Color material dispersion liquid, color resin composition for color filters, color filter, liquid crystal display device, and organic light-emitting display device

Patent metadata

Field	Value
Publication number	US-9354367-B2
Application number	US-201314396217-A
Country	US
Kind code	B2
Filing date	Apr 15, 2013
Priority date	Apr 23, 2012
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

An object of the present invention is to provide a color material dispersion liquid which is able to form a coating film with high luminance, excellent heat resistance and excellent light resistance. Disclosed is a color material dispersion liquid including a color material represented by the following general formula (I), a dispersant, and a specific solvent, wherein molybdenum and tungsten are contained in a polyoxometalate anion in the color material, and a molar ratio between the molybdenum and the tungsten is 0.4:99.6 to 15:85:

(Symbols shown in the general formula (I) are described in the Description.)

First claim

The invention claimed is:

1. A color material dispersion liquid comprising a color material represented by the following general formula (I), a polymer dispersant in which a nitrogen atom is contained in a main or side chain thereof, and a solvent having a solubility of the color material of 0.1 (mg/10 g solvent) or less at 23° C., wherein molybdenum and tungsten are contained in a polyoxometalate anion in the color material, and a molar ratio between the molybdenum and the tungsten is 0.4:99.6 to 15:85:

wherein A is an “a”-valent organic group in which a carbon atom directly bound to N has no π bond, and the organic group is an aliphatic hydrocarbon group having a saturated aliphatic hydrocarbon group at least at a terminal position directly bound to N, or an aromatic group having the aliphatic hydrocarbon group having a saturated aliphatic hydrocarbon group at least at a terminal position directly bound to N, and O, S, N can be contained in a carbon chain of the organic group; B c− is a “c”-valent polyoxometalate anion; each of R i to R v is independently a hydrogen atom, an alkyl group which can have a substituent group, or an aryl group which can have a substituent group; R ii and R iii can be bound to form a ring structure, and/or R iv and R v can be bound to form a ring structure; Ar 1 is a divalent aromatic group which can have a substituent group; R i s can be the same or different; R ii s can be the same or different; R iii s can be the same or different; R iv s can be the same or different; R v s can be the same or different; and Ar 1 s can be the same or different; and
wherein each of “a” and “c” is an integer of 2 or more; each of “b” and “d” is an integer of 1 or more; “e” is 0 or 1 and there is no bond when “e” is 0; and “e”s can be the same or different.

2. The color material dispersion liquid according to claim 1 , wherein the solvent is an ester solvent.

3. A color resin composition for color filters, comprising the color material dispersion liquid defined by claim 1 and a binder component.

4. A color filter comprising at least a transparent substrate and color layers disposed on the substrate, wherein at least one of the color layers is a color layer which is a cured product of the color resin composition defined by claim 3 .

5. A liquid crystal display device comprising the color filter defined by claim 4 , a counter substrate, and a liquid crystal layer present between the color filter and the counter substrate.

6. An organic light-emitting display device comprising the color filter defined by claim 4 and an organic light-emitting material.

Assignees

• Dainippon Printing Co Ltd

Inventors

• Okada Masato
• Endo Daisuke
• Ogura Michihiro
• Murata Tomoki
• Segawa Hiroaki

Classifications

• G02F1/133514

  Colour filters · CPC title

• G03F7/105

  having substances, e.g. indicators, for forming visible images · CPC title

• G03F7/0007

  Filters, e.g. additive colour filters; Components for display devices · CPC title

• G02B1/04

  made of organic materials, e.g. plastics (G02B1/08 takes precedence) · CPC title

• G02F1/133516

  Methods for their manufacture, e.g. printing, electro-deposition or photolithography · CPC title