Electroluminescent device
AssigneeKoninklijke Philips Electronics N.V.
InventorsHerbert Friedrich Boerner, Dietrich Bertram
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Abstract
The invention relates to an electroluminescent device (10) comprising a layer system with a substrate (40) and on top of the substrate (40) a substrate electrode (20), a counter electrode (30) and an electroluminescent layer stack with at least one organic electroluminescent layer (50) arranged between the substrate electrode (20) and the counter electrode (30), characterized in that at least one optical transparent outcoupling body (71) is provided on top of the substrate electrode (20) to increase the outcoupling of light generated by the at least one organic electroluminescent layer (50) at least partly covering the optical transparent outcoupling body (71). The invention further relates to a method to manufacture such a device.
Claims16
An electroluminescent device comprising a layer system with a substrate and on top of the substrate a substrate electrode, a counter electrode and an electroluminescent layer stack with at least one organic electroluminescent layer arranged between the substrate electrode and the counter electrode, wherein at least one optical transparent outcoupling body is provided on top of the substrate electrode to increase the outcoupling of light generated by the at least one organic electroluminescent layer at least partly covering the optical transparent outcoupling body.
Method for manufacturing an electroluminescent device with an increased outcoupling of light, comprising a layer system with a substrate and on top of the substrate a substrate electrode, a counter electrode and an electroluminescent layer stack with at least one organic electroluminescent layer arranged between the substrate electrode and the counter electrode, the method comprising the steps of:
- a) providing at least one optical transparent outcoupling body on top of the substrate electrode and
- b) applying the electroluminescent layer stack and the counter electrode both on the at least one optical transparent outcoupling body and on the surface of the substrate electrode.
Dependencies are inferred from the claim text.