Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2005-12-08
2008-12-16
Williams, Joseph L (Department: 2889)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S512000, C313S110000
Reexamination Certificate
active
07466075
ABSTRACT:
An organic light-emitting diode (OLED) device, with an OLED formed on a substrate having a first and second electrodes and one or more light-emitting organic material layers formed between the electrodes, the organic material layer(s) having a first optical index and at least one of the electrodes patterned to define light-emitting areas; a cover formed over the OLED. The cover or substrate is transparent and has a second optical index and the light is emitted through the transparent cover or substrate; a light-scattering layer formed between the cover and substrate for scattering light; a low-index element having an optical index lower than the first and second optical indices formed between the scattering layer and the transparent cover or substrate; and a contrast-enhancement layer having a plurality of alternating light-absorbing portions and light-transmissive portions formed in the layer located between the light-scattering layer and the transparent substrate or cover through which light is emitted, wherein a plurality of light-absorbing portions and light-transmissive portions are located in each light-emitting area.
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Cok Ronald S.
Tutt Lee W.
Anderson Andrew J.
Eastman Kodak Company
Williams Joseph L
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