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US 6,046,543 AGranted
High reliability, high efficiency, integratable organic light emitting devices and methods of producing same
AssigneeThe Trustees of Princeton University
InventorsVladimir Bulovic, Stephen R. Forrest, Paul Burrows, Dmitri Z. Garbuzov
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Abstract
An organic light emitting device (OLED) having an inverted structure including a cathode layer which is deposited on a substrate and on top of which an electron transporting layer (ETL), an electroluminescent (EL) layer, a hole transporting layer (HTL), a protection layer and an anode are deposited in sequence. The inverted OLED (IOLED) provides improved longevity, flexibility and efficiency over conventional OLEDs.
Claims11
An organic light emitting device comprising:
- a substrate;
- a cathode layer formed on a top surface of the substrate;
- a first organic layer formed on the cathode layer;
- a second organic layer formed on the first organic layer;
- a protection layer formed on the second organic layer;
- and
- an anode layer formed on the protection layer,
- wherein at least one of the first and second organic layers emits a first light upon application of a voltage between the anode layer and the cathode layer.
5 more elements
Dependencies are inferred from the claim text.