# US 9,040,603 B2 · Ink-jet ink for color filter and method for preparing the same and method for preparation of color filter

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- Number: US 9,040,603 B2
- Document ID: US9040603B2
- Status: Granted
- Kind: B2
- Application number: 13/491,846
- Filed: 2012-06-08
- Published: 2012-12-13
- Granted: 2015-05-26
- Earliest claimed: 2011-06-09
- Assignees: Boe Technology Group Co., Ltd.
- Applicants: Shi Shu; Jianshe Xue; Jisheng Zhao; Lin Li
- Inventors: Shi Shu; Jianshe Xue; Jisheng Zhao; Lin Li
- Web page: https://patentgrep.com/patent/US9040603B2

## CPC

- C09D 125/14: with unsaturated esters
- C09D 11/101: Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
- C09D 11/322: Pigment inks
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

The disclosure provides an ink jet ink for color filter and a method for preparing the same, as well as a method for preparing of a color filter. The ink jet ink for color filter comprising, by weight, 10 to 50 parts of aqueous nano pigment dispersion and 51 to 95 parts of a cold curing component.

## Claims

### Claim 1

An ink-jet ink for color filter comprising, by weight, 10 to 50 parts of aqueous nano pigment dispersion and 51 to 95 parts of a cold curing component.

### Claim 2 (depends on 1)

The ink-jet ink for color filter according to claim 1, wherein the aqueous nano pigment dispersion comprises 0.5 wt % to 10 wt % of an organic pigment or dye, 7 wt % to 59.5 wt % of a copolymer of styrene and an acrylic ester, and 40 wt % to 90 wt % of deionized water, wherein the sum of the weight percentages of the above-mentioned components amounts to 100 wt %.

### Claim 3 (depends on 1)

The inkjet ink for color filter according to claim 1, wherein the cold curing component comprises, by weight, 40 to 80 parts of an acrylic ester emulsion containing a first cold curing component and 1 to 20 parts of a second cold curing component.

### Claim 4 (depends on 3)

The inkjet ink for color filter according to claim 3, wherein the first cold curing component comprises an active carbonyl group, and the second cold curing component comprises a hydrazide; or the first cold curing component comprises an acetoacetyloxy group, and the second cold curing component comprises a polyamine.

### Claim 5 (depends on 1)

A method for preparing of a color filter, comprising
coating a black light-shielding material on a substrate, and forming a light-shielding pattern by a patterning process;
dropping an ink-jet ink for color filter according to claim 1 onto the portion of the substrate other than the light-shielding pattern; and
curing the substrate under a predetermined temperature to obtain the color filter.

### Claim 6 (depends on 5)

The method for preparing of a color filter according to claim 5, wherein the set temperature is 10 to 100° C.