JP5671991B2 - Color filter for white light emitting diode light source and display device - Google Patents

Description

  The present invention relates to a color filter used in a liquid crystal display device or an organic EL display device including an LED light source, 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 a CCFL light source and an LED light source, when combining a conventional color filter with these light sources, when combined with an LED light source, compared with combining with a CCFL light source, As shown in FIG. 8, the color of the blue pixel, in which the chromaticity coordinates of the red pixel are shifted to the yellow side and it is difficult to display deep red, the chromaticity coordinates of the green pixel is shifted to the yellow side and dark green is difficult to display. It has been found that the display quality deteriorates due to a shift in the color reproduction range such as the degree coordinate shifts to the red side and it is difficult to display deep blue.

  The present invention has been made in order to solve the above-described problems. Even when combined with an LED light source, the color filter has a display quality equivalent to that when combined with a CCFL light source, and a display including the color filter and the LED light source. An object is to provide an apparatus.

  As a result of intensive studies by the present inventors, it has been found that by using a specific pigment in a specific blending ratio, a color filter having a display quality equivalent to that when combined with a CCFL light source can be obtained even when combined with an LED light source. The present invention has been completed.

That is, the color filter according to the present invention is a white light-emitting diode light source color filter having at least a red pixel, a green pixel, and a blue pixel, and the red pixel is a C.I. I. Pigment red 177 and C.I. I. Pigment red 254 , and C.I. I. Pigment Yellow 150 or not , 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. More than the content ratio of Pigment Red 254, the red pixel has C.I. I. When pigment yellow 150 is contained, C.I. relative to the total mass of the color material of the red pixel. I. Pigment Yellow 150 is 10% by mass or less, and the green pixel is a C.I. I. Pigment Green 58 and C.I. I. Pigment yellow 138 and / or C.I. I. Pigment Yellow 150, the total content of the yellow pigment with respect to the total mass of the color material of the green pixel is 5 to 25% by mass, the blue pixel contains a phthalocyanine blue pigment, and the blue color the content of the phthalocyanine blue pigment to the total weight of the colorant pixels Ri der least 90 mass%, the light source white light emitting diode light source, a combination of a blue light emitting diode and a red-green phosphor, and the blue emission It is at least one selected from light sources in which a diode and a yttrium / aluminum / garnet phosphor are combined .

In the red pixel, the C.I. I. By increasing the content ratio of Pigment Red (hereinafter, simply referred to as “PR”) 177 more than the content ratio of PR254, the display quality of red pixels is improved.
In the green pixel, C.I. I. Pigment Green (hereinafter, simply referred to as “PG”) 58, and C.I. I. Pigment Yellow (hereinafter, simply referred to as “PY”) 138 and / or PY150, and the total content of the yellow pigment to the total mass of the color material of the green pixel is 5 to 25 mass%. As a result, the display quality of the green pixel is improved.
When the blue pixel contains a phthalocyanine blue pigment and the content ratio of the phthalocyanine blue pigment to the total mass of the color material of the blue pixel is 90% by mass or more, the display quality of the blue pixel is improved.
As a result, even when the color filter according to the present invention is combined with an LED light source, display quality equivalent to that when combined with a CCFL light source can be obtained.

  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 contained in an amount of 50 to 70% by mass; I. Pigment red 254 is contained in an amount of 20 to 40% by mass; I. It is preferable that the content rate of the pigment yellow 150 is 10 mass% or less.

  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 75 to 95% by mass; I. Pigment yellow 138 and C.I. I. The total content of CI Pigment Yellow 150 is preferably 5 to 25% by mass.

  In the color filter for a white light emitting diode light source according to the present invention, the phthalocyanine blue pigment is C.I. I. Pigment blue 15: 1, C.I. I. Pigment blue 15: 3, C.I. I. Pigment blue 15: 4, C.I. I. It is preferable to include one or more pigments selected from the group consisting of CI Pigment Blue 15: 6 and zinc phthalocyanine pigment.

  The color filter for a white light emitting diode light source according to the present invention has a good display quality even when the white light emitting diode light source is a light source that is a combination of a blue light emitting diode and an yttrium / aluminum / garnet 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 when combined with an LED light source, the color filter for an LED light source according to the present invention has the same display quality as when combined with a CCFL light source.
Since the display device according to the present invention includes the color filter, the display device is excellent in display quality even when combined with an LED light source.

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 chromaticity coordinates in the combination of the color filter and LED (B-YAG) of the example and comparative example in the red pixel and the chromaticity coordinates in the CCFL light source. FIG. 6 is a graph showing chromaticity coordinates in the combination of the color filter and LED (B-YAG) of the example and comparative example in the green pixel and the chromaticity coordinates in the CCFL light source. FIG. 7 is a graph showing chromaticity coordinates in the combination of the color filter and LED (B-YAG) of the example and comparative example in the blue pixel and the chromaticity coordinates in the CCFL light source. FIG. 8 is a diagram showing changes in chromaticity coordinates when the light source is changed from the CCFL light source to the LED light source in the conventional color filter.

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, PR254 and PY150 as color materials. The content ratio of PR177 with respect to the total mass of the color material of the red pixel is larger than the content ratio of PR254, the content ratio of PY150 with respect to the total mass of the color material of the red pixel is 10% by mass or less, and the green color The pixel contains PG58 as a green pigment and PY138 and / or PY150 as a yellow pigment, and the total content ratio of the yellow pigment to the total mass of the color material of the green pixel is 5 to 25% by mass. The blue pixel contains a phthalocyanine-based blue pigment, and is based on the total mass of the color material of the blue pixel. The content of the phthalocyanine blue pigment is characterized in that 90 mass% or more.

The color filter for a white light emitting diode light source according to the present invention contains the specific pigment in a specific ratio in the red pixel, the green pixel, and the blue pixel, so that it can be combined with an LED light source or a CCFL light source. Has equivalent display quality.
In the present invention, chromaticity coordinates are used as a display quality evaluation method. For example, the display quality is evaluated based on the degree of deviation of the chromaticity coordinates when the LED light source and the color filter are combined with respect to the chromaticity coordinates when the CCFL light source and the conventional color filter are combined. The smaller the deviation, the smaller the color reproduction range deviation, meaning that deep red, dark green, and deep blue are more easily displayed even when combined with an LED light source, as with a CCFL light source. To do. More specifically, the display quality is evaluated based on the amount of deviation from this chromaticity coordinate, with x = 0.652 and y = 0.327 as the chromaticity coordinate of the red pixel. Similarly, for a green pixel, x = 0.313 and y = 0.607 are used as references, and for a blue pixel, x = 0.153 and y = 0.062 are used as references.

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.
In addition to the transparent substrate 10, the colored pixels 21 to 23, and the light shielding part 30, the color filter for LED light source of the present invention includes, for example, a protective film, a transparent electrode film, an alignment film, a columnar spacer, etc. as shown in FIG. May be formed.
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 LED light source of the present invention is not particularly limited as long as it is a base material 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 may have the above-described pigment mixing ratio in each colored pixel. Pixels other than the colored pixels 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 LED light source of the present invention, the red pixel contains PR177, PR254, and PY150 as the color material, and the content ratio of PR177 to the total mass of the color material of the red pixel is larger than the content ratio of PR254.
As a result of intensive studies by the present inventors, the red pigment PR177 has a characteristic that it is bluish red, and the red pigment PR PR254 has a characteristic that it is a yellowish red. It turns out to have.
In the red pixel of the conventional color filter, when combined with the LCD light source, the chromaticity coordinates are shifted to the yellow side as compared with the case of combining with the CCFL light source. Therefore, in the color filter of the present invention, the content ratio of PY150, which is the yellow pigment that most affects the yellowness of the red pixel, is 10% by mass or less with respect to the total mass of the color material of the red pixel. Further, among the red pigments, the content ratio of PR177 is set higher than that of PR254, which is a yellowish red pigment.
As a result, in a red pixel, even when combined with an LED light source, a display quality equivalent to that when combined with a CCFL light source can be obtained.

  In addition to the PR177, PR254, and PY150, the red pixel includes other color materials as needed to adjust contrast, luminance, color, and the like as needed without departing from the spirit of the present invention. Also good. For example, a color material such as PR242 may be used in combination with PR177, PR254, and PY150.

  The ratio of the content of PR177 and PR254 in the red pixel may be appropriately adjusted according to the required performance such as contrast, luminance, and color. From the viewpoint of obtaining a red pixel with high display quality, PR177: PR254 = It is preferable that it is 55: 45-70: 30.

  The content of PR177, PR254, and PY150 in the red pixel may be appropriately adjusted according to required performance such as contrast, brightness, and color. From the viewpoint of obtaining a red pixel with high display quality, the color of the red pixel It is preferable that the content ratio of PR177 with respect to the total mass of the material is 50 to 70 mass%, the content ratio of PR254 is 20 to 40 mass%, and the content ratio of PY150 is 10 mass% or less.

  The total content of the three pigments PR177, PR254, and PY150 with respect to the total mass of the color material in the red pixel may be appropriately adjusted according to the required performance such as contrast, brightness, and tint. From the viewpoint of obtaining a high red pixel, it is preferably 90% by mass or more, and more preferably 100% by mass.

(Green pixel)
In the color filter for LED light source of the present invention, the green pixel contains PG58, PY150 and / or PY138 as the color material, and the total content ratio of the yellow pigment to the total mass of the color material of the green pixel is 5 to 25. % By mass.
Thereby, in the green pixel, even when combined with the LED light source, it is possible to obtain the same display quality as when combined with the CCFL light source while suppressing the chromaticity coordinate from shifting to the yellow side. When the total content of the yellow pigment is less than 5% by mass with respect to the total mass of the color material of the green pixel, it is difficult to display a green pixel with low color purity and high display quality, and the total content of the yellow pigment is 25. If it exceeds mass%, the shift of the chromaticity coordinate of the green pixel to the yellow side cannot be suppressed.

  In addition to the above PG58, PY150, and PY138, the green pixel contains other color materials as necessary to adjust contrast, luminance, color, and the like as long as they do not depart from the spirit of the present invention. Also good.

  The total content of the three pigments PG58, PY150, and PY138 with respect to the total mass of the color material in the green pixel may be adjusted as appropriate according to the required performance such as contrast, brightness, and color. From the viewpoint of obtaining a high green pixel, the content ratio of PG58 is preferably 75 to 95 mass%, and the total content ratio of PY138 and PY150 is preferably 5 to 25 mass%.

(Blue pixel)
In the color filter for LED light source of the present invention, the blue pixel contains a phthalocyanine pigment, and the content ratio of the phthalocyanine pigment with respect to the total mass of the color material of the blue pixel is 90% by mass or more.
As the blue pigment, in addition to the phthalocyanine pigment, C.I. I. Pigment Violet (hereinafter simply referred to as “PV”) 23 and the like, but PV23 is also a violet pigment, that is, a reddish blue.
Therefore, in the blue pixel, the display ratio of the blue pixel can be improved by reducing the content ratio of such a reddish blue pigment and containing the phthalocyanine pigment at a ratio of 90% by mass or more.

  In addition to the phthalocyanine pigment, the blue pixel may appropriately include other color materials as necessary in order to adjust contrast, luminance, color, and the like without departing from the spirit of the present invention. .

  In the color filter for LED light source according to the present invention, in the blue pixel, the phthalocyanine-based blue pigment is selected from the group consisting of PB15: 1, PB15: 3, PB15: 4, PB15: 6 and zinc phthalocyanine pigment, or It is preferable that 2 or more types of pigments are included.

  The said phthalocyanine pigment may be used individually by 1 type, and may be used in combination of 2 or more type.

  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 generally has a color material, a dispersant, a binder, a photoinitiator, a curing agent, a catalyst, and a solvent. Hereinafter, each of such components will be described.

(Color material)
In the present invention, the color material is a concept including a pigment and a dye.
The color filter resin composition for forming a red pixel contains PR177, PR254, and PY150, and when it is a red pixel, the content ratio of PR177 to the total mass of the color material of the red pixel is the content ratio of PR254 And the content ratio of PY150 may be 10% by mass or less. 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 a red pixel may contain a color material other than PR177, PR254, and PY150 without departing from the spirit of the present invention. Examples of such a color material include PR242 and PY139.
The resin composition for a color filter for forming a green pixel contains PG58, PY138 and / or PY150, and when the green pixel is formed, the total content of the yellow pigment relative to the total mass of the color material of the green pixel However, what is necessary is just to make it become 5-25 mass%. Since the content ratios of the three pigments PG58, PY138, and PY150 have been described above, description thereof is omitted here.
The resin composition for a color filter for forming a blue pixel contains a phthalocyanine-based blue pigment, and the content ratio of the phthalocyanine-based blue pigment relative to the total weight of the color material of the blue pixel may be 90% by mass or more. . Since other suitable conditions such as the type of the phthalocyanine-based blue pigment have been described above, description thereof is omitted here.

(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 it is used as a color pixel of a color filter, and varies depending on the type of pigment used. From the viewpoint of improving the contrast, it is preferably in the range of 10 to 50 nm, more preferably in the range of 10 to 40 nm. When the average primary particle diameter of the pigment is in the above range, the liquid crystal display device and the organic light emitting 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 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, with respect to 100 or more 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).

  In the resin composition for color filters, the mass ratio (P / V) between the color material (P) and the solid content (V) other than the color material is preferably 0.05 to 0.81 from the viewpoint of plate making. . If P / V is 0.05 or more, the generation of wrinkles on the pixel surface and a decrease in luminance contrast can be suppressed. On the other hand, if P / V is 0.81 or less, the developability is good.

(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. 2007-070342 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 resin composition for a color filter of the present invention may contain various other components as necessary without departing from the spirit of the present invention.
For example, a pigment derivative may be included without departing from the spirit of the present invention. 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, as the surfactant, for example, polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene octylphenyl ether, polyoxyethylene nonylphenyl ether, polyethylene glycol dilaurate, polyethylene Examples include 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)
In order to improve the contrast of the display image, the light shielding unit 30 is usually provided so as to surround between the colored pixels 21 to 23 and the outside of the pixel formation region. 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. Moreover, 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 developed 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, It is obtained by drying 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 color filter for an LED light source according to the present invention is excellent in display quality particularly when combined with an LED (B-YAG).

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.
Note that the liquid crystal display device of the present invention is not limited to the configuration shown in FIG. 3, and can generally have a known configuration as a liquid crystal display device using a color filter.

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 resin composition 1-5 for color filter for red pixel)
The following materials were mixed and stirred at room temperature to prepare resin compositions 1 to 5 for red pixel color filters.

(Resin composition 1 for color filter for red pixel)
PR177 (average primary particle size 30 nm): 59 parts by mass PR254 (average primary particle size 50 nm): 33 parts by mass PY150 (average primary particle size 50 nm): 8 parts by mass The curable resin composition (binder): 100 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd., trade name DISPERBYK2000): 60 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 30 nm): 58 parts by mass PR254 (average primary particle size 50 nm): 40 parts by mass PY150 (average primary particle size 50 nm): 2 parts by mass The curable resin composition (binder): 100 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd., trade name DISPERBYK2000): 60 parts by mass 3-methoxybutyl acetate (solvent): 800 parts by mass

(Resin composition 3 for red pixel color filter)
PR177 (average primary particle size 30 nm): 67 parts by mass PR254 (average primary particle size 50 nm): 33 parts by mass The curable resin composition (binder): 100 parts by mass Polymer dispersing agent (Bic Chemie Japan Co., Ltd.) Product name DISPERBYK2000): 60 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 30 nm): 67 parts by mass PR254 (average primary particle size 50 nm): 10 parts by mass PY150 (average primary particle size 50 nm): 23 parts by mass The curable resin composition (binder): 100 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd., trade name DISPERBYK2000): 60 parts by mass 3-methoxybutyl acetate (solvent): 800 parts by mass

(Resin composition 5 for red pixel color filter)
PR177 (average primary particle size 30 nm): 40 parts by mass PR254 (average primary particle size 50 nm): 50 parts by mass PY150 (average primary particle size 50 nm): 10 parts by mass The curable resin composition (binder): 100 Part by mass Polymer dispersant (Brand Chemy Japan Co., Ltd., trade name DISPERBYK2000): 60 parts by mass 3-methoxybutyl acetate (solvent): 800 parts by mass

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

(Resin Composition 1 for Color Filter for Green Pixel)
PG58 (average primary particle size 50 nm): 79 parts by mass PY150 (average primary particle size 50 nm): 21 parts by mass The curable resin composition (binder): 125 parts by mass Polymer dispersant (Bic Chemie Japan Co., Ltd.) Product name DISPERBYK2000): 75 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): 80 parts by mass PY138 (average primary particle size 60 nm): 20 parts by mass The curable resin composition (binder): 125 parts by mass Polymer dispersant (Bic Chemie Japan Co., Ltd.) Product name DISPERBYK2000): 75 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): 93 parts by mass PY150 (average primary particle size 50 nm): 7 parts by mass The curable resin composition (binder): 125 parts by mass Polymer dispersing agent (Bic Chemie Japan Co., Ltd.) Product name DISPERBYK2000): 75 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): 93 parts by mass PY138 (average primary particle size 60 nm): 7 parts by mass The curable resin composition (binder): 125 parts by mass Polymer dispersant (Bic Chemie Japan Co., Ltd.) Product name DISPERBYK2000): 75 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): 65 parts by mass PY150 (average primary particle size 50 nm): 35 parts by mass The curable resin composition (binder): 125 parts by mass Polymer dispersant (Bic Chemie Japan Co., Ltd.) Product name DISPERBYK2000): 75 parts by mass 3-methoxybutyl acetate (solvent): 900 parts by mass

(Green Pixel Color Filter Resin Composition 6)
PG58 (average primary particle size 50 nm): 50 parts by mass PY138 (average primary particle size 60 nm): 50 parts by mass The curable resin composition (binder): 125 parts by mass Polymer dispersing agent (Bic Chemie Japan Co., Ltd.) Product name DISPERBYK2000): 75 parts by mass 3-methoxybutyl acetate (solvent): 900 parts by mass

(Preparation of resin compositions 1 to 4 for a color filter for blue pixels)
The following materials were mixed and stirred at room temperature to prepare resin compositions 1 to 4 for a color filter for blue pixels.

(Resin Composition 1 for Color Filters for Blue Pixels)
PB15: 6 (average primary particle size 50 nm): 100 parts by mass The curable resin composition (binder): 500 parts by mass Polymer dispersant (trade name DISPERBYK2000 manufactured by Big Chemie Japan Co., Ltd.): 300 parts by mass Acetic acid 3-methoxybutyl (solvent): 2500 parts by mass

(Resin Composition 2 for Blue Pixel Color Filter)
PB15: 6 (average primary particle size 50 nm): 50 parts by mass PB15: 3 (average primary particle size 50 nm): 50 parts by mass The curable resin composition (binder): 500 parts by mass Polymer dispersing agent (BIC Chemie Product name DISPERBYK2000 manufactured by Japan Ltd .: 300 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): 95 parts by mass PV23 (average primary particle size 50 nm): 5 parts by mass The curable resin composition (binder): 500 parts by mass Polymer dispersant (BIC Chemie Japan ( Product name DISPERBYK2000): 300 parts by mass 3-methoxybutyl acetate (solvent): 2500 parts by mass

(Resin Composition 4 for Color Filter for Blue Pixel)
PB15: 6 (average primary particle size 50 nm): 85 parts by mass PV23 (average primary particle size 50 nm): 15 parts by mass The above curable resin composition (binder): 500 parts by mass Polymer dispersant (BIC Chemie Japan ( Product name DISPERBYK2000): 300 parts by mass 3-methoxybutyl acetate (solvent): 2500 parts by mass

  Table 1 summarizes the pigment contents in the color material of the color filter resin composition of each color pixel. Table 2 shows a summary of ratios of specific pigments to the entire color material of the color filter resin composition of each color pixel.

Example 1
Each of the prepared color filter resin compositions 1 for red, green, and blue pixels of the above-described color filter is applied onto a 0.7 mm-thick glass substrate (“NA35” manufactured by NH Techno Glass Co., Ltd.). It applied using. Then, it heat-dried for 3 minutes on an 80 degreeC hotplate. A color filter having red, green, and blue colored pixels was 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.

(Examples 2-3 and 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.

Example 4
In Example 1, a color filter having only green pixels was obtained in the same manner as in Example 1 except that only the green pixels were formed using the resin composition shown in Table 1.

(Comparative Example 2)
In Example 1, a color filter having only red and green pixels was 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.

Chromaticity (x, y), luminance (Y), and contrast in the combination of the color filter having each colored pixel obtained in the above-mentioned examples and comparative examples, and LED (B-YAG) and LED (B-RG) Was measured using a microspectrophotometer, trade name OSP-SP200 manufactured by Olympus Corporation. The results are also shown in Table 1.
The graph which plotted the chromaticity coordinate in the combination of the color filter and LED (B-YAG) which have each colored pixel obtained in the said Example and comparative example, and the chromaticity coordinate in the combination of the said color filter and CCFL light source is shown. Shown in 5-7.
As chromaticity coordinates of the CCFL light source serving as a reference, red pixels are x = 0.552 and y = 0.327, green pixels are x = 0.313 and y = 0.607, and blue pixels are x = 0.153 and y = 0.062. .

  From Table 1 and FIGS. 5-7, in the coloring pixel of each color combined with LED (B-YAG), the result of the chromaticity coordinate of an Example is closer to the chromaticity coordinate of a combination with a CCFL light source than a comparative example, became. That is, the display quality equivalent to the combination with the CCFL light source was obtained by combining the color filter of the example and the LED (B-YAG).

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 (6)

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 red 254 , and C.I. I. With or without pigment yellow 150,
C. with respect to the total mass of the color material of the red pixel. I. The content ratio of Pigment Red 177 is C.I. I. More than the content ratio of Pigment Red 254,
The red pixel has C.I. I. When pigment yellow 150 is contained, C.I. relative to the total mass of the color material of the red pixel. I. The content ratio of CI Pigment Yellow 150 is 10% by mass or less,
The green pixel is a C.I. I. Pigment Green 58 and C.I. I. Pigment yellow 138 and / or C.I. I. Pigment Yellow 150,
The total content ratio of the yellow pigment to the total mass of the color material of the green pixel is 5 to 25% by mass,
The blue pixel, contains a phthalocyanine blue pigment state, and are content ratio 90 mass% or more of the phthalocyanine blue pigment to the total weight of the colorant of the blue pixel,
The white light emitting diode light source is at least one selected from a light source combining a blue light emitting diode and a red / green phosphor and a light source combining a blue light emitting diode and an yttrium / aluminum / garnet phosphor. A white light-emitting diode light source color filter.   The C.I. relative to the total mass of the color material of the red pixel. I. Pigment red 177 is contained in an amount of 50 to 70% by mass; I. Pigment Red 254 content is 20 to 40% by mass; I. The white light-emitting diode light source color filter according to claim 1, wherein the content ratio of Pigment Yellow 150 is 10% by mass or less.   The C.I. relative to the total mass of the color material of the green pixel. I. Pigment Green 58 has a content ratio of 75 to 95% by mass, and the C.I. I. Pigment yellow 138 and C.I. I. The white light-emitting diode light source color filter according to claim 1 or 2, wherein the total content of CI Pigment Yellow 150 is 5 to 25% by mass.   The phthalocyanine blue pigment is C.I. I. Pigment blue 15: 1, C.I. I. Pigment blue 15: 3, C.I. I. Pigment blue 15: 4, C.I. I. The white light-emitting diode light source color according to any one of claims 1 to 3, comprising one or more pigments selected from the group consisting of CI Pigment Blue 15: 6 and a zinc phthalocyanine pigment. filter.   5. 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 in which a blue light emitting diode and a yttrium aluminum garnet phosphor are combined. filter.   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.