Organic electroluminescent device

Patent metadata

Field	Value
Publication number	US-10014492-B2
Application number	US-201615261882-A
Country	US
Kind code	B2
Filing date	Sep 10, 2016
Priority date	Mar 19, 2014
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

An organic electroluminescent device includes a substrate, an organic electroluminescent element, and a gas barrier film in this order, in which the organic electroluminescent element is sealed by bonding the substrate and the gas barrier film with an adhesive layer, the gas barrier film includes a base film and a barrier layer that includes at least one inorganic layer, the barrier layer is arranged closer to the organic electroluminescent element than to the base film, a barrier protective layer is arranged between the adhesive layer and the barrier layer, the barrier protective layer is a layer formed of a barrier protective layer forming material that includes organic particles and a binder, and the binder contains inorganic fine particles and a polyfunctional acrylic monomer.

First claim

What is claimed is:

1. An organic electroluminescent device comprising, in this order:
a substrate;
an organic electroluminescent element; and
a gas barrier film,
wherein the organic electroluminescent element is sealed by bonding the substrate and the gas barrier film with an adhesive layer, and includes two electrodes and a light emitting layer that is arranged between the two electrodes,
the gas barrier film includes a base film and a barrier layer that includes at least one inorganic layer, and the barrier layer is arranged closer to the organic electroluminescent element than to the base film,
the organic electroluminescent device further comprises a barrier protective layer that is arranged between the adhesive layer and the barrier layer, and a planarization layer that is arranged between the barrier protective layer and the adhesive layer,
the barrier protective layer is a layer formed of a barrier protective layer forming material that includes organic particles and a binder, and
the binder contains inorganic fine particles and a polyfunctional acrylic monomer.

2. The organic electroluminescent device according to claim 1 , further comprising:
a reflecting layer that is arranged closer to the substrate than to the light emitting layer.

3. The organic electroluminescent device according to claim 2 ,
wherein the reflecting layer is arranged between the substrate and the light emitting layer, and
the reflecting layer is one of the two electrodes.

4. The organic electroluminescent device according to claim 3 ,
wherein a distance between the reflecting layer and the light emitting layer is 100 nm or more.

5. The organic electroluminescent device according to claim 3 ,
wherein the barrier layer is composed of a barrier laminate that includes an inorganic layer and an organic layer.

6. The organic electroluminescent device according to claim 2 ,
wherein the reflecting layer is arranged on the outer side of the substrate with respect to the organic electroluminescent element.

7. The organic electroluminescent device according to claim 6 ,
wherein the barrier layer is composed of a barrier laminate that includes an inorganic layer and an organic layer.

8. The organic electroluminescent device according to claim 1 ,
wherein the inorganic fine particles are titanium oxide fine particles.

9. The organic electroluminescent device according to claim 1 ,
wherein the adhesive layer is formed of an ultraviolet curable adhesive.

10. The organic electroluminescent device according to claim 1 ,
wherein a refractive index of the adhesive layer is 1.55 or more.

11. The organic electroluminescent device according to claim 1 ,
wherein the adhesive layer is arranged between the organic electroluminescent element and the barrier protective layer.

12. The organic electroluminescent device according to claim 11 ,
wherein the adhesive layer is formed over an entire surface of the organic electroluminescent element on the opposite side to the barrier protective layer.

13. The organic electroluminescent device according to claim 1 ,
wherein the barrier layer is composed of a barrier laminate that includes an inorganic layer and an organic layer.

14. The organic electroluminescent device according to claim 1 ,
wherein the barrier protective layer forming material includes cross-linked resin particles, inorganic fine particles, and a polyfunctional acrylic monomer, and
the content of the cross-linked resin particles in the barrier protective layer is 30% by volume or more to 66% by volume or less.

15. The organic electroluminescent device according to claim 1 ,
wherein the organic particles are cross-linked polymethyl methacrylate particles.

Assignees

• Fujifilm Corp

Inventors

• MOTOMURA Yuya

Classifications

• C08F20/30

  containing aromatic rings in the alcohol moiety · CPC title

• C08F20/14

  Methyl esters {, e.g. methyl (meth)acrylate} · CPC title

• C08F220/343

  in the form of urethane links · CPC title

• C08K3/22

  of metals · CPC title

• C08K2003/2241

  Titanium dioxide · CPC title