Encapsulating composition

Patent metadata

Field	Value
Publication number	US-12312484-B2
Application number	US-201917292633-A
Country	US
Kind code	B2
Filing date	Nov 12, 2019
Priority date	Nov 12, 2018
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

The present disclosure relates to an encapsulating composition and an organic electronic device comprising the same, and provides an encapsulating composition which can effectively block moisture or oxygen introduced into an organic electronic device from the outside to secure the lifetime of the organic electronic device, can implement a top-emitting organic electronic device, can be applied in an inkjet method and can provide a thin display having low dielectric constant characteristics.

First claim

The invention claimed is:

1. An encapsulating composition comprising:
a multifunctional monomer of Formula 1;
a multifunctional monomer of Formula 2; and
a monofunctional monomer,
wherein the multifunctional monomer of Formula 1 is comprised in the encapsulating composition in a range of 50 wt % or less:

wherein, in Formula 1, R 1 is hydrogen or an alkyl group having 1 to 4 carbon atoms, n is a number of 2 to 10, and X represents a residue derived from a cyclic alkyl group having 6 to 30 carbon atoms, where X contains two or less oxygen atoms, and

wherein, in Formula 2, R 1 is hydrogen or an alkyl group having 1 to 4 carbon atoms, n is a number of 2 to 10, and X represents a residue derived from a linear or branched alkyl group having 11 to 30 carbon atoms, excluding a cyclic structure, where X contains two or less oxygen atoms.

2. The encapsulating composition according to claim 1 , wherein X in Formula 1 contains no oxygen atom.

3. The encapsulating composition according to claim 1 , wherein X in Formula 1 has an alicyclic structure.

4. The encapsulating composition according to claim 1 , wherein X in Formula 1 has a bicyclic or tricyclic structure.

5. The encapsulating composition according to claim 1 , wherein X in Formula 2 represents a residue derived from a linear alkyl group having 12 to 30 carbon atoms.

6. The encapsulating composition according to claim 1 , wherein X in Formula 2 contains no oxygen atom.

7. The encapsulating composition according to claim 1 , wherein the multifunctional monomer of Formula 2 is comprised in a range of 50 to 140 parts by weight relative to 100 parts by weight of the multifunctional monomer of Formula 1.

8. The encapsulating composition according to claim 1 , wherein the monofunctional monomer is comprised in a range of 80 to 230 parts by weight relative to 100 parts by weight of the multifunctional monomer of Formula 1.

9. The encapsulating composition according to claim 1 , wherein the monofunctional monomer comprises an alkyl (meth)acrylate.

10. The encapsulating composition according to claim 1 , wherein the monofunctional monomer comprises an alkyl (meth)acrylate containing a linear, branched or cyclic alkyl group having 8 to 30 carbon atoms.

11. The encapsulating composition according to claim 1 , further comprising a crosslinking agent.

12. The encapsulating composition according to claim 11 , wherein the crosslinking agent is comprised in a range of 10 to 70 parts by weight relative to 100 parts by weight of the multifunctional monomer of Formula 1.

13. The encapsulating composition according to claim 1 , further comprising a photoinitiator.

14. The encapsulating composition according to claim 13 , wherein the photoinitiator is a radical initiator.

15. The encapsulating composition according to claim 1 , further comprising a surfactant.

16. The encapsulating composition according to claim 15 , wherein the surfactant comprises a silicone-based compound.

17. The encapsulating composition according to claim 1 , wherein the composition is an ink composition which is a solventless type.

18. An organic electronic device comprising;
a substrate;
an organic electronic element formed on the substrate; and
an organic layer encapsulating the entire surface of the organic electronic element,
wherein the organic layer comprises the encapsulating composition according to claim 1 .

19. A method for manufacturing an organic electronic device, comprising a step of forming an organic layer on a substrate, on which an organic electronic element is formed, by applying the encapsulating composition of claim 1 so as to encapsulate the entire surface of the organic electronic element.

Assignees

• Lg Chemical Ltd

Inventors

• Choi Kook Hyun
• Kim Joon Hyung
• Kwak Ji Won
• Yu Mi Lim
• Lee Yung Jong

Classifications

• H10K50/8445

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K71/135

  using ink-jet printing · CPC title

• H10K50/84

  Passivation; Containers; Encapsulations · CPC title

• C09D11/38 Primary

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• C09D11/36

  based on non-aqueous solvents · CPC title