Photosensitive colored ink composition for bezel, bezel pattern formed by using same, and display substrate containing same

Patent metadata

Field	Value
Publication number	US-10739677-B2
Application number	US-201515518951-A
Country	US
Kind code	B2
Filing date	Dec 11, 2015
Priority date	Dec 11, 2014
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

This invention relates to a photosensitive color ink composition for a bezel, including (A) a cationic polymerizable alicyclic epoxy monomer, (B) a cationic polymerizable aliphatic epoxy monomer, (C) an oxetane monomer, (D) a photopolymerization initiator, and (E) a colorant, and to a bezel pattern formed using the same.

First claim

The invention claimed is:

1. A photosensitive color ink composition for a bezel, comprising: (A) a cationic polymerizable alicyclic epoxy monomer; (B) a cationic polymerizable aliphatic epoxy monomer; (C) an oxetane monomer; (D) a photopolymerization initiator; (E) a colorant, and (F) an organosilane, and having a viscosity of 5 cP to 20 cP at 25° C.,
wherein (A) the cationic polymerizable alicylic epoxy monomer is 3,4-epoxycyclohexylmethyl-3′,4-epoxycyclohexane carboxylate,
wherein (B) the cationic polymerizable aliphatic epoxy monomer is neopentyl glycol diglycidyl ether or 1,4-cyclohexanedimethanol diglycidyl ether,
wherein (C) the oxetane monomer is 3-ethyl-3-[(2-ethylhexyloxy)methyl]oxetane,
wherein (F) the organosilane is 3-glycidoxypropyl trimethoxy silane,
wherein (A) the cationic polymerizable alicyclic epoxy monomer is present in an amount of 15 wt %, based on the total weight of the ink composition,
wherein (B) the cationic polymerizable aliphatic epoxy monomer is present in an amount of 5 to 20 wt %, based on the total weight of the ink composition,
wherein (C) the oxetane monomer is present in an amount of 30 to 49 wt %, based on the total weight of the ink composition,
wherein a content ratio of (A) the cationic polymerizable alicyclic epoxy monomer to (C) the oxetane monomer ranges from 1:2 to 1:3.3, and
wherein a content ratio of (A) the cationic polymerizable alicyclic epoxy monomer to (B) the cationic polymerizable aliphatic epoxy monomer ranges from 1:0.3 to 1:1.3.

2. The photosensitive color ink composition of claim 1 , further comprising (G) a solvent; and (H) an additive.

3. The photosensitive color ink composition of claim 1 , wherein (D) the photopolymerization initiator is at least one selected from among an iodonium salt and a sulfonium salt.

4. The photosensitive color ink composition of claim 2 , wherein (H) the additive is at least one selected from among a surfactant and a photosensitizer.

5. The photosensitive color ink composition of claim 1 , wherein the ink composition has a curing dose of 1 to 10,000 mJ/cm 2 .

6. A method of manufacturing a bezel for a display panel, comprising forming a bezel pattern on a substrate using the ink composition of claim 1 .

7. The method of claim 6 , wherein the bezel pattern is formed on the substrate using any one process selected from among an inkjet printing process, a gravure printing process and a reverse-offset printing process.

8. The method of claim 6 , wherein a strength of adhesion between the bezel pattern and the substrate ranges from 10 gf/mm to 200 gf/mm.

9. A bezel pattern for a display panel, formed on a substrate by curing the photosensitive color ink composition of claim 1 .

10. The bezel pattern of claim 9 , wherein a strength of adhesion between the bezel pattern and the substrate ranges from 10 gf/mm to 200 gf/mm.

11. The bezel pattern of claim 9 , wherein the bezel pattern has a thickness of 0.5 to 10 μm.

12. The bezel pattern of claim 9 , wherein the bezel pattern has an optical density of 0.1 to 5 for a film thickness of 2.0 μm.

13. A display panel, comprising the bezel pattern of claim 9 .

Assignees

• Lg Chemical Ltd

Inventors

• Park Sung-Eun
• Goo Yong-Sung
• Back Seung-A
• Kim Joon-Hyung

Classifications

• C09D11/101 Primary

  Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing · CPC title

• C08G65/226

  containing fluorine · CPC title

• C08K5/5435

  containing oxygen in a ring · CPC title

• C08G65/18

  Oxetanes · CPC title

• G03F7/038

  Macromolecular compounds which are rendered insoluble or differentially wettable (G03F7/075 takes precedence; macromolecular azides G03F7/012; macromolecular diazonium compounds G03F7/021) · CPC title