Composite optical destructive electrode for high contrast...

Details Composite optical destructive electrode for high contrast... Composite optical destructive electrode for high contrast...

2004-05-25

2011-11-29

Patel, Ashok (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S112000, C313S506000

Reexamination Certificate

active

08067886

ABSTRACT:
The present invention in one embodiment introduces a composite optical destructive layer (35) into the electroluminescent device which reduces the reflection of ambient light from the device. The composite optical destructive layer (35) is advantageously made of materials already found in the manufacturing process of the electroluminescent device (70) and also by manufacturing processes inherent in the manufacture of the device. More particularly, the composite optical destructive layer (35) is made from a variant of a parent material used to form one of the electrodes (12) of the electroluminescent device. The variant material differs from the parent material in that the variant material is oxygen deficient. This oxygen deficiency in the variant material causes the variant material to have a change in refractive index from that of the parent material. The composite optical destructive layer (35) that is made from the variant material is then able to absorb incident ambient light as well as reflected ambient light from the electroluminescent device (70).

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