Colorant dispersion liquid for color filter, coloring composition for color filter, color filter and display device

A coloring composition and color filter technology, which is applied in the field of colorant dispersion liquid for color filters and coloring compositions for color filters, can solve the problems of high degree of dispersion, parallax color mixing, insufficient technology, etc., and achieve good dispersion and good Dispersion performance and dispersion stability performance, and the effect of improving voltage retention
CN106336739BActive Publication Date: 2021-09-28DNP FINE CHEMICALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DNP FINE CHEMICALS CO LTD
Publication Date
2021-09-28

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Abstract

The present invention relates to a color material dispersion liquid for color filters, a coloring composition for color filters, a color filter, and a display device. Excellent pigment dispersion for color filters. In addition, there is provided a coloring composition for a color filter using a colorant dispersion liquid, which has a high residual film rate when producing a colored layer, and which can satisfactorily color the colorant even if the colorant concentration of the coloring composition is increased. Even if the concentration of the colorant is increased, it is not easy to deteriorate over time. The subject of the present invention can be solved by the color material dispersion liquid for color filter containing color material, dispersant and solvent, and the coloring composition for color filter using the same, and color filter. It is characterized in that the total mass of calcium (Ca) and iron (Fe) contained in the color material dispersion liquid for color filters is 180 mass ppm or less with respect to the entire color material dispersion liquid for color filters.
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Description

technical field

[0001] The present invention relates to a colorant dispersion liquid for color filters, a coloring composition for color filters, and more specifically, the present invention relates to a colorant dispersion liquid for color filters, a coloring composition for color filters and Use the color filters they get. Background technique

[0002] A color filter used in a display screen generally has a transparent substrate, a colored layer, a light-shielding portion, and the like. Methods for forming the colored layer include a pigment dispersion method, a dyeing method, an electrodeposition method, and a printing method. Among them, From the viewpoint of spectral characteristics, durability, pattern shape, precision, etc., the pigment dispersion method is widely used (Patent Documents 1 and 2).

[0003] In recent years, due to the development of displays, the demand for liquid crystal displays, organic EL displays, etc. has increased, and along with this, among the...

Claims

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