OLED efficiency by utilization of different doping...

Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type

Reexamination Certificate

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C313S506000, C428S690000

Reexamination Certificate

active

07151339

ABSTRACT:
The present invention relates to organic light emitting devices (OLEDs), and more specifically to an OLED device structure that provides improved performance characteristics, such as increased luminous efficiency and improved lifetime. The OLEDs of present invention comprise an emissive layer in which an emissive dopant is non-uniformly doped into a host material.

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