Pigment composition for color filter

A pigment composition and color filter technology, which is applied in the direction of instruments, optical filters, organic dyes, etc., can solve the problems of uneven coating, insufficient light transmittance, insufficient brightness and contrast of color filters, etc. bright effect

Inactive Publication Date: 2009-09-23
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, when applied to inks for color filters for liquid crystal displays, there are still the following unresolved shortcomings: when spin coating is performed on a glass substrate, coating unevenness occurs due to the decrease in Newtonian fluidity of the ink, etc.; After the pixel is formed, the brightness and contrast of the color filter are insufficient due to insufficient light transmittance
However, in this document, there is no description of the use of color filters

Method used

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  • Pigment composition for color filter
  • Pigment composition for color filter
  • Pigment composition for color filter

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0091] "Surfonamine B-200" (trade name) (primary amine-terminal poly(ethylene oxide / propylene oxide) (5 / 95) copolymer, number average In the mixture of molecular weight about 2000), 66 parts of sodium carbonate and 150 parts of water, add 210 parts of copper phthalocyanine sulfonyl chloride (sulfonation degree=1), react at 5 ℃~room temperature for 6 hours. The obtained reaction mixture was heated to 90° C. under vacuum to remove water, and a copper phthalocyanine sulfamoyl compound (S1) was obtained.

manufacture example 2～16

[0093] Copper phthalocyanine sulfamoyl compounds (S2) to (S16) were obtained in the same manner as in Production Example 1 except that the raw materials used were the combinations described in Table 1. Also, in Production Example 12, UNILUBE 20MT-2000B (trade name, manufactured by NOF Corporation), which is a monoalkyl polyether having a branched C24 hydrocarbon group, was converted into a polyether monoamine by reductive amination reaction.

[0094] Table 1

[0095]

[0096]

[0097] The color filter was manufactured by the following method, and the evaluation result is shown in Table 2.

[0098] [Manufacturing method of color filter for test]

Embodiment 1

[0100] Copper phthalocyanine sulfamoyl compound (S1) represented by general formula (1) obtained in 3.0 parts of manufacture example 1, 10.0 parts of ε type copper phthalocyanine pigment (pigment blue 15:6, the product of average primary particle diameter 50nm ), 0.20 parts of FASTOGEN SUPER VIOLET RVS (trade name: manufactured by Dainippon Ink Industry Co., Ltd., Pigment Violet 23), and 49 parts of propylene glycol monomethyl ether acetate, add 0.5mmΦ ceramic beads (sepr beads), and adjust with paint (manufactured by Toyo Seiki Co., Ltd.) for 2 hours to obtain a blue pigment dispersion. 75.00 parts of the blue pigment dispersion, 5.50 parts of polyester acrylate resin (ARONIX M7100, manufactured by Toa Gosei Chemical Industry Co., Ltd.), 5.00 parts of dipentaerythritol hexaacrylate (KAYARAD DPHA, manufactured by Nippon Kayaku Co., Ltd.) were stirred with a dispersing mixer. ), 1.00 parts of benzophenone (KAYACURE BP-100, manufactured by Nippon Kayaku Co., Ltd.), and 13.5 part...

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PUM

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Abstract

Disclosed are: a pigment composition or dispersion which can be suitably used for the production of a blue pixel part of a color filter for a liquid crystal display device; and a color filter. Specifically disclosed are: a color filter equipped with a blue pixel part which enables to provide a liquid crystal display device having a higher-contrast and higher-brightness display screen; and a pigment composition or dispersion which can provide the color filter. The pigment composition or dispersion for a color filter comprises: a copper phthalocyanine sulfamoyl compound which has a specific polyalkyleneoxide group and is substituted by a sulfamoyl group; and a blue organic pigment. The pigment composition or dispersion enables to provide a color filter equipped with a blue pixel part which can provide a liquid crystal display device having a high contrast and a high brightness.

Description

technical field [0001] The present invention relates to a pigment composition or pigment dispersion suitable for producing a blue pixel portion of a color filter of a liquid crystal display device, and a color filter obtained by using the pigment composition or pigment dispersion in a blue pixel portion. Background technique [0002] The color filter of a liquid crystal display device has a red pixel part (R), a green pixel part (G), and a blue pixel part (B). Each of these pixel portions has a structure in which a synthetic resin film in which an organic pigment is dispersed is provided on a substrate, and organic pigments of various colors such as red, green, and blue can be used as the organic pigment. [0003] In these pixel parts, ε-type copper phthalocyanine pigment (C.I. Pigment Blue 15:6) is usually used as a blue organic pigment for forming a blue pixel part, and a small amount of it can be used in combination for color toning if necessary. Violet organic pigments ...

Claims

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Application Information

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IPC IPC(8): G02B5/20C09B67/20G02B5/22
Inventor 川原田雪彦石森元和船仓省二
Owner DIC CORP
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