JP2012141368A - Color filter for white light-emitting diode light source and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a color filter that may attain, in combination with an LED light source, contrast as high as that attained in combination with a CCFL light source, and a display device including the color filter and an LED light source.SOLUTION: A color filter for a white light-emitting diode light source includes at least red pixels, green pixels and blue pixels. Each of the red pixels includes, as a coloring material, C.I. Pigment Red 177 and C.I. Pigment Yellow 150, each of the green pixels includes, as a coloring material, C.I. Pigment Green 58 and C.I. Pigment Yellow 150, and each of the blue pixels includes, as a coloring material, a triarylmethane compound.

Description

  The present invention relates to a color filter used in a liquid crystal display device or an organic EL display device, and a display device including the color filter.

Conventionally, in a liquid crystal display device, a CCFL (cold cathode fluorescent lamp) light source has been used as a light source of a backlight.
In recent years, white light emitting diode light sources (hereinafter sometimes simply referred to as “LED light sources”) have been adopted in liquid crystal display devices in place of CCFL light sources from the viewpoints of low power consumption and expansion of color reproduction regions. (For example, Patent Document 1).

JP 2010-128310 A

  As a result of intensive studies by the present inventors, when comparing the CCFL light source and the LED light source, even when the same color filter is combined with these light sources, the contrast is higher when combined with the LED light source than when combined with the CCFL light source. It turns out that it falls.

Conventional color filters generally employ a method of miniaturizing pigments contained in pixels in order to increase contrast.
However, as a result of intensive studies by the present inventors, when the pigment is made finer than that of the color filter combined with the CCFL light source, crystals are precipitated and the yield in the manufacturing process is lowered.

  The present invention has been made to solve the above-described problems. Even when combined with an LED light source, the color filter has a contrast equal to or higher than that obtained when a conventional color filter and a CCFL light source are combined, and the color filter. It aims at providing a display apparatus provided with LED light source.

  As a result of intensive studies by the present inventors, a conventional color filter and a CCFL light source are used even when combined with an LED light source by using a specific color material instead of miniaturizing the pigment contained in the pixel of the color filter. As a result, it was found that a color filter having a contrast equal to or higher than that obtained by combining the above and the present invention was completed.

  That is, the color filter according to the present invention is a color filter for a white light emitting diode light source having at least a red pixel, a green pixel, and a blue pixel. I. Pigment red 177 and C.I. I. Pigment Yellow 150, and the green pixel is C.I. I. Pigment green 58 and C.I. I. Pigment Yellow 150 is contained, and the blue pixel contains a triarylmethane compound as a coloring material.

In the red pixel, C.I. I. Pigment Red (hereinafter sometimes simply referred to as “PR”) 254 and C.I. I. By containing pigment yellow (hereinafter, simply referred to as “PY”) 150, the contrast of the red pixel is improved.
In the green pixel, C.I. I. By including Pigment Green (hereinafter, also simply referred to as “PG”) 58 and PY150, the contrast of the green pixel is improved.
By containing a triarylmethane compound as a dye in the blue pixel, the contrast of the blue pixel is improved.
Since the contrast is increased in each of the red pixel, the green pixel, and the blue pixel, the contrast of the color filter is improved.

  In the color filter for a white light emitting diode light source according to the present invention, the red pixel further includes C.I. I. Pigment Red 254 and C.I. relative to the total mass of the color material of the red pixel. I. The content ratio of Pigment Red 177 is C.I. I. Pigment Red 254 content or more, and the green pixel further includes C.I. I. Pigment Yellow 138 and C.I. relative to the total mass of the color material of the green pixel. I. Pigment Yellow 150 has a content ratio of C.I. I. The content is preferably larger than the content ratio of Pigment Yellow 138.

  The color filter for a white light-emitting diode light source according to the present invention includes the C.I. I. Pigment Red 177 is 30 to 60% by mass, and the C.I. I. Pigment red 254 is contained in an amount of 15 to 30% by mass; I. It is preferable that the content rate of the pigment yellow 150 is 10 to 45 mass%.

  The color filter for a white light emitting diode light source according to the present invention has a C.I. I. Pigment Green 58 is 40 to 70% by mass, C.I. I. Pigment Yellow 150 is 5 to 40% by mass, C.I. I. The content ratio of Pigment Yellow 138 is preferably 5 to 15% by mass.

  In the color filter for a white light emitting diode light source according to the present invention, it is preferable that the peak of transmittance of the blue pixel exists at a wavelength of 400 to 450 nm and the maximum transmittance of the peak is 85% or more.

  The color filter for a white light-emitting diode light source according to the present invention can obtain a good contrast even when the white light-emitting diode light source is a light source that combines a blue light-emitting diode and an yttrium / aluminum / garnet phosphor.

  The color filter for a white light emitting diode light source according to the present invention can obtain a good contrast even when the white light emitting diode light source is a light source combining a blue light emitting diode and a red / green phosphor.

  A display device according to the present invention includes a white light emitting diode light source and the color filter for the white light emitting diode light source.

Even if it combines with a LED light source, the color filter for LED light sources which concerns on this invention has a contrast more than equivalent to the case where the conventional color filter and CCFL light source are combined.
Since the display device according to the present invention includes the color filter, even when combined with an LED light source, the display device has a contrast equivalent to or higher than that obtained when a conventional color filter and a CCFL light source are combined, and has excellent display quality.

FIG. 1 is a cross-sectional view schematically showing an example of a color filter for an LED light source according to the present invention. FIG. 2 is a cross-sectional view schematically showing another example of the color filter for LED light source according to the present invention. FIG. 3 is a cross-sectional view schematically showing an example of the liquid crystal display device of the present invention. FIG. 4 is a cross-sectional view schematically showing an example of the organic EL display device of the present invention. FIG. 5 is a graph showing the contrast when the color filter having the red pixel of the example and the comparative example is combined with the light source. FIG. 6 is a graph showing the contrast when the color filter having the green pixel of the example and the comparative example is combined with the light source. FIG. 7 is a graph showing the contrast when the color filter having blue pixels of the example and the comparative example is combined with the light source. FIG. 8 is a graph showing the transmission spectra of the blue pixels of Example 1 and Comparative Example 1.

In the present invention, chromaticity is a value in CIE chromaticity coordinates.
In the present invention, (meth) acrylate represents acrylate and / or methacrylate.
In the present invention, the resin is a concept including a polymer in addition to a monomer and an oligomer.
In the present invention, the molecular weight means a weight average molecular weight which is a polystyrene equivalent value measured by gel permeation chromatography (GPC) in a THF solvent when having a molecular weight distribution, and when having no molecular weight distribution, It means the molecular weight of the compound itself.

  Hereinafter, the color filter for white light emitting diode light source according to the present invention will be described first, and then the display device will be described.

(Color filter for white light-emitting diode light source)
The color filter for a white light emitting diode light source according to the present invention is a color filter for a white light emitting diode light source having at least a red pixel, a green pixel, and a blue pixel, and the red pixel contains PR177 and PY150 as color materials, The green pixel contains PG58 and PY150 as color materials, and the blue pixel contains a triarylmethane compound as a color material.

The color filter for an LED light source according to the present invention contains the specific color material in each colored pixel of a red pixel, a green pixel, and a blue pixel, so that even when combined with an LED light source, the conventional color filter and CCFL light source Contrast equal to or greater than that obtained by combining
In the present invention, the contrast, when the luminance when the display device a combination of a color filter and a light source for the LED light source and a white display state T _on, the luminance at the time of a black display state and T _off It refers to the ratio of T _on / T _off .

FIG. 1 is a cross-sectional view schematically showing an example of a color filter for an LED light source according to the present invention.
As shown in FIG. 1, the color filter usually includes a transparent substrate 10, a red pixel 21, a green pixel 22, a blue pixel 23, and a light shielding unit 30 that are colored pixels formed on the transparent substrate 10.
The color filter for an LED light source according to the present invention includes, for example, a protective film, a transparent electrode film, an alignment film, and a columnar spacer other than the transparent substrate 10, the colored pixels 21 to 23, and the light shielding portion 30. May be.
In FIG. 1 and the subsequent drawings, for convenience of explanation, the vertical and horizontal dimension ratios and the dimension ratios between the layers and the members are exaggerated as appropriate instead of the actual dimensions.

(Transparent substrate)
The transparent substrate 10 in the color filter for an LED light source of the present invention is not particularly limited as long as it is a substrate transparent to visible light, and a transparent substrate used for a general color filter can be used. . Examples thereof include a transparent substrate having no flexibility such as quartz glass, alkali-free glass, and synthetic quartz plate, and a transparent substrate having flexibility such as a transparent resin film and an optical resin plate.
Although the thickness of the transparent substrate 10 is not specifically limited, For example, the thing of about 100 micrometers-1 mm can be used according to the use of the color filter of this invention.

(Colored pixels)
The colored pixels in the color filter for the LED light source of the present invention may include the red pixels 21, the green pixels 22, and the blue pixels 23, and any colored pixels may be used as long as each colored pixel has the color material described above. Pixels other than may be included.
Normally, the colored pixels are formed by curing the color filter resin composition of each color in the opening between the light shielding portions 30 formed on the transparent substrate 10 as shown in FIG.
Further, the arrangement of the colored pixels is not particularly limited, and for example, a general arrangement such as a stripe type, a mosaic type, a triangle type, or a four pixel arrangement type can be used. Moreover, the width | variety, area, etc. of a coloring pixel can be set arbitrarily.
The thickness of the colored pixel is appropriately controlled by adjusting the coating method, the solid content concentration, the viscosity, and the like of the color filter resin composition, but is usually preferably in the range of 1 to 5 μm.

(Red pixel)
In the color filter for an LED light source of the present invention, the red pixel contains PR177 and PY150 as color materials.
As a result of intensive studies by the present inventors, it was found that PR177, which is a red pigment, is a bluish red color and has a high contrast.
It was also found that PY150, which is a yellow pigment that adjusts red color in combination with the red pigment PR177 in a red pixel, has a high contrast.
Therefore, the contrast of the red pixel can be increased by including PR177 and PY150 having high contrast.

  In addition to the above PR177 and PY150, the red pixel may include other color materials such as PR254 and PR242 as necessary in order to adjust contrast, luminance, color, and the like as long as they do not depart from the spirit of the present invention. It may be included. For example, PR242 is a pigment having an orange color with high contrast, and may be used in combination with PR177 and PY150 in order to adjust the yellow color of a red pixel while maintaining high contrast. PR254 may be used to adjust the yellowness, and PR254 is more preferably used than PR242 from the viewpoint of plate making.

  For example, when the red pigment is only PR177, the content ratio of the color material in the red pixel is such that the content ratio of PR177 to the total mass of the color material is 60 to 70 mass% and PY150 from the viewpoint of obtaining a red pixel with high contrast. The content ratio is preferably 30 to 40% by mass.

  In addition, for example, when two types of red pigments PR177 and PR254 are included as a red pixel, from the viewpoint of obtaining a red pixel with high contrast, the content ratio of PR177 to the total mass of the colorant is 30 to 60% by mass, PR254. It is preferable that the content rate of 15-30 mass% and the content rate of PY150 are 10-45 mass%. In this case, the content of PR177 and PR254 is preferably such that the content of PR177 is equal to or greater than the content of PR254, and more preferably PR177: PR254 = 1: 1 to 3: 1.

  For example, when two types of red pigments PR177 and PR242 are included as red pigments, the content ratio of PR177 to the total mass of the colorant is 40 to 50% by mass and PR242 from the viewpoint of obtaining red pixels with high contrast. Is preferably 40 to 50% by mass, and PY150 is preferably 10 to 20% by mass. In this case, the ratio of the contents of PR177 and PR242 is preferably PR177: PR242 = 1: 1 to 1: 1.5.

  The total content of the two pigments of PR177 and PY150 with respect to the total mass of the color material in the red pixel may be adjusted as appropriate according to required performance such as contrast, brightness, and color tone. From the viewpoint of obtaining pixels, it is preferably greater than 50% by mass.

(Green pixel)
In the color filter for LED light source of the present invention, the green pixel contains PG58 and PY150 as color materials.
As a result of intensive studies by the present inventors, it was found that PY150, which is a yellow pigment that adjusts the green color in combination with PG58, which is a green pigment, has a feature that the contrast is higher than PY138 of the same yellow pigment. .
Therefore, the contrast of the green pixel can be increased by containing the green pigment PG58 and the high contrast PY150.

  In addition to the above PG58 and PY150, the green pixel includes other color materials such as PY138 as necessary in order to adjust contrast, luminance, color, and the like as long as they do not depart from the spirit of the present invention. May be.

  The content ratio of the color material in the green pixel is, for example, when the yellow pigment is only PY150, from the viewpoint of obtaining a high-contrast green pixel, the content ratio of PG58 with respect to the total mass of the color material is 60 to 70% by mass, The content ratio is preferably 30 to 40% by mass. In this case, the ratio of the contents of PG58 and PY150 is preferably PG58: PY150 = 3: 2 to 7: 3.

  For example, when two types of PY150 and PY138 are included as yellow pigments for green pixels, the content ratio of PG58 to the total mass of the colorant is 40 to 70% by mass and PY150 from the viewpoint of obtaining a green pixel with high contrast. Is preferably 5 to 40% by mass and PY138 is preferably 5 to 15% by mass. In this case, the ratio of the contents of PY150 and PY138 is preferably PY150: PY138 = 2: 1 to 4: 1.

  The total content of the two pigments PG58 and PY150 with respect to the total mass of the color material in the green pixel may be appropriately adjusted according to the required performance such as contrast, brightness, and color, but the green color with high contrast From the viewpoint of obtaining pixels, the content is preferably 90% by mass or more.

(Blue pixel)
In the color filter for LED light source of the present invention, the blue pixel contains a triarylmethane compound as a color material.
As a result of intensive studies by the present inventors, PB15: 6 and C.I. I. Pigment Violet (hereinafter simply referred to as “PV”) 23 and the like, when the particle size of the pigment is made finer than that used in the CCFL light source, causes pigment crystals to precipitate and decreases the yield in the manufacturing process. I understood that.
It was also found that the triarylmethane compound, which is a blue dye, not a pigment, can increase the contrast without the problem of crystal precipitation.
Therefore, by including a triarylmethane compound as a coloring material, the contrast of the blue pixel can be increased without any problem of crystal precipitation.

  In addition to the triarylmethane compound, the blue pixel may contain other color materials as needed in order to adjust contrast, luminance, color, and the like as long as they do not depart from the spirit of the present invention. good.

  The content of the triarylmethane compound in the blue pixel may be appropriately adjusted according to the required performance such as contrast, brightness, and color. From the viewpoint of obtaining a blue pixel with high contrast, the color material of the blue pixel The content ratio of the triarylmethane compound with respect to the total mass is preferably 90% by mass or more.

  PB15: 1, PB15: 3, PB15: 4, etc. have a lower contrast than triarylmethane compounds. The content of the pigment having such a relatively low contrast with respect to the total mass of the color material in the blue pixel may be appropriately adjusted according to required performance such as contrast, luminance, and color, but the contrast is high. From the viewpoint of obtaining a blue pixel, the content is preferably 10% by mass or less with respect to the mass of the triarylmethane compound.

In the blue pixel of the color filter for an LED light source of the present invention, the peak of transmittance of the blue pixel exists at a wavelength of 400 to 450 nm, and the maximum transmittance of the peak is 85% or more. This is preferable from the viewpoint of obtaining pixels.
In the present invention, the transmittance refers to a coating film having a thickness of 2 to 3 μm produced by uniformly dispersing a colorant at a concentration of 30% by mass using a microspectroscope OSP-SP2000 manufactured by OLYMPUS Co., Ltd. It means the transmittance in the transmission spectrum when measured.

The triarylmethane compound of the blue dye is not particularly limited, and a triarylmethane compound used in a conventionally known color filter or the like can be used.
For example, triarylmethane dyes described in JP-A-2008-304766, triphenylmethane dyes described in JP-A-2000-162429, and triphenylmethane dyes described in JP-A-11-223720 are used. Can be used.
Especially, it is preferable that the triarylmethane compound of this invention has an anilino group (PhNH-). A commercial item may be used for such a triarylmethane compound, for example, the brand name FANAL BLUE D6340 made from BASF can be used.

  The triarylmethane compound of the blue dye may be used alone or in combination of two or more.

  Hereinafter, the resin composition for a color filter that cures to form the colored pixel will be described.

(Resin composition for color filter)
The resin composition for a color filter used in the present invention is a resin composition for a color filter known in the art, and the specific color material described above according to each colored pixel of the red pixel, the green pixel, and the blue pixel is used as the pigment. It may be prepared and used so as to be included in That is, conventionally known pigment filters, binders, photoinitiators, catalysts, solvents, and other components other than the colorant may be those of conventionally known color filter resin compositions.
The resin composition for a color filter is generally composed of a dispersion containing a colorant, a dispersant, a binder and a solvent, and a clearing agent containing a photoinitiator, a curing agent, a catalyst, a binder, a solvent and the like. Hereinafter, each of these components will be described without distinguishing between the dispersion and the clearing agent.

(Coloring material)
In the present invention, the color material is a concept including a pigment and a dye.
The color filter resin composition for forming the red pixel may contain PR177 and PY150. Since other suitable conditions such as the content ratio of the pigment have been described above, description thereof is omitted here.
The color filter resin composition for forming red pixels may contain a color material other than PR177 and PY150 without departing from the spirit of the present invention. Examples of such a color material include PR254, PR242, PY139, and the like.
The color filter resin composition for forming the green pixel may contain PG58 and PY150. Since other suitable conditions such as the content ratio of the pigment have been described above, description thereof is omitted here.
The color filter resin composition for forming green pixels may contain a color material other than PG58 and PY150 without departing from the spirit of the present invention. Examples of such a color material include PY138.
The resin composition for a color filter for forming a blue pixel may contain a triarylmethane compound. Since other suitable conditions, such as the content rate of a triarylmethane compound, were mentioned above, description here is abbreviate | omitted.

(Pigment particle size)
The average primary particle size of the pigment used in the present invention is not particularly limited as long as it can produce a desired color when used as a colored pixel of a color filter. The average primary particle diameter of the pigment varies depending on the type of pigment used, but is preferably in the range of 10 to 50 nm, and more preferably in the range of 10 to 40 nm from the viewpoint of improving contrast. When the average primary particle size of the pigment is in the above range, the liquid crystal display device and the organic EL display device produced using the resin composition for a color filter of the present invention can be easily made to have high contrast and high quality.
In addition, the average particle diameter of the pigment in the color filter can be obtained by a method of directly measuring the size of primary particles from an electron micrograph. Specifically, the minor axis diameter and major axis diameter of each primary particle are measured, and the average is taken as the particle diameter of the particle. Next, for 100 particles, the volume (weight) of each particle is obtained by approximating the obtained particle size to a rectangular parallelepiped, and the volume average particle size is obtained and used as the average particle size. The same result can be obtained regardless of whether the electron microscope is a transmission type (TEM) or a scanning type (SEM).
The particle size of the pigment in the dispersion can be measured using a Nitraso Co., Ltd. Nanotrac particle size analyzer UPA-EX.

  In the resin composition for a color filter, the mass ratio (P / V) between the color material (P) and the solid content (V) other than the color material is a required optical characteristic such as contrast, brightness, and color. It is preferable that it is 0.07-0.3 from a viewpoint of platemaking property, and it is more preferable that it is 0.08-0.3.

(Dispersant)
In the color filter resin composition, a conventionally known dispersant can be used to disperse the pigment as necessary.
As such a dispersant, for example, a cationic, anionic, nonionic, amphoteric, silicone-based or fluorine-based surfactant described in Patent Document 1 can be used.
Further, for example, a polymer dispersant described in JP-A-2007-070342 is also preferably used.

  Examples of commercially available dispersants include trade name Polyflow No. manufactured by Kyoeisha Chemical Co., Ltd. 75, 90, 95, DIC Corporation product names MegaFuck F171, F172, F173, Big Chemie Japan Corporation DISPERBYK (registered trademark) 111, 130, 161, 162, 163, 164, 170, 182, 2000, 2001, trade names of Efka Co., Ltd., Efka 46, Efka 47, Zeneca Co., Ltd., trade names Solsperth 3000, 5000, 9000, 12000, 13240. 13940, 17000, 20000, 24000, 26000, 28000, and the like. Of these, DISPERBYK2000 manufactured by Big Chemie Japan Co., Ltd. is preferable.

  When the dispersant is used, the amount thereof may be appropriately adjusted. For example, the amount is preferably 20 to 100 parts by mass with respect to 100 parts by mass of the pigment.

(Binder)
The binder is a component that imparts film-forming properties and adhesion to the coated surface to the color filter resin composition.
As a binder, the alkali-soluble, thermosetting, or thermoplastic binder used for the coloring pixel of a conventionally well-known color filter can be used. As such a binder, for example, a binder described in JP 2010-2746 A is preferable.

Examples of the alkali-soluble binder include ethylene, which is obtained by polymerizing monomers such as acrylic acid, methacrylic acid, dimer of acrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, vinyl acetic acid, and acid anhydrides thereof. -Vinyl acetate copolymer, ethylene-vinyl chloride copolymer, ethylene vinyl copolymer, polystyrene, acrylonitrile-styrene copolymer, ABS resin, polymethacrylic acid resin, ethylene methacrylic acid resin, polyvinyl chloride resin, chlorination Vinyl chloride, polyvinyl alcohol, cellulose acetate propionate, cellulose acetate butyrate, nylon 6, nylon 66, nylon 12, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyvinyl acetal, polyether ether Tons, polyether sulfone, polyphenylene sulfide, polyarylate, polyvinyl butyral, epoxy resins, phenoxy resins, polyimide resins, polyamide-imide resins, polyamic acid resins, polyether imide resins, phenolic resins, urea resins, and the like.
In addition, polymerizable monomers methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, sec-butyl (meth) acrylate, isobutyl (meth) acrylate, tert -Butyl (meth) acrylate, n-pentyl (meth) acrylate, n-hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, n-octyl (meth) acrylate, n-decyl (meth) acrylate, 2-hydroxy Examples include ethyl methacrylate, benzyl methacrylate, styrene, α-methylstyrene, N-vinyl-2-pyrrolidone, glycidyl (meth) acrylate, and the like.
In the present invention, a commercially available binder can also be used. preferable.
The molecular weight of the alkali-soluble binder is preferably 5,000 to 50,000.

Examples of the thermosetting binder include a polymer composed of a structural unit represented by formula (1) and a structural unit represented by formula (2) described in JP 2010-2746 A (binder epoxy resin). ) Is preferred.
The molecular weight of the thermosetting binder is preferably 5,000 to 100,000.

  In the present invention, the alkali-soluble binder or the thermosetting binder may be used alone or in combination of two or more.

(Polymerization initiator)
When using an alkali-soluble or thermosetting binder as the binder for the color filter resin composition, it is preferable to use a polymerization initiator from the viewpoint of promoting the curing reaction.
The polymerization initiator may be appropriately selected and used depending on the type of curable group possessed by the binder. For example, a photopolymerization initiator and a thermal polymerization initiator described in Patent Document 1 and Japanese Patent Application Laid-Open No. 2007-70342 can be used.
As the photopolymerization initiator, for example, 2,2′-azobisisobutyronitrile (AIBN), 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one and the like are preferable. .

  Examples of commercially available photopolymerization initiators include trade names Irgacure 184, 369, 651, 819, and 907 manufactured by Ciba Specialty Chemicals Co., Ltd., and Darocur series manufactured by Merck. Can be mentioned.

  When a polymerization initiator is used, the amount thereof may be adjusted as appropriate. For example, the amount is preferably 1 to 20% by mass relative to the total mass of the total solid content of the color filter resin composition.

(Curing agent)
The thermosetting binder is usually combined with a curing agent. As a hardening | curing agent, what is used in combination with a conventionally well-known thermosetting binder can be used.
As the curing agent, for example, a curing agent described in JP 2010-2746 A is preferable.
A hardening | curing agent may be used individually by 1 type, and may be used in combination of 2 or more type.
When the curing agent is used, the blending amount is usually in the range of about 1 to 100 parts by mass, preferably 5 to 50 parts by mass, per 100 parts by mass of the component having an epoxy group.

(catalyst)
When using a thermosetting binder, in order to improve the hardness and heat resistance of a colored pixel, you may use the catalyst which can accelerate | stimulate the thermosetting reaction between an acid and an epoxy. As such a catalyst, a thermal latent catalyst that exhibits activity during heat curing can be used.
The heat-latent catalyst exhibits catalytic activity when heated, accelerates the curing reaction and gives good properties to the cured product, and is added as necessary. The thermal latent catalyst is preferably one that exhibits acid catalytic activity at a temperature of 60 ° C. or higher. As such, a compound obtained by neutralizing a protonic acid with a Lewis base, a compound obtained by neutralizing a Lewis acid with a Lewis base, Lewis Examples thereof include a mixture of an acid and a trialkyl phosphate, sulfonic acid esters, onium compounds, and the like, and various compounds described in JP-A-4-218561 can be used.
The blending amount in the case of using the heat latent catalyst is usually about 0.01 to 10.0 parts by mass with respect to 100 parts by mass in total of the thermosetting binder and the curing agent.

(solvent)
In order to adjust the viscosity, pigment dispersibility, and dispersion stability over time of the resin composition for a color filter, a solvent can be used as necessary.
Examples of the solvent include alcohols such as isopropanol described in Patent Document 1, ketones such as acetone and methyl ethyl ketone, aromatic hydrocarbons such as toluene and xylene, diethylene glycol dimethyl ether (also known as bis (2-methoxyethyl) ether). Glycol ethers such as propylene glycol monomethyl ether (also known as 1-methoxypropan-2-ol) and ethyl acetate, propylene glycol monomethyl ether acetate (also known as 2-methoxy-1-methylethyl acetate), propylene glycol monoethyl ether acetate ( Also known as 2-ethoxy-1-methylethyl acetate), 3-methoxybutyl acetate (also known as 3-methoxybutyl acetate) and butyl carbitol acetate (also known as 2- (2-butoxyethoxy acetate) Ethyl) acetate esters such as and the like.
Of these, diethylene glycol dimethyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate and 3-methoxybutyl acetate are preferred.

  When the solvent is used, the amount thereof may be adjusted as appropriate. For example, the amount is preferably 10 to 90% by mass with respect to the total mass of the color filter resin composition.

(Other ingredients)
The color filter resin composition may contain various other components as required without departing from the spirit of the present invention.
For example, a pigment derivative may be included as long as the effects of the present invention are not impaired. Such a pigment derivative is a compound having a role of imparting a functional group to the pigment skeleton and adding various functions to the pigment. When a pigment derivative is added to the pigment at the time of pigment dispersion, the pigment-like skeleton of the pigment derivative is adsorbed or bonded to the surface of the pigment, whereby the surface of the pigment becomes polar, so that the affinity between the dispersant and the pigment is increased. It is considered that the dispersibility and dispersion stability can be secured. Examples of the pigment derivative include a derivative having a sulfonic acid group, a carboxyl group, a sulfonamide group, a phthalimidomethyl group, or the like in the above blue pigment or yellow pigment.

In addition to the pigment derivative, for example, a polymerization terminator, a chain transfer agent, a leveling agent, a plasticizer, a surfactant, an antifoaming agent, a silane coupling agent, an ultraviolet absorber, an adhesion promoter, and the like can be used.
Among these, surfactants that can be used include, for example, polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene nonyl phenyl ether, polyethylene Examples include glycol dilaurate, polyethylene glycol distearate, sorbitan fatty acid esters, fatty acid-modified polyesters, and tertiary amine-modified polyurethanes. In addition, a fluorosurfactant can also be used.
Furthermore, examples of the plasticizer include dibutyl phthalate, dioctyl phthalate, and tricresyl. Examples of the antifoaming agent and leveling agent include silicon-based, fluorine-based, and acrylic compounds.

(Preparation of resin composition for color filter)
The color filter resin composition may be prepared by uniformly dissolving or dispersing a coloring material, a binder, and other components such as a pigment dispersant and a polymerization initiator that are used as desired in a solvent. There is no particular limitation, and it can be prepared by mixing using a known mixing means.
As a method for preparing a resin composition for a color filter, for example, as described in JP 2010-243604 A, a method in which the desired component is mixed in a solvent using a dispersing machine such as a ball mill is used. be able to.

(Method for forming colored pixels)
The method for forming the colored pixel is not particularly limited, and may be formed by using the color filter resin composition by, for example, a pixel forming method such as a conventionally known photolithography method described in Patent Document 1.
For example, when the color filter resin composition includes a photocurable binder, the color filter resin composition is applied to the application target surface (region) by an inkjet method or a spin coating method, and then is applied by ultraviolet rays through a photomask. After exposure (pattern exposure), the unexposed portion can be formed by washing (developing) with a solvent, an alkaline aqueous solution such as an aqueous potassium hydroxide solution, or the like. After applying the resin composition, heat treatment (pre-baking) may be performed before exposure. Further, heat treatment may be performed after development.

(Shading part)
The light shielding unit 30 is provided so as to surround the colored pixels 21 to 23 and the outside of the pixel formation region in order to improve the contrast of the display image. What is used for the conventionally well-known color filter can be employ | adopted for a light-shielding part.
The light shielding unit 30 may be a metal thin film such as chromium by sputtering, vacuum deposition, or the like. In addition, the light shielding part 30 may be a resin layer in which light shielding particles such as carbon fine particles, metal oxides, inorganic pigments, and organic pigments are contained in a binder.
The thickness of the light shielding part is about 100 to 400 nm in the case of a metal thin film, and about 0.5 to 2.5 μm in the case of a resin layer containing light shielding particles.

FIG. 2 is a cross-sectional view schematically showing another example of the color filter for LED light source according to the present invention.
The LED light source color filter of FIG. 2 includes a protective film 40 formed to cover the colored pixels 21 to 23 in addition to the LED light source color filter 1 of FIG. Further, a transparent electrode film 50 for driving liquid crystal is formed on the protective film 40. An alignment film 60 is formed on the transparent electrode film 50.
The columnar spacer 70 has a shape of a convex spacer, and is formed at a plurality of predetermined positions on the transparent electrode film 50 in accordance with a region (non-display region) where the light shielding portion 30 is formed.
Hereinafter, the protective film, the transparent electrode film, the alignment film, and the spacer will be described.

(Protective film)
The protective film 40 is provided to flatten the surface of the color filter and prevent the components contained in the colored pixels 21 to 23 from eluting into other layers. The protective film 40 is formed by coloring a known negative-type photocurable resin composition or thermosetting resin composition having known transparency by a method such as spin coater, roll coater, spray, printing, and the like. It can form by apply | coating so that the light-shielding part 30 may be covered, and hardening with light and / or a heat | fever.
The thickness of the protective film 40 can be set in consideration of the light transmittance of the material used, the surface state of the color filter, and the like, and can be set, for example, in the range of 0.1 to 2.0 μm.

(Transparent electrode film)
The transparent electrode film 50 can be formed using indium tin oxide (ITO), zinc oxide (ZnO), tin oxide (SnO), or an alloy thereof. The thickness of the transparent electrode film can be about 20 to 500 nm, preferably about 80 to 300 nm.

(Alignment film)
The alignment film 60 can be formed by applying a coating solution containing a resin such as a polyimide resin by a known method such as spin coating, drying, curing with heat or light as necessary, and then rubbing. .

(Spacer)
A plurality of spacers are provided in a non-display area on the substrate in order to maintain a cell gap when the color filter is bonded to a liquid crystal driving side substrate such as a TFT array substrate. The shape and dimensions of the spacer are not particularly limited as long as the spacer can be selectively provided in a non-display region on the substrate and a predetermined cell gap can be maintained over the entire substrate.
When the columnar spacer 70 as shown in the figure is formed as the spacer, it has a constant height in the range of about 2 μm to 10 μm, and the protruding height (pattern thickness) is the thickness required for the liquid crystal layer, etc. Can be set as appropriate. The thickness of the columnar spacer 70 can be appropriately set within a range of about 5 to 20 μm. The formation density (density) of the columnar spacers 70 can be appropriately set in consideration of the thickness unevenness of the liquid crystal layer, the aperture ratio, the shape and material of the columnar spacers, for example, red, green and blue Necessary and sufficient spacer functions are expressed at a ratio of one for each set of colored pixels. The shape of such a columnar spacer is not particularly limited, and may be, for example, a columnar shape, a prismatic shape, a truncated cone shape, or a truncated pyramid shape.

  The spacer is applied, for example, directly on the transparent substrate by a method such as a spin coater, roll coater, spray, or printing, or through another layer such as a transparent electrode film, by applying a coating liquid of the curable resin composition, Dry to form a resin layer.

As an LED light source used in combination with the color filter according to the present invention, an LED light source (hereinafter, referred to as “RG phosphor”) that generates white light by combining a blue LED and a red / green phosphor (hereinafter also referred to as “RG phosphor”). , "LED (B-RG)") and LED that generates white light by combining a blue LED and an yttrium aluminum garnet phosphor (hereinafter also referred to as "YAG phosphor"). A light source (hereinafter sometimes referred to as “LED (B-YAG)”) is preferable.
Compared with the case where blue light, red LED, and green LED are combined to generate white light, the combination of the blue LED and RG phosphor or YAG phosphor generates white light. It can be inexpensive and downsized.

The RG phosphor may be any phosphor that absorbs blue light and emits red fluorescence and green fluorescence. For example, a conventionally known RG phosphor described in Patent Document 1 or Japanese Patent Application Laid-Open No. 2003-141905 is used. Can be used.
The YAG phosphor may be any phosphor that absorbs blue light and emits yellow fluorescence and green fluorescence. For example, a conventionally known YAG phosphor described in Patent Document 1 or Japanese Patent Application Laid-Open No. 2008-218486 is used. Can be used.

A display device according to the present invention includes a white light emitting diode light source and the color filter for the white light emitting diode light source.
Since the display device according to the present invention includes the color filter, even when combined with an LED light source, the display device has a contrast equivalent to or higher than that when combined with a CCFL light source, and is excellent in display quality.

Examples of such a display device include a liquid crystal display device and an organic electroluminescent (organic EL) display device.
Hereinafter, a liquid crystal display device and an organic EL display device will be described.

FIG. 3 is a cross-sectional view schematically showing an example of a liquid crystal display device as a display device of the present invention.
In the liquid crystal display device, for example, a gap portion 90 of about 1 to 10 μm is provided by facing the color filter of the present invention and an electrode substrate 80 such as a TFT substrate, and the liquid crystal compound L is filled in the gap portion 90. , And the periphery thereof is sealed with a sealing material 100.
An alignment film 60 is provided on the inner surface side of the electrode substrate 80 facing the color filter 1. Usually, an LED light source is disposed at a position opposite to the colored pixels 21 to 23 of the color filter 1 through a liquid crystal layer of a liquid crystal compound.

A driving method of the liquid crystal display device is not particularly limited, and a driving method used in a general liquid crystal display device can be employed. Examples of such a drive method include a TN method, an IPS method, an OCB method, and an MVA method. In the present invention, any of these methods can be preferably used.
The electrode substrate 80 facing the color filter 1 can be appropriately selected and used according to the driving method of the liquid crystal display device.
Furthermore, as the liquid crystal compound L filled in the gap portion 90, various liquid crystals having different dielectric anisotropy and mixtures thereof can be used according to the driving method of the liquid crystal display device of the present invention.

  The liquid crystal display device may include other optical members such as a light guide plate, a diffusion plate, and a prism sheet in addition to the above-described members.

(Organic EL display device)
The organic EL display device includes the above-described color filter of the present invention and an organic light emitter serving as an LED light source.
FIG. 4 is a cross-sectional view schematically showing an example of an organic EL display device as a display device of the present invention. The organic EL display device 3 includes a color filter 1 and an organic light emitter 120 (LED light source 110).
An organic protective layer 41 and an inorganic oxide film 130 may be provided between the color filter 1 and the organic light emitter 120.

As a method for laminating the organic light emitter 120, for example, the transparent anode 140, the hole injection layer 150, the hole transport layer 160, the light emitting layer 170, the electron injection layer 180, and the cathode 190 are sequentially formed on the upper surface of the color filter. Examples thereof include a method and a method in which the organic light-emitting body 120 formed on another substrate is bonded to the inorganic oxide film 130. As the transparent anode 140, the hole injection layer 150, the hole transport layer 160, the light emitting layer 170, the electron injection layer 180, the cathode 190, and other configurations in the organic light emitting body 120, known configurations can be appropriately used. The organic light emitting display device 3 thus manufactured can be applied to, for example, a passive drive type organic EL display device or an active drive type organic EL display device.
Note that the organic EL display device of the present invention is not limited to the configuration shown in FIG. 4, and can generally have a known configuration as an organic EL display device using a color filter.

  As a method for manufacturing a display device according to the present invention, any method may be used as long as the above-described components are stacked with high accuracy. Depending on the type of the display device, a general liquid crystal display device or an organic EL display device may be used. Manufacturing methods can be used.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and this embodiment 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 more specifically with reference to examples. These descriptions do not limit the present invention.

The abbreviations of the compounds used in the synthesis examples are as shown in parentheses.
Methyl methacrylate (MMA)
Acrylic acid (AA)
2-hydroxyethyl methacrylate (HEMA)
Diethylene glycol dimethyl ether (DMDG)
2,2'-azobisisobutyronitrile (AIBN)
Glycidyl methacrylate (GMA)

(Synthesis Example 1)
In a polymerization tank, 63 parts by mass of MMA, 12 parts by mass of AA, 6 parts by mass of HEMA and 88 parts by mass of DMDG were charged, stirred and dissolved, and then 7 parts by mass of AIBN 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. 7 parts by mass of GMA, 0.4 parts by mass of triethylamine and 0.2 parts by mass of hydroquinone were further added to the obtained solution, and the mixture was stirred at 100 ° C. for 5 hours to obtain a copolymer resin solution (solid content 50%). It was.

The following materials were mixed and stirred at room temperature to obtain a curable resin composition as a binder.
The above copolymer resin solution (solid content 50%): 16 parts by mass Dipentaerythritol pentaacrylate (trade name SR399 manufactured by Sartomer): 24 parts by mass Orthocresol novolak type epoxy resin (Product made by Yuka Shell Epoxy Co., Ltd.) Name Epicoat 180S70): 4 parts by mass 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one (trade name Irgacure 907 manufactured by Ciba Specialty Chemicals Co., Ltd.): 4 parts by mass Parts DMDG: 52 parts by mass

(Preparation of red pixel color filter resin compositions 1 to 6)
The following materials were mixed and stirred at room temperature to prepare resin compositions 1 to 6 for red pixel color filters.

(Resin composition 1 for color filter for red pixel)
PR177 (average primary particle size 50 nm): 39 parts by mass PR254 (average primary particle size 50 nm): 30 parts by mass PY150 (average primary particle size 50 nm): 31 parts by mass The curable resin composition (binder): 60 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd. trade name DISPERBYK2000): 100 parts by mass 3-methoxybutyl acetate (solvent): 800 parts by mass

(Resin Composition 2 for Color Filters for Red Pixels)
PR177 (average primary particle size 50 nm): 41 parts by mass PR242 (average primary particle size 50 nm): 47 parts by mass PY150 (average primary particle size 50 nm): 12 parts by mass The curable resin composition (binder): 60 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd. trade name DISPERBYK2000): 100 parts by mass 3-methoxybutyl acetate (solvent): 800 parts by mass

(Resin composition 3 for red pixel color filter)
PR177 (average primary particle size 50 nm): 47 parts by mass PR254 (average primary particle size 50 nm): 17 parts by mass PY150 (average primary particle size 50 nm): 36 parts by mass The curable resin composition (binder): 60 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd. trade name DISPERBYK2000): 100 parts by mass 3-methoxybutyl acetate (solvent): 800 parts by mass

(Resin Composition 4 for Color Filter for Red Pixel)
PR177 (average primary particle size 50 nm): 19 parts by mass PR254 (average primary particle size 50 nm): 75 parts by mass PY150 (average primary particle size 50 nm): 6 parts by mass The curable resin composition (binder): 60 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd. trade name DISPERBYK2000): 100 parts by mass 3-methoxybutyl acetate (solvent): 800 parts by mass

(Resin composition 5 for red pixel color filter)
PR177 (average primary particle size 50 nm): 26 parts by mass PR254 (average primary particle size 50 nm): 60 parts by mass PY150 (average primary particle size 50 nm): 14 parts by mass The curable resin composition (binder): 60 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd. trade name DISPERBYK2000): 100 parts by mass 3-methoxybutyl acetate (solvent): 800 parts by mass

(Resin composition 6 for red pixel color filter)
PR177 (average primary particle size 50 nm): 32 parts by mass PR254 (average primary particle size 50 nm): 50 parts by mass PY150 (average primary particle size 50 nm): 18 parts by mass The curable resin composition (binder): 60 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd. trade name DISPERBYK2000): 100 parts by mass 3-methoxybutyl acetate (solvent): 800 parts by mass

(Preparation of green pixel color filter resin compositions 1 to 5)
The following materials were mixed and stirred at room temperature to prepare green pixel color filter resin compositions 1 to 5.

(Resin Composition 1 for Color Filter for Green Pixel)
PG58 (average primary particle size 50 nm): 63 parts by mass PY150 (average primary particle size 50 nm): 27 parts by mass PY138 (average primary particle size 50 nm): 10 parts by mass The curable resin composition (binder): 75 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd., trade name DISPERBYK2000): 125 parts by mass 3-methoxybutyl acetate (solvent): 900 parts by mass

(Resin Composition 2 for Color Filter for Green Pixel)
PG58 (average primary particle size 50 nm): 65 parts by mass PY150 (average primary particle size 50 nm): 35 parts by mass The curable resin composition (binder): 75 parts by mass Polymer dispersant (Bic Chemie Japan Co., Ltd.) Product name DISPERBYK2000): 125 parts by mass 3-methoxybutyl acetate (solvent): 900 parts by mass

(Resin Composition 3 for Color Filter for Green Pixel)
PG58 (average primary particle size 50 nm): 56 parts by mass PY138 (average primary particle size 50 nm): 44 parts by mass The above curable resin composition (binder): 75 parts by mass Polymer dispersant (Bic Chemie Japan Co., Ltd.) Product name DISPERBYK2000): 125 parts by mass 3-methoxybutyl acetate (solvent): 900 parts by mass

(Resin Composition 4 for Color Filter for Green Pixel)
PG58 (average primary particle size 50 nm): 57 parts by mass PY150 (average primary particle size 50 nm): 8 parts by mass PY138 (average primary particle size 50 nm): 35 parts by mass The curable resin composition (binder): 75 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd., trade name DISPERBYK2000): 125 parts by mass 3-methoxybutyl acetate (solvent): 900 parts by mass

(Resin Composition 5 for Color Filter for Green Pixel)
PG58 (average primary particle size 50 nm): 64.8 parts by mass PY150 (average primary particle size 50 nm): 17.6 parts by mass PY138 (average primary particle size 50 nm): 17.6 parts by mass The above curable resin composition Product (binder): 75 parts by mass Polymer dispersant (Brand Chemy Japan Co., Ltd., trade name DISPERBYK2000): 125 parts by mass 3-methoxybutyl acetate (solvent): 900 parts by mass

(Preparation of resin compositions 1 to 3 for a color filter for blue pixels)
The following materials were mixed and stirred at room temperature to prepare resin compositions 1 to 3 for a blue pixel color filter.

(Resin Composition 1 for Color Filters for Blue Pixels)
Triarylmethane compound (trade name FANAL BLUE D6340 manufactured by BASF): 100 parts by mass The curable resin composition (binder): 130 parts by mass 3-methoxybutyl acetate (solvent): 900 parts by mass

(Resin Composition 2 for Blue Pixel Color Filter)
PB15: 6 (average primary particle size 50 nm): 90 parts by mass PV23 (average primary particle size 50 nm): 10 parts by mass The curable resin composition (binder): 300 parts by mass Polymer dispersant (BIC Chemie Japan ( Product name DISPERBYK2000): 500 parts by mass 3-methoxybutyl acetate (solvent): 2500 parts by mass

(Resin Composition 3 for Blue Pixel Color Filter)
PB15: 6 (average primary particle size 50 nm): 96 parts by mass PV23 (average primary particle size 50 nm): 4 parts by mass The curable resin composition (binder): 300 parts by mass 3-methoxybutyl acetate (solvent): 2500 parts by mass

  Table 1 shows the contents of the color materials of the color filter resin composition for each color pixel.

Example 1
Spin the resin composition 1 for the color filter for the three colors of red, green, and blue prepared above onto a glass substrate (NH Techno Glass Co., Ltd., “NA35”) having a thickness of 0.7 mm. It was applied using a coater. Then, it heat-dried for 3 minutes on an 80 degreeC hotplate. Red, green, and blue colored pixels were obtained by irradiating 60 mJ / cm ² of ultraviolet rays using an ultra-high pressure mercury lamp and post-baking in a clean oven at 230 ° C. for 30 minutes.
The thickness of the colored pixel after curing is as follows: the target chromaticity x = 0.655 and y = 0.338 for the red pixel, the target chromaticity x = 0.296 and y = 0.590 for the green pixel, The target chromaticity was adjusted to x = 0.139 and y = 0.110 (Lihgt C).

(Example 2)
In Example 1, red and green colored pixels were obtained in the same manner as in Example 1 except that only red pixels and green pixels were formed using the resin composition shown in Table 1.

(Example 3)
In Example 1, a red pixel was obtained in the same manner as in Example 1 except that only the red pixel was formed using the resin composition shown in Table 1.

(Comparative Example 1)
In Example 1, a color filter having red, green, and blue colored pixels was obtained in the same manner as in Example 1 except that each colored pixel was formed using the resin composition shown in Table 1.

(Comparative Example 1)
In Example 1, red, green and blue colored pixels were obtained in the same manner as in Example 1 except that each colored pixel was formed using the resin composition shown in Table 1.

(Comparative Example 2)
In Example 1, red, green and blue colored pixels were obtained in the same manner as in Example 1 except that each colored pixel was formed using the resin composition shown in Table 1.

(Comparative Example 3)
In Example 1, red and green colored pixels were obtained in the same manner as in Example 1 except that only red pixels and green pixels were formed using the resin composition shown in Table 1.

  When the color filter having each colored pixel obtained in the above-mentioned examples and comparative examples and the LED (B-YAG) are combined, the color filter having each colored pixel obtained in the above-mentioned comparative example and the CCFL light source are combined. In this case, each chromaticity (x, y) and contrast were measured using a microspectrophotometer, trade name OSP-SP200 manufactured by Olympus Corporation. The results are shown in Table 2, and the contrast values of the colored pixels are graphed in FIGS. Moreover, about the blue pixel of Example 1 and the comparative example 1, the transmission spectrum measured using OLYMPUS Co., Ltd. microspectroscope OSP-SP2000 is shown in FIG.

From Table 2 and FIG. 5, the color filter having the red pixel of Comparative Example 1 has a contrast of 4376 when combined with the LED (B-YAG), compared with 4376 when combined with the CCFL light source. It decreased to 3463.
On the other hand, in the color filter having the red pixel of Example 1, the contrast is 6542 even when combined with the LED (B-YAG), and the color filter having the red pixel of Comparative Example 1 and the CCFL light source are combined. The contrast (4376) was improved.
From Table 2 and FIGS. 5 to 7, the color filter and LED (B-YAG) of the example were also compared with the other examples and comparative examples, rather than the contrast value when the color filter of the comparative example and the CCFL light source were combined. Contrast was higher when combined with.

DESCRIPTION OF SYMBOLS 1 Color filter for LED light source 2 Liquid crystal display device 3 Organic EL display device 10 Transparent substrate 21 Red pixel 22 Green pixel 23 Blue pixel 30 Light-shielding part 40 Protective film 41 Organic protective film 50 Transparent electrode film 60 Alignment film 70 Spacer 80 Electrode substrate 90 Gaps (Liquid Crystal Compound L)
DESCRIPTION OF SYMBOLS 100 Sealing material 110 LED light source 120 Organic light-emitting body 130 Inorganic oxide film 140 Transparent anode 150 Hole injection layer 160 Hole transport layer 170 Light emitting layer 180 Electron injection layer 190 Cathode

Claims (8)

A white light emitting diode light source color filter having at least a red pixel, a green pixel and a blue pixel,
The red pixel has C.I. I. Pigment red 177 and C.I. I. Pigment Yellow 150,
The green pixel has C.I. I. Pigment green 58 and C.I. I. Pigment Yellow 150,
The color filter for a white light-emitting diode light source, wherein the blue pixel contains a triarylmethane compound as a color material. The red pixel further includes C.I. I. Pigment Red 254 and C.I. relative to the total mass of the color material of the red pixel. I. The content ratio of Pigment Red 177 is C.I. I. It is more than the content ratio of pigment red 254,
The green pixel further includes C.I. I. Pigment Yellow 138 and C.I. relative to the total mass of the color material of the green pixel. I. Pigment Yellow 150 has a content ratio of C.I. I. The white light-emitting diode light source color filter according to claim 1, wherein the content is higher than the content ratio of Pigment Yellow 138.   The C.I. relative to the total mass of the color material of the red pixel. I. Pigment Red 177 is 30 to 60% by mass, and the C.I. I. Pigment red 254 is contained in an amount of 15 to 30% by mass; I. The white light-emitting diode light source color filter according to claim 2, wherein the content ratio of Pigment Yellow 150 is 10 to 45 mass%.   C. with respect to the total mass of the color materials of the green pixels. I. Pigment Green 58 is 40 to 70% by mass, C.I. I. Pigment Yellow 150 is 5 to 40% by mass, C.I. I. The white light-emitting diode light source color filter according to claim 2 or 3, wherein the content ratio of Pigment Yellow 138 is 5 to 15 mass%.   The peak of transmittance of the blue pixel is present at a wavelength of 400 to 450 nm, and the maximum transmittance of the peak is 85% or more, according to any one of claims 1 to 4, Color filter for white light emitting diode light source.   6. The color for a white light emitting diode light source according to claim 1, wherein the white light emitting diode light source is a light source that is a combination of a blue light emitting diode and a yttrium aluminum garnet phosphor. filter.   The color filter for a white light emitting diode light source according to any one of claims 1 to 5, wherein the white light emitting diode light source is a light source in which a blue light emitting diode and a red / green phosphor are combined.   A display device comprising: a white light-emitting diode light source; and the white light-emitting diode light source color filter according to claim 1.