Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2008-12-11
2011-10-18
Macchiarolo, Peter (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C428S690000
Reexamination Certificate
active
08040053
ABSTRACT:
An organic light emitting device is provided. The device includes an anode and a cathode. A first emissive layer is disposed between the anode and the cathode. The first emissive layer includes a first non-emitting organic material, which is an organometallic material present in the first emissive layer in a concentration of at least 50 wt %. The first emissive layer also includes a first emitting organic material. A second emissive layer is disposed between the first emissive layer and the cathode, preferably, in direct contact with the first emissive layer. The second emissive material includes a second non-emitting organic material and a second emitting organic material. The first and second non-emitting materials, and the first and second emitting materials, are all different materials. A first non-emissive layer is disposed between the first emissive layer and the anode, and in direct contact with the first emissive layer. The first non- emissive layer comprises the first non-emissive organic material.
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D'Andrade Brian
Esler James
Kilpatrick Townsend & Stockton LLP
Macchiarolo Peter
Universal Display Corporation
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