Pigmentation composition for color filter, color filter and method of manufacturing the color filter

A coloring composition, color filter technology, applied in the direction of photosensitive materials, instruments, optical filters, etc. used for optomechanical equipment, can solve the problem that the coating liquid is unstable over time, has insufficient stability over time, cannot fully It can eliminate problems such as ground removal, and achieve the effects of excellent stability over time, reduced film thickness unevenness, and good quality.

Active Publication Date: 2007-09-12
TOYO INK SC HOLD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Time-dependent instability of the coating liquid: Relative to the initial viscosity of the coating liquid, the viscosity changes after a period of time, that is, the "time-dependent stability" is insufficient
[0015] How to reduce such disadvantages is a topic that needs to be studied, but the methods described in the above-mentioned patent documents that contain only high-boiling point solvents, or the method of forming a solvent composition with an evaporation rate within a specific range cannot sufficiently eliminate the above-mentioned disadvantages.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] After the mixture of the following composition was stirred and mixed uniformly, glass beads with a diameter of 1 mm were used to disperse with a sand mill for 5 hours, and then filtered with a 5 μm filter to prepare a red pigment dispersion.

[0125] Red pigments: diketopyrrolopyrrole pigments

[0126] (C.I. Pigment Red 254) 9.95 parts

[0127] (Ciba Specialty Chemicals "イルガフオ一レツド B-CF")

[0128] Anthraquinone pigment (C.I. Pigment Red 177) 1.58 parts

[0129] (Ciba Specialty Chemicals "クロモフタ一ルレツド A2B")

[0130] Anthraquinone pigment (C.I. Pigment Yellow 199) 0.47 parts

[0131] (Ciba Specialty Chemicals "Cromofuta Luero GT-AD")

[0132] Red pigment count: 12.0 parts

[0133] Pigment dispersant ("Serus Pace 20000" manufactured by Enuka) 2.40 parts

[0134] Acrylic resin solution 25.6 parts

[0135] 60.0 parts of cyclohexanone

[0136] Next, after stirring and mixing the mixture of the following composition uniformly, it filtered with a 1 micromet...

Embodiment 2～11 and comparative example 1～3

[0148]The pigments and organic solvents corresponding to the colors in the respective Examples and the respective Comparative Examples shown in Tables 1A to 1E are selected from the following substances. In addition, in addition to changing the mixing amount of the pigment, pigment dispersant, acrylic resin, monomer, photopolymerization initiator, sensitizer, organic solvent, and conductivity modifier to the ratio shown in Tables 1A to 1E (the coloring composition Except that the total amount was set to 100 parts by weight and the ratio with respect to the solvent and the pigment portion being 100), the same procedure as in Example 1 was carried out to obtain a coloring composition prepared into each resist material.

[0149] Red pigments: diketopyrrolopyrrole pigments (C.I. Pigment Red 254)

[0150] 3.78 copies

[0151] (Ciba Specialty Chemicals "イルガフオ一レツド B-CF")

[0152] Anthraquinone pigment (C.I. Pigment Red 177) 0.60 parts

[015...

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PUM

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Abstract

The present invention provides a colored composition for color filters which includes transparent resin, color material and organic solvent; the organic solvent includes an organic solvent A which has a boiling point more than 160 DEG C and lower than 250 DEG C below 760 mm Hg, and has an electric conductivity more than 0.001 nS/cm and lower than 0.8 nS/cm under 25 DEG C, and an organic solvent B which has a boiling point more than 100 DEG C and lower than 160 DEG C below 760 mm Hg, and has an electric conductivity more than 0.8 nS/cm and lower than 50 nS/cm under 25 DEG C; taking the organic solvent total amount as basic standard, the content of organic solvent A is a rate more than 5 weight % and lower than 60 weight%; taking the organic solvent total amount as basic standard, the content of organic solvent B is a rate more than 40 weight % and lower than 95 weight%. In addition, a color filter having a filter segment formed by using the colored composition and a manufacturing method for the color filter are also provided.

Description

Technical field [0001] The present invention relates to a coloring composition used in a color filter used in a color liquid crystal display device, a color imaging tube element, etc., and a color filter using the coloring composition and a method of manufacturing the color filter. Background technique [0002] The color filter constituting the liquid crystal display (LCD), color camera element (CCD), etc. is formed by applying a coating liquid (coloring composition for color filter) on a transparent substrate and drying to form a coating with a thickness of about 1 to 3 μm. Film to manufacture. As the coating method, there is a spin coating method, a die coating method, etc., and it is appropriately used according to its characteristics. [0003] The spin coating method is a method widely used to form a thin film on a relatively small substrate. While rotating the transparent substrate at a predetermined speed, the coating liquid is dropped on the center of the transparent subst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/14G02B5/23G02F1/1335C08L83/04C08K5/06C08K5/07C08K5/101C08L33/02C08L33/04G02B5/20G02B5/22G03F7/004
CPCC08K5/06C08K5/101C08L33/02G02B5/20G02F1/1335G03F7/004
Inventor 和久寿男山田和则
Owner TOYO INK SC HOLD CO LTD
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