Radiation-emitting organic component

Patent metadata

Field	Value
Publication number	US-9893319-B2
Application number	US-201214370028-A
Country	US
Kind code	B2
Filing date	Dec 6, 2012
Priority date	Jan 4, 2012
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

The invention relates to a radiation-emitting, organic component comprising a radiation-permeable carrier body ( 1 ) having a first surface ( 1 a ) on a top side of the carrier body ( 1 ), a radiation-permeable, structured layer ( 2 ) that is arranged on the first surface ( 1 a ) and covers same at least in places, a radiation-permeable first electrode ( 3 ) that is arranged on the side of the structured layer ( 2 ) facing away from the carrier body ( 1 ), a layer stack ( 10 ) that is arranged on the side of the first electrode ( 3 ) facing away from the structured layer ( 2 ) and comprises an organic, active region, and a second electrode ( 6 ), wherein the active region ( 10 a ) can be electrically contacted via the first electrode ( 3 ) and the second electrode ( 6 ), the structured layer ( 2 ) is different from the radiation-permeable carrier body ( 1 ), and the structured layer ( 2 ) comprises structures ( 2 a ) for refracting and/or scattering electromagnetic radiation generated in the active region ( 100 ) during operation.

First claim

The invention claimed is:

1. A radiation-emitting, organic component comprising:
a radiation-transmissive carrier body having a first surface at a top side of the radiation-transmissive carrier body;
a radiation-transmissive, structured layer, which is arranged at the first surface and covers the latter at least in places;
a radiation-transmissive first electrode, which is arranged at that side of the radiation-transmissive, structured layer which faces away from the radiation-transmissive carrier body;
a layer stack, which is arranged at that side of the first electrode which faces away from the radiation-transmissive, structured layer and comprises an organic active region; and
a second electrode,

wherein
electrical contact can be made with the active region via the first electrode and the second electrode,
the radiation-transmissive, structured layer is different from the radiation-transmissive carrier body,
the radiation-transmissive, structured layer comprises structures provided for refracting electromagnetic radiation generated in the active region during operation,
the radiation-transmissive carrier body is the primary structural support of the radiation emitting organic component,
the structures of the radiation-transmissive, structured layer are formed into the radiation-transmissive, structured layer at that side of the radiation-transmissive, structured layer which faces away from the radiation-transmissive carrier body and have a structure size that is greater than or equal to the wavelength of the electromagnetic radiation generated in the active region during operation,
the structures of the radiation-transmissive, structured layer consist of a material of the radiation-transmissive, structured layer, and
the radiation-transmissive, structured layer is free of light-scattering particles.

2. The radiation-emitting, organic component according to claim 1 , wherein the radiation-transmissive carrier body and the radiation-transmissive, structured layer are formed with a glass.

3. The radiation-emitting, organic component according to claim 1 , comprising an intermediate layer arranged between the radiation-transmissive, structured layer and the first electrode, wherein
the intermediate layer has an optical refractive index that is at least equal to an average optical refractive index of the layer stack, and
the intermediate layer has an optical refractive index that is greater than the optical refractive index of the radiation-transmissive carrier body.

4. The radiation-emitting, organic component according to claim 3 , wherein the intermediate layer directly adjoins the radiation-transmissive, structured layer and the intermediate layer directly adjoins the first electrode or forms the latter.

5. The radiation-emitting, organic component according to claim 3 , wherein a surface of the intermediate layer that faces away from the radiation-transmissive carrier body has a mean roughness that is less than a mean roughness of the surface of the radiation-transmissive, structured layer that faces the intermediate layer.

6. The radiation-emitting, organic component according to claim 3 , wherein the first surface has a mean roughness that is greater than the surface of the intermediate layer that faces away from the radiation-transmissive carrier body.

7. The radiation-emitting, organic component according to claim 3 , wherein particles are embedded into the material of the intermediate layer.

8. The radiation-emitting, organic component according to claim 7 , wherein at least some, in particular all, of the particles contain one of the following materials or consist of one of the following materials: tantalum oxide, lanthanum oxide, hafnium oxide, zirconium oxide, TiO 2 , AlN, SiC, MgO, SiO 2 , Al 2 O 3 .

9. A method for producing a radiation-emitting, organic component according to claim 3 comprising the following steps:
providing the radiation-transmissive carrier body;
applying the intermediate layer from the liquid phase and the particles to the first surface of the radiation-transmissive carrier body;
sedimenting the particles in the liquid intermediate layer in order to form the radiation-transmissive, structured layer; and
curing the intermediate layer.

10. A method for producing a radiation-emitting, organic component according to claim 1 comprising the following steps:
providing the radiation-transmissive carrier body;
applying a glass-containing material to the first surface of the radiation-transmissive carrier body;
melting or incipiently melting the glass-containing material; and
structuring that surface of the glass-containing material which faces away from the radiation-transmissive carrier body to form the radiation-transmissive, structured layer.

11. The radiation-emitting, organic component according to claim 1 , wherein
the radiation-transmissive carrier body has a structuring at the first surface, and
the radiation-transmissive carrier body has a mean roughness of at least 0.25 μm at the first surface.

12. The radiation-emitting, organic component according to claim 1 , wherein the structures of the radiation-transmissive, structured layer form optical lenses for the electromagnetic radiation generated in the active region during operation.

Assignees

• Osram Opto Semiconductors Gmbh
• Osram Oled Gmbh

Inventors

• Dobbertin Thomas
• Reusch Thilo
• Riegel Nina
• Setz Daniel Steffen
• Wehlus Thomas

Classifications

• H01L51/5206

  Electricity · mapped topic

• H01L51/5221

  Electricity · mapped topic

• H01L51/56

  Electricity · mapped topic

• H01L51/5268 Primary

  Electricity · mapped topic

• H01L51/5275

  Electricity · mapped topic