Photopolymerizable composition and cured film and display device using the same

Patent metadata

Field	Value
Publication number	US-12404355-B2
Application number	US-202117540824-A
Country	US
Kind code	B2
Filing date	Dec 2, 2021
Priority date	Jun 4, 2019
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

The present disclosure relates to a photopolymerizable composition capable of improving UV transmittance while maintaining excellent performance such as dielectric constant and sensitivity of a display device, and a cured film and a display device using the same.

First claim

The invention claimed is:

1. A photopolymerizable composition comprising:
one or more olefinic monomers;
metal oxide particles;
a dispersant; and
a photopolymerization initiator,
wherein the olefinic monomer comprises one or more olefinic monomers having an absolute viscosity measured at 25° C. of 1 cP to 30 cP,
wherein the olefinic monomer comprises a mono(meth)acrylate monomer having an absolute viscosity measured at 25° C. of 1 cP or more and 11 cP or less,
wherein the mono(meth)acrylate monomer comprises an aliphatic mono(meth)acrylate having 6 to 20 carbon atoms, and
wherein the aliphatic mono(meth)acrylate comprises at least one selected from the group consisting of isodecyl (meth)acrylate, isobornyl (meth)acrylate, lauryl (meth)acrylate, ethoxy ethyl(meth)acrylate, dicyclopentenyl (meth)acrylate, dicyclopentenyl oxyethyl(meth)acrylate, and dicyclopentanyl(meth)acrylate.

2. The photopolymerizable composition of claim 1 , wherein the olefinic monomer further comprises a glycol di(meth)acrylate monomer having an absolute viscosity measured at 25° C. of 11 cP to 30 cP.

3. The photopolymerizable composition of claim 1 , wherein the mono(meth)acrylate monomer further comprises an aromatic mono(meth)acrylate having 8 to 30 carbon atoms.

4. The photopolymerizable composition of claim 3 , wherein the aromatic mono(meth)acrylate having 8 to 30 carbon atoms comprises at least one selected from the group consisting of benzyl (meth)acrylate, phenoxy ethyl(meth)acrylate, and phenoxy benzyl(meth)acrylate.

5. The photopolymerizable composition of claim 2 , wherein the glycol di(meth)acrylate monomer comprises at least one selected from the group consisting of 1,6-hexanediol di(meth)acrylate, triethylene glycol di(meth)acrylate, tetraethylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, and tripropylene glycol di(meth)acrylate.

6. The photopolymerizable composition of claim 1 , wherein the olefinic monomer further comprises at least one selected from the group consisting of a low-viscosity first olefinic monomer having an absolute viscosity measured at 25° C. of 1 cP to 5 cP, and a high-viscosity second olefinic monomer having an absolute viscosity measured at 25° C. of 8 cP to 30 cP.

7. The photopolymerizable composition of claim 6 , wherein the olefinic monomer comprises the low-viscosity first olefinic monomer and the high-viscosity second olefinic monomer.

8. The photopolymerizable composition of claim 6 ,
wherein content of the low-viscosity first olefinic monomer is 10 parts by weight to 80 parts by weight relative to 100 parts by weight of the high-viscosity second olefinic monomer.

9. The photopolymerizable composition of claim 6 , wherein the second olefinic monomer comprises a high-viscosity olefinic monomer having an absolute viscosity measured at 25° C. of 8 cP to 15 cP.

10. The photopolymerizable composition of claim 6 , wherein the low-viscosity first olefinic monomer comprises at least one selected from the group consisting of benzyl (meth)acrylate, isodecyl (meth)acrylate, lauryl (meth)acrylate, ethoxyethyl (meth)acrylate, dicyclopentenyl (meth)acrylate, and dicyclopentanyl (meth)acrylate.

11. The photopolymerizable composition of claim 6 , wherein the high-viscosity second olefinic monomer comprises at least one selected from the group consisting of dicyclopentenyl oxyethyl (meth)acrylate, phenoxy ethyl(meth)acrylate, phenoxy benzyl(meth)acrylate, isobornyl (meth)acrylate, 1,6-hexanediol di(meth)acrylate, triethylene glycol di(meth)acrylate, tetraethylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate, and tripropylene glycol di(meth)acrylate.

12. The photopolymerizable composition of claim 1 , wherein the metal oxide particles comprise a metal element selected from the group consisting of Zn, Zr, Ti, Hf and Ce.

13. The photopolymerizable composition of claim 1 , wherein a D50 particle size of the metal oxide particles is 5 nm to 100 nm.

14. The photopolymerizable composition of claim 1 , which comprises
5% by weight to 85% by weight of the olefinic monomer;
10% by weight to 70% by weight of metal oxide particles;
0.1% by weight to 30% by weight of a dispersant; and
0.1% by weight to 30% by weight of a photopolymerization initiator,
based on 100% by weight of the total content of the photopolymerizable composition.

15. The photopolymerizable composition of claim 1 , wherein the dispersant is at least one selected from the group consisting of acryl-based, epoxy-based and silicone-based compounds.

16. The photopolymerizable composition of claim 1 , wherein the photopolymerization initiator is at least one selected from the group consisting of triazine-based, benzoin-based, benzophenone-based, imidazole-based, xanthone-based, oxime ester-based and acetophenone-based compounds.

17. The photopolymerizable composition of claim 1 , which further comprises any one or more additives selected from the group consisting of 0.1 parts by weight to 30 parts by weight of a melamine crosslinking agent, or 0.1 parts by weight to 30 parts by weight of a silane coupling agent, based on 100 parts by weight of the photopolymerizable composition.

18. A cured film comprising a cured product of the photopolymerizable composition of claim 1 .

19. A photopolymerizable composition comprising:
one or more olefinic monomers;
metal oxide particles;
a dispersant; and
a photopolymerization initiator,
wherein the olefinic monomer comprises one or more olefinic monomers having an absolute viscosity measured at 25° C. of 1 cP to 30 cP,
wherein the olefinic monomer comprises a glycol di(meth)acrylate monomer having an absolute viscosity measured at 25° C. of 11 cP to 30 cP, and
wherein the dispersant is at least one selected from the group consisting of acryl-based, epoxy-based, and silicone-based compounds.

20. A cured film comprising a cured product of the photopolymerizable composition of claim 19 .

Assignees

• Dongjin Semichem Co Ltd

Inventors

• Park Jonghyuk
• Youn Hyoc-Min
• Yeo Tai Hoon
• Lee Sang-Hoon
• Oh Wooram
• Lee Jongwook

Classifications

• C08K2003/2296

  of zinc · CPC title

• C08K2003/2244

  of zirconium · CPC title

• C08K2003/2241

  Titanium dioxide · CPC title

• C08K2003/2213

  of cerium · CPC title

• C08K3/22

  of metals · CPC title