13 of a predetermined pattern were formed by the photolithographic method. Formed. Here, after forming the reflection control layer 12 and the light shielding layer 13, the red colored layer 16R, the green colored layer 16G, and the blue colored layer 16B were each formed by a photolithography process.

(Preparation of curable resin composition A)
The polymerization tank is charged with 63 parts by weight of methyl methacrylate (MMA), 12 parts by weight of acrylic acid (AA), 6 parts by weight of 2-hydroxyethyl methacrylate (HEMA), and 88 parts by weight of diethylene glycol dimethyl ether (DMDG). After stirring and dissolving, 7 parts by weight of 2,2′-azobis (2-methylbutyronitrile) was added and dissolved uniformly. Then, it stirred at 85 degreeC under nitrogen stream for 2 hours, and also was made to react at 100 degreeC for 1 hour. Further, 7 parts by weight of glycidyl methacrylate (GMA), 0.4 parts by weight of triethylamine, and 0.2 parts by weight of hydroquinone were added to the obtained solution, and the mixture was stirred at 100 ° C. for 5 hours to obtain a copolymer resin solution ( A solid content of 50%) was obtained.
Next, the following materials were stirred and mixed at room temperature to obtain a curable resin composition A.
<Composition of curable resin composition A>
-Copolymer resin solution (solid content 50%): 16 parts by weight-Dipentaerythritol pentaacrylate (Sartomer SR399)
: 24 parts by weight-Orthocresol novolak type epoxy resin (Epicoat Shell Epoxy Co., Ltd. Epicoat 180S70): 4 parts by weight-2-Methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one: 4 parts by weight Parts ・ Diethylene glycol dimethyl ether: 52 parts by weight

(Preparation of resin composition C for reflection control layer)
First, the following components were mixed and sufficiently dispersed by a bead mill to prepare a black pigment dispersion B.
<Composition of black pigment dispersion B>
-Resin-coated carbon black (Mitsubishi Chemical Corporation MS18E): 20 parts by weight-Polymer dispersion (Big Chemie Japan, Ltd. Disperbyk 163): 5 parts by weight-Solvent (diethylene glycol dimethyl ether): 75 parts by weight The above resin-coated carbon black (MS18E manufactured by Mitsubishi Chemical Corporation) had an average particle size of 25 nm. The particle diameter is, for example, diluted with a solvent (referred to as a dilution solvent) contained in the composition using a laser Doppler scattered light analysis particle size analyzer (trade name “Microtrac 934UPA”) manufactured by Nikkiso Co., Ltd. The particle size in which the accumulation of particle size occupies 50% was defined as 50% average particle size, and the value was measured.
Next, the following amounts of components were sufficiently mixed to obtain a resin composition C for reflection control layer.
<Composition of Resin Composition C for Reflection Control Layer>
-Black pigment dispersion B: 5 parts by weight-Curable resin composition A: 15 parts by weight-Diethylene glycol dimethyl ether: 80 parts by weight

(Formation of reflection control layer and light shielding layer)
First, the resin composition C for reflection control layer is applied on one surface of a glass substrate (Asahi Glass Co., Ltd., AN material) with a spin coater and dried at 100 ° C. for 3 minutes. Formed. Under the present circumstances, it adjusted so that the film thickness of the resin composition layer for reflection control layers might be set to 1.0 micrometer.
Next, on the resin composition layer for the reflection control layer, a laminator (manufactured by Hitachi Industries, Ltd., Lamic II type) is used to laminate a dry film (F-Film, T-FK K43) and dry. The protective film was peeled from the film to form a light shielding layer resin composition layer. Next, a photomask was placed at a distance of 100 μm from the resin composition layer for the light shielding layer, and after exposure in a pattern with a 2.0 kW ultrahigh pressure mercury lamp by a proximity aligner, 0.05 wt% potassium hydroxide aqueous solution was used. Developed. Thereafter, the substrate was left to stand in an atmosphere of 230 ° C. for 30 minutes to perform heat treatment, thereby forming a reflection control layer and a light shielding layer in a predetermined pattern. The total film thickness of the reflection control layer and the light shielding layer was 3.0 μm.

(Formation of colored layer)
Next, a colored layer of each color was formed as follows.
(1) Formation of red colored layer On the substrate on which the reflection control layer and the light shielding layer are formed in a pattern, a red colored layer resin composition having the following composition is applied by spin coating, and then in an oven at 70 ° C. For 3 minutes. Next, a photomask is placed at a distance of 100 μm from the coating film of the resin composition for the red colored layer, and only a region corresponding to the red colored layer forming region is used by a proximity aligner using a 2.0 kw ultrahigh pressure mercury lamp. Were irradiated with ultraviolet rays for 10 seconds. Subsequently, it was immersed in 0.05 wt% potassium hydroxide aqueous solution (liquid temperature 23 degreeC) for 1 minute, and alkali image development was carried out, and only the uncured part of the coating film of the resin composition for red colored layers was removed. Thereafter, the substrate was left to stand in an atmosphere of 230 ° C. for 15 minutes to perform heat treatment, thereby forming a patterned red colored layer in the display region. The formed film thickness was 2.0 μm.
<Composition of resin composition for red colored layer>
C. I. Pigment Red 177: 3 parts by weight C.I. I. Pigment Red 254: 4 parts by weight-Polysulfonic acid type polymer dispersant: 3 parts by weight-Curable resin composition A: 23 parts by weight-3-methoxybutyl acetate: 67 parts by weight

(2) Formation of green colored layer Next, using a resin composition for a green colored layer having the following composition, in the same process as the formation of the red colored layer, the coating film thickness was changed, and the formed film thickness was 2.0 μm. Thus, a patterned green colored layer was formed in the display area.
<Composition of resin composition for green colored layer>
C. I. Pigment Green 58: 7 parts by weight C.I. I. Pigment Yellow 138: 1 part by weight-Polysulfonic acid type polymer dispersant: 3 parts by weight-Curable resin composition A: 22 parts by weight-3-methoxybutyl acetate: 67 parts by weight

(3) Formation of blue colored layer Next, using the resin composition for a blue colored layer having the following composition, in the same process as the formation of the red colored layer, the applied film thickness was changed, and the formed film thickness was 2.0 μm. Thus, a patterned blue colored layer was formed in the display region.
<Composition of resin composition for blue colored layer>
C. I. Pigment Blue 15: 6: 4 parts by weight C.I. I. Pigment Violet 23: 1 part by weight-Polysulfonic acid type polymer dispersant: 3 parts by weight-Curable resin composition A: 25 parts by weight-3-methoxybutyl acetate: 67 parts by weight

[Example 2]
A color filter was produced in the same manner as in Example 1 except that the light-shielding layer resin composition D was prepared as shown below, and a reflection control layer and a light-shielding layer were formed.

(Preparation of resin composition D for light shielding layer)
First, the following components were mixed and sufficiently dispersed with a bead mill to prepare a light shielding layer resin composition D.
<Composition of resin composition D for light shielding layer>
-Resin-coated carbon black (Mitsubishi Chemical Corporation MS18E): 20 parts by weight-Polymer dispersion (Big Chemie Japan Co., Ltd. Disperbyk 163): 5 parts by weight-Polymerization reactive monomer (Kyoeisha Chemical Co., Ltd. PE3A-MS): 70 Part by weight-2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one: 5 parts by weight

(Formation of reflection control layer and light shielding layer)
In the same manner as in Example 1, a resin composition layer for a reflection control layer was formed on a glass substrate.
Next, the resin composition D for the light shielding layer was applied on the resin composition layer for the reflection control layer with a spin coater and dried at 100 ° C. for 3 minutes to form a resin composition layer for the light shielding layer. At this time, the thickness of the resin composition layer for the light shielding layer was adjusted to 1.0 μm. A photomask was placed at a distance of 100 μm from the resin composition layer for the light-shielding layer, exposed in a pattern with a 2.0 kW ultra-high pressure mercury lamp using a proximity aligner, and then developed with a 0.05 wt% aqueous potassium hydroxide solution. . Thereafter, the substrate was left to stand in an atmosphere of 230 ° C. for 30 minutes to perform heat treatment, thereby forming a reflection control layer and a light shielding layer in a predetermined pattern. The total film thickness of the reflection control layer and the light shielding layer was 2.0 μm.

[Example 3]
A color filter was produced in the same manner as in Example 1 except that the light-shielding layer resin composition E was prepared as shown below and a reflection control layer and a light-shielding layer were formed.

(Preparation of resin composition E for light shielding layer)
First, the following amounts of components were sufficiently mixed to prepare a light shielding layer resin composition E.
<Composition of resin composition E for light shielding layer>
Black dye (NUBIAN BLACK PC-8550 manufactured by Orient Chemical Industry Co., Ltd.): 20 parts by weight Polymerization reactive monomer (Kyoeisha Chemical Co., Ltd. PE3A-MS): 70 parts by weight 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one: 5 parts by weight

(Formation of reflection control layer and light shielding layer)
In the same manner as in Example 1, a resin composition layer for a reflection control layer was formed on a glass substrate.
Next, the light shielding layer resin composition E was applied onto the reflection control layer resin composition layer with a spin coater and dried at 100 ° C. for 3 minutes to form a light shielding layer resin composition layer. At this time, the thickness of the resin composition layer for the light shielding layer was adjusted to 1.0 μm. A photomask was placed at a distance of 100 μm from the resin composition layer for the light-shielding layer, exposed in a pattern with a 2.0 kW ultra-high pressure mercury lamp using a proximity aligner, and then developed with a 0.05 wt% aqueous potassium hydroxide solution. . Thereafter, the substrate was left to stand in an atmosphere of 230 ° C. for 30 minutes to perform heat treatment, thereby forming a reflection control layer and a light shielding layer in a predetermined pattern. The total film thickness of the reflection control layer and the light shielding layer was 2.0 μm.

[Comparative Example 1]
A color filter was prepared in the same manner as in Example 1 except that the light-shielding layer resin composition F was prepared as shown below and a reflection control layer and a light-shielding layer were formed.

(Preparation of resin composition F for light shielding layer)
First, the following amounts of components were sufficiently mixed to prepare a light shielding layer resin composition F.
<Composition of resin composition F for light shielding layer>
-Black pigment dispersion B: 43 parts by weight-Curable resin composition A: 19 parts by weight-Diethylene glycol dimethyl ether: 38 parts by weight

(Formation of reflection control layer and light shielding layer)
In the same manner as in Example 1, a resin composition layer for a reflection control layer was formed on a glass substrate.
Next, when the resin composition F for the light shielding layer was applied on the resin composition layer for the reflection control layer with a spin coater, the resin composition layer for the reflection control layer was dissolved in the resin composition F for the light shielding layer, Unevenness occurred.

[Comparative Example 2]
A color filter was produced in the same manner as in Example 1 except that the light-shielding layer was formed using the light-shielding layer resin composition F without forming a reflection control layer.

(Formation of light shielding layer)
The light shielding layer resin composition F was applied to one surface of a glass substrate with a spin coater and dried at 100 ° C. for 3 minutes to form a light shielding layer resin composition layer. A photomask was placed at a distance of 100 μm from the resin composition layer for the light-shielding layer, exposed in a pattern with a 2.0 kW ultra-high pressure mercury lamp using a proximity aligner, and then developed with a 0.05 wt% aqueous potassium hydroxide solution. . Thereafter, the substrate was left to stand in an atmosphere of 230 ° C. for 30 minutes to perform heat treatment, thereby forming a light shielding layer in a predetermined pattern.

[Comparative Example 3]
A color filter was produced in the same manner as in Example 1 except that a reflection control layer and a light shielding layer were formed as shown below.

(Formation of reflection control layer)
The resin composition C for reflection control layer was applied on one surface of a glass substrate with a spin coater and dried at 100 ° C. for 3 minutes to form a resin composition layer for reflection control layer. A photomask is placed at a distance of 100 μm from the resin composition layer for the reflection control layer, exposed to a pattern with a 2.0 kW ultrahigh pressure mercury lamp using a proximity aligner, and then developed with a 0.05 wt% aqueous potassium hydroxide solution. did. Thereafter, the substrate was left to stand in an atmosphere of 230 ° C. for 30 minutes to perform heat treatment, thereby forming a reflection control layer in a predetermined pattern.

(Formation of light shielding layer)
On the reflection control layer, the light shielding layer resin composition F was applied by a spin coater and dried at 100 ° C. for 3 minutes to form a light shielding layer resin composition layer. A photomask was placed at a distance of 100 μm from the resin composition layer for the light-shielding layer, exposed in a pattern with a 2.0 kW ultra-high pressure mercury lamp using a proximity aligner, and then developed with a 0.05 wt% aqueous potassium hydroxide solution. . Thereafter, the substrate was left to stand in an atmosphere of 230 ° C. for 30 minutes to perform heat treatment, thereby forming a light shielding layer in a predetermined pattern.

[Evaluation]
The reflectance was evaluated using CM-2500d manufactured by Konica Minolta Co., Ltd. for the frame shading part of each color filter obtained. In Comparative Example 1, since unevenness occurred when the light-shielding layer resin composition layer was laminated, the measurement was not performed.

<Measurement conditions: spectrocolorimeter>
Measuring instrument: Konica Minolta Co., Ltd., spectral colorimeter CM-2500d
Light receiving condition for illumination: d / 8 ° (JIS Z8722 condition c)
Irradiation area: Measurement diameter = circle with a diameter of 11 mm Measurement area: Circle of 8 mm in the irradiation area (the center of gravity is the same as the irradiation area, circle with a diameter of 11 mm)

Spectral reflectance was measured by the SCI method, and brightness Y in the XYZ color system of JIS Z8701 in a D65 light source was obtained by calculation from the obtained measurement result.
Table 1 shows the results.

  From the above results, it became clear that a color filter having a light-shielding layer that is easy to form and has low reflection can be obtained by using a solvent-free photocurable resin composition.

DESCRIPTION OF SYMBOLS 1 ... Board | substrate 2a ... 1st resin composition layer 2 ... 1st resin layer 3a ... 2nd resin composition layer 3 ... 2nd resin layer 4 ... Mask 5 ... Ultraviolet ray 10 ... Color filter 11 ... Transparent substrate 12a ... Reflection control layer Resin composition layer 12 ... Reflection control layer 13a ... Light shielding layer resin composition layer 13 ... Light shielding layer 14 ... Pixel segmenting light shielding part 15 ... Frame light shielding part 18 ... Display area 19 ... Non-display area 20 ... Cover glass 21 ... Transparent substrate 22a ... Resin control layer for reflection control layer 22 ... Reflection control layer 23a ... Resin composition layer for black decorative layer 23 ... Black decorative layer 24 ... Insulating layer 25 ... White decorative layer 26 ... Light shielding layer

Claims (8)

A first resin composition layer forming step of forming a first resin composition layer on a substrate;
The first resin composition layer can be developed with the same developer as the first resin composition contained in the first resin composition layer, and a first solvent-free photocurable resin composition is used. A second resin composition layer forming step of forming two resin composition layers;
The first resin composition layer and the second resin composition layer are exposed in a pattern, developed using the same developer, and heated to form the first resin layer and the second resin layer in the same pattern. And a patterning step for forming a laminate.   2. The dry film containing the solvent-free photocurable resin composition is bonded onto the first resin composition layer in the second resin composition layer forming step. The manufacturing method of the laminated body of description.   The method for producing a laminate according to claim 1, wherein the first resin layer is a reflection control layer, and the second resin layer is a light shielding layer. A resin composition layer forming step for reflection control layer for forming a resin composition layer for reflection control layer on a transparent substrate;
A solvent-free photocurable resin that can be developed on the reflection control layer resin composition layer with the same developer as the reflection control layer resin composition contained in the reflection control layer resin composition layer. A light shielding layer resin composition layer forming step of forming a light shielding layer resin composition layer using the composition;
The reflection control layer resin composition layer and the light shielding layer resin composition layer are exposed in a pattern, developed using the same developer, and heated to form the reflection control layer and the light shielding layer in the same pattern. Patterning process to form,
And a colored layer forming step of forming a colored layer of a plurality of colors in the opening of the light shielding layer on the transparent substrate.   The dry film containing the solventless photocurable resin composition is bonded onto the resin composition layer for the reflection control layer in the resin composition layer forming process for the light shielding layer. Item 5. A method for producing a color filter according to Item 4. A substrate,
A first resin layer formed in a pattern on the substrate;
A laminate having a second resin layer formed on the first resin layer in the same pattern as the first resin layer and containing a dye.   The laminate according to claim 6, wherein the first resin layer is a reflection control layer and the second resin layer is a light shielding layer. A transparent substrate;
A reflection control layer that is formed in a pattern on the transparent substrate and is a resin layer;
A light-shielding layer that is formed on the reflection control layer in the same pattern as the reflection control layer, is a resin layer, and contains a dye;
A color filter comprising: a plurality of colored layers formed in openings of the light shielding layer on the transparent substrate.

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