Radiation-Emitting Component

• US 20090311512A1
• Filed: 07/04/2007
• Published: 12/17/2009
• Est. Priority Date: 07/31/2006
• Status: Abandoned Application

• Current Assignee: OSRAM OLED GMBH (Ams-Osram AG)
• Original Assignee: Osram Opto Semiconductors GmbH (Ams-Osram AG), Bayer Materialscience AG (Covestro AG)
• Inventors: Braun, Hans, Pätzold, Ralph, Schindler, Florian, Meyer, Klaus, Klein, Markus, Pudleiner, Heinz, Sarfert, Wiebke
• Application Number:
  US12/375,875
• Publication Number:
  US 20090311512A1
• Time in Patent Office: Days
• US Class Current: 428/323
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: G02B 5/02 Diffusing elements; Afocal elements
• CPC Class Codes: G02B 5/021 the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
• CPC Class Codes: G02B 5/0242 by means of dispersed particles
• CPC Class Codes: G02B 5/0247 by means of voids or pores
• CPC Class Codes: G02B 5/0278 used in transmission
• CPC Class Codes: G02B 6/0051 Diffusing sheet or layer
• CPC Class Codes: H10K 2102/331 Nanoparticles used in non-emissive layers, e.g. in packaging layer
• CPC Class Codes: H10K 50/854 comprising scattering means
• CPC Class Codes: Y10T 428/25 Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
• CPC Class Codes: Y10T 428/269 including synthetic resin or polymer layer or component
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31507 Of polycarbonate

Abstract

An organic radiation-emitting component (1) comprising an organic layer (2) formed for generating radiation, and comprising a radiation coupling-out side is specified, a scattering film (8) being arranged on the radiation coupling-out side of the component and being connected to the component.

Claims

1. A component comprising:

an organic radiation-emitting element having an organic layer formed for generating radiations;

a radiation coupling-out side; and

a scattering film arranged on the radiation coupling-out side of the element and being connected to the element.

2. The component according to claim 1, comprising a substrate, on which the organic layer is arranged, the scattering film being arranged on that side of the substrate which is remote from the organic layer and being connected to the substrate.

3. The component according to claim 1, wherein,

the scattering film is formed as a transmission scattering film which scatters radiation passing through the scattering film during operation of the component.

4. The component according to claim 1, wherein,

the scattering film comprises a film matrix admixed with scattering particles.

5. The component according to claim 4, wherein scattering particles are formed such that they are radiation-transmissive.

6. The component according to claim 4, wherein the scattering particles comprise organic particles.

7. The component according to claim 4, wherein the scattering particles comprise hollow particles.

8. The component according to claim 4, wherein the scattering particles comprise particles with a core-shell construction.

9. The component according to claim 4, wherein the scattering particles have an average particle diameter of between 0.5 micrometer and 50 micrometers inclusive, preferably between 2 micrometers and 30 micrometers inclusive.

10. The component according to claim 1, wherein a scattering structure is formed in a surface of the scattering film.

11. The component according to claim 10,

wherein the scattering film comprises a film matrix admixed with scattering particles.

12. The component according to claim 1, wherein the scattering film or the film matrix contains a plastic that is transmissive to the radiation generated in the component.

13. The component according to claim 12, wherein the plastic is a polycarbonate.

14. The component according to claim 1, wherein the scattering film or the film matrix is refractive-index-matched to the element.

15. The component according to claim 13, wherein the substrate contains glass.

16. The component according to claim 1, wherein the scattering film is fixed to the element by means of an adhesion promoter, or in which the scattering film is laminated onto the element.

17. The component according to claim 1, wherein the substrate is formed from a fragmentable material, and the scattering film is formed in mechanically stable fashion and connected to the substrate in such a way that a fragmented substrate is held together by means of the scattering film.

18. The component according to claim 1, wherein the scattering film has a thickness of between 1 μ

m and 1 mm inclusive.

19. The component according to claim 1, wherein an ultraviolet-radiation-absorbing element is connected to the organic radiation-emitting element.

20. The component according to claim 19, wherein the ultraviolet-radiation-absorbing element is arranged on that side of the substrate which is remote from the organic layer.

21. The component according to claim 19, wherein the element is a separate UV protective film.

22. The component according to claim 19, wherein the scattering film is formed such that it is UV-absorbent.

23. The component according to claim 1, wherein the scattering film is formed in antistatic fashion.

24. The component according to claim 1, wherein is formed as an organic light-emitting diode.

25. The component according to claim 1, wherein the element is adapted for lighting.

26. Use of a film for a coupling-out layer for an organic radiation-emitting component.