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Color composition for color filter and color filter

A coloring composition and color filter technology, which can be used in instruments, filters, photosensitive materials for opto-mechanical equipment, etc., can solve problems such as foreign matter generation, and achieve the effects of excellent adhesion and high storage stability.

Active Publication Date: 2014-07-09
TOYO INK SC HOLD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the method disclosed therein, since the copolymer and the anionic dye are mixed in an organic solvent, there is a problem that the dye with high polarity cannot be sufficiently dissolved to generate foreign matter.

Method used

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  • Color composition for color filter and color filter
  • Color composition for color filter and color filter
  • Color composition for color filter and color filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0272] Embodiment 1: the making of coloring composition (DB-1)

[0273] After stirring and mixing the ingredients shown in the following Table A uniformly, using zirconia beads with a diameter of 0.5 mm, and dispersing them with an Eiger mill ("Mini model M-250MKII" manufactured by Eiger Japan Co., Ltd.) for 5 hours, Filtration was performed through a 5.0 μm filter to prepare a pigment dispersion (DB-1).

[0274] Form A:

[0275]

Embodiment 2～8、17～20

[0276] Examples 2-8, 17-20, Comparative Examples 1-3: Production of Coloring Compositions (DB-2-15)

[0277] Coloring compositions (DB-2 to 15) were produced in the same manner as in Example 1, except that the salt-forming product and the micronized pigment were changed to the compositions shown in Table 2.

[0278]

[0279] About the obtained coloring composition (DB-1-15), the test concerning storage stability and coating film foreign matter was done by the following method. Table 2 shows the test results.

[0280] Storage stability test method

[0281] The viscosity at 25° C. of the prepared coloring composition was measured at a rotation speed of 20 rpm using an E-type viscometer (TUE-20L manufactured by Toki Sangyo Co., Ltd.). The viscosity change rate was calculated from the initial viscosity on the day of preparation of the coloring composition and the accelerated time-dependent viscosity after storage in a 40° C. constant temperature room for 7 days, and the storag...

Embodiment 9～16、21～24

[0294] Embodiment 9~16, 21~24, comparative example 4~6

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Abstract

PROBLEM TO BE SOLVED: To provide a color composition for a color filter excellent in storage stability and a color filter preventing generation of foreign matter in a coated film and having strong adhesion with a transparent substrate such as glass.SOLUTION: A color composition for a color filter comprising at least a colorant, a resin and an organic solvent contains a salt forming compound obtained by reaction of a resin having a cationic group in a side chain group with an anionic dye.

Description

technical field [0001] This invention relates to the coloring composition for color filters used for manufacture of a color filter, and the color filter which has the filter segment formed using it, The color filter is used for a color liquid crystal display device, a color pickup tube element, etc. Background technique [0002] In recent years, liquid crystal display devices have been evaluated to have space-saving properties, light weight properties, and power-saving properties due to their thinness, and have recently been widely used in television applications. In television applications, further improvements in performance such as brightness and contrast are required, and further enhancement of transmittance, improvement in contrast, and the like are also desired in color filters that constitute components of color liquid crystal devices. [0003] As a method of manufacturing a color filter, the following methods are known: a dyeing method in which a pattern is dyed afte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/004G03F7/032G02B5/20
CPCG02B5/20G02B5/201G03F7/004G03F7/0045G03F7/0047
Inventor 斋藤悠生北村健一小久保奈津子山本昌幸佐佐木正博
Owner TOYO INK SC HOLD CO LTD