Substrate for organic electronic device

Patent metadata

Field	Value
Publication number	US-9391301-B2
Application number	US-201514606759-A
Country	US
Kind code	B2
Filing date	Jan 27, 2015
Priority date	Jul 31, 2012
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

Provided are a substrate for an organic electronic device (OED), an organic electronic system, and a light. The substrate capable of forming an OED ensuring excellent performances and reliability because it may have excellent performances including light extraction efficiency, permeation of moisture or a gas from an external environment may be inhibited, and growth of dark spots may be controlled may be provided.

First claim

The invention claimed is:

1. A substrate for an organic electronic device, comprising:
a base layer; and
a planarization layer that is on the base layer and comprises a binder, a first particle, of which a refractive index is 1.8 or more and an average diameter is 50 nm or less, and a second particle, of which a refractive index is lower than a refractive indices of the binder and the first particle and an average diameter is from 100 nm to 500 nm, a ratio (A/B) of a weight (A) of the first particle and a weight (B) of the second particle being from 0.8 to 8,
wherein a surface of the planarization layer, opposite to a surface contacting with the base layer, has a maximum height roughness in a range of 1 μm or less.

2. The substrate according to claim 1 , wherein the planarization layer is in contact with the base layer.

3. The substrate according to claim 1 , wherein the first particle has a refractive index in the range of 2.2 or more.

4. The substrate according to claim 1 , wherein a ratio ((A+B)/C) of the sum of the weight (A) of the first particle and the weight (B) of the second particle relative to a weight (C) of the binder is from 1 to 5.

5. The substrate according to claim 1 , wherein the binder is polysiloxane, poly(amic acid), or polyimide.

6. The substrate according to claim 1 , wherein the second particle is a hollow particle or a particle having a core/shell structure.

7. The substrate according to claim 1 , wherein a refractive index of the binder is 1.4 or more and also less than 1.7.

8. The substrate according to claim 7 , wherein a ratio ((A+B)/C) of the sum of the weight (A) of the first particle and the weight (B) of the second particle relative to the weight (C) of the binder is from 2 to 5.

9. The substrate according to claim 1 , wherein a refractive index of the binder is 1.7 or more.

10. The substrate according to claim 9 , wherein the ratio ((A+B)/C) of the sum of the weight (A) of the first particle and the weight (B) of the second particle relative to the weight (C) of the binder is 1 or more and also less than 2.

11. The substrate according to claim 1 , further comprising an electrode layer on the planarization layer.

12. The substrate according to claim 11 , wherein a projected area of the planarization layer is smaller than that of the electrode layer, and the electrode layer is formed on the planarization layer and on the base layer, below which the planarization layer is not formed.

13. An organic electronic device, comprising:
the substrate of claim 1 ; and
a first electrode layer, an organic layer comprising an emitting layer, and a second electrode layer, which are sequentially formed on the substrate.

14. The organic electronic system according to claim 13 , wherein a projected area of the planarization layer of the substrate is smaller than that of the first electrode layer, and the first electrode layer is formed on the planarization layer and on the base layer, below which the planarization layer is not formed.

15. A light comprising the organic electronic device of claim 13 .

Assignees

• Lg Chemical Ltd

Inventors

• Park Min Choon
• Son Se Hwan
• Lee Yeon Keun
• Ahn Yong Sik
• Kim Jung Doo
• Kim Ji Hee
• Park Sang Jun
• Kim Yong Nam

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• Y10T428/249971

  Preformed hollow element-containing · CPC title

• Y10T428/25

  Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles · CPC title

• Y10T428/24752

  Laterally noncoextensive components · CPC title

• Y10T428/24372

  Particulate matter · CPC title