Ultraviolet Curable Ink Composition, Method for Manufacturing Bezel Pattern in Display Substrate by Using Same, and Bezel Pattern Manufactured Thereby

Patent metadata

Field	Value
Publication number	US-2020291252-A1
Application number	US-201816491770-A
Country	US
Kind code	A1
Filing date	Dec 26, 2018
Priority date	Dec 27, 2017
Publication date	Sep 17, 2020
Grant date	—

Abstract

An ultraviolet curable ink composition, a method for forming a bezel pattern using the same, a bezel pattern produced by the method, and a display substrate comprising the bezel pattern are disclosed herein. In some embodiments, an ultraviolet curable ink composition comprises a colorant, an epoxy monomer, an oxetane monomer, a cationic photo-polymerization initiator, and a polymerization inhibitor, wherein the weight ratio of the epoxy monomer to the oxetane monomer is 1:0.5 to 1:6.

First claim

1 . A ultraviolet curable ink composition comprising a colorant, an epoxy monomer, an oxetane monomer, a cationic photopolymerization initiator and a polymerization inhibitor, wherein a weight ratio of the epoxy monomer to the oxetane monomer is 1:0.5 to 1:6.

2 . The ultraviolet curable ink composition according to claim 1 , wherein the composition further comprises at least one selected from the group consisting of a diluting solvent, an adhesion promoter, a surfactant and a photosensitizer.

3 . The ultraviolet curable ink composition according to claim 1 , wherein the polymerization inhibitor is an amine compound.

4 . The ultraviolet curable ink composition according to claim 3 , wherein the amine compound is a monovalent amine or a divalent amine.

5 . The ultraviolet curable ink composition according to claim 3 , wherein the amine compound is a primary amine, a secondary amine or a tertiary amine.

6 . The ultraviolet curable ink composition according to claim 3 , wherein the amine compound is a tertiary amine.

7 . The ultraviolet curable ink composition according to claim 5 , wherein the amine compound has at least one functional group bonded to a nitrogen atom, wherein the at least one functional group is selected from the group consisting of (C1-C6) alkyl, (C2-C6) alkenyl, (C2-C6) alkynyl, phenyl, (C1-C6) ketone, (C1-C6) ether and (C1-C6) ester, and wherein the at least one functional group is substituted with one or more substituents selected from the group consisting of a amide group, a cyan group, a carboxyl group, an aldehyde group and a hydroxy group.

8 . The ultraviolet curable ink composition according to claim 7 , wherein the amine compound is a tertiary amine in which three functional groups bonded to the nitrogen atom are, independently, (C1-C6) alkyl and wherein one of the functional groups is substituted with hydroxy.

9 . The ultraviolet curable ink composition according to claim 3 , wherein the amine compound is di(C1-C6) alkylamino (C1-C6) alkanol.

10 . The ultraviolet curable ink composition according to claim 9 , wherein the amine compound is at least one selected from the group consisting of 2-dimethylaminoethanol (2-DMAEA), 3-dimethylamino-1-propanol (3-DMA-1-PA) and dimethylaminomethanol (DMAMA).

11 - 15 . (canceled)

16 . The ultraviolet curable ink composition according to claim 1 , wherein the polymerization inhibitor is present in an amount of 0.2 to 4.9% by weight based on the total weight of the ultraviolet curable ink composition.

17 - 23 . (canceled)

24 . The ultraviolet curable ink composition according to claim 1 , wherein the ultraviolet curable ink composition has a viscosity of 1 to 50 cP at 25° C.

25 . The ultraviolet curable ink composition according to claim 1 , wherein the viscosity of the ink composition increases at a rate of 100% or less when the ink composition is stored at 45° C. for 3 months.

26 - 28 . (canceled)

29 . A method of manufacturing a bezel pattern for a display substrate, comprising:
forming the ultraviolet curable ink composition according to claim 1 on a substrate in the shape of a bezel pattern; and curing the ink composition to form the bezel pattern.

30 - 33 . (canceled)

34 . The method of manufacturing a bezel pattern for a display substrate according to claim 29 , wherein the thickness of the bezel pattern is 0.1 to 20 μm after curing.

35 - 36 . (canceled)

37 . A bezel pattern for a display substrate, the bezel pattern formed by patterning and curing the ultraviolet curable ink composition of claim 1 .

38 . The bezel pattern for a display substrate according to claim 37 , wherein the thickness of the bezel pattern is 0.1 to 20 μm.

39 . (canceled)

40 . The bezel pattern for a display substrate according to claim 37 , wherein the taper angle of the bezel pattern is 0° to 10°.

41 . The bezel pattern for a display substrate according to claim 37 , wherein the optical density (OD) of the bezel pattern is 0.05 to 2.5 on the basis of the film thickness of 1.0 μm.

42 . A display substrate comprising the bezel pattern according to claim 37 .

Assignees

• Lg Chemical Ltd

Inventors

• Park Sungeun
• Yoo Jaehyun
• Kim Areum
• Kim Joonhyung

Classifications

• B41J11/002

  Curing or drying the ink on the copy materials, e.g. by heating or irradiating · CPC title

• B41J2/2107

  characterised by the ink properties (supplying ink in a solid state B41J2/17593) · CPC title

• B41J2/01

  Ink jet · CPC title

• G03F9/70

  for microlithography (measuring printed patterns for monitoring overlay G03F7/70633 or focus G03F7/70641; projection system adjustment G03F7/70258; position control G03F7/70775) · CPC title

• C09D11/30

  Inkjet printing inks · CPC title