EL device, EL display, EL illumination apparatus, liquid...

Details EL device, EL display, EL illumination apparatus, liquid... EL device, EL display, EL illumination apparatus, liquid...

2005-03-29

2005-03-29

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S502000, C313S506000, C349S069000, C349S096000, C349S103000

Reexamination Certificate

active

06873099

ABSTRACT:
An electroluminescent (EL) display apparatus is constructed in such a way that a plurality of EL elements are disposed on one surface of an optically transparent substrate in a matrix so as to be isolated from each other and be powered individually, and at least one of a pair of electrodes is made of an optically transparent electrode, so that, when the EL elements are powered, light is emitted from the light emitting layers, wherein an optical device is provided on the other surface side of the substrate so that at least a portion of an incident light injected into the substrate and forming an angle to cause total reflection at the exit face is scattered and/or diffracted externally, and another portion of the incident light is weakly scattered and/or transmitted externally.

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