Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2003-08-05
2009-12-15
Roy, Sikha (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S504000, C428S690000, C428S917000, C445S024000
Reexamination Certificate
active
07633221
ABSTRACT:
An organic electroluminescent element has a substrate, a first electrode formed above the substrate, an emissive layer, and a second electrode formed above the emissive layer. In the first electrode, at least a surface opposite to the other surface facing the substrate has a multidimensionally meandering surface shape. The emissive layer includes an organic electroluminescent material and is formed along the multidimensionally-meandering-shaped surface of the first electrode. In the emissive layer, a surface facing the first electrode and the other surface opposite to the first-electrode-facing surface each have a multidimensionally meandering surface shape. The organic electroluminescent element of the present invention is used in an electroluminescent (EL) type display device as a pixel that is controlled individually for light emission. Also, the organic electroluminescent element of the present invention is used as a light source of an electroluminescent (EL) type lighting system. As a result, an organic electroluminescent element with high luminance and an organic electroluminescent element with a long lifetime are provided, and an EL display device and an EL lighting system using such elements are provided.
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Nishiyama Seiji
Wakita Naohide
Panasonic Corporation
Roy Sikha
Steptoe & Johnson LLP
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