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

• US 9,354,367 B2
• Filed: 04/15/2013
• Issued: 05/31/2016
• Est. Priority Date: 04/23/2012
• Status: Active Grant

• Current Assignee: Dai Nippon Printing Company Limited
• Original Assignee: Dai Nippon Printing Company Limited
• Inventors: Okada, Masato, Endo, Daisuke, Ogura, Michihiro, Murata, Tomoki, Segawa, Hiroaki
• Primary Examiner(s): McPherson, John A
• Application Number:
  US14/396,217
• Publication Number:
  US 20150077685A1
• Time in Patent Office: 1,142 Days
• Field of Search: 430/7, 106/402, 106/439, 349/106
• US Class Current: 1/1
• CPC Class Codes: C09B 11/28 Pyronines ; Xanthon, thioxanthon, selenoxanthan, telluroxanthon dyes
• CPC Class Codes: C09D 11/322 Pigment inks
• CPC Class Codes: G02B 1/04 made of organic materials, e.g. plastics G02B1/08 takes precedence
• CPC Class Codes: G02B 5/223 containing organic substances, e.g. dyes, inks or pigments
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133516 Methods for their manufacture, e.g. printing, electro-deposition or photolithography
• CPC Class Codes: G03F 7/0007 Filters, e.g. additive colour filters; Components for display devices
• CPC Class Codes: G03F 7/038 Macromolecular compounds which are rendered insoluble or differentially wettable G03F7/075 takes precedence; macromolecular azides G03F7/012; macromolecular diazonium compounds G03F7/021
• CPC Class Codes: G03F 7/105 having substances, e.g. indicators, for forming visible images
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]

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.)

Claims

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;

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.