Ink for inkjet, color filter, manufacturing method therefor, color reflection-type display, and manufacturing method therefor

Patent metadata

Field	Value
Publication number	US-9988544-B2
Application number	US-201514628832-A
Country	US
Kind code	B2
Filing date	Feb 23, 2015
Priority date	Aug 22, 2012
Publication date	Jun 5, 2018
Grant date	Jun 5, 2018

Abstract

An ink for a piezoelectric driving-type inkjet for printing on a resin-based ink receiving layer formed on one surface of a reflection-type display contains 30% by weight to 75% by weight of a solvent which hardly dissolves the ink receiving layer and 3% by weight to 30% by weight of an alcohol-based solvent which easily dissolves the ink receiving layer.

First claim

The invention claimed is:

1. An ink for forming a color filter for a reflection-type display, comprising:
a colorant;
a resin selected for a color tone of the colorant;
a dispersant that disperses the colorant to the resin; and
a solvent comprising an organic solvent in a content of 30% by weight to 75% by weight, and an alcohol-based solvent in a content of 3% by weight to 30% by weight,
wherein the organic solvent comprises at least one carbitol-based solvent selected from the group consisting of diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, and diethylene glycol monobutyl ether acetate, and the alcohol-based solvent is benzyl alcohol.

2. The ink according to claim 1 , wherein the organic solvent comprises at least one carbitol-based solvent selected from the group consisting of diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, and diethylene glycol monobutyl ether acetate.

3. The ink according to claim 1 , wherein the carbitol-based solvent is diethylene glycol monoethyl ether acetate.

4. The ink according to claim 1 , wherein the colorant comprises at least one coloring pigment or coloring dye in a range of from 0.5% by weight to 10% by weight.

5. The ink according to claim 1 , further comprising:
a fluorine-based surfactant in a range of from 0.01% by weight to 3.00% by weight.

6. The ink according to claim 1 , further comprising:
a fluororesin made from at least one selected from the group consisting of vinylidene fluoride, vinyl fluoride and trifluoroethylene.

7. The ink according to claim 6 , wherein the fluororesin is included in a range of from 0.01% by weight to 3.00% by weight.

8. A color filter, comprising:
an inkjet ink layer made from the ink according to claim 1 .

9. A color filter, comprising:
an inkjet ink layer made from the ink according to claim 2 .

10. A color filter, comprising:
an inkjet ink layer made from the ink according to claim 3 .

11. A color reflection-type display, comprising:
the color filter according to claim 8 .

12. A color reflection-type display, comprising:
the color filter according to claim 9 .

13. A color reflection-type display, comprising:
the color filter according to claim 10 .

14. A method of manufacturing a color filter for a reflection-type display, comprising:
forming an inkjet ink layer on an ink receiving layer of the reflection-type display,
wherein the forming of the inkjet ink layer comprises ejecting the ink according to claim 1 on the ink receiving layer.

15. The method according to claim 14 , further comprising:
preparing a long hole-shaped pattern by continuously discharging an ink droplet impacting portion in the inkjet ejection such that a pixel colored portion having the long hole-shaped pattern is formed.

16. A method of manufacturing a color filter for a reflection-type display, comprising:
forming an inkjet ink layer on an ink receiving layer of the reflection-type display,
wherein the forming of the inkjet ink layer comprises ejecting the ink according to claim 2 on the ink receiving layer.

17. A method of manufacturing a color filter for a reflection-type display, comprising:
forming an inkjet ink layer on an ink receiving layer of the reflection-type display,
wherein the forming of the inkjet ink layer comprises ejecting the ink according to claim 3 on the ink receiving layer.

18. A method of manufacturing a color reflection-type display, comprising:
forming an ink receiving layer; and
forming a color filter layer on the ink receiving layer,
wherein the forming of the color filter layer comprises ejecting the ink according to claim 1 on the ink receiving layer.

19. A method of manufacturing a color reflection-type display, comprising:
forming an ink receiving layer; and
forming a color filter layer on the ink receiving layer,
wherein the forming of the color filter layer comprises ejecting the ink according to claim 3 on the ink receiving layer.

20. The method according to claim 19 , wherein the ink receiving layer is formed from a urethane resin.

Assignees

• Toppan Printing Co Ltd

Inventors

• Kobashi Yasuhiro

Classifications

• C09D11/36 Primary

  based on non-aqueous solvents · CPC title

• C09D127/14

  Homopolymers or copolymers of vinyl fluoride · CPC title

• G02F1/167

  by electrophoresis · CPC title

• G02F1/1335

  Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title

• G02F1/133516

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