Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2006-05-30
2006-05-30
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S501000, C313S502000, C313S504000, C313S512000
Reexamination Certificate
active
07053547
ABSTRACT:
A device is provided. The device includes a substrate, a first electrode disposed over the substrate, a small molecule organic emissive layer disposed over the first electrode, and a second electrode disposed over the organic emissive layer. The substrate has a first index of refraction, and the organic emissive layer has a second index of refraction. The first index of refraction is higher than the second index of refraction. The device may have an external electroluminescent efficiency of at least about 56%. Bulky substituents or dopants may be used to decrease the index of refraction and/or the density of the organic emissive layer.
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Kwong Raymond
Lu Min-Hao Michael
Madigan Conor Francis
Sturm James C.
Hodges Matt
Kenyon & Kenyon LLP
Patel Nimeshkumar D.
The Trustees of Princeton University
Universal Display Corporation
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