White light emitting OLEDs from combined monomer and...

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Reexamination Certificate

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C428S917000, C313S504000, C313S506000, C252S301160, C252S301350, C257S102000, C257S103000

Reexamination Certificate

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06863997

ABSTRACT:
The present invention relates to efficient organic light emitting devices (OLEDs). More specifically, the present invention relates to white-emitting OLEDs, or WOLEDs. The devices of the present invention employ two emitters in a single emissive region to sufficiently cover the visible spectrum. White emission is achieved from two emitters in a single emissive region through the formation of an aggregate by one of the emissive centers. This allows the construction of simple, bright and efficient WOLEDs that exhibit a high color rendering index.

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