JP2003255118A - Color filter with photosensitive light scattering film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a color filter with a photosensitive light scattering film, which is easily manufactured without increasing the number of manufacturing steps and which prevents deterioration of resolution and lowering of contrast used for a reflective liquid crystal display device. <P>SOLUTION: Proportions of an alkali soluble photosensitive transparent resin, a photopolymerization initiator, a solvent and transparent particles in a resin composition for the photosensitive light scattering film to be used for formation of the light scattering film are 10-30 wt.% alkali soluble photosensitive transparent resin, 0.1-3 wt.% photopolymerization initiator and 5-20 wt.% transparent particles to 100 wt.% resin composition for the photosensitive light scattering film. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color filter used in a reflective liquid crystal display device, and more particularly to a color filter having a photosensitive light-scattering film formed on or under a color filter.

[0002]

2. Description of the Related Art Generally, a liquid crystal display device has a pair of opposing electrode substrates provided with a polarizing film and electrodes for driving the liquid crystal, and a liquid crystal enclosed between the electrode substrates. It is configured. In a color liquid crystal display device that displays a color image, a color filter layer is provided on either one of the pair of electrode substrates. When the screen is displayed, the voltage is applied between the opposing transparent electrodes to change the alignment state of the liquid crystal enclosed between the electrode substrates,
While controlling the plane of polarization of light that passes through this liquid crystal substance,
Its transmission and non-transmission is controlled by a polarizing film.

As a liquid crystal display device, an electrode substrate located on the back side (of the above-mentioned pair of electrode substrates, an electrode substrate located on the side opposite to the viewer with the liquid crystal sandwiched therebetween, hereinafter referred to as the back side electrode substrate). Note that a backlight-type or light-guide-type transmissive liquid crystal display device with a built-in lamp, in which a light source (lamp) is arranged on the back or side of the display and the screen is displayed by the light emitted from the light source, is widely used. .

In addition, liquid crystal display devices have been expected to be used for portable display devices such as mobile devices by taking advantage of their low power consumption and light weight. But,
The transmissive liquid crystal display device with a built-in lamp consumes a large amount of power due to a built-in light source (lamp), and consumes less power than a display device such as a CRT or a plasma display, but consumes substantially the same power. Therefore, the battery occupies a large proportion and the device is heavy and bulky. That is, the transmissive liquid crystal display device with a built-in lamp cannot be said to be able to take full advantage of the liquid crystal display device.

Therefore, a reflection type liquid crystal display device which does not have a built-in light source has been receiving attention. A reflective liquid crystal display device is provided with a reflection plate having a light reflection function or a reflection electrode that also serves as a liquid crystal driving electrode and a light reflection plate on the back side electrode substrate, and a viewer side electrode substrate (a pair of liquid crystal holding substrates Of the substrates of (1), the outside light such as room light or natural light is made incident on the inside of the liquid crystal display device from the side of the observer side (electrode substrate), and the incident light is reflected by the light reflection plate or the reflection electrode, and this reflection The screen is displayed by emitting light from the viewer-side electrode substrate. A reflective liquid crystal display device that does not have a built-in light source (lamp) can realize low power consumption.
The device can be made small, lightweight, and thin, and is suitable as a portable display device.

In the reflection type liquid crystal display device, it is necessary to assume that ambient light such as room light or natural light enters at any angle as long as it is portable and can be used at any place, and at the same time, only in a specific area. The light source of must be assumed. Therefore, in order to obtain a bright and clear screen display having an appropriate viewing angle, the light incident on the device is efficiently introduced into the liquid crystal, the reflected light is efficiently guided to the position of the observer, and the incident light is scattered. It will have a function.

Here, examples of the reflection / scattering method of incident light which has been conventionally used in the reflection type liquid crystal display device are shown in FIGS. 2, 3 and 4. The reflection type liquid crystal display device 200 with a back scattering film shown in FIG. 2 has the most basic structure, and has a light scattering film and a reflection plate outside without a light scattering / reflection function inside the liquid crystal cell. Is. Transparent substrate 2
01 and the transparent substrate 206, the color filter 204, the transparent electrode 205 for driving the liquid crystal, the liquid crystal 202, and the transparent electrode 206 are formed, and the light scattering reflection function is provided outside the display device. That is, the light-scattering film 210 and the reflection plate 203 are arranged outside the rear electrode substrate 208, and the observer-side electrode substrate 2 is provided.
The light incident from 07 passes through the rear electrode substrate 208, is then returned by the reflection plate 203 in contact with the light scattering film 210, passes through the light scattering film 210 again, becomes scattered light 215, and returns to the display device.

The reflection type liquid crystal display device 200 with a back scattering film shown in FIG. 2 is easy to manufacture, but on the other hand, the light scattering film having a light scattering reflection function and the reflection plate are composed of a liquid crystal for displaying an image and a transparent substrate. Since they are separated by the thickness, the resolution is degraded.

In the reflection type liquid crystal display device 300 with a front scattering film shown in FIG. 3, a light scattering film is provided on the front surface to cause light scattering. That is, the light-scattering film 309 that causes refraction and diffraction of light is disposed on the surface of the transparent substrate 301 that constitutes the viewer-side electrode substrate 307 facing the viewer, and the other surface of the transparent substrate 301 is provided. A color filter 304 and a liquid crystal driving transparent electrode 305 are sequentially laminated. The rear electrode substrate 308 is provided with a reflective electrode 303 that also serves as a light reflecting plate and an electrode for driving a liquid crystal.
The liquid crystal 302 is sandwiched between 7 and the rear electrode substrate 308. The reflective electrode 303 has a flat surface and specularly reflects the light incident on the reflective electrode, and light scattering is performed by the light scattering film 309 provided on the observer-side electrode substrate 307.

In the light scattering film as shown in FIG. 3, the incident light 314 to the light scattering film is a forward scattered light 317 which is scattered in the traveling direction of the incident light to the light scattering film, and a part of the incident light. There is backscattered light 316 that scatters toward the back of the light scattering film (on the side opposite to the incident direction). In the reflective liquid crystal display device 300 with the front scattering film shown in FIG.
Is light returning without entering the liquid crystal 302, which not only does not contribute to the screen display but also causes a reduction in the contrast of the screen.

In the above-described reflective liquid crystal display device 200 with a back scattering film shown in FIG. 2 and the reflective liquid crystal display device 300 with a front scattering film shown in FIG. 3, the place where light is scattered is a liquid crystal. The rear side electrode substrate 208 shown in FIG. 2 or the observer side electrode substrate 307 shown in FIG.
Since the resolution deteriorates depending on the thickness of the film, it is not suitable for a high-definition display device. Usually, the pixel size is several tens of μm, while the thickness of the transparent substrate 206 or the transparent substrate 301 is about several hundreds μm, which significantly deteriorates the resolution. This may be a fatal weak point for a small portable display device such as a mobile device.

In the reflection type liquid crystal display device 400 with a scattering reflector shown in FIG. 4, an observation in which a transparent substrate 401 is sequentially laminated with a color filter 404 for coloring transmitted light into a predetermined color and a transparent electrode 405 for driving liquid crystal. The liquid crystal 402 is sandwiched between the person-side electrode substrate 407 and the back-side electrode substrate 408. On the back side electrode substrate 408, a reflection electrode 403 that serves as both a light reflection plate and an electrode for driving a liquid crystal is provided. By forming the surface of the reflective electrode 403 to be uneven, the light incident on the reflective electrode 403 is reflected as scattered light.

In the light scattering method shown in FIG. 4, there is no light loss except that the incident light is partially absorbed by the reflecting electrode, so that the light utilization efficiency is excellent and there is no backscattering, so that the deterioration of the contrast is small. However, in forming the surface irregularities of the reflective electrode 403, it is necessary to use a photolithography method, that is, processing steps such as coating, exposing, developing, baking, and forming a metal thin film of a photosensitive resin. Therefore, the number of manufacturing steps increases and the manufacturing yield increases. Inevitably, manufacturing costs will rise, such as declines.

[0014]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a reflection type liquid crystal display device with a back scattering film shown in FIG. , And the reflective liquid crystal display device with a front scattering film shown in FIG. 3, the reflective liquid crystal display device is not provided at a position away from the liquid crystal through the transparent substrate, that is, at a position as close to the liquid crystal as possible. To provide a color filter with a photosensitive light-scattering film that can be easily manufactured without increasing the number of manufacturing steps of the color filter with a light-scattering film that prevents deterioration of the resolution as described above and prevents a decrease in contrast. Is an issue.

[0015]

The present invention relates to a color filter having a color filter layer and a photosensitive light-scattering film formed on a transparent substrate, and a photosensitive light-scattering film used for forming the photosensitive light-scattering film. Resin composition is a photosensitive light-scattering film resin composition comprising at least an alkali-soluble photosensitive transparent resin, a photopolymerization initiator, a solvent, and transparent particles,
The composition ratio of the alkali-soluble photosensitive transparent resin, the photopolymerization initiator, the solvent, and the transparent particles in the photosensitive light-scattering film resin composition is 100% by weight of the photosensitive light-scattering film resin composition.
In contrast, the alkali-soluble photosensitive transparent resin is 10 to 30% by weight, the photopolymerization initiator is 0.1 to 3% by weight, and the transparent particles are 5 to 5% by weight.
20% by weight is a color filter with a photosensitive light-scattering film.

In the color filter with a photosensitive light-scattering film according to the present invention, the composition of the resin composition for the photosensitive light-scattering film is 100% by weight of the resin composition for the photosensitive light-scattering film. 1-20% by weight of photopolymerizable monomer
It is a color filter with a photosensitive light-scattering film characterized by containing.

Further, the present invention provides the color filter with a photosensitive light-scattering film according to the above-mentioned invention, in which the coating film of the alkali-soluble photosensitive transparent resin is determined by the refractive index of the resin composition for the photosensitive light-scattering film. The ratio of the larger value to the smaller value of the refractive index and the refractive index of the transparent particles is [1.2 or less: 1.0]
And the particle size of the transparent particles is 1.0 μm or more and 5.0
A color filter with a photosensitive light-scattering film, which is characterized by having a thickness of less than μm.

The present invention also provides a color filter with a photosensitive light-scattering film according to the above invention, wherein the composition of the resin composition for the photosensitive light-scattering film has a non-volatile component amount (A) other than transparent particles, and Volume ratio of total amount (B) of transparent particles (B /
A) is a color filter with a photosensitive light-scattering film, which is 0.2 or more and 1.2 or less.

The present invention also provides, in the color filter with a photosensitive light-scattering film according to the above-mentioned invention, a weight% value of a non-volatile component relative to 100% by weight of the resin composition for the photosensitive light-scattering film and the photosensitive light-scattering film. A color filter with a photosensitive light-scattering film, wherein the product of the resin composition and the square root of the viscosity value (mPa) at 25 ° C. is 20 or more and 450 or less.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a color filter with a photosensitive light-scattering film according to the present invention will be described in detail below. Examples of the alkali-soluble photosensitive transparent resin that can be used in the photosensitive light-scattering film resin composition of the present invention include alkyl acrylate, alkyl methacrylate,
Acrylic transparent resin consisting of acrylic monomer such as cyclic acrylate, cyclic methacrylate, hydroxyethyl ethyl acrylate, hydroxyethyl methacrylate and radical polymerizable monomer having ethylenically unsaturated group, epoxy acrylate transparent resin having fluorine or silicon, An epoxy acrylate transparent resin having a fluorene skeleton can be used.

The photopolymerization initiator added for partially exposing the coating layer of the resin composition for the photosensitive light-scattering film in the present invention and photocuring it by a polymerization method is not particularly limited, but an acetophenone compound, Imidazole compounds,
Examples thereof include benzophenone-based compounds, benzoin ether-based compounds, oxime ketone-based compounds, and acylphosphine oxide-based compounds, but are not limited thereto. If necessary, two or more kinds of photopolymerization initiators may be mixed and used.

The resin composition for the photosensitive light-scattering film according to the present invention needs to be coated on a transparent substrate in a film thickness of 1 to 10 μm, and therefore a solvent is usually used to impart a viscosity in order to impart coating suitability. Make adjustments. Examples of the solvent include alcohols, ketones, esters and the like. For example,
Methanol, ethanol, propanol, isopropyl alcohol, n-butanol, tert-butanol,
2-methylpropyl alcohol, toluene, xylene,
Cyclohexane, isophorone, cellosolve acetate,
Diethylene glycol dimethyl ether, ethylene glycol diethyl ether, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, isoamyl acetate, ethyl acetate, ethyl lactate, methyl ethyl ketone, acetone, cyclohexanone, chloroform, dichloromethane, tetrachloromethane, 1,4-dioxane, tetrahydrofuran , N-pentane, n-hexane, n-heptane, 2-methoxyethanol, 2-ethoxyethanol, 2-butoxyethanol, 2-ethoxyethyl acetate, 2-butoxyethyl acetate, 2-methoxyethyl acetate, 2
-Ethoxyethyl ether, 2- (2-ethoxy) ethoxyethanol, 2- (2-butoxy) ethoxyethanol, 2- (2-ethoxy) ethoxyethyl acetate, 2- (2-butoxy) ethoxyethyl acetate,
2-phenoxyethanol and the like can be mentioned, but the invention is not limited thereto. If necessary, two or more kinds of solvents may be mixed and used.

Examples of transparent particles that can be used in the resin composition for the photosensitive light-scattering film of the present invention include fine particles made of an inorganic material and fine particles made of an organic polymer. As the inorganic fine particles, amorphous fine particles such as silica or alumina oxide can be used, and as the organic polymer fine particles, fine particles made of silicon resin, melamine resin, and acrylic resin can be used, but not limited to these. If desired, two or more types of particles may be mixed and used.

When the photopolymerization initiator is 0.1% by weight or less, the crosslink density of the alkali-soluble photosensitive transparent resin is weak,
It is easy for the pattern to fall off during alkali development. Further, if it is 3% by weight or more, the storage stability of the resin composition for the photosensitive light-scattering film is deteriorated. Also, the transparent particles are 5% by weight.
When it is below, the light scattering property is weak and the preferable light scattering property cannot be obtained. On the other hand, when the content is 20% by weight or more, the occupation rate of particles in the film becomes too high during film formation, and the particles protrude from the film surface, resulting in a matte surface.

The resin composition for a photosensitive light-scattering film in the present invention contains a photopolymerizable monomer, in a particularly preferable embodiment. As the photopolymerizable monomer used, a compound capable of radical polymerization (or crosslinking) reaction is used, and (meth) acrylic acid, methyl (meth) acrylate, butyl (meth) acrylate, benzyl (meth) acrylate, 2-hydroxy Various (meth) acrylic acid esters such as ethyl (meth) acrylate and 2-hydroxypropyl (meth) acrylate, ethylene glycol di (meth) acrylate, pentaerythritol tri (meth) acrylate, trimethylolpropane tri (meth) acrylate, styrene , Divinylbenzene, (meth) acrylamide, vinyl acetate, N-hydroxymethyl (meth) acrylamide, dipentaerythritol hexa (meth) acrylate, melamine acrylate, epoxy acrylate prepolymer, etc. Including but not limited to. In particular, it is preferable to use a polyfunctional (meth) acrylic monomer in terms of exposure sensitivity and various properties after curing.

When the photopolymerizable monomer is added, the crosslink density is increased and the resistance and strength are improved, but if it is 20% by weight or more, it becomes too hard and the adhesion strength is lowered and the pattern is easily peeled off.

FIG. 1 is a sectional view schematically showing an embodiment in which an observer-side electrode substrate having a transparent electrode formed on a color filter with a photosensitive light-scattering film according to the present invention is used in a reflective liquid crystal display device. Is. When the light scattering film is formed in the liquid crystal cell (liquid crystal panel) as shown in FIG. 1, the upper limit of the film thickness of the photosensitive light scattering film 109 formed of the resin composition for the photosensitive light scattering film is about 10 μm. Yes, preferably 5 μm
It is the following. In order to obtain such a thin photosensitive light-scattering film 109 and to make the surface of the photosensitive light-scattering film flat, the transparent particles 112 dispersed in the alkali-soluble photosensitive transparent resin 113 are used. The thickness, that is, the particle diameter in the film thickness direction is preferably in the range of 1.0 μm to 5.0 μm.

In order to obtain preferable light scattering characteristics in the resin composition for the photosensitive light scattering film of the present invention, the particle diameter of the transparent particles and the ratio of the refractive index of the transparent particles to the alkali-soluble photosensitive transparent resin are set. Must be appropriate. When the difference in refractive index is widened, the characteristic curve of light scattering in FIG. 5 changes from the characteristic curve 502 to the characteristic curve 503. The vicinity of specular reflection is reduced, and the light is reflected more widely. The ratio of the refractive index of the coating film of the alkali-soluble photosensitive transparent resin and the refractive index of the transparent particles, whichever is smaller, is larger than 1.2: 1.
0], the turbidity becomes too high to be used as a light scattering film, and the image characteristics deteriorate when a liquid crystal cell is formed.

Further, when the particle size of the transparent particles is changed, the reflection characteristic changes. Even if the same material is used, the scattering efficiency increases as the particle size becomes smaller. The incident light has more chances to collide with the particles, and the scattering angle expands in combination with the effect of diffraction. That is, by making the particle size fine, the characteristic curve of light scattering in FIG. 5 decreases in the vicinity of regular reflection and increases in lateral spread, and changes in the direction of the arrow, that is, from the characteristic curve 502 to the characteristic curve 503.

The optimum particle size of the transparent particles is preferably a light-scattering film whose reflected light becomes high in the vicinity of 15 ° with respect to -30 ° incident light. Therefore, the sulfuric acid standard white plate 501 shown in FIG.
When 2 is around 15 °, the reflectance is high and good. The specific particle size is 1.0 μm or more and 5.0 μm or less. The film thickness of the light-scattering film incorporated in the reflective liquid crystal display device is at most about 5 μm, and the upper limit of the particle size of the transparent particles is about the same as the film thickness. The transparent particles are preferably particles having a point-symmetrical shape and a smooth surface.

The mixing ratio of transparent particles to the alkali-soluble photosensitive transparent resin is mainly defined by the following light scattering characteristics, reliability, and film forming conditions.

1) When the mixing amount of the transparent particles 112 is increased, the characteristic curve of light scattering in FIG. 5 changes from the characteristic curve 502 to the characteristic curve 503. This is because when the number of transparent particles is increased, the incident light collides with more transparent particles when passing through the film, and the scattering efficiency is increased. However, the effect of widening the scattering angle is small when the mixing amount is changed, as compared with the case where the refractive index or the particle size is changed. Nonvolatile components other than transparent particles in the resin composition for a photosensitive light-scattering film when viewed from the light-scattering property, that is, when a photopolymerizable monomer is not contained, a nonvolatile component (A of the alkali-soluble photosensitive transparent resin). ) And the total volume (B) of transparent particles (B / A) is 0.2 or more and 1.2 or less is a practical range, and preferably,
It is 0.6 or more and 1.2 or less.

2) The amount of the transparent particles mixed with the alkali-soluble photosensitive transparent resin is related to the adhesiveness of the light scattering film to the color filter or the substrate glass, such as moisture resistance, solvent resistance and chemical resistance. Is related to the reliability of the light scattering film. Generally, it is preferable that the number of transparent particles is small. The limit that can maintain the physical properties of the light-scattering film without impairing the light-scattering effect is the nonvolatile component amount (A) of the alkali-soluble photosensitive transparent resin,
The volume ratio (B / A) of the total amount (B) of transparent particles is 1.0 or less, and preferably 0.8 or less.

3) The amount of transparent particles mixed with the alkali-soluble photosensitive transparent resin is related to the coating characteristics. In some cases, the ratio of the specific gravity of the resin solution of the alkali-soluble photosensitive transparent resin to that of the transparent particles is relatively close to 1. However, since the particle size of the transparent particles is relatively large when viewed as a powder, when the specific gravity of the transparent particles exceeds 1.5, the particles tend to settle. Further, if the amount of the transparent particles is increased more than necessary in the alkali-soluble photosensitive transparent resin liquid, the surface flatness of the film is deteriorated at the time of forming the coating film, and the quality of the photosensitive light scattering film is deteriorated. The volume ratio (B / A) of the proper amount (A) of the non-volatile component of the transparent resin and the total amount (B) of the transparent particles in view of the coating characteristics is 1.2 or less.

From the above 1), 2) and 3), when the photopolymerizable monomer is not contained, the volume of the non-volatile component (A) of the alkali-soluble photosensitive transparent resin and the total amount (B) of the transparent particles. The ratio (B / A) is in the practical range of 0.2 or more and 1.2 or less, preferably 0.5 or more and 0.8 or less.

When the transparent particles are inorganic particles such as silica,
As a dispersion aid with an alkali-soluble photosensitive transparent resin, a silane coupling agent, a tin ternet coupling agent,
Aluminate coupling agents are effective.

The thickness of the photosensitive light-scattering film 109 incorporated in the reflection type liquid crystal display device 100 shown in FIG. 1 is preferably as thin as possible. The current film thickness is at most about 10 μm, more preferably 5 μm or less. It has been described above that the film thickness is limited, that is, the amount of transparent particles present in the film is regulated, and the diameter of transparent particles is also regulated. As described above, the amount of transparent particles in the light-scattering film of the present invention, and thus the various characteristics of the photosensitive light-scattering film, are regulated.

As described above, the thin photosensitive light-scattering film 109 has an upper limit of film thickness of 10 μm, preferably 5 μm or less.
Therefore, in order to efficiently scatter light and to provide a desired light scattering property, it is necessary to fill the photosensitive light scattering film with transparent particles as densely as possible. Further, in order to reduce the film thickness of the photosensitive light scattering film to 5 μm or less, it is necessary to arrange the transparent particles in a single layer in the film thickness direction. Incidentally, the photosensitive light-scattering film 109 shown in FIG. 1 is an example in which the transparent particles 112 are arranged in a single layer.

As means for forming the photosensitive light-scattering film composition of the present invention as a coating film, gravure printing, a roll coater, a dip coater, a spin coater, a die coater or the like can be applied. However, it is important for the light scattering film used in the reflective liquid crystal display device to have a uniform film thickness, and a spin coater is particularly suitable. The photosensitive light-scattering film composition of the present invention provides a suitable light-scattering film when formed into a film by a spin coater.

The film thickness of the coating liquid at the end of rotation of the spin coating which rotates at a constant speed is represented by the mathematical formula (1), assuming that the coating liquid does not change due to the influence of the wind.

[0041]

[Equation 1]

The dry film thickness H at the end of the rotation can be given by the equation (3).

[0043]

[Equation 2]

Particularly, the parameters that regulate the coating film thickness h at the end of the rotation are mainly the rotation speed and the rotation time, and the initial liquid amount h ₀ has almost no influence. The characteristic values of the coating liquid that regulate the coating liquid film thickness h at the end of rotation are mainly the coating liquid density and viscosity, and the parameters related to the final film thickness are the coating liquid density and
It is the weight percentage of the non-volatile components and the density of the dry film after the solvent volatilization.

The parameter values will be described below.

Coating liquid film thickness h _{0 at the} start of rotation: It is the amount of the coating liquid droplet before the start of rotation, but one item of the denominator of the formula (1) is extremely smaller than the two items and can be ignored.

Coating liquid density ρ: The specific gravity of the transparent particles in the present invention is about 1.15 to 2.1, and the specific gravity of the alkali-soluble photosensitive transparent resin is about 1.1 to 1.3. The specific gravity of the organic solvent having good coating characteristics is 0.9 to 1.0. Even when various transparent particles having different specific gravities are dispersed in the transparent resin, the ratio of the transparent particles in the coating liquid is at most 10
%, Which is relatively small as an element that changes the specific gravity of the coating liquid. Actual coating density is 0.97 to 1.03
It is limited to (g / cm ³ ).

Rotational speed ω: The factors that determine the rotational speed include the desired film thickness of the coating film and the capability of the coating device.
If the rotation speed is higher than necessary, foreign matter may be mixed in and air turbulence may occur. Also, if the rotation speed is slow, the rotation time becomes long to obtain a predetermined film thickness, the tact is extended, and the production capacity is lowered.
Moreover, the uniformity of the coating film deteriorates. From the above viewpoint, several 10c
When forming a coating film on a m-square large-sized glass substrate, the rotational speed in practice is from several 100 rpm to around 1000 rpm.

Rotation time t: Factors that determine the rotation time include the desired film thickness of the coating film and the capability of the coating device.
If the rotation time is shorter than necessary, the leveling property of the coating liquid is lost and the uniformity of the coating film is deteriorated. Therefore, the preferable rotation time is 10 seconds or more, more preferably 15 seconds or more.

Film thickness after drying H: The film formed on the surface of the color filter is desired to be as thin as possible so long as its function can be guaranteed. In this embodiment, the photosensitive light-scattering film is formed on the front substrate of the liquid crystal display device and has a maximum film thickness of 10 μm, more preferably 5 μm or less.

Dry film density ρ ': When no photopolymerizable monomer is contained, the density of the transparent particles is 1.15 to 1.95 (g.
/ Cm ³ ), and the density of the alkali-soluble photosensitive transparent resin is about 1.1 to 1.3 (g / cm ³ ). The volume ratio of the transparent particles and the alkali-soluble photosensitive transparent resin mixed was 0.
2 to 1.2. When the density of the dry film is maximum in this range, the density of the transparent particles is 2.0 (g / cm ³ ) and the density of the alkali-soluble photosensitive transparent resin is 1.3 (g / cm ³ ).
³ ), and the mixing volume ratio is 1.2 (Case 1). The density of the dry film at this time is 1.68 (g / cm ³ ). Similarly, when the density of the dry film is the minimum, the density of the transparent particles is 1.15 (g / cm ³ ) and the density of the alkali-soluble photosensitive transparent resin is 1.1 (g / cm ³ ). This is the case where the volume ratio is 0.2 (case 2), and the density of the dry film at this time is 1.11 (g / cm ³ ).

Nonvolatile component NV: usually 15 in relation to coating property
Optimum coating suitability and optimum film properties are observed at different levels in the range of wt% to 35 wt%. The lower the value, the better the coating suitability, but the film characteristics tend to deteriorate. In particular, when the film thickness and the transparent particle diameter are close to each other and the volume ratio of the total amount of the transparent particles to the amount of the alkali-soluble photosensitive transparent resin is 1 or more, the solvent component is increased and the NV is lowered, the film surface becomes uneven. It is easy to become. It is preferable for the film properties to set the nonvolatile component as high as possible.

Viscosity η: Low viscosity is excellent in workability in relation to coating property. Usually, 10 (mPa) to 30 (mPa) is good. Factors that influence the viscosity are the material of the transparent particles, the particle size, the compatibility with the solvent, the mixing amount, the type and molecular weight of the transparent resin, the compatibility with the solvent, the viscosity of the solvent, the amount of non-volatile components, and the like.

From the above, 1 / in the equations (1) and (2)
Substituting h ₀ ² = 0, t = 12, and ρ = 1, the formula (4) is obtained. Equation (4) is added to equation (5) obtained from equation (3).
By substituting to obtain equation (6).

[0055]

[Equation 3]

Converting the unit system into practical units, the following equation (7)
Equation (8) is obtained. H → [H]: cm → μm, η → [η]: Poise → m
Ps, NV → [NV]: ratio →%, ω → [ω]: radian / s → rpm

[0057]

[Equation 4]

From the above, the range of Expression (8) is obtained. However, since [ω] and [H] in the equation (8) are in inverse proportion to each other, the minimum value of [H] is the maximum value of [ω] and the minimum value of [H] is the minimum value of [ω]. The maximum value corresponds. Effectively, the range is determined by the size of ρ '. That is, when the formula (9) is used, a photosensitive light-scattering film composition capable of producing the desired light scattering can be obtained.

FIG. 1 is a sectional view schematically showing an embodiment in which an observer-side electrode substrate having a transparent electrode formed on a color filter with a photosensitive light-scattering film according to the present invention is used in a reflection type liquid crystal display device. Is. As shown in FIG. 1, a color filter 10 with a photosensitive light-scattering film according to the present invention includes a transparent substrate 1
01, the color filter layer 104 and the photosensitive light-scattering film 10.
9 is formed. In addition, the observer side electrode substrate 1
Reference numeral 07 shows the transparent electrode 105 formed on the color filter 10 with the photosensitive light scattering film. In the observer-side electrode substrate 107, first, on the transparent substrate 101 such as a glass substrate, the color filter layer 104 having the transmitted light as the colored light is formed by using a known pigment dispersion method or a dyeing method,
A photosensitive light-scattering film 109 is formed on the color filter layer 104 by using the resin composition for the photosensitive light-scattering film, for example, with a film thickness of 3 μm, and on the photosensitive light-scattering film 109, for example, The transparent electrode 105 of ITO (mixed oxide of indium oxide and tin oxide) is formed.

The above-mentioned observer-side electrode substrate 107 and an electrode substrate (a back-side electrode substrate 10) having a light reflection function, which is separately prepared.
The liquid crystal 102 is sandwiched in 8) to form the reflection type liquid crystal display device 100 shown in FIG. The back side electrode substrate 10
Since 8 has a light reflecting function, a light reflecting plate and an electrode for driving a liquid crystal may be separately formed, or a reflecting electrode that serves as both a light reflecting plate and an electrode for driving a liquid crystal may be used. . By the way, the reflective electrode 103 is formed on the back electrode substrate 108 in FIG. 1, and the reflective electrode 103 is flat so that the photosensitive light scattering film 109 causes light scattering. Further, as the constituent members of the reflection type liquid crystal display device 100, a polarizing film, an alignment film and the like can be mentioned in addition to the above, but they are not shown in FIG. 1 for convenience of description.

Examples of the photosensitive light-scattering film according to the present invention are listed as follows: 1) An acrylic alkali-soluble photosensitive transparent resin having a refractive index of 1.56 is used as transparent particles having an average particle diameter of 2 μm and a refractive index of 1. 44 in which silicon resin particles are dispersed, 2) Acrylic alkali-soluble photosensitive transparent resin having a refractive index of 1.56, silica particles having a mean particle size of 2 μm and a refractive index of 1.44 as transparent particles, and a mean particle. Diameter 2.5 μm Refractive index 1.
43 in which a silicon resin is dispersed, 3) an alkali-soluble photosensitive resin having a fluorene skeleton with a refractive index of 1.61 and an average particle size of 1.8 μm as transparent particles.
m, a dispersion of acrylic particles having a refractive index of 1.49, and the like. The examples 1), 2), and 3) above are particle-dispersion type coating liquids in which transparent particles are dispersed in a photosensitive transparent resin, using a photolithography method or the like, at a predetermined location, at a predetermined pattern. It can be molded into a shape. Various dispersing aids, leveling agents, and coupling agents may be used as additives in the alkali-soluble photosensitive transparent resin in order to disperse the transparent particles.

[0062]

EXAMPLES Examples of the present invention will be described below. Example 1 A glass substrate is used as the transparent substrate 101,
R (red), G on a glass substrate by a known pigment dispersion method.
A color filter layer 104 composed of (green) and B (blue) was formed. Next, a coating solution in which transparent particles were dispersed in a transparent resin solution was applied onto the color filter layer, dried, exposed, developed and baked to form a photosensitive light scattering film 109. Resin composition for photosensitive light-scattering film It was prepared by the following composition. -Alkali-soluble photosensitive transparent resin A1: Acrylic transparent resin having an ethylenically unsaturated group in the side chain ... 4.5 parts by weight-Transparent particles B1: Tospearl 120 (GE Toshiba Silicon Co., Ltd. )) 2 parts by weight Photopolymerization initiator C: Irgacure 819 (Ciba Specialty Chemicals Co., Ltd.) 0.45 parts by weight Solvent D: Cyclohexanone ... 26 parts by weight

Mixing A1 and C, coating, drying and exposing (2
00 mJ / cm ² ), and the transparent film after development and baking at 230 ° C. for 60 minutes had a refractive index of 1.52 (D line 589 nm).
The above A1, B1, C and D are in a weight ratio of A1: B1: C: D.
= 4.5: 2: 0.45: 26 was mixed and stirred with a medialess disperser for 3 hours to obtain a resin composition for a photosensitive light-scattering film. At this time, the viscosity was 20 cp / 25 ° C.

After the above composition was dropped on the color filter,
Rotate the color filter substrate at 990 rpm for 10 seconds,
It was dried and pre-baked on a hot plate at 70 degrees for 15 minutes. Next, after exposure (200 mJ / cm ² ), 2.5%
It was developed with an aqueous sodium carbonate solution and thoroughly washed with water. Then, it was dried and baked at 230 ° C. for 60 minutes to form a photosensitive light-scattering film. The characteristic values of the film at this time are shown in Table 1. Next, after forming the photosensitive light-scattering film, a transparent electrode of ITO is formed on the photosensitive light-scattering film by a known sputtering method, and the transparent electrode 105 is formed on the color filter 10 with the photosensitive light-scattering film. Thus, the viewer-side electrode substrate 107 was obtained.

Observer-side electrode substrate 1 obtained in the above process
The liquid crystal 102 was sandwiched between 07 and an electrode substrate (rear side electrode substrate 108) having a light reflection function, which was prepared separately, to prepare the reflective liquid crystal display device 100 shown in FIG. It should be noted that in order to give the back side electrode substrate a light reflecting function, a light reflecting plate and a liquid crystal driving electrode are separately formed, or a light reflecting plate and a liquid crystal driving electrode are also used as a reflecting electrode. May be formed. By the way, the back electrode substrate 108 of FIG. 1 is formed with a reflection electrode 103 which also serves as a light reflection plate and an electrode for driving a liquid crystal, and is reflected by the photosensitive light scattering film 109 to cause light scattering. The surface of the electrode is flat. In addition to the components described above as the components of the reflective liquid crystal display device, a polarizing film, an alignment film and the like can be mentioned, but they are omitted in FIG.

<Embodiment 2> As in Embodiment 1, the transparent substrate 1 is used.
The color filter layer 104 made of R (red), G (green), and B (blue) was formed on No. 01. Then, a coating solution in which transparent particles are dispersed in a transparent resin solution is applied onto the color filter layer, dried, exposed, developed and baked to form a photosensitive light scattering film 109.
Was produced. Resin composition for photosensitive light-scattering film It was prepared by the following composition. -Alkali-soluble photosensitive transparent resin A1: Acrylic transparent resin having an ethylenically unsaturated group in the side chain ... 4.5 parts by weight-Transparent particles B1: Tospearl 120 (GE Toshiba Silicon Co., Ltd. )) 1.5 parts by weight Transparent particles B2: Seahost KE-P250 (manufactured by Nippon Shokubai Co., Ltd.) 0.5 parts by weight Photoinitiator C: Irgacure 819 (Ciba Specialty Chemicals Co., Ltd.) 0.45 parts by weight Solvent D: Cyclohexanone 26 parts by weight

Mixing A1 and C, coating, drying and exposing (2
00 mJ / cm ² ), and the transparent film after baking at 230 ° C. for 60 minutes after development had a refractive index of 1.61 (D line 589 nm).
The above A1, B1, B2, C and D are in a weight ratio of A1: B1:
B2: C: D = 4.5: 1.5: 0.5: 0.45: 2
6 was mixed and stirred with a medialess disperser for 3 hours to obtain a photosensitive light-scattering film resin composition. The viscosity at this time is 20 cp
/ 25 ° C.

After the above composition was dropped on the color filter,
Rotate the color filter substrate at 990 rpm for 10 seconds,
It was dried and pre-baked on a hot plate at 70 degrees for 15 minutes. Next, a patterning mask is overlaid and exposed (20
After 0 mJ / cm ² ) it was developed with a 2.5% aqueous sodium carbonate solution and thoroughly washed with water. After that, it is dried and 230 ℃ 60
Photosensitive light-scattering film 109 patterned by baking for minutes
Was formed. The characteristic values of the film at this time are shown in Table 1.

Next, after forming the above-mentioned photosensitive light-scattering film 109, I is formed on the photosensitive light-scattering film by a known sputtering method.
The transparent electrode 105 of TO was formed into a film, and the viewer-side electrode substrate 107 was obtained in which the transparent electrode 105 was formed on the color filter 10 with the photosensitive light-scattering film. The liquid crystal 102 is sandwiched between the observer-side electrode substrate obtained in the above process and an electrode substrate (rear-side electrode substrate 108) having a light reflection function, which is separately prepared.
The reflective liquid crystal display device 100 shown in FIG. 1 was produced. It should be noted that in order to give the back side electrode substrate a light reflecting function, a light reflecting plate and a liquid crystal driving electrode are separately formed, or a light reflecting plate and a liquid crystal driving electrode are also used as a reflecting electrode. May be formed. By the way, the back electrode substrate 108 of FIG. 1 is formed with a reflection electrode 103 which also serves as a light reflection plate and an electrode for driving a liquid crystal. The reflection electrode 103 causes light scattering by the photosensitive light scattering film. Has a flat surface. In addition to the components described above as the components of the reflective liquid crystal display device, a polarizing film, an alignment film and the like can be mentioned, but they are omitted in FIG.

<Embodiment 3> As in Embodiment 1, the transparent substrate 1 is used.
The color filter layer 104 made of R (red), G (green), and B (blue) was formed on No. 01. Next, a coating liquid in which transparent particles were dispersed in a transparent resin solution was applied onto a color filter, dried, exposed, developed and baked to form a photosensitive light scattering film 109. Resin composition for photosensitive light-scattering film It was prepared by the following composition. -Alkali-soluble photosensitive transparent resin A2: epoxy acrylate resin having a fluorene skeleton-4.5 parts by weight-Transparent particles B3: MX180 (manufactured by Soken Chemical Industry Co., Ltd.)-2 parts by weight- Photoinitiator C: Irgacure 819 (manufactured by Ciba Specialty Chemicals Co., Ltd.) 0.45 parts by weight Solvent D: cyclohexanone 21 parts by weight

Mixing A2 and C, coating, drying and exposing (2
00 mJ / cm ² ), and the transparent film after baking at 230 ° C. for 60 minutes after development had a refractive index of 1.61 (D line 589 nm).
The above A2, B3, C and D are in a weight ratio of A2: B3: C: D.
= 4.5: 2: 0.45: 21 was mixed and stirred with a medialess disperser for 3 hours to obtain a photosensitive light-scattering film resin composition. At this time, the viscosity was 12 cp / 25 ° C. After the above composition was dropped on the color filter, the color filter substrate was rotated at 770 rpm for 10 seconds, dried, and prebaked at 70 degrees for 15 minutes on a hot plate. Next, a patterning mask is overlaid and exposed (200 mJ / cm ² ).
Then, it was developed with a 2.5% sodium carbonate aqueous solution and thoroughly washed with water. Then, it was dried and baked at 230 ° C. for 60 minutes to form a patterned photosensitive light-scattering film 109. The characteristic values of the film at this time are shown in Table 1.

Then, after forming the photosensitive light-scattering film 109, I is formed on the photosensitive light-scattering film by a known sputtering method.
The transparent electrode 105 of TO was formed into a film, and the viewer-side electrode substrate 107 was obtained in which the transparent electrode 105 was formed on the color filter 10 with the photosensitive light-scattering film. The liquid crystal 102 is sandwiched between the observer-side electrode substrate 107 obtained in the above process and an electrode substrate (rear-side electrode substrate 108) having a light reflection function, which is separately prepared, and the reflection-type liquid crystal display device 100 shown in FIG. It was created. In addition, in order to give the back electrode substrate 108 a light reflecting function, a light reflecting plate and a liquid crystal driving electrode may be separately formed, or a light reflecting plate and a liquid crystal driving electrode may be used in combination. The electrodes may be formed. By the way, the back electrode substrate 108 of FIG. 1 is formed with a reflection electrode 103 which also serves as a light reflection plate and an electrode for driving a liquid crystal, and the reflection electrode 103 causes light scattering by the photosensitive light scattering film. The surface of 103 is flat. In addition to the components described above as the components of the reflective liquid crystal display device, a polarizing film, an alignment film and the like can be mentioned, but they are omitted in FIG.

<Example 4> As in Example 1, the transparent substrate 1 was used.
The color filter layer 104 made of R (red), G (green), and B (blue) was formed on No. 01. Next, a coating solution in which transparent particles are dispersed in a transparent resin solution is applied onto the color filter 104, dried, exposed, developed and baked to form the photosensitive light-scattering film 1.
09 was produced. Resin composition for photosensitive light-scattering film It was prepared by the following composition. -Alkali-soluble photosensitive transparent resin A2: epoxy acrylate resin having a fluorene skeleton-4.5 parts by weight-Transparent particles B3: MX180 (manufactured by Soken Chemical Industry Co., Ltd.)-2 parts by weight- Photopolymerization initiator C: Irgacure 819 (manufactured by Ciba Specialty Chemicals Co., Ltd.) 0.45 parts by weight Solvent D: Cyclohexanone 21 parts by weight Photopolymerization monomer E: M400 (Manufactured by Toagosei Co., Ltd.) 2 parts by weight

A2, C and E were mixed, coated, dried, exposed (200 mJ / cm ² ), developed and baked at 230 ° C. for 60 minutes. The transparent film had a refractive index of 1.58 (D line 589 nm). . The above A2, B3, C, D and E are in a weight ratio of A2: B.
3: C: D: E = 4.5: 2: 0.45: 21: 2 was mixed and stirred with a medialess disperser for 3 hours to obtain a photosensitive light-scattering film resin composition. The viscosity at this time is 14 cp / 25
It was ℃.

After the above composition was dropped on the color filter 104, the color filter substrate was rotated at 910 rpm for 10 seconds, dried, and prebaked at 70 ° C. for 15 minutes on a hot plate. Next, a patterning mask was overlaid, exposed (200 mJ / cm ² ), developed with a 2.5% sodium carbonate aqueous solution, and sufficiently washed with water. Then dry it to 230
The patterned photosensitive light scattering film 109 was formed by baking at 60 ° C. for 60 minutes. The characteristic values of the film at this time are shown in Table 1. Next, after forming the photosensitive light-scattering film 109, a transparent electrode 105 of ITO is formed on the photosensitive light-scattering film by a known sputtering method, and the transparent electrode 105 is formed on the color filter 10 with the photosensitive light-scattering film. Thus, the viewer-side electrode substrate 107 having the film formed thereon was obtained.

Observer-side electrode substrate 1 obtained in the above process
The liquid crystal 102 was sandwiched between 07 and an electrode substrate (rear side electrode substrate 108) having a light reflection function, which was prepared separately, to prepare the reflective liquid crystal display device 100 shown in FIG. In addition, in order to give the back electrode substrate 108 a light reflecting function, a light reflecting plate and a liquid crystal driving electrode may be separately formed, or
It is also possible to form a reflective electrode that also serves as an electrode for driving a liquid crystal and a liquid crystal. By the way, the back side electrode substrate 1 of FIG.
On 08, a reflection electrode 103 which also serves as a light reflection plate and an electrode for driving a liquid crystal is formed, and the surface of the reflection electrode is flat because light is scattered by the photosensitive light scattering film. In addition to the components described above as the components of the reflective liquid crystal display device, a polarizing film, an alignment film and the like can be mentioned, but they are omitted in FIG.

Next, in order to see the effect of the light-scattering film in this embodiment, a film thickness meter (DEKTAK), a turbidimeter (manufactured by Nippon Denshoku Industries Co., Ltd., model number "NOH2000"), an automatic goniophotometer ( Murakami Color Research Laboratory, model number "GP-200"
Mold ”). The measurement results are shown in Table 1 below.

[0078]

[Table 1]

The embodiments of the present invention have been described above.
The embodiment of the present invention is not limited to the above description and drawings, and various modifications may be made according to the required specifications of the reflective liquid crystal display device such as material, film thickness, and particle size. It goes without saying that there is no such thing.

[0080]

INDUSTRIAL APPLICABILITY The present invention provides a composition of an alkali-soluble photosensitive transparent resin, a photopolymerization initiator, a solvent, and transparent particles of a resin composition for a photosensitive light scattering film used for forming a photosensitive light scattering film. The proportion is 10 to 30% by weight of the alkali-soluble photosensitive transparent resin with respect to 100% by weight of the resin composition for photosensitive light-scattering film,
The photopolymerization initiator is 0.1 to 3% by weight, and the transparent particles are 5 to 20%.
Since the resin composition for the photosensitive light-scattering film is contained by weight%, the color filter with the photosensitive light-scattering film produced by using the resin composition for the photosensitive light-scattering film has a position where the light-scattering film is arranged. A color filter with a photosensitive light-scattering film is provided at a position as close to the liquid crystal as possible to prevent deterioration of resolution as a reflection type liquid crystal display device and prevent deterioration of contrast. Also,
The color filter with the photosensitive light-scattering film can be easily manufactured without increasing the number of manufacturing steps.

Further, in the present invention, since the photopolymerizable monomer is contained in the resin composition for a photosensitive light-scattering film in an amount of 1 to 20% by weight, the crosslink density is increased, and the photosensitive light-scattering film is improved in durability and strength. It becomes the attached color filter. Further, in the present invention, in the above resin composition for a photosensitive light-scattering film, the ratio of the refractive index of the coating film or the refractive index of the transparent particles to the larger value is [1.2 or less: 1.0]. And the particle size of the transparent particles is 1.0 μm or more and 5.0 μm or less, so that a color filter with a photosensitive light-scattering film having a preferable turbidity is obtained.

Further, in the present invention, in the composition of the resin composition for the photosensitive light-scattering film, the volume ratio (B / B) between the amount (A) of non-volatile components other than the transparent particles and the total amount (B) of the transparent particles is set.
Since A) is 0.2 or more and 1.2 or less, it becomes a color filter with a photosensitive light-scattering film having excellent light-scattering properties and reliability of the light-scattering film.

In the present invention, the non-volatile component weight% value relative to 100% by weight of the photosensitive light-scattering film resin composition and the viscosity value (mP of the photosensitive light-scattering film resin composition at 25 ° C.
Since the product of a) and the square root is 20 or more and 450 or less,
A color filter with a photosensitive light-scattering film capable of producing a light-scattering film having a desired light-scattering property.

[Brief description of drawings]

FIG. 1 is a cross-sectional view schematically showing an embodiment in which an observer-side electrode substrate having a light-scattering film formed by using the photosensitive light-scattering film resin composition according to the present invention is used in a reflective liquid crystal display device. Is.

FIG. 2 is an explanatory diagram of an example of a reflection / scattering method of incident light in a reflective liquid crystal display device.

FIG. 3 is an explanatory diagram of an example of a reflection / scattering method of incident light in a reflective liquid crystal display device.

FIG. 4 is an explanatory diagram of an example of a reflection / scattering method of incident light in a reflective liquid crystal display device.

FIG. 5 is an explanatory diagram of a characteristic curve of light scattering.

[Explanation of symbols]

10 ... Color filter with photosensitive light-scattering film according to the present invention 100 ... Reflective liquid crystal display device 101 in which a light-scattering film is formed using the resin composition for a photosensitive light-scattering film according to the present invention, 106, 201, 209, 301, 306, 4
01, 406 ... Transparent substrates 102, 202, 302, 402 ... Liquid crystal 103, 303, 403 ... ... Color filter layers 204, 304, 404 ... Color filters 105, 205, 305, 405 ... Transparent electrodes 107, 207, 307, 407 ... Observer-side electrode substrates 108, 208, 308, 408 ... Back electrode substrate 109 ... Photosensitive light-scattering film 112 in the present invention ... Transparent particles 113 ... Transparent resin 114, 214, 314, 414 ... Incident light 115, 215, 315, 415 ... Scattered light 200 ... Example of reflection type liquid crystal display device with back scattering film 203.・ ・ ・ ・ ・ ・ ・ ・ Reflector 210, 09 cases of ............ light scattering film 300 .... example 400 .... scattering fitted with a reflector of a reflective liquid crystal display device with the front scattering film reflective type liquid crystal display device

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2H042 BA02 BA15 BA20                 2H048 BA45 BA48 BB02 BB08 BB26                       BB42                 2H091 FA02Y FA31Y FB04 FB12                       FD06 LA12 LA17

Claims (5)

[Claims] 1. A color filter having a color filter layer and a photosensitive light-scattering film formed on a transparent substrate, wherein the photosensitive light-scattering film resin composition used for forming the photosensitive light-scattering film is at least alkali. A resin composition for a photosensitive light-scattering film, comprising a soluble photosensitive transparent resin, a photopolymerization initiator, a solvent, and transparent particles, the alkali-soluble photosensitive resin in the resin composition for the photosensitive light-scattering film. Transparent resin, photopolymerization initiator,
The composition ratio of the solvent and the transparent particles is 10 to 30% by weight of the alkali-soluble photosensitive transparent resin and 0.1 to 100% by weight of the photopolymerization initiator with respect to 100% by weight of the resin composition for the photosensitive light scattering film.
3% by weight and 5 to 20% by weight of transparent particles. A color filter with a photosensitive light-scattering film. 2. The composition of the resin composition for a photosensitive light-scattering film contains 1 to 20% by weight of a photopolymerizable monomer with respect to 100% by weight of the resin composition for a photosensitive light-scattering film. The color filter with the photosensitive light-scattering film according to claim 1. 3. The refractive index of the photosensitive light-scattering film resin composition is larger than the smaller one of the refractive index of the coating film of the alkali-soluble photosensitive transparent resin and the transparent particles. The ratio is [1.2 or less: 1.0], and the particle size of the transparent particles is 1.0 μm or more and 5.0 μm or less, and the photosensitivity according to claim 1 or 2. Color filter with light scattering film. 4. The volume ratio (B / A) of the amount (A) of non-volatile components other than the transparent particles and the total amount (B) of the transparent particles is 0 in the composition of the resin composition for the photosensitive light scattering film. .2 or more 1.2
The color filter with a photosensitive light-scattering film according to claim 1, 2, or 3, wherein: 5. The color filter with a photosensitive light-scattering film according to claim 1, wherein the weight% value of the nonvolatile component is 100% by weight of the resin composition for the photosensitive light-scattering film. And 2 of the resin composition for the photosensitive light-scattering film
A color filter with a photosensitive light-scattering film, wherein the product of the square root of the viscosity value (mPa) at 5 ° C. is 20 or more and 450 or less.