Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B5/00—Optical elements other than lenses
  • G02B5/20—Filters
  • G02B5/201—Filters in the form of arrays

Definitions

• the present invention relates to a color filter composition used for a color liquid crystal display device and the like, a cured product formed using the same, and a color filter, and more specifically, a color filter suitable for forming a blue pixel.
• the present invention relates to a composition and a cured product thereof.
• a color filter has been widely used for the purpose of colorization of a liquid crystal display device or the like, and generally, red, green, and blue pixels are arranged in a mosaic pattern.
• Known methods for producing this color filter include dyeing, printing, electrodeposition, and pigment dispersion.
• a pigment dispersion method in which a fine pixel is formed by photolithography using a composition for a color filter in which a pigment is dispersed together with a photosensitive resin and Z or a monomer (hereinafter also referred to as a color resist ink). Because of the use of pigments, it is excellent in light resistance, heat resistance and solvent resistance, and has become the mainstream of color filter manufacturing methods.
• the pigment of each pixel is generally selected so as to match the transmission characteristics of the pixel and the light emission characteristics of the backlight.
• a yellow pigment, an orange pigment, and a green pixel are used for a red pixel.
• a blue pixel is added to a blue pixel in a certain ratio in addition to a blue pigment to give a desired transmission characteristic.
• Documents related to the present invention include the following documents.
• Patent Document 1 JP5-281414 A
• Patent Document 2 _JP2543052 B
• Patent Document 3 _JP2004-010838 A
• This pigment 'violet 23 is often mixed for the purpose of improving the blue purity of a copper phthalocyanine blue pigment that slightly transmits green light because the blue transmission region is closer to the short wavelength side than the copper phthalocyanine blue pigment.
• This pigment 'violet 23 is often mixed for the purpose of improving the blue purity of a copper phthalocyanine blue pigment that slightly transmits green light because the blue transmission region is closer to the short wavelength side than the copper phthalocyanine blue pigment.
• This method of mixing two pigments with different transmission regions there is a trade-off between high brightness and high saturation, and there is a pigment that has a large transmission range and low transmittance compared to copper phthalocyanine blue pigments.
• this method using Violet 23 there was a problem that the high level of lightness and saturation could not be satisfied at the same time.
• Patent Document 3 discloses a pigment dispersion, a color resist ink, and a color filter using a pigment having a power of a subphthalocyanine compound, and the model color filter using the pigment has high brightness and saturation (blue). However, since the transmittance on the long wavelength side is high and red light is transmitted with little force, color selectivity may be impaired. Disclosure of the invention
• the present invention has been made in view of the disadvantages of the prior art, and uses a composition for a color filter for forming a pixel that gives high, lightness, and saturation, and is used for a liquid crystal display device and the like.
• An object of the present invention is to provide a cured product and a color filter formed. Means for solving the problem [0010]
• the present inventors As a result of intensive investigations to solve the above-mentioned problems, the present inventors, as a result, have high brightness, color, and the like, in particular, with respect to blue color of yarns and composites containing a specific pigment and blended with the specific pigment.
• the present invention has been completed by finding that it is suitable for use in color filter pixel formation.
• the present invention provides a color filter comprising (A) a photosensitive resin and Z or monomer, (B) a coloring material, (C) a solvent, and (D) a photopolymerization initiator.
• the composition further comprises 0.5% by weight or more of a pigment having a subphthalocyanine compound strength represented by the following general formula (1) as a coloring material component of (B) in the total coloring material:
• Composition for color filter characterized in that (B) / (R), expressed as a weight ratio of the colorant (B) to the solid content of the resin (B) / (R) in the range of 0.05 to L.5 It is a thing.
• X to X are hydrogen atoms or halogen atoms, preferably at least 6
• Halogen atoms more preferably all are halogen atoms.
• Y represents an alkyl group, aryl group, alkoxy group or aryloxy group which may have a substituent.
• This color filter composition further comprises, as a dispersant, at least one nitrogen-containing compound that is selected from (a) poly (lower alkyleneimine) and (b) polyallylamine, and (i) polyester.
• a graft polymer obtained by reacting at least one compound having a free carboxyl group, which is selected from the group consisting of (ii) polyamide and (iii) polyesteramide, can also be contained.
• (A) photosensitive resin and Z or monomer It is preferably made of an epoxy acrylate having a fluorene skeleton.
• the present invention relates to a cured product obtained by curing the composition for a color filter and a color filter in which a cured film forming a blue pixel is composed of the cured product.
• the color filter composition (color filter material) of the present invention comprises (A) photosensitive resin and Z or monomer (hereinafter also referred to as component (A)), (B) colorant (hereinafter referred to as component). It contains (B), u), (C) solvent (hereinafter referred to as component (C)) and (D) photopolymerization initiator (hereinafter also referred to as component (D)) as essential components.
• component (A) photosensitive resin and Z or monomer
• component hereinafter also referred to as component
• component contains (B), u), (C) solvent (hereinafter referred to as component (C)) and (D) photopolymerization initiator (hereinafter also referred to as component (D)) as essential components.
• the photosensitive resin and Z or monomer of component (A) is selected from at least one of photopolymerizable resin, photopolymerizable monomer and photopolymerizable oligomer, and has an ethylenically unsaturated bond. It is what you have. What is necessary is just to include the thing which becomes rosin in the cured state in the composition for color filters. In the solids content of the present invention, monomers and oligomers before the solidification are treated as solids. Component (A) may be appropriately selected in consideration of the color filter manufacturing process.
• photopolymerizable resin, photopolymerizable monomer and photopolymerizable oligomer examples include 2-hydroxyxetyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-ethyl hexyl (meth).
• ethylene glycol di (meth) acrylate diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, pentaerythritol di (meth) acrylate, di Pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, bisphenol A type epoxy di (meth) acrylate, bisphenol F type epoxy di (meth) acrylate, bisphenol fluorene type epoxy di (meta) ) Atre relay (Meth) acrylic acid esters and the like, and the like.
• bur resin such as acrylic acid (co) polymers, (meth) acrylic acid (co) polymers, maleic acid (co) polymers, polyethylene oxide, polybutaphthalidone, polyamide, polyurethane, polyether, polyester Examples thereof include coffins having an ethylenic double bond in the side chain. These may be used alone or in combination You may use the above together.
• these photosensitive resins preferably have an alkali-soluble substituent such as a carboxyl group or a phenolic hydroxyl group in the side chain for the purpose of improving developability.
• the photosensitive resin and Z or monomer are at least one component because the cured product provides a high level of heat resistance and solvent resistance. It is advantageous to use an epoxy acrylate resin having a fluorene skeleton.
• the epoxy acrylate resin having a fluorene skeleton preferably includes those obtained by reacting an epoxy (meth) acrylate represented by the following general formula (2) with a polybasic acid or an acid anhydride thereof. .
• R and R are any one of a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, a phenol group, and a halogen atom, and X represents the following formula (3)
• N 0 to 10
• R hydrogen
• an epoxy acrylate resin as used in the present invention is used to include derivatives of epoxy acrylate resin, such as epoxy meta acrylate resin.
• examples of the polybasic acid or acid anhydride thereof include maleic acid, succinic acid, itaconic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, methylendomethylenetetrahydrophthalic acid, and chlorende.
• examples include acids, methyltetrahydrophthalic acid, trimellitic acid, pyromellitic acid, benzophenone tetracarboxylic acid, biphenyl tetracarboxylic acid, biphenyl ether tetracarboxylic acid, and acid anhydrides thereof.
• (S2) saturated dicarboxylic acids or (S4) saturated tetracarboxylic acids as these polybasic acids or acid anhydrides thereof.
• the saturation of the saturated dicarboxylic acids and saturated tetracarboxylic rubonic acids does not have an unsaturated bond (bond other than a single bond) other than a carboxylic group (CO) constituting a carboxyl group or an acid anhydride group.
• saturated carboxylic acids include butanetetracarboxylic acid, hexahydrophthalic acid, succinic acid and acid anhydrides thereof. Tetrahydrophthalic acid is also preferred carboxylic acid As an example.
• each of (S2) saturated dicarboxylic acids and (S4) saturated tetracarboxylic acids can be used, and the use ratio of the saturated dicarboxylic acids and saturated tetracarboxylic acids is the molar ratio of S2 ZS4.
• the range is from 0.1 to 10, preferably from 0.2 to 1.
• the ratio of use can be selected in accordance with the optimal molecular weight, alkali developability, light transmission, heat resistance, solvent resistance, and pattern shape effect.
• the larger the ratio of saturated tetracarboxylic acids used the greater the alkalinity.
• the solubility tends to increase and the molecular weight tends to increase.
• the above molar ratio is preferably satisfied.
• the blending ratio of photosensitive resin and Z or monomer is preferably 40 to 95% by weight based on the total solid content in the composition for a color filter of the present invention. It is preferable that it is -90weight%.
• the composition it is desirable that other greaves and the like can be blended as necessary. In this case, it is desirable that the total amount of the other greaves falls within the above range.
• the total solid content means a component remaining as a solid content after polymerization, curing, and drying, and does not include a solvent but includes a monomer.
• the colorant of component (B) needs to contain 0.5% by weight or more of the pigment made of the subphthalocyanine compound represented by the general formula (1) in the total colorant.
• X to X each represents a hydrogen atom or a halogen atom, preferably at least 6
• Rogen atoms more preferably all are halogen atoms.
• the halogen atom may be any of fluorine, chlorine, bromine, iodine and the like, but is preferably chlorine or bromine from the viewpoint of hue.
• all of X to x in the general formula (1) are
• Y in the general formula (1) represents an alkyl group, an aryl group, an alkoxy group or an aryloxy group.
• the alkyl group includes a methyl group, an ethyl group, a propyl group, and a butyl group
• the aryl group includes a phenyl group, a naphthyl group, an anthryl group, a furyl group, a pyridyl group, an indolyl group, and the like.
• alkoxy group examples include a methoxy group, an ethoxy group, a propoxy group, and a butoxy group
• examples of the aryloxy group include a phenoxy group and a naphthoxy group. These are also halogen
• You may have substituents, such as a ruoxy group.
• it may have a substituent having a subphthalocyanine structure and may be a dimer or multimer such as Sub-Y′-Sub.
• Sub represents a substituent having a subphthalocyanine structure such as a group generated by removing Y from the general formula (1).
• Component (B) may contain other pigments or dyes as long as it contains 0.5% by weight or more, preferably 5% by weight or more of the above-mentioned subphthalocyanine pigment in the total colorant. It can also be used. If the content of the subphthalocyanine pigment is less than 0.5% by weight in the colorant, the excellent coloring performance of the pigment cannot be sufficiently exhibited, and a color filter having good transmission characteristics cannot be formed.
• colorants suitable for preparing a blue color resist ink blue and purple pigments are preferable from the viewpoint of hue, for example, Pigment, Blue 15, 15: 1, 15: 2. , 15: 3, 15: 4, 15: 6, 16, 60, 80, Pigment 'Violet 19, 23, 37, etc. Is not to be done.
• the reason for using the subphthalocyanine pigment of the present invention as a colorant is due to the special spectral characteristics of the pigment.
• high-color-rendering three-wavelength fluorescent lamps that have sharp emission at wavelengths corresponding to the three primary colors of red, green, and blue (generally 610 nm, 545 nm, and 435 nm) are widely used for backlights of liquid crystal display devices and the like. It is necessary to effectively transmit these three wavelengths of light and shield the other two wavelengths of light in order to show a high level of lightness and saturation of red, green and blue.
• a color filter manufactured using a color filter composition containing a pigment made of subphthalocyanine as a main colorant disclosed in Patent Document 3 transmits light at around 370 to 510 nm and absorbs at around 520 to 610 nm.
• the color filter manufactured using the color filter composition containing the pigment comprising the subphthalocyanine of the present invention as the main coloring material has a transmission in the vicinity of 370 to 510 nm, while absorbing in a wide range of about 530 to 650 nm. Since it has excellent spectral characteristics, red light emission can also be effectively shielded.
• the color filter of the present invention has high brightness and high saturation, particularly for blue. Also Since the heat resistance of the pigment is increased by changing Y in the general formula (1) to an alkyl group, aryl group, alkoxy group or aryloxy group, it is possible to provide a color filter composition and a color filter with excellent fastness properties. It becomes.
• the production of the subphthalocyanine pigment is generally performed by synthesizing a subphthalocyanine compound and pigmenting it.
• Methods for synthesizing subphthalocyanine compounds are known, and examples include A. Meller and A. Ossko, Monatshefte for Chemie 103, 150-155 (1972), and the like.
• the subphthalocyanine compound obtained by the above method can be converted into the subphthalocyanine compound represented by the general formula (1) used in the present invention by a known method. .
• the thus obtained subphthalocyanine compound often contains impurities caused by side reactions and the like.
• the impurities can be removed by Soxhlet extraction after filtration and washing.
• examples of the impurities include hydrolysis products of raw material trihalogen boron, unreacted lid-tolyl, and the like.
• solvent used for filtration washing or Soxhlet extraction For example, alcohol solvents such as methanol and ethanol, ketone solvents such as acetone and methyl ethyl ketone, and aromatic solvents such as toluene and xylene can be used.
• halogenation may be performed by a known method.
• the synthesis method and purification method are not limited to the above methods.
• a known method can be used as a method for producing a pigment.
• a subphthalocyanine compound is dissolved in a strong acid such as concentrated sulfuric acid and then poured into a large amount of water to form a fine pigment.
• the acid pasting method in which a fine pigment is formed by dispersing in a strong acid and pouring the solution into a large amount of water, can be exemplified.
• a finer pigment in order to obtain a color filter having a high level of color saturation, it is preferable to use a finer pigment as a coloring material.
• a known method can be used for the method of fine graining. Examples thereof include a salt milling method in which the mill is crushed in the presence.
• pigmentation and fine particles The method of conversion is not limited to the above method.
• the pigment used in the present invention is preferably dispersed in an average particle diameter of 50 to 250 nm in the composition! /.
• the ratio of the colorant in the color filter composition is appropriately selected depending on the color concentration and the like, but the weight ratio of (B) colorant to rosin solid (R) in the composition ( B) Z (R) must be in the range of 0.05 to L5, and preferably in the range of 0.1 to 1. If this ratio is less than 0.05! /, The coloring performance cannot be sufficiently exhibited, and it becomes impossible to form a good color filter, and if it exceeds 1.5, the pixel forming ability effective in the photolithography process is not achieved. Cannot be used.
• the solids (R) of the resin is composed of a resin component (including monomers) other than the component (A) and the component (A).
• the solvent of component (C) is preferably an ester, a ketone, a glycol ether, a nitrogen-containing solvent, or the like from the viewpoint of excellent dispersibility of the pigment and, when a dispersant is blended, the solubility thereof.
• ketones for ketones, ethyl ether solvate, cetyl solvate sorb acetate, propylene glycol monomethyl for glycol ethers
• nitrogen-containing solvents such as ether acetate and diethylene glycol dimethyl ether include dimethylformamide and dimethylacetamide. These solvents can be used alone or in combination of two or more, as long as they are appropriately selected according to the composition of the blended resin and other additives, the solvent resistance of the pigment, and the coating properties. Good.
• Examples of the photopolymerization initiator of component (D) include acetophenones such as acetophenone and p-tert-butylacetophenone, benzophenones such as benzophenone and p, p'-bis (N, N-dimethylamino) benzophenone.
• Benzoin ethers such as benzoinethyl ether and benzoin-tert-butyl ether, 2-methyl-1- [4- (methylthio) phenol] -2-morpholinopropan-1-one, 2-benzyl- 2-Aminoalkylphenones such as 2- (N, N-dimethylamino) -1- (4-morpholinophenol) butan-1-one, 2, 4, 6-tris (trichloromethyl) -1, 3,5-triazine, 2- (4-methoxyphenyl) -4,6-bis (trichloromethyl) -1,3,5-triazine and other triazines, benzoyl peroxide, 3, 3 ', 4, A'-tetra (tert-butylperoxycarbol) benzophenone Peroxides, Chiokisanton And sulfur compounds such as 2,4-jetylthioxanthone. These may be used alone or in combination of two or more.
• the blending ratio of the photopolymerization initiator is appropriately selected according to the exposure sensitivity and the like, but is preferably 0.1 to 20% by weight with respect to the component (A). It is preferably 5 to 15% by weight. If the content is less than 0.1% by weight, the photosensitivity becomes insufficient. On the other hand, if it exceeds 20% by weight, the storage stability as a resist ink is insufficient.
• the production method of the color filter composition of the present invention is not limited as long as it contains the above-mentioned essential components, but is a pigment mainly composed of a pigment, a dispersant (hereinafter also referred to as component (E)) and a solvent. It is advantageous to make the dispersion in advance (hereinafter also referred to as pigment dispersion) and then mix with components (A) and (D), optionally added rosins and other components.
• the pigment dispersion contains the above-mentioned subphthalocyanine pigment, dispersant and solvent, and it is preferable that the total solid content in the pigment dispersion is 1 to 40% by weight. It is preferably 5 to 35% by weight.
• the blending ratio of the pigment is preferably 1 to 25% by weight in the pigment dispersion, and more preferably 5 to 20% by weight. Further, the blending ratio of the dispersant is preferably 10 to 60% by weight, more preferably 20 to 50% by weight with respect to the pigment.
• the total solid content means a component remaining after drying and curing.
• the pigment dispersion can be obtained by dispersing the pigment in a solvent together with a dispersant, but the production method is not particularly limited, and a known method can be used. For example, a dispersion treatment using a paint shaker or a bead mill can be used.
• the type thereof is not particularly limited, but from the viewpoint of excellent dispersion stability, it can be derived from (a) poly (lower alkyleneimine) and (b) polyallylamin.
• One or more selected nitrogen-containing compounds are reacted with (i) polyester having a free carboxyl group, (ii) polyamide, and (iii) polyester amideca. It is preferable to use a graft polymer obtained by forming an amide or salt.
• Poly (lower alkyleneimine) is a primary (—NH 2), secondary (—NH—) and tertiary (—N) alkyl.
• a polymer having a branched structure in which a mino group is connected by a lower alkylene chain (-R-, for example, -CH CH-).
• (B) polyallylamine is a polymer having a structure of [—CH—CH (CH NH) —]
• the carboxyl group-containing compound (i), (ii) and () has at least one carboxyl group at the terminal or side chain, and this is a group such as -NH in (a) and (b). at least
• the graft polymer comprises a basic part (a) or (b) that acts as an anchor by adsorbing to a pigment, and a polymer chain part (i, ii, or) that imparts dispersibility by a steric repulsion effect. Both are dispersants.
• a method for producing a graft polymer is known and disclosed in, for example, Japanese Patent Publication No. 63-30057 and Japanese Patent Laid-Open No. 9-169821.
• a pigment derivative type dispersion aid in which an acidic functional group is introduced into the pigment skeleton is used in combination with the dispersant.
• the above-mentioned dispersion aids are preferably those having a hue of blue or purple.
• An acid derivative etc. can be mentioned.
• the dispersant of component (E) is not limited to the graft polymer as described above, and refers to a dispersant having a dispersibility, which is commercially available as a dispersant, a dispersion accelerator, or the like.
• a dispersant having a dispersibility which is commercially available as a dispersant, a dispersion accelerator, or the like.
• Some greaves have the function of adsorbing on the surface of the pigment and dispersing the pigment.
• Such rosins are included in the dispersant because they have dispersibility. Therefore, when (A) the photosensitive resin and Z or the monomer has a dispersibility, this may be used as a dispersant.
• coffins which are high viscosity substances, generally have an action to stabilize dispersion (dispersion stability) but do not have dispersibility, and those that do not have such dispersibility are treated as dispersants. Absent.
• the dispersant is not an essential component, but when it is used, it can be a constituent component of the resin component.
• the color filter composition of the present invention may contain an alkali-soluble resin as a binder resin component for the purpose of improving developability and coating film-forming ability.
• an alkali-soluble resin for the purpose of improving developability and coating film-forming ability.
• polyethylene oxide, polybutylpyrrolidone, polyamide, polyurethane, polyester, polyether, and the like are preferred.
• Those having a carboxyl group in the main chain or side chain and having excellent alkali developability are preferred.
• acrylic Examples thereof include vinyl resins such as acid (co) polymers, (meth) acrylic acid (co) polymers, and maleic acid (co) polymers.
• an acid anhydride to rosin having a hydroxyl group is also useful. These may be used alone or in combination of two or more.
• composition for a color filter of the present invention contains the above-mentioned components (A) to (D) as essential components, but the total solid content is preferably 1 to 40% by weight. It is preferably ⁇ 30% by weight.
• a pigment dispersion in which the above-mentioned subphthalocyanine pigment is dispersed in a solvent using a dispersant alone or together with other pigments is prepared, and this is a resin component.
• a cured product obtained by curing the composition for a color filter of the present invention is obtained by applying the composition to a substrate or the like and curing it by light irradiation, heating or the like.
• a method for applying the composition a known method can be used, and examples thereof include application by a coating apparatus such as a spin coater, a bar coater, and a die coater. After application, dry using a hot plate, IR oven, etc.!
• a known method can be used for irradiating the coated composition with light, and the exposure light source is not particularly limited.
• a xenon lamp, a halogen lamp, a tungsten lamp, an ultra-high pressure mercury lamp, a high-pressure mercury lamp Lamp light sources such as medium-pressure mercury lamps and low-pressure mercury lamps are used.
• the coating and light irradiation methods are not limited to the above methods.
• An image can be formed on a substrate by developing after image exposure with such a light source.
• Any developer can be used as long as it dissolves the unexposed part and does not dissolve the exposed part.
• it is an alkaline solution containing various additives, and the additives can contain organic solvents, buffers, surfactants, and the like.
• the development processing method is not particularly limited, but methods such as immersion development, spray development, brush development and ultrasonic development are used.
• FIG. 1 is a graph showing the spectral transmittance of a model color filter.
• a graft polymer obtained by reacting polyallylamine with a polyester having a free carboxyl group to form an amide was used as the dispersant.
• the media of the paint shaker 0.4 mm ⁇ glass beads were used at a filling rate of 40%, or 0.4 mm ⁇ zirco beads were used at a filling rate of 15%.
• the dispersion thus obtained had a solid content concentration of 14% by weight, and the ratio of the coloring material in the total solid content was 71.4% by weight, indicating low viscosity and low thixotropy.
• This composition for a color filter was applied on a blue plate glass substrate having a size of 5 inches square and a thickness of 1 mm using a spin coater. At this time, test pieces were manufactured by changing the rotation speed of the spin coater. After drying this test piece, it was covered with a photomask and exposed to UV light of 200 mj / cm 2 to cure the color resist ink in the exposed area. Next, the test piece was alkali-developed with a 0.4% aqueous sodium carbonate solution for 60 seconds to remove the unexposed color resist ink and dried. Finally, the test piece was thermally cured to produce a cured film of color resist ink as a model color filter.
• the spectral transmittance, chromaticity (X value, y value), and brightness (Y value) of the model color filter produced were measured using a chromaticity meter (trade name: Color Analyzer TC-1800MK2 manufactured by Tokyo Denshoku Co., Ltd.) The light for colorimetry at this time was auxiliary standard illuminant C.
• the spectral transmittance of the model color filter obtained in this example is shown in FIG. 1, and the chromaticity and brightness are shown in Table 1.
• a dispersion was obtained in the same manner as in Production Example 3, except that the colorant was changed to the chloroethodese decachlorosubphthalocyanine boron complex obtained in Production Example 4.
• a color filter composition was prepared in the same manner as in Example 1 except that this dispersion was used. With respect to this composition, a model color filter was produced in the same manner as in Example 1, and the spectral transmittance, chromaticity, and brightness were measured.
• Propylene glycol monomethyl ether acetate solution of epoxy attalate resin having bisphenol fluorene skeleton is mixed with propylene glycol monomethyl ether acetate solution of methacrylic acid Zbenzyl methacrylate copolymer (methacrylic acid: benzyl methacrylate) (molar ratio)
• methacrylic acid: benzyl methacrylate methacrylic acid: benzyl methacrylate
• the brightness was measured.
• Comparative Example 1 A dispersion was obtained in the same manner as in Production Example 3, except that the colorant was changed to pigment 'violet 23'.
• a color filter composition was prepared in the same manner as in Example 1 except that this dispersion was used.
• a model color filter was produced in the same manner as in Example 1, and the spectral transmittance, chromaticity, and brightness were measured.
• a dispersion was obtained in the same manner as in Production Example 3, except that the colorant was changed to a black mouth-subphthalocyanine boron complex pigment represented by the following formula (7).
• a color filter composition was prepared in the same manner as in Example 1 except that this dispersion was used. With this composition, a model color filter was produced in the same manner as in Example 1, and the spectral transmittance, chromaticity, and brightness were measured.
• FIG. 1 and Table 1 show the results of measuring the spectral transmittance, chromaticity, and brightness of the model color filters obtained in the examples and comparative examples.
• the model color filter comprising the color filter composition of the present invention can effectively transmit the blue light emission of the three-wavelength fluorescent lamp, and can effectively block the red and green light emission. And had high saturation.
• the color is blue (X value force S is small) and the brightness is greatly improved (Y value is increased).
• the cured film had a uniform film thickness and good coatability without aggregated precipitates.
• the color filter composition of the present invention has excellent heat resistance, high brightness, and high saturation, so that it is extremely useful in terms of enabling production of a high-quality liquid crystal display or the like.

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• 2005
  • 2005-07-25 JP JP2006529316A patent/JP4571138B2/ja not_active Expired - Fee Related
  • 2005-07-25 WO PCT/JP2005/013569 patent/WO2006011446A1/ja active Application Filing
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