Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2006-05-02
2010-06-15
Macchiarolo, Peter J (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S504000
Reexamination Certificate
active
07737630
ABSTRACT:
An EL element which is thicker and lower-voltage drive without doping acceptor or donor than the conventional one. An EL element in which an electroluminescent film103containing an organic compound which can provide electroluminescent, a floating electrode104, an electron transport supporting layer105and a cathode102are in order laminated on an anode101. A film thickness of the electroluminescent film103is on the order of a conventional film thickness (on the order of approximately 100 nm), and the electron transport supporting layer105may also have a film thickness on the order of the electroluminescent film103. The EL element can be driven at lower voltage than the conventional one by introducing a hole blocking material into an electron transport supporting layer.
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Seo Satoshi
Yamazaki Hiroko
Husch Blackwell Sanders LLP
Macchiarolo Peter J
Raleigh Donald L
Semiconductor Energy Laboratory Co,. Ltd.
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