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

Patent metadata

Field	Value
Publication number	US-11655371-B2
Application number	US-202117363805-A
Country	US
Kind code	B2
Filing date	Jun 30, 2021
Priority date	Jun 28, 2016
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

A color filter including at least a transparent substrate and color layers disposed on the substrate. At least one of the color layers contains a compound which is represented by the following general formula (I):In general formula (I), “A” is a substituent group represented by the following general formula (IV):

First claim

The invention claimed is:

1. A color filter comprising at least a transparent substrate and color layers disposed on the substrate, wherein at least one of the color layers contains a compound which is represented by the following general formula (I):

where “A” is a substituent group represented by the following general formula (IV):

where R 21 is an alkylene group containing 1 to 3 carbon atoms and optionally containing, as a substituent group, an alkyl group containing 1 to 4 carbon atoms or an alkoxy group containing 1 to 4 carbon atoms; each of R 22 and R 23 is independently an alkyl group containing 1 to 4 carbon atoms or an alkoxy group containing 1 to 4 carbon atoms; “p” is an integer of from 1 to 3; each of “q” and “r” is independently an integer of from 0 to 4; when two or more R 21 s are present, they may be the same or different; when two or more R 22 s are present, they may be the same or different; when two or more R 23 s are present, they may be the same or different; and when two or more “r”s are present, they may be the same or different;
each of R 1 , R 2 , R 3 , R 4 and R 5 is independently a hydrogen atom, an alkyl group optionally containing a substituent group, or an aryl group optionally containing a substituent group;
each of R 6 and R 7 is independently an alkyl group optionally containing a substituent group or an alkoxy group optionally containing a substituent group;
Ar 1 is a divalent aromatic group optionally containing a substituent group;
B c− is a “c”-valent anion;
“a” is 2;
“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; each of “f” and “g” is an integer of from 0 to 4; each of “f+e” and “g+e” is from 0 to 4; R 1 s may be the same or different; R 2 s may be the same or different; R 3 s may be the same or different; R 4 s may be the same or different; R 5 s may be the same or different; R 6 s may be the same or different; R 7 s may be the same or different; Ar 1 s may be the same or different; “e”s may be the same or different; “f” s may be the same or different; and “g”s may be the same or different.

2. The color filter according to claim 1 , wherein the compound represented by the general formula (I) further contains a structure represented by the following (ii):
(ii) at least one of R 2 , R 3 , R 4 and R 5 is a cycloalkyl group optionally containing a substituent group or an aryl group optionally containing a substituent group.

3. The color filter according to claim 1 , wherein, for a visible light transmission spectrum of the color layer containing the compound which is represented by the general formula (I), a maximum transmittance at 400 nm or more and 500 nm or less is 86% or more; a minimum transmittance at 550 nm or more and 650 nm or less is 2% or less; and a wavelength indicating the maximum transmittance at 400 nm or more and 500 nm or less, is in a range of from 425 nm to 455 nm.

4. A liquid crystal display device comprising the color filter defined by claim 1 , a counter substrate, and a liquid crystal layer disposed between the color filter and the counter substrate.

5. A light-emitting display device comprising the color filter defined by claim 1 and a light-emitting body.

Assignees

• Dainippon Printing Co Ltd

Inventors

• Okada Masato
• Amano Hiroko

Classifications

• C09B69/109

  containing other specific dyes · CPC title

• C09B67/009

  polymeric dispersing agent · CPC title

• H10K59/38

  comprising colour filters or colour changing media [CCM] · CPC title

• C09B11/16 Primary

  Preparation from diarylketones or diarylcarbinols {, e.g. benzhydrol} · CPC title

• C08K5/29

  Compounds containing {one or more} carbon-to-nitrogen double bonds · CPC title