Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2010-01-19
2011-11-01
Guharay, Karabi (Department: 2889)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S504000
Reexamination Certificate
active
08049421
ABSTRACT:
When a light emitting element is actuated to allow the light emission, the generation of Joule heat occurs, leading to the decomposition or crystallization of an organic compound to cause the degradation of the light emitting device. Therefore, a light emitting element of the present invention is provided for effecting removing or decreasing the generation of heat. In the present invention, between two electrodes, layers having organic compounds and carbon-based thin films are alternatively laminated one after another for stepping down the driving voltage in the light emitting element using the tunnel effect. In addition, a carbon-based thin film is placed on a film containing an organic compound, so that it prevents the electric field from being locally concentrated and also prevents the generation of short-circuit between the anode and the cathode.
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Kuwabara Hideaki
Yamazaki Shunpei
Fish & Richardson P.C.
Guharay Karabi
Semiconductor Energy Laboratory Co,. Ltd.
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