Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2005-05-10
2005-05-10
Williams, Joseph (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S512000
Reexamination Certificate
active
06891330
ABSTRACT:
A mechanically flexible and environmentally stable organic electroluminescent (“EL”) device with directional light emission comprises an organic EL member disposed on a flexible substrate, a surface of which is coated with a multilayer barrier coating which includes at least one sublayer of a substantially transparent organic polymer and at least one sublayer of a substantially transparent inorganic material. The device includes a reflective metal layer disposed on the organic EL member opposite to the substrate. The reflective metal layer provides an increased external quantum efficiency of the device. The reflective metal layer and the multilayer barrier coating form a seal around the organic EL member to reduce the degradation of the device due to environmental elements.
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Duggal Anil Raj
Schaepkens Marc
Shiang Joseph John
Caruso Andrew J.
Powell, III William E.
Williams Joseph
Zimmerman Glenn
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