Substrate for organic electronic device having high refractive layer on light scattering, optical functional layer

Patent metadata

Field	Value
Publication number	US-9595684-B2
Application number	US-201314437428-A
Country	US
Kind code	B2
Filing date	Dec 2, 2013
Priority date	Nov 30, 2012
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

Provided are a substrate for an organic electronic device (OED), an organic electronic system, a method of manufacturing the substrate or the system, a light source for a display, and a lighting device. The substrate for an OED may form an organic electronic system having excellent performances including light extraction efficiency.

First claim

What is claimed is:

1. A substrate for an organic electronic device (OED), comprising:
a first polymer base layer having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more;
an optical functional layer formed on the first polymer base layer; and
a high refractive layer including a planarization layer formed on the optical functional layer and having a refractive index with respect to light of a wavelength of 633 nm of 1.7 or more and a second polymer base layer formed on the planarization layer and having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more,
wherein the optical functional layer is a light scattering layer including a matrix material and scattering particles having a different refractive index of more than 0.3 from the matrix material.

2. The substrate according to claim 1 , wherein the first polymer base layer includes a poly(amic acid), polyimide, polyethylene naphthalate, polyether ether ketone, polycarbonate, polyethylene terephthalate, polyether sulfide, polysulfone acryl resin, polystyrene, or epoxy resin.

3. The substrate according to claim 1 , wherein the light scattering layer is a layer having an uneven structure.

4. The substrate according to claim 1 , wherein the planarization layer includes a poly(amic acid), polyimide, polysiloxane, or epoxy resin.

5. The substrate according to claim 4 , wherein the planarization layer further includes particles having a refractive index with respect to light with a wavelength of 633 nm of 1.8 or more and an average particle size of 50 nm or less.

6. The substrate according to claim 1 , further comprising:
a carrier substrate,
wherein a side of the first polymer base layer opposite to the optical functional layer is in contact with the carrier substrate.

7. An organic electronic system, comprising:
a substrate for an organic electronic device (OED), comprising:
a first polymer base layer having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more;
an optical functional layer formed on the first polymer base layer; and
a high refractive layer including a planarization layer formed on the optical functional layer and having a refractive index with respect to light of a wavelength of 633 nm of 1.7 or more and a second polymer base layer formed on the planarization layer and having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more,
wherein the optical functional layer is a light scattering layer including a matrix material and scattering particles having a different refractive index of more than 0.3 from the matrix material;

a first electrode formed on a high refractive layer of the substrate;
a functional organic layer formed on the first electrode; and
a second electrode formed on the functional organic layer.

8. A light source for a display, comprising:
an organic electronic system, comprising:
a substrate for an organic electronic device (OED), comprising:
a first polymer base layer having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more;
an optical functional layer formed on the first polymer base layer; and
a high refractive layer including a planarization layer formed on the optical functional layer and having a refractive index with respect to light of a wavelength of 633 nm of 1.7 or more and a second polymer base layer formed on the planarization layer and having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more,
wherein the optical functional layer is a light scattering layer including a matrix material and scattering particles having a different refractive index of more than 0.3 from the matrix material;

a first electrode formed on a high refractive layer of the substrate;
a functional organic layer formed on the first electrode; and
a second electrode formed on the functional organic layer.

9. A lighting device, comprising:
an organic electronic system, comprising:
a substrate for an organic electronic device (OED), comprising:
a first polymer base layer having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more;
an optical functional layer formed on the first polymer base layer; and
a high refractive layer including a planarization layer formed on the optical functional layer and having a refractive index with respect to light of a wavelength of 633 nm of 1.7 or more and a second polymer base layer formed on the planarization layer and having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more,
wherein the optical functional layer is a light scattering layer including a matrix material and scattering particles having a different refractive index of more than 0.3 from the matrix material;

a first electrode formed on a high refractive layer of the substrate;
a functional organic layer formed on the first electrode; and
a second electrode formed on the functional organic layer.

10. A method of manufacturing a substrate for an organic electronic device (OED), comprising:
forming a first polymer base layer having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more on a carrier substrate;
forming an optical functional layer on the first polymer base layer; and
forming a high refractive layer including a planarization layer formed on the optical functional layer and having a refractive index with respect to light of a wavelength of 633 nm of 1.7 or more and a second polymer base layer formed on the planarization layer and having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more,
wherein the optical functional layer is a light scattering layer including a matrix material and scattering particles having a different refractive index of more than 0.3 from the matrix material.

11. The method according to claim 10 , wherein the first polymer base layer is formed by laminating a polymer film or coating a coating solution including a polymer, on the carrier substrate.

12. A method of manufacturing an organic electronic system, comprising:
sequentially forming a first electrode, a functional organic layer, and a second electrode on a substrate for the organic electronic device,
wherein the substrate is manufactured by:
forming a first polymer base layer having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more on a carrier substrate;
forming an optical functional layer on the first polymer base layer; and
forming a high refractive layer including a planarization layer formed on the optical functional layer and having a refractive index with respect to light of a wavelength of 633 nm of 1.7 or more and a second polymer base layer formed on the planarization layer and having a refractive index with respect to light with a wavelength of 633 nm of 1.6 or more,
wherein the optical functional layer is a light scattering layer including a matrix material and scattering particles having a different refractive index of more than 0.3 from the matrix material.

Assignees

• Lg Chemical Ltd
• Lg Chemical Ltd

Inventors

• Kim Ji Hee
• Lee Jung Hyoung
• Choi Jun Rye

Classifications

• H10K77/10

  Substrates, e.g. flexible substrates · CPC title

• C08J5/18

  Manufacture of films or sheets · CPC title

• H10K59/877 Primary

  comprising scattering means · CPC title

• Y10T428/24355

  Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] · CPC title

• H01L51/0001

  Electricity · mapped topic