Organic light-emitting diode (OLED) and method for the production thereof
AssigneeOSRAM Opto Semiconductors GmbH
InventorsJan Birnstock, Jörg Blässing, Karsten Heuser, Marcus Scheffel, Matthias Stössel, Georg Wittmann
Life of this patent
Estimating the term…
Abstract
An organic layer (1) is applied to a transparent carrier (2) in such a way that different partial regions with different refractive indices are formed in the layer. Owing to deflection at the phase boundaries within the layer, fewer photons remain trapped in the layer as a result of wave-guiding losses than in the case of homogeneous layers.
Claims25
An organic light emitting diode (OLED) with at least one active, light emitting organic layer which has refractive index inhomogeneities;
- wherein the organic layer has at least one first partial region with a first refractive index and a plurality of second partial regions with a second refractive index which is different from the first refractive index, said second partial regions forming irregularly arranged refractive index inhomogeneities in the organic layer.
A method for producing an organic light emitting diode (OLED) with at least one active, light emitting organic layer which has refractive index inhomogeneities;
- wherein the material of the organic layer is applied to a carrier in such a way that, during or after a coating step, at least one first partial region with a first refractive index and a plurality of second partial regions with a second refractive index form in the layer, said second refractive index of the second partial regions being different from the first refractive index, and said second partial regions forming irregularly arranged refractive index inhomogeneities in the organic layer.
An organic light-emitting diode (OLED) with at least one active, light-emitting layer which has refractive index inhomogeneities;
- wherein the organic layer has at least one first partial region with a first refractive index and a plurality of second partial regions with second refractive index which is different from the first refractive index, said second partial regions having different sizes and forming refractive index inhomogeneities in the organic layer.
Dependencies are inferred from the claim text.