Organic electroluminescence cell, planar light source and...

Details Organic electroluminescence cell, planar light source and... Organic electroluminescence cell, planar light source and...

2006-09-19

2006-09-19

Guharay, Karabi (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S110000

Reexamination Certificate

active

07109651

ABSTRACT:
An organic electroluminescence cell including at least one organic layer and a pair of electrodes, the organic layer including a light-emitting layer and sandwiched between the pair of electrodes, the pair of electrodes including a reflective electrode and a transparent electrode, the organic electroluminescence cell formed to satisfy the expression: B0<Bθin which B0is a frontal luminance value of luminescence radiated from a light extraction surface to an observer, and Bθis a luminance value of the luminescence at an angle of from 50° to 70°, wherein a reflection/refraction angle disturbance region is provided so that the angle of reflection/refraction of the luminescence is disturbed while the luminescence is output from the light-emitting layer to the observer side through the transparent electrode.

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