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Dye dispersion composition for color filter and dye dispersion resist composition for color filter

A color filter and composition technology, applied in the direction of optical filters, azo dyes, organic dyes, etc., can solve problems such as viscosity changes or insufficient optical properties, achieve good dispersion stability, improve brightness, and prevent color tone effect of change

Pending Publication Date: 2021-01-12
SAKATA INX
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, it is not yet sufficient in terms of viscosity change or optical properties

Method used

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  • Dye dispersion composition for color filter and dye dispersion resist composition for color filter
  • Dye dispersion composition for color filter and dye dispersion resist composition for color filter
  • Dye dispersion composition for color filter and dye dispersion resist composition for color filter

Examples

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Embodiment

[0187] The following examples are given to illustrate the present invention in more detail, but the present invention is not limited to these examples. In addition, unless otherwise stated, "%" means "% by mass", and "part" means "part by mass".

[0188]

[0189] The dye dispersion compositions for color filters of Examples and Comparative Examples were obtained using the following materials.

[0190] (color material)

[0191] Dechlorinated xanthene dye: 10 g of 1-methoxy-2-propanol was added to 2 g of Acid Red 289, and then 0.63 g of concentrated hydrochloric acid was added, followed by ultrasonic treatment. The obtained solution was filtered with a 0.25 μm PTFE membrane filter. The resulting filtrate was dropped into 300 g of propylene glycol monomethyl ether acetate and the precipitated chlorinated dye was filtered off. Drying gave Acid Red 289 as a hydrochloric acid treatment.

[0192] Micronized insoluble xanthene-based dye: a micronized insoluble xanthene-based dye...

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Abstract

The present invention addresses the problem of reducing the viscosity of a resist composition for a color filter and achieving excellent viscosity stability and excellent optical characteristics whenthe resist composition for a color filter is prepared on the basis of a dye dispersion composition for a color filter. As a solution, provided is the dye dispersion composition for the color filter, which is characterized by containing a micronized insoluble xanthene dye, a dispersant that is an acrylic block polymer, a dispersion aid that is a phenyl group-containing phosphoric acid, an alkali-soluble resin and an organic solvent.

Description

technical field [0001] The present invention relates to a dye dispersion composition for color filters and a dye dispersion resist composition for color filters. Background technique [0002] In a color filter for organic EL etc., when Pigment Blue 15:6 and a soluble dye are used together as a colorant, color rendering or brightness may become insufficient due to the influence of the manufacturing process. In addition, when a soluble dye is used in combination, there is a problem that migration to other colors due to heat cannot be eliminated. [0003] Therefore, by using Pigment Blue 15:6 in combination with an insoluble dye as a colorant, reliability can be improved, but the dispersion stability of the colorant can be ensured, but it is insufficient in terms of brightness. [0004] In addition, as described in Patent Documents 2 and 3, the known coloring compositions for color filters having dye particles having substantially small particle diameters are not micronized wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B57/00C09B67/02C09B67/38C09B67/22G03F7/004C09K23/52
CPCC09B67/0033C09B67/0097C09B57/00C09B67/0063C09B67/0065C09B67/0069G03F7/004C09B11/28C09B67/009G02B5/20
Inventor 林明杉江俊辅马场智子
Owner SAKATA INX
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