Electric lamp and discharge devices – With optical device or special ray transmissive envelope
Reexamination Certificate
2005-06-14
2005-06-14
Patel, Vip (Department: 2879)
Electric lamp and discharge devices
With optical device or special ray transmissive envelope
C313S512000
Reexamination Certificate
active
06906452
ABSTRACT:
The present invention provides an electroluminescent display which can efficiently radiate light emitted from an electroluminescent layer to a viewer side and, at the same time, can reduce a deterioration in contrast of a displayed image caused by external light. The electroluminescent display includes a light transparent substrate and an electroluminescent layer provided on the light-transparent substrate. The electroluminescent layer includes at least a transparent electrode, an organic luminescent layer, and a cathode. Two or more regions with different refractive indexes are provided within said light-transparent substrate.
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Dai Nippon Printing Co. Ltd.
Parkhurst & Wendel L.L.P.
Patel Vip
Perry Anthony
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